java.lang.NoClassDefFoundError: org/springframework/core/KotlinDetector

原创最新推荐文章于 2026-10-02 11:33:01 发布 9w 阅读 AI写同款

收录于

SpringBoot

CZ__

码龄9年墨衍会员 · AI 创作全网分发

97粉丝114篇原创

关注

从 0 到 1：用 Trae 插件 Builder 模式开发端午包粽子小游戏 Trae插件的Builder模式为开发者提供了一种高效的项目搭建方式，通过自然语言描述需求，能够快速生成项目框架和核心代码，减少重复性工作。本文以开发端午包粽子小游戏为例，展示了Trae插件的安装、使用及功能特点。通过自然语言描述，插件能够理解并生成项目结构、代码文件，并提供开发路线图建议。在实际开发中，虽然自然语言描述的精准度对生成结果有影响，但Trae插件在代码生成效率和项目搭建速度上表现出色，尤其适合中小项目和特定类型应用的快速开发。未来，插件在复杂大型项目的高度定制化开发方面仍有提升空间。阅读详情

AI摘要

本文记录了一次SpringBoot应用启动过程中遇到的多个异常情况及其解决思路。主要异常包括因依赖版本不匹配导致的启动失败及Spring Data配置问题等。通过调整spring-core版本和优化Spring Data配置，最终成功解决了这些问题。

报错信息：

Exception in thread "main" java.lang.IllegalArgumentException: Cannot instantiate interface org.springframework.context.ApplicationContextInitializer : org.springframework.boot.context.ConfigurationWarningsApplicationContextInitializer
    at org.springframework.boot.SpringApplication.createSpringFactoriesInstances(SpringApplication.java:448)
    at org.springframework.boot.SpringApplication.getSpringFactoriesInstances(SpringApplication.java:427)
    at org.springframework.boot.SpringApplication.getSpringFactoriesInstances(SpringApplication.java:418)
    at org.springframework.boot.SpringApplication.<init>(SpringApplication.java:266)
    at org.springframework.boot.SpringApplication.<init>(SpringApplication.java:247)
    at org.springframework.boot.SpringApplication.run(SpringApplication.java:1255)
    at org.springframework.boot.SpringApplication.run(SpringApplication.java:1243)
    at com.neo.SpringBoot.Application.main(Application.java:10)
Caused by: java.lang.NoClassDefFoundError: org/springframework/core/KotlinDetector
    at org.springframework.beans.BeanUtils.instantiateClass(BeanUtils.java:169)
    at org.springframework.boot.SpringApplication.createSpringFactoriesInstances(SpringApplication.java:444)
    ... 7 more
Caused by: java.lang.ClassNotFoundException: org.springframework.core.KotlinDetector
    at java.net.URLClassLoader.findClass(URLClassLoader.java:381)
    at java.lang.ClassLoader.loadClass(ClassLoader.java:424)
    at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:331)
    at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
    ... 9 more
ERROR: JDWP Unable to get JNI 1.2 environment, jvm->GetEnv() return code = -2
JDWP exit error AGENT_ERROR_NO_JNI_ENV(183):  [util.c:840]

网上说更改spring-core版本为5.0.1以上即可，
更改前：

<dependency>
    <groupId>org.springframework</groupId>
    <artifactId>spring-core</artifactId>
</dependency>

更改后：

<dependency>
    <groupId>org.springframework</groupId>
    <artifactId>spring-core</artifactId>
    <version>5.0.2.RELEASE</version>
</dependency>

但是更改之后又报了以下的错误：

15:35:56.940 [main] DEBUG org.springframework.boot.devtools.settings.DevToolsSettings - Included patterns for restart : []
15:35:56.945 [main] DEBUG org.springframework.boot.devtools.settings.DevToolsSettings - Excluded patterns for restart : [/spring-boot-actuator/target/classes/, /spring-boot-devtools/target/classes/, /spring-boot/target/classes/, /spring-boot-starter-[\w-]+/, /spring-boot-autoconfigure/target/classes/, /spring-boot-starter/target/classes/]
15:35:56.945 [main] DEBUG org.springframework.boot.devtools.restart.ChangeableUrls - Matching URLs for reloading : [file:/D:/workspace/SpringBoot/target/classes/]

  .   ____          _            __ _ _
 /\\ / ___'_ __ _ _(_)_ __  __ _ \ \ \ \
( ( )\___ | '_ | '_| | '_ \/ _` | \ \ \ \
 \\/  ___)| |_)| | | | | || (_| |  ) ) ) )
  '  |____| .__|_| |_|_| |_\__, | / / / /
 =========|_|==============|___/=/_/_/_/
 :: Spring Boot ::        (v2.0.3.RELEASE)

2018-07-25 15:35:58.079  WARN 9748 --- [  restartedMain] o.s.b.c.e.EventPublishingRunListener     : Error calling ApplicationEventListener

java.lang.NoSuchFieldError: logger
    at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:248) ~[spring-beans-5.0.7.RELEASE.jar:5.0.7.RELEASE]
    at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:204) ~[spring-beans-5.0.7.RELEASE.jar:5.0.7.RELEASE]
    at org.springframework.boot.autoconfigure.condition.ConditionEvaluationReport.get(ConditionEvaluationReport.java:169) ~[spring-boot-autoconfigure-2.0.3.RELEASE.jar:2.0.3.RELEASE]
    at org.springframework.boot.autoconfigure.logging.ConditionEvaluationReportLoggingListener.logAutoConfigurationReport(ConditionEvaluationReportLoggingListener.java:96) ~[spring-boot-autoconfigure-2.0.3.RELEASE.jar:2.0.3.RELEASE]
    at org.springframework.boot.autoconfigure.logging.ConditionEvaluationReportLoggingListener.onApplicationEvent(ConditionEvaluationReportLoggingListener.java:80) ~[spring-boot-autoconfigure-2.0.3.RELEASE.jar:2.0.3.RELEASE]
    at org.springframework.boot.autoconfigure.logging.ConditionEvaluationReportLoggingListener$ConditionEvaluationReportListener.onApplicationEvent(ConditionEvaluationReportLoggingListener.java:137) ~[spring-boot-autoconfigure-2.0.3.RELEASE.jar:2.0.3.RELEASE]
    at org.springframework.context.event.SimpleApplicationEventMulticaster.doInvokeListener(SimpleApplicationEventMulticaster.java:172) [spring-context-5.0.7.RELEASE.jar:5.0.7.RELEASE]
    at org.springframework.context.event.SimpleApplicationEventMulticaster.invokeListener(SimpleApplicationEventMulticaster.java:158) [spring-context-5.0.7.RELEASE.jar:5.0.7.RELEASE]
    at org.springframework.context.event.SimpleApplicationEventMulticaster.multicastEvent(SimpleApplicationEventMulticaster.java:139) [spring-context-5.0.7.RELEASE.jar:5.0.7.RELEASE]
    at org.springframework.context.event.SimpleApplicationEventMulticaster.multicastEvent(SimpleApplicationEventMulticaster.java:127) [spring-context-5.0.7.RELEASE.jar:5.0.7.RELEASE]
    at org.springframework.boot.context.event.EventPublishingRunListener.failed(EventPublishingRunListener.java:126) [spring-boot-2.0.3.RELEASE.jar:2.0.3.RELEASE]
    at org.springframework.boot.SpringApplicationRunListeners.callFailedListener(SpringApplicationRunListeners.java:91) [spring-boot-2.0.3.RELEASE.jar:2.0.3.RELEASE]
    at org.springframework.boot.SpringApplicationRunListeners.failed(SpringApplicationRunListeners.java:84) [spring-boot-2.0.3.RELEASE.jar:2.0.3.RELEASE]
    at org.springframework.boot.SpringApplication.handleRunFailure(SpringApplication.java:812) [spring-boot-2.0.3.RELEASE.jar:2.0.3.RELEASE]
    at org.springframework.boot.SpringApplication.run(SpringApplication.java:338) [spring-boot-2.0.3.RELEASE.jar:2.0.3.RELEASE]
    at org.springframework.boot.SpringApplication.run(SpringApplication.java:1255) [spring-boot-2.0.3.RELEASE.jar:2.0.3.RELEASE]
    at org.springframework.boot.SpringApplication.run(SpringApplication.java:1243) [spring-boot-2.0.3.RELEASE.jar:2.0.3.RELEASE]
    at com.neo.SpringBoot.Application.main(Application.java:10) [classes/:na]
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[na:1.8.0_60]
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) ~[na:1.8.0_60]
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[na:1.8.0_60]
    at java.lang.reflect.Method.invoke(Method.java:497) ~[na:1.8.0_60]
    at org.springframework.boot.devtools.restart.RestartLauncher.run(RestartLauncher.java:49) [spring-boot-devtools-2.0.3.RELEASE.jar:2.0.3.RELEASE]

2018-07-25 15:35:58.085 ERROR 9748 --- [  restartedMain] o.s.boot.SpringApplication               : Application run failed

java.lang.NoSuchFieldError: logger
    at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:248) ~[spring-beans-5.0.7.RELEASE.jar:5.0.7.RELEASE]
    at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:204) ~[spring-beans-5.0.7.RELEASE.jar:5.0.7.RELEASE]
    at org.springframework.boot.autoconfigure.condition.ConditionEvaluationReport.get(ConditionEvaluationReport.java:169) ~[spring-boot-autoconfigure-2.0.3.RELEASE.jar:2.0.3.RELEASE]
    at org.springframework.boot.autoconfigure.logging.ConditionEvaluationReportLoggingListener.initialize(ConditionEvaluationReportLoggingListener.java:65) ~[spring-boot-autoconfigure-2.0.3.RELEASE.jar:2.0.3.RELEASE]
    at org.springframework.boot.SpringApplication.applyInitializers(SpringApplication.java:633) [spring-boot-2.0.3.RELEASE.jar:2.0.3.RELEASE]
    at org.springframework.boot.SpringApplication.prepareContext(SpringApplication.java:373) [spring-boot-2.0.3.RELEASE.jar:2.0.3.RELEASE]
    at org.springframework.boot.SpringApplication.run(SpringApplication.java:325) [spring-boot-2.0.3.RELEASE.jar:2.0.3.RELEASE]
    at org.springframework.boot.SpringApplication.run(SpringApplication.java:1255) [spring-boot-2.0.3.RELEASE.jar:2.0.3.RELEASE]
    at org.springframework.boot.SpringApplication.run(SpringApplication.java:1243) [spring-boot-2.0.3.RELEASE.jar:2.0.3.RELEASE]
    at com.neo.SpringBoot.Application.main(Application.java:10) [classes/:na]
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[na:1.8.0_60]
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) ~[na:1.8.0_60]
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[na:1.8.0_60]
    at java.lang.reflect.Method.invoke(Method.java:497) ~[na:1.8.0_60]
    at org.springframework.boot.devtools.restart.RestartLauncher.run(RestartLauncher.java:49) [spring-boot-devtools-2.0.3.RELEASE.jar:2.0.3.RELEASE]

经过一番查验，确定是jar的问题，本地的spring-bean版本是5.0.7，而spring-boot是5.0.2，于是将spring-bean改为5.0.2

<dependency>
    <groupId>org.springframework</groupId>
    <artifactId>spring-core</artifactId>
    <version>5.0.2.RELEASE</version>
    </dependency>
<dependency>
    <groupId>org.springframework</groupId>
    <artifactId>spring-beans</artifactId>
    <version>5.0.2.RELEASE</version>
    <scope>compile</scope>
</dependency>

但是还是有以下错误：

15:55:32.232 [main] DEBUG org.springframework.boot.devtools.settings.DevToolsSettings - Included patterns for restart : []
15:55:32.247 [main] DEBUG org.springframework.boot.devtools.settings.DevToolsSettings - Excluded patterns for restart : [/spring-boot-actuator/target/classes/, /spring-boot-devtools/target/classes/, /spring-boot/target/classes/, /spring-boot-starter-[\w-]+/, /spring-boot-autoconfigure/target/classes/, /spring-boot-starter/target/classes/]
15:55:32.248 [main] DEBUG org.springframework.boot.devtools.restart.ChangeableUrls - Matching URLs for reloading : [file:/D:/workspace/SpringBoot/target/classes/]

  .   ____          _            __ _ _
 /\\ / ___'_ __ _ _(_)_ __  __ _ \ \ \ \
( ( )\___ | '_ | '_| | '_ \/ _` | \ \ \ \
 \\/  ___)| |_)| | | | | || (_| |  ) ) ) )
  '  |____| .__|_| |_|_| |_\__, | / / / /
 =========|_|==============|___/=/_/_/_/
 :: Spring Boot ::        (v2.0.3.RELEASE)

2018-07-25 15:55:33.290  INFO 10120 --- [  restartedMain] com.neo.SpringBoot.Application           : Starting Application on SZ10PD0703 with PID 10120 (D:\workspace\SpringBoot\target\classes started by nicoletang in D:\workspace\SpringBoot)
2018-07-25 15:55:33.292  INFO 10120 --- [  restartedMain] com.neo.SpringBoot.Application           : No active profile set, falling back to default profiles: default
2018-07-25 15:55:33.508  INFO 10120 --- [  restartedMain] ConfigServletWebServerApplicationContext : Refreshing org.springframework.boot.web.servlet.context.AnnotationConfigServletWebServerApplicationContext@3b9fe34d: startup date [Wed Jul 25 15:55:33 CST 2018]; root of context hierarchy
2018-07-25 15:55:35.652 ERROR 10120 --- [  restartedMain] o.s.boot.SpringApplication               : Application run failed

java.lang.IllegalStateException: Error processing condition on org.springframework.boot.autoconfigure.data.redis.LettuceConnectionConfiguration.redisConnectionFactory
    at org.springframework.boot.autoconfigure.condition.SpringBootCondition.matches(SpringBootCondition.java:64) ~[spring-boot-autoconfigure-2.0.3.RELEASE.jar:2.0.3.RELEASE]
    at org.springframework.context.annotation.ConditionEvaluator.shouldSkip(ConditionEvaluator.java:109) ~[spring-context-5.0.2.RELEASE.jar:5.0.2.RELEASE]
    at org.springframework.context.annotation.ConfigurationClassBeanDefinitionReader.loadBeanDefinitionsForBeanMethod(ConfigurationClassBeanDefinitionReader.java:179) ~[spring-context-5.0.2.RELEASE.jar:5.0.2.RELEASE]
    at org.springframework.context.annotation.ConfigurationClassBeanDefinitionReader.loadBeanDefinitionsForConfigurationClass(ConfigurationClassBeanDefinitionReader.java:141) ~[spring-context-5.0.2.RELEASE.jar:5.0.2.RELEASE]
    at org.springframework.context.annotation.ConfigurationClassBeanDefinitionReader.loadBeanDefinitions(ConfigurationClassBeanDefinitionReader.java:117) ~[spring-context-5.0.2.RELEASE.jar:5.0.2.RELEASE]
    at org.springframework.context.annotation.ConfigurationClassPostProcessor.processConfigBeanDefinitions(ConfigurationClassPostProcessor.java:328) ~[spring-context-5.0.2.RELEASE.jar:5.0.2.RELEASE]
    at org.springframework.context.annotation.ConfigurationClassPostProcessor.postProcessBeanDefinitionRegistry(ConfigurationClassPostProcessor.java:233) ~[spring-context-5.0.2.RELEASE.jar:5.0.2.RELEASE]
    at org.springframework.context.support.PostProcessorRegistrationDelegate.invokeBeanDefinitionRegistryPostProcessors(PostProcessorRegistrationDelegate.java:273) ~[spring-context-5.0.2.RELEASE.jar:5.0.2.RELEASE]
    at org.springframework.context.support.PostProcessorRegistrationDelegate.invokeBeanFactoryPostProcessors(PostProcessorRegistrationDelegate.java:93) ~[spring-context-5.0.2.RELEASE.jar:5.0.2.RELEASE]
    at org.springframework.context.support.AbstractApplicationContext.invokeBeanFactoryPostProcessors(AbstractApplicationContext.java:693) ~[spring-context-5.0.2.RELEASE.jar:5.0.2.RELEASE]
    at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:531) ~[spring-context-5.0.2.RELEASE.jar:5.0.2.RELEASE]
    at org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext.refresh(ServletWebServerApplicationContext.java:140) ~[spring-boot-2.0.3.RELEASE.jar:2.0.3.RELEASE]
    at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:759) [spring-boot-2.0.3.RELEASE.jar:2.0.3.RELEASE]
    at org.springframework.boot.SpringApplication.refreshContext(SpringApplication.java:395) [spring-boot-2.0.3.RELEASE.jar:2.0.3.RELEASE]
    at org.springframework.boot.SpringApplication.run(SpringApplication.java:327) [spring-boot-2.0.3.RELEASE.jar:2.0.3.RELEASE]
    at org.springframework.boot.SpringApplication.run(SpringApplication.java:1255) [spring-boot-2.0.3.RELEASE.jar:2.0.3.RELEASE]
    at org.springframework.boot.SpringApplication.run(SpringApplication.java:1243) [spring-boot-2.0.3.RELEASE.jar:2.0.3.RELEASE]
    at com.neo.SpringBoot.Application.main(Application.java:10) [classes/:na]
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[na:1.8.0_60]
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) ~[na:1.8.0_60]
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[na:1.8.0_60]
    at java.lang.reflect.Method.invoke(Method.java:497) ~[na:1.8.0_60]
    at org.springframework.boot.devtools.restart.RestartLauncher.run(RestartLauncher.java:49) [spring-boot-devtools-2.0.3.RELEASE.jar:2.0.3.RELEASE]
Caused by: java.lang.IllegalStateException: Failed to introspect Class [org.springframework.boot.autoconfigure.data.redis.LettuceConnectionConfiguration] from ClassLoader [sun.misc.Launcher$AppClassLoader@14dad5dc]
    at org.springframework.util.ReflectionUtils.getDeclaredMethods(ReflectionUtils.java:659) ~[spring-core-5.0.2.RELEASE.jar:5.0.2.RELEASE]
    at org.springframework.util.ReflectionUtils.doWithMethods(ReflectionUtils.java:556) ~[spring-core-5.0.2.RELEASE.jar:5.0.2.RELEASE]
    at org.springframework.util.ReflectionUtils.doWithMethods(ReflectionUtils.java:541) ~[spring-core-5.0.2.RELEASE.jar:5.0.2.RELEASE]
    at org.springframework.util.ReflectionUtils.getUniqueDeclaredMethods(ReflectionUtils.java:599) ~[spring-core-5.0.2.RELEASE.jar:5.0.2.RELEASE]
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.getTypeForFactoryMethod(AbstractAutowireCapableBeanFactory.java:728) ~[spring-beans-5.0.2.RELEASE.jar:5.0.2.RELEASE]
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.determineTargetType(AbstractAutowireCapableBeanFactory.java:669) ~[spring-beans-5.0.2.RELEASE.jar:5.0.2.RELEASE]
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.predictBeanType(AbstractAutowireCapableBeanFactory.java:637) ~[spring-beans-5.0.2.RELEASE.jar:5.0.2.RELEASE]
    at org.springframework.beans.factory.support.AbstractBeanFactory.isFactoryBean(AbstractBeanFactory.java:1489) ~[spring-beans-5.0.2.RELEASE.jar:5.0.2.RELEASE]
    at org.springframework.beans.factory.support.AbstractBeanFactory.isFactoryBean(AbstractBeanFactory.java:1007) ~[spring-beans-5.0.2.RELEASE.jar:5.0.2.RELEASE]
    at org.springframework.boot.autoconfigure.condition.BeanTypeRegistry.addBeanTypeForNonAliasDefinition(BeanTypeRegistry.java:164) ~[spring-boot-autoconfigure-2.0.3.RELEASE.jar:2.0.3.RELEASE]
    at org.springframework.boot.autoconfigure.condition.BeanTypeRegistry.addBeanType(BeanTypeRegistry.java:153) ~[spring-boot-autoconfigure-2.0.3.RELEASE.jar:2.0.3.RELEASE]
    at org.springframework.boot.autoconfigure.condition.BeanTypeRegistry.updateTypesIfNecessary(BeanTypeRegistry.java:203) ~[spring-boot-autoconfigure-2.0.3.RELEASE.jar:2.0.3.RELEASE]
    at org.springframework.boot.autoconfigure.condition.BeanTypeRegistry.getNamesForType(BeanTypeRegistry.java:115) ~[spring-boot-autoconfigure-2.0.3.RELEASE.jar:2.0.3.RELEASE]
    at org.springframework.boot.autoconfigure.condition.OnBeanCondition.collectBeanNamesForType(OnBeanCondition.java:265) ~[spring-boot-autoconfigure-2.0.3.RELEASE.jar:2.0.3.RELEASE]
    at org.springframework.boot.autoconfigure.condition.OnBeanCondition.getBeanNamesForType(OnBeanCondition.java:254) ~[spring-boot-autoconfigure-2.0.3.RELEASE.jar:2.0.3.RELEASE]
    at org.springframework.boot.autoconfigure.condition.OnBeanCondition.getMatchingBeans(OnBeanCondition.java:196) ~[spring-boot-autoconfigure-2.0.3.RELEASE.jar:2.0.3.RELEASE]
    at org.springframework.boot.autoconfigure.condition.OnBeanCondition.getMatchOutcome(OnBeanCondition.java:116) ~[spring-boot-autoconfigure-2.0.3.RELEASE.jar:2.0.3.RELEASE]
    at org.springframework.boot.autoconfigure.condition.SpringBootCondition.matches(SpringBootCondition.java:47) ~[spring-boot-autoconfigure-2.0.3.RELEASE.jar:2.0.3.RELEASE]
    ... 22 common frames omitted
Caused by: java.lang.NoClassDefFoundError: org/springframework/data/redis/connection/lettuce/LettuceClientConfiguration$LettuceClientConfigurationBuilder
    at java.lang.Class.getDeclaredMethods0(Native Method) ~[na:1.8.0_60]
    at java.lang.Class.privateGetDeclaredMethods(Class.java:2701) ~[na:1.8.0_60]
    at java.lang.Class.getDeclaredMethods(Class.java:1975) ~[na:1.8.0_60]
    at org.springframework.util.ReflectionUtils.getDeclaredMethods(ReflectionUtils.java:641) ~[spring-core-5.0.2.RELEASE.jar:5.0.2.RELEASE]
    ... 39 common frames omitted
Caused by: java.lang.ClassNotFoundException: org.springframework.data.redis.connection.lettuce.LettuceClientConfiguration$LettuceClientConfigurationBuilder
    at java.net.URLClassLoader.findClass(URLClassLoader.java:381) ~[na:1.8.0_60]
    at java.lang.ClassLoader.loadClass(ClassLoader.java:424) ~[na:1.8.0_60]
    at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:331) ~[na:1.8.0_60]
    at java.lang.ClassLoader.loadClass(ClassLoader.java:357) ~[na:1.8.0_60]
    ... 43 common frames omitted

2018-07-25 15:55:35.655  INFO 10120 --- [  restartedMain] ConfigServletWebServerApplicationContext : Closing org.springframework.boot.web.servlet.context.AnnotationConfigServletWebServerApplicationContext@3b9fe34d: startup date [Wed Jul 25 15:55:33 CST 2018]; root of context hierarchy
2018-07-25 15:55:35.659  WARN 10120 --- [  restartedMain] o.s.boot.SpringApplication               : Unable to close ApplicationContext

java.lang.IllegalStateException: Failed to introspect Class [org.springframework.boot.autoconfigure.data.redis.LettuceConnectionConfiguration] from ClassLoader [sun.misc.Launcher$AppClassLoader@14dad5dc]
    at org.springframework.util.ReflectionUtils.getDeclaredMethods(ReflectionUtils.java:659) ~[spring-core-5.0.2.RELEASE.jar:5.0.2.RELEASE]
    at org.springframework.util.ReflectionUtils.doWithMethods(ReflectionUtils.java:556) ~[spring-core-5.0.2.RELEASE.jar:5.0.2.RELEASE]
    at org.springframework.util.ReflectionUtils.doWithMethods(ReflectionUtils.java:541) ~[spring-core-5.0.2.RELEASE.jar:5.0.2.RELEASE]
    at org.springframework.util.ReflectionUtils.getUniqueDeclaredMethods(ReflectionUtils.java:599) ~[spring-core-5.0.2.RELEASE.jar:5.0.2.RELEASE]
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.getTypeForFactoryMethod(AbstractAutowireCapableBeanFactory.java:728) ~[spring-beans-5.0.2.RELEASE.jar:5.0.2.RELEASE]
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.determineTargetType(AbstractAutowireCapableBeanFactory.java:669) ~[spring-beans-5.0.2.RELEASE.jar:5.0.2.RELEASE]
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.predictBeanType(AbstractAutowireCapableBeanFactory.java:637) ~[spring-beans-5.0.2.RELEASE.jar:5.0.2.RELEASE]
    at org.springframework.beans.factory.support.AbstractBeanFactory.isFactoryBean(AbstractBeanFactory.java:1489) ~[spring-beans-5.0.2.RELEASE.jar:5.0.2.RELEASE]
    at org.springframework.beans.factory.support.DefaultListableBeanFactory.doGetBeanNamesForType(DefaultListableBeanFactory.java:421) ~[spring-beans-5.0.2.RELEASE.jar:5.0.2.RELEASE]
    at org.springframework.beans.factory.support.DefaultListableBeanFactory.getBeanNamesForType(DefaultListableBeanFactory.java:391) ~[spring-beans-5.0.2.RELEASE.jar:5.0.2.RELEASE]
    at org.springframework.beans.factory.support.DefaultListableBeanFactory.getBeansOfType(DefaultListableBeanFactory.java:512) ~[spring-beans-5.0.2.RELEASE.jar:5.0.2.RELEASE]
    at org.springframework.beans.factory.support.DefaultListableBeanFactory.getBeansOfType(DefaultListableBeanFactory.java:504) ~[spring-beans-5.0.2.RELEASE.jar:5.0.2.RELEASE]
    at org.springframework.context.support.AbstractApplicationContext.getBeansOfType(AbstractApplicationContext.java:1194) ~[spring-context-5.0.2.RELEASE.jar:5.0.2.RELEASE]
    at org.springframework.boot.SpringApplication.getExitCodeFromMappedException(SpringApplication.java:889) [spring-boot-2.0.3.RELEASE.jar:2.0.3.RELEASE]
    at org.springframework.boot.SpringApplication.getExitCodeFromException(SpringApplication.java:875) [spring-boot-2.0.3.RELEASE.jar:2.0.3.RELEASE]
    at org.springframework.boot.SpringApplication.handleExitCode(SpringApplication.java:861) [spring-boot-2.0.3.RELEASE.jar:2.0.3.RELEASE]
    at org.springframework.boot.SpringApplication.handleRunFailure(SpringApplication.java:810) [spring-boot-2.0.3.RELEASE.jar:2.0.3.RELEASE]
    at org.springframework.boot.SpringApplication.run(SpringApplication.java:338) [spring-boot-2.0.3.RELEASE.jar:2.0.3.RELEASE]
    at org.springframework.boot.SpringApplication.run(SpringApplication.java:1255) [spring-boot-2.0.3.RELEASE.jar:2.0.3.RELEASE]
    at org.springframework.boot.SpringApplication.run(SpringApplication.java:1243) [spring-boot-2.0.3.RELEASE.jar:2.0.3.RELEASE]
    at com.neo.SpringBoot.Application.main(Application.java:10) [classes/:na]
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[na:1.8.0_60]
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) ~[na:1.8.0_60]
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[na:1.8.0_60]
    at java.lang.reflect.Method.invoke(Method.java:497) ~[na:1.8.0_60]
    at org.springframework.boot.devtools.restart.RestartLauncher.run(RestartLauncher.java:49) [spring-boot-devtools-2.0.3.RELEASE.jar:2.0.3.RELEASE]
Caused by: java.lang.NoClassDefFoundError: org/springframework/data/redis/connection/lettuce/LettuceClientConfiguration$LettuceClientConfigurationBuilder
    at java.lang.Class.getDeclaredMethods0(Native Method) ~[na:1.8.0_60]
    at java.lang.Class.privateGetDeclaredMethods(Class.java:2701) ~[na:1.8.0_60]
    at java.lang.Class.getDeclaredMethods(Class.java:1975) ~[na:1.8.0_60]
    at org.springframework.util.ReflectionUtils.getDeclaredMethods(ReflectionUtils.java:641) ~[spring-core-5.0.2.RELEASE.jar:5.0.2.RELEASE]
    ... 25 common frames omitted
Caused by: java.lang.ClassNotFoundException: org.springframework.data.redis.connection.lettuce.LettuceClientConfiguration$LettuceClientConfigurationBuilder
    at java.net.URLClassLoader.findClass(URLClassLoader.java:381) ~[na:1.8.0_60]
    at java.lang.ClassLoader.loadClass(ClassLoader.java:424) ~[na:1.8.0_60]
    at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:331) ~[na:1.8.0_60]
    at java.lang.ClassLoader.loadClass(ClassLoader.java:357) ~[na:1.8.0_60]
    ... 29 common frames omitted

想着为何还是出问题，于是debug了一番，发现出问题的异常包括：

Caused by: java.lang.NoClassDefFoundError: org/springframework/data/redis/connection/lettuce/LettuceClientConfiguration$LettuceClientConfigurationBuilder
    at java.lang.Class.getDeclaredMethods0(Native Method) ~[na:1.8.0_60]
    at java.lang.Class.privateGetDeclaredMethods(Class.java:2701) ~[na:1.8.0_60]
    at java.lang.Class.getDeclaredMethods(Class.java:1975) ~[na:1.8.0_60]
    at org.springframework.util.ReflectionUtils.getDeclaredMethods(ReflectionUtils.java:641) ~[spring-core-5.0.2.RELEASE.jar:5.0.2.RELEASE]
    ... 25 common frames omitted
Caused by: java.lang.ClassNotFoundException: org.springframework.data.redis.connection.lettuce.LettuceClientConfiguration$LettuceClientConfigurationBuilder
    at java.net.URLClassLoader.findClass(URLClassLoader.java:381) ~[na:1.8.0_60]
    at java.lang.ClassLoader.loadClass(ClassLoader.java:424) ~[na:1.8.0_60]
    at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:331) ~[na:1.8.0_60]
    at java.lang.ClassLoader.loadClass(ClassLoader.java:357) ~[na:1.8.0_60]
    ... 29 common frames omitted

而这个异常正好是定位在spring-data-redis-1.7.1.RELEASE.jar，其他大部分jar版本是2.0.3，这个版本却是1.7.1，于是也将版本号同步改成2.0.3：
这里写图片描述

<dependency>
    <groupId>org.springframework.data</groupId>
    <artifactId>spring-data-redis</artifactId>
    <version>2.0.3.RELEASE</version>
</dependency>

再次启动SpringBoot：

package com.neo.SpringBoot;

import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;

@SpringBootApplication
public class Application {

    public static void main(String[] args) {
        SpringApplication.run(Application.class, args);
    }
}

这时，启动已经没有异常：

16:19:11.707 [main] DEBUG org.springframework.boot.devtools.settings.DevToolsSettings - Included patterns for restart : []
16:19:11.710 [main] DEBUG org.springframework.boot.devtools.settings.DevToolsSettings - Excluded patterns for restart : [/spring-boot-actuator/target/classes/, /spring-boot-devtools/target/classes/, /spring-boot/target/classes/, /spring-boot-starter-[\w-]+/, /spring-boot-autoconfigure/target/classes/, /spring-boot-starter/target/classes/]
16:19:11.711 [main] DEBUG org.springframework.boot.devtools.restart.ChangeableUrls - Matching URLs for reloading : [file:/D:/workspace/SpringBoot/target/classes/]

  .   ____          _            __ _ _
 /\\ / ___'_ __ _ _(_)_ __  __ _ \ \ \ \
( ( )\___ | '_ | '_| | '_ \/ _` | \ \ \ \
 \\/  ___)| |_)| | | | | || (_| |  ) ) ) )
  '  |____| .__|_| |_|_| |_\__, | / / / /
 =========|_|==============|___/=/_/_/_/
 :: Spring Boot ::        (v2.0.3.RELEASE)

2018-07-25 16:19:12.180  INFO 11180 --- [  restartedMain] com.neo.SpringBoot.Application           : Starting Application on SZ10PD0703 with PID 11180 (D:\workspace\SpringBoot\target\classes started by nicoletang in D:\workspace\SpringBoot)
2018-07-25 16:19:12.184  INFO 11180 --- [  restartedMain] com.neo.SpringBoot.Application           : No active profile set, falling back to default profiles: default
2018-07-25 16:19:12.312  INFO 11180 --- [  restartedMain] ConfigServletWebServerApplicationContext : Refreshing org.springframework.boot.web.servlet.context.AnnotationConfigServletWebServerApplicationContext@2396c4c2: startup date [Wed Jul 25 16:19:12 CST 2018]; root of context hierarchy
2018-07-25 16:19:13.974  INFO 11180 --- [  restartedMain] .s.d.r.c.RepositoryConfigurationDelegate : Multiple Spring Data modules found, entering strict repository configuration mode!
2018-07-25 16:19:14.056  INFO 11180 --- [  restartedMain] .RepositoryConfigurationExtensionSupport : Spring Data Redis - Could not safely identify store assignment for repository candidate interface com.neo.SpringBoot.repository.UserRepository.
2018-07-25 16:19:14.115  INFO 11180 --- [  restartedMain] o.s.b.f.s.DefaultListableBeanFactory     : Overriding bean definition for bean 'dataSource' with a different definition: replacing [Root bean: class [null]; scope=; abstract=false; lazyInit=false; autowireMode=3; dependencyCheck=0; autowireCandidate=true; primary=false; factoryBeanName=org.springframework.boot.autoconfigure.jdbc.DataSourceConfiguration$Tomcat; factoryMethodName=dataSource; initMethodName=null; destroyMethodName=(inferred); defined in class path resource [org/springframework/boot/autoconfigure/jdbc/DataSourceConfiguration$Tomcat.class]] with [Root bean: class [null]; scope=; abstract=false; lazyInit=false; autowireMode=3; dependencyCheck=0; autowireCandidate=true; primary=false; factoryBeanName=org.springframework.boot.autoconfigure.jdbc.DataSourceConfiguration$Hikari; factoryMethodName=dataSource; initMethodName=null; destroyMethodName=(inferred); defined in class path resource [org/springframework/boot/autoconfigure/jdbc/DataSourceConfiguration$Hikari.class]]
2018-07-25 16:19:14.938  INFO 11180 --- [  restartedMain] trationDelegate$BeanPostProcessorChecker : Bean 'org.springframework.transaction.annotation.ProxyTransactionManagementConfiguration' of type [org.springframework.transaction.annotation.ProxyTransactionManagementConfiguration$$EnhancerBySpringCGLIB$$b3093769] is not eligible for getting processed by all BeanPostProcessors (for example: not eligible for auto-proxying)
2018-07-25 16:19:14.999  INFO 11180 --- [  restartedMain] trationDelegate$BeanPostProcessorChecker : Bean 'redisConfig' of type [com.neo.SpringBoot.config.RedisConfig$$EnhancerBySpringCGLIB$$7f59edcb] is not eligible for getting processed by all BeanPostProcessors (for example: not eligible for auto-proxying)
2018-07-25 16:19:15.006  INFO 11180 --- [  restartedMain] trationDelegate$BeanPostProcessorChecker : Bean 'org.springframework.cache.annotation.ProxyCachingConfiguration' of type [org.springframework.cache.annotation.ProxyCachingConfiguration$$EnhancerBySpringCGLIB$$fc1b6d87] is not eligible for getting processed by all BeanPostProcessors (for example: not eligible for auto-proxying)
2018-07-25 16:19:15.819  INFO 11180 --- [  restartedMain] o.s.b.w.embedded.tomcat.TomcatWebServer  : Tomcat initialized with port(s): 8080 (http)
2018-07-25 16:19:16.016  INFO 11180 --- [  restartedMain] o.apache.catalina.core.StandardService   : Starting service Tomcat
2018-07-25 16:19:16.016  INFO 11180 --- [  restartedMain] org.apache.catalina.core.StandardEngine  : Starting Servlet Engine: Apache Tomcat/8.5.12
2018-07-25 16:19:16.034  INFO 11180 --- [ost-startStop-1] o.a.catalina.core.AprLifecycleListener   : The APR based Apache Tomcat Native library which allows optimal performance in production environments was not found on the java.library.path: C:\Program Files\Java\jdk1.8.0_60\bin;C:\windows\Sun\Java\bin;C:\windows\system32;C:\windows;C:\ProgramData\Oracle\Java\javapath;F:\oracle\product\10.2.0\client_1;C:\Program Files\Java\jdk1.8.0_60\bin;C:\Program Files\Common Files\Microsoft Shared\Windows Live;C:\Program Files (x86)\Common Files\Microsoft Shared\Windows Live;C:\Program Files (x86)\Intel\iCLS Client\;C:\Program Files\Intel\iCLS Client\;C:\windows\system32;C:\windows;C:\windows\System32\Wbem;C:\windows\System32\WindowsPowerShell\v1.0\;C:\Program Files\Intel\Intel(R) Management Engine Components\DAL;C:\Program Files\Intel\Intel(R) Management Engine Components\IPT;C:\Program Files (x86)\Intel\Intel(R) Management Engine Components\DAL;C:\Program Files (x86)\Intel\Intel(R) Management Engine Components\IPT;C:\Program Files\Dell\Dell Data Protection\Access\Advanced\Wave\Gemalto\Access Client\v5\;C:\Program Files (x86)\Security Innovation\SI TSS\bin\;C:\Program Files (x86)\Windows Live\Shared;D:\cvsnt;C:\Program Files\TortoiseSVN\bin;D:\apache-maven-3.5.0-bin\bin;C:\Program Files\MySQL\MySQL Server 5.7\bin;D:\nodejs;D:\nodejs\;D:\nodejs\node_global\;F:\need software\jx_win64v8\;%CATALINA_HOME\bin%;D:\apache-ant-1.9.6\bin\;D:\gradle-3.4.1\bin;D:\Python27;D:\Python27\Scripts;C:\Users\nicoletang\AppData\Roaming\npm;.
2018-07-25 16:19:16.384  INFO 11180 --- [ost-startStop-1] org.apache.jasper.servlet.TldScanner     : At least one JAR was scanned for TLDs yet contained no TLDs. Enable debug logging for this logger for a complete list of JARs that were scanned but no TLDs were found in them. Skipping unneeded JARs during scanning can improve startup time and JSP compilation time.
2018-07-25 16:19:16.390  INFO 11180 --- [ost-startStop-1] o.a.c.c.C.[Tomcat].[localhost].[/]       : Initializing Spring embedded WebApplicationContext
2018-07-25 16:19:16.390  INFO 11180 --- [ost-startStop-1] o.s.web.context.ContextLoader            : Root WebApplicationContext: initialization completed in 4083 ms
2018-07-25 16:19:17.171  INFO 11180 --- [ost-startStop-1] o.s.b.w.servlet.FilterRegistrationBean   : Mapping filter: 'characterEncodingFilter' to: [/*]
2018-07-25 16:19:17.172  INFO 11180 --- [ost-startStop-1] o.s.b.w.servlet.FilterRegistrationBean   : Mapping filter: 'sessionRepositoryFilter' to: [/*]
2018-07-25 16:19:17.172  INFO 11180 --- [ost-startStop-1] o.s.b.w.servlet.FilterRegistrationBean   : Mapping filter: 'hiddenHttpMethodFilter' to: [/*]
2018-07-25 16:19:17.172  INFO 11180 --- [ost-startStop-1] o.s.b.w.servlet.FilterRegistrationBean   : Mapping filter: 'httpPutFormContentFilter' to: [/*]
2018-07-25 16:19:17.172  INFO 11180 --- [ost-startStop-1] o.s.b.w.servlet.FilterRegistrationBean   : Mapping filter: 'requestContextFilter' to: [/*]
2018-07-25 16:19:17.172  INFO 11180 --- [ost-startStop-1] o.s.b.w.servlet.FilterRegistrationBean   : Mapping filter: 'remoteIpFilter' to: [/*]
2018-07-25 16:19:17.172  INFO 11180 --- [ost-startStop-1] o.s.b.w.servlet.ServletRegistrationBean  : Servlet dispatcherServlet mapped to [/]
2018-07-25 16:19:17.234  WARN 11180 --- [  restartedMain] ConfigServletWebServerApplicationContext : Exception encountered during context initialization - cancelling refresh attempt: org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'inMemoryDatabaseShutdownExecutor' defined in class path resource [org/springframework/boot/devtools/autoconfigure/DevToolsDataSourceAutoConfiguration.class]: Unsatisfied dependency expressed through method 'inMemoryDatabaseShutdownExecutor' parameter 0; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'dataSource' defined in class path resource [org/springframework/boot/autoconfigure/jdbc/DataSourceConfiguration$Hikari.class]: Bean instantiation via factory method failed; nested exception is org.springframework.beans.BeanInstantiationException: Failed to instantiate [com.zaxxer.hikari.HikariDataSource]: Factory method 'dataSource' threw exception; nested exception is org.springframework.boot.autoconfigure.jdbc.DataSourceProperties$DataSourceBeanCreationException: Failed to determine a suitable driver class
2018-07-25 16:19:17.263  INFO 11180 --- [  restartedMain] o.apache.catalina.core.StandardService   : Stopping service Tomcat
2018-07-25 16:19:17.299  INFO 11180 --- [  restartedMain] ConditionEvaluationReportLoggingListener : 

Error starting ApplicationContext. To display the conditions report re-run your application with 'debug' enabled.
2018-07-25 16:19:17.302 ERROR 11180 --- [  restartedMain] o.s.b.d.LoggingFailureAnalysisReporter   : 

***************************
APPLICATION FAILED TO START
***************************

Description:

Failed to configure a DataSource: 'url' attribute is not specified and no embedded datasource could be configured.

Reason: Failed to determine a suitable driver class


Action:

Consider the following:
    If you want an embedded database (H2, HSQL or Derby), please put it on the classpath.
    If you have database settings to be loaded from a particular profile you may need to activate it (no profiles are currently active).

注意看看Description：

Description:

Failed to configure a DataSource: 'url' attribute is not specified and no embedded datasource could be configured.

Reason: Failed to determine a suitable driver class


Action:

Consider the following:
    If you want an embedded database (H2, HSQL or Derby), please put it on the classpath.
    If you have database settings to be loaded from a particular profile you may need to activate it (no profiles are currently active).

在这里说明没有配置数据源，没有指定的url属性，没有嵌入的数据源可以配置。可以采取的措施有：
1、如果想要一个嵌入式数据库(H2,HSQL或Derby),请把它放到类路径中。
2、如果有加载数据库设置从一个特定的配置文件,可能需要激活它。

采用第二种方法，在多方查证后，需要在启动类的@EnableAutoConfiguration或@SpringBootApplication中添加exclude= {DataSourceAutoConfiguration.class}，排除此类的autoconfig。启动以后就可以正常运行。这是因为添加了数据库组件，所以autoconfig会去读取数据源配置，而我新建的项目还没有配置数据源，所以会导致异常出现。

因此，直接在@SpringBootApplication后面加上(exclude= {DataSourceAutoConfiguration.class})即可

package com.neo.SpringBoot;

import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.boot.autoconfigure.jdbc.DataSourceAutoConfiguration;

@SpringBootApplication(exclude= {DataSourceAutoConfiguration.class})
public class Application {

    public static void main(String[] args) {
        SpringApplication.run(Application.class, args);
    }
}

事情还是没那么简单，这里连接Redis失败，因为本地没有开启Redis服务器

17:08:23.198 [main] DEBUG org.springframework.boot.devtools.settings.DevToolsSettings - Included patterns for restart : []
17:08:23.202 [main] DEBUG org.springframework.boot.devtools.settings.DevToolsSettings - Excluded patterns for restart : [/spring-boot-actuator/target/classes/, /spring-boot-devtools/target/classes/, /spring-boot/target/classes/, /spring-boot-starter-[\w-]+/, /spring-boot-autoconfigure/target/classes/, /spring-boot-starter/target/classes/]
17:08:23.202 [main] DEBUG org.springframework.boot.devtools.restart.ChangeableUrls - Matching URLs for reloading : [file:/D:/workspace/SpringBoot/target/classes/]

  .   ____          _            __ _ _
 /\\ / ___'_ __ _ _(_)_ __  __ _ \ \ \ \
( ( )\___ | '_ | '_| | '_ \/ _` | \ \ \ \
 \\/  ___)| |_)| | | | | || (_| |  ) ) ) )
  '  |____| .__|_| |_|_| |_\__, | / / / /
 =========|_|==============|___/=/_/_/_/
 :: Spring Boot ::        (v2.0.3.RELEASE)

2018-07-25 17:08:23.743  INFO 12944 --- [  restartedMain] com.neo.SpringBoot.Application           : Starting Application on SZ10PD0703 with PID 12944 (D:\workspace\SpringBoot\target\classes started by nicoletang in D:\workspace\SpringBoot)
2018-07-25 17:08:23.745  INFO 12944 --- [  restartedMain] com.neo.SpringBoot.Application           : No active profile set, falling back to default profiles: default
2018-07-25 17:08:23.885  INFO 12944 --- [  restartedMain] ConfigServletWebServerApplicationContext : Refreshing org.springframework.boot.web.servlet.context.AnnotationConfigServletWebServerApplicationContext@3dda9ddd: startup date [Wed Jul 25 17:08:23 CST 2018]; root of context hierarchy
2018-07-25 17:08:25.491  INFO 12944 --- [  restartedMain] .s.d.r.c.RepositoryConfigurationDelegate : Multiple Spring Data modules found, entering strict repository configuration mode!
2018-07-25 17:08:25.597  INFO 12944 --- [  restartedMain] .RepositoryConfigurationExtensionSupport : Spring Data Redis - Could not safely identify store assignment for repository candidate interface com.neo.SpringBoot.repository.UserRepository.
2018-07-25 17:08:26.417  INFO 12944 --- [  restartedMain] trationDelegate$BeanPostProcessorChecker : Bean 'redisConfig' of type [com.neo.SpringBoot.config.RedisConfig$$EnhancerBySpringCGLIB$$fe5682b6] is not eligible for getting processed by all BeanPostProcessors (for example: not eligible for auto-proxying)
2018-07-25 17:08:26.424  INFO 12944 --- [  restartedMain] trationDelegate$BeanPostProcessorChecker : Bean 'org.springframework.cache.annotation.ProxyCachingConfiguration' of type [org.springframework.cache.annotation.ProxyCachingConfiguration$$EnhancerBySpringCGLIB$$7b180272] is not eligible for getting processed by all BeanPostProcessors (for example: not eligible for auto-proxying)
2018-07-25 17:08:27.189  INFO 12944 --- [  restartedMain] o.s.b.w.embedded.tomcat.TomcatWebServer  : Tomcat initialized with port(s): 8080 (http)
2018-07-25 17:08:27.232  INFO 12944 --- [  restartedMain] o.apache.catalina.core.StandardService   : Starting service Tomcat
2018-07-25 17:08:27.233  INFO 12944 --- [  restartedMain] org.apache.catalina.core.StandardEngine  : Starting Servlet Engine: Apache Tomcat/8.5.12
2018-07-25 17:08:27.252  INFO 12944 --- [ost-startStop-1] o.a.catalina.core.AprLifecycleListener   : The APR based Apache Tomcat Native library which allows optimal performance in production environments was not found on the java.library.path: C:\Program Files\Java\jdk1.8.0_60\bin;C:\windows\Sun\Java\bin;C:\windows\system32;C:\windows;C:\ProgramData\Oracle\Java\javapath;F:\oracle\product\10.2.0\client_1;C:\Program Files\Java\jdk1.8.0_60\bin;C:\Program Files\Common Files\Microsoft Shared\Windows Live;C:\Program Files (x86)\Common Files\Microsoft Shared\Windows Live;C:\Program Files (x86)\Intel\iCLS Client\;C:\Program Files\Intel\iCLS Client\;C:\windows\system32;C:\windows;C:\windows\System32\Wbem;C:\windows\System32\WindowsPowerShell\v1.0\;C:\Program Files\Intel\Intel(R) Management Engine Components\DAL;C:\Program Files\Intel\Intel(R) Management Engine Components\IPT;C:\Program Files (x86)\Intel\Intel(R) Management Engine Components\DAL;C:\Program Files (x86)\Intel\Intel(R) Management Engine Components\IPT;C:\Program Files\Dell\Dell Data Protection\Access\Advanced\Wave\Gemalto\Access Client\v5\;C:\Program Files (x86)\Security Innovation\SI TSS\bin\;C:\Program Files (x86)\Windows Live\Shared;D:\cvsnt;C:\Program Files\TortoiseSVN\bin;D:\apache-maven-3.5.0-bin\bin;C:\Program Files\MySQL\MySQL Server 5.7\bin;D:\nodejs;D:\nodejs\;D:\nodejs\node_global\;F:\need software\jx_win64v8\;%CATALINA_HOME\bin%;D:\apache-ant-1.9.6\bin\;D:\gradle-3.4.1\bin;D:\Python27;D:\Python27\Scripts;C:\Users\nicoletang\AppData\Roaming\npm;.
2018-07-25 17:08:27.713  INFO 12944 --- [ost-startStop-1] org.apache.jasper.servlet.TldScanner     : At least one JAR was scanned for TLDs yet contained no TLDs. Enable debug logging for this logger for a complete list of JARs that were scanned but no TLDs were found in them. Skipping unneeded JARs during scanning can improve startup time and JSP compilation time.
2018-07-25 17:08:27.719  INFO 12944 --- [ost-startStop-1] o.a.c.c.C.[Tomcat].[localhost].[/]       : Initializing Spring embedded WebApplicationContext
2018-07-25 17:08:27.720  INFO 12944 --- [ost-startStop-1] o.s.web.context.ContextLoader            : Root WebApplicationContext: initialization completed in 3840 ms
2018-07-25 17:08:28.522  INFO 12944 --- [ost-startStop-1] o.s.b.w.servlet.FilterRegistrationBean   : Mapping filter: 'characterEncodingFilter' to: [/*]
2018-07-25 17:08:28.522  INFO 12944 --- [ost-startStop-1] o.s.b.w.servlet.FilterRegistrationBean   : Mapping filter: 'sessionRepositoryFilter' to: [/*]
2018-07-25 17:08:28.522  INFO 12944 --- [ost-startStop-1] o.s.b.w.servlet.FilterRegistrationBean   : Mapping filter: 'hiddenHttpMethodFilter' to: [/*]
2018-07-25 17:08:28.523  INFO 12944 --- [ost-startStop-1] o.s.b.w.servlet.FilterRegistrationBean   : Mapping filter: 'httpPutFormContentFilter' to: [/*]
2018-07-25 17:08:28.523  INFO 12944 --- [ost-startStop-1] o.s.b.w.servlet.FilterRegistrationBean   : Mapping filter: 'requestContextFilter' to: [/*]
2018-07-25 17:08:28.523  INFO 12944 --- [ost-startStop-1] o.s.b.w.servlet.FilterRegistrationBean   : Mapping filter: 'remoteIpFilter' to: [/*]
2018-07-25 17:08:28.523  INFO 12944 --- [ost-startStop-1] o.s.b.w.servlet.ServletRegistrationBean  : Servlet dispatcherServlet mapped to [/]
2018-07-25 17:08:28.797  INFO 12944 --- [  restartedMain] io.lettuce.core.EpollProvider            : Starting without optional epoll library
2018-07-25 17:08:28.800  INFO 12944 --- [  restartedMain] io.lettuce.core.KqueueProvider           : Starting without optional kqueue library
2018-07-25 17:08:30.147  WARN 12944 --- [  restartedMain] ConfigServletWebServerApplicationContext : Exception encountered during context initialization - cancelling refresh attempt: org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'enableRedisKeyspaceNotificationsInitializer' defined in class path resource [org/springframework/session/data/redis/config/annotation/web/http/RedisHttpSessionConfiguration.class]: Invocation of init method failed; nested exception is org.springframework.data.redis.RedisConnectionFailureException: Unable to connect to Redis; nested exception is io.lettuce.core.RedisConnectionException: Unable to connect to localhost:6379
2018-07-25 17:08:31.279  INFO 12944 --- [  restartedMain] o.apache.catalina.core.StandardService   : Stopping service Tomcat
2018-07-25 17:08:31.307  INFO 12944 --- [  restartedMain] ConditionEvaluationReportLoggingListener : 

Error starting ApplicationContext. To display the conditions report re-run your application with 'debug' enabled.
2018-07-25 17:08:31.315 ERROR 12944 --- [  restartedMain] o.s.boot.SpringApplication               : Application run failed

org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'enableRedisKeyspaceNotificationsInitializer' defined in class path resource [org/springframework/session/data/redis/config/annotation/web/http/RedisHttpSessionConfiguration.class]: Invocation of init method failed; nested exception is org.springframework.data.redis.RedisConnectionFailureException: Unable to connect to Redis; nested exception is io.lettuce.core.RedisConnectionException: Unable to connect to localhost:6379
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1710) ~[spring-beans-5.0.2.RELEASE.jar:5.0.2.RELEASE]
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:583) ~[spring-beans-5.0.2.RELEASE.jar:5.0.2.RELEASE]
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:502) ~[spring-beans-5.0.2.RELEASE.jar:5.0.2.RELEASE]
    at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:312) ~[spring-beans-5.0.2.RELEASE.jar:5.0.2.RELEASE]
    at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:228) ~[spring-beans-5.0.2.RELEASE.jar:5.0.2.RELEASE]
    at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:310) ~[spring-beans-5.0.2.RELEASE.jar:5.0.2.RELEASE]
    at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:200) ~[spring-beans-5.0.2.RELEASE.jar:5.0.2.RELEASE]
    at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:758) ~[spring-beans-5.0.2.RELEASE.jar:5.0.2.RELEASE]
    at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:868) ~[spring-context-5.0.2.RELEASE.jar:5.0.2.RELEASE]
    at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:549) ~[spring-context-5.0.2.RELEASE.jar:5.0.2.RELEASE]
    at org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext.refresh(ServletWebServerApplicationContext.java:140) ~[spring-boot-2.0.3.RELEASE.jar:2.0.3.RELEASE]
    at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:759) [spring-boot-2.0.3.RELEASE.jar:2.0.3.RELEASE]
    at org.springframework.boot.SpringApplication.refreshContext(SpringApplication.java:395) [spring-boot-2.0.3.RELEASE.jar:2.0.3.RELEASE]
    at org.springframework.boot.SpringApplication.run(SpringApplication.java:327) [spring-boot-2.0.3.RELEASE.jar:2.0.3.RELEASE]
    at org.springframework.boot.SpringApplication.run(SpringApplication.java:1255) [spring-boot-2.0.3.RELEASE.jar:2.0.3.RELEASE]
    at org.springframework.boot.SpringApplication.run(SpringApplication.java:1243) [spring-boot-2.0.3.RELEASE.jar:2.0.3.RELEASE]
    at com.neo.SpringBoot.Application.main(Application.java:11) [classes/:na]
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[na:1.8.0_60]
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) ~[na:1.8.0_60]
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[na:1.8.0_60]
    at java.lang.reflect.Method.invoke(Method.java:497) ~[na:1.8.0_60]
    at org.springframework.boot.devtools.restart.RestartLauncher.run(RestartLauncher.java:49) [spring-boot-devtools-2.0.3.RELEASE.jar:2.0.3.RELEASE]
Caused by: org.springframework.data.redis.RedisConnectionFailureException: Unable to connect to Redis; nested exception is io.lettuce.core.RedisConnectionException: Unable to connect to localhost:6379
    at org.springframework.data.redis.connection.lettuce.LettuceConnectionFactory$SharedConnection.getNativeConnection(LettuceConnectionFactory.java:964) ~[spring-data-redis-2.0.3.RELEASE.jar:2.0.3.RELEASE]
    at org.springframework.data.redis.connection.lettuce.LettuceConnectionFactory$SharedConnection.getConnection(LettuceConnectionFactory.java:932) ~[spring-data-redis-2.0.3.RELEASE.jar:2.0.3.RELEASE]
    at org.springframework.data.redis.connection.lettuce.LettuceConnectionFactory.getSharedConnection(LettuceConnectionFactory.java:785) ~[spring-data-redis-2.0.3.RELEASE.jar:2.0.3.RELEASE]
    at org.springframework.data.redis.connection.lettuce.LettuceConnectionFactory.getConnection(LettuceConnectionFactory.java:299) ~[spring-data-redis-2.0.3.RELEASE.jar:2.0.3.RELEASE]
    at org.springframework.session.data.redis.config.annotation.web.http.RedisHttpSessionConfiguration$EnableRedisKeyspaceNotificationsInitializer.afterPropertiesSet(RedisHttpSessionConfiguration.java:284) ~[spring-session-data-redis-2.0.3.RELEASE.jar:2.0.3.RELEASE]
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.invokeInitMethods(AbstractAutowireCapableBeanFactory.java:1769) ~[spring-beans-5.0.2.RELEASE.jar:5.0.2.RELEASE]
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1706) ~[spring-beans-5.0.2.RELEASE.jar:5.0.2.RELEASE]
    ... 21 common frames omitted
Caused by: io.lettuce.core.RedisConnectionException: Unable to connect to localhost:6379
    at io.lettuce.core.RedisConnectionException.create(RedisConnectionException.java:56) ~[lettuce-core-5.0.4.RELEASE.jar:na]
    at io.lettuce.core.AbstractRedisClient.getConnection(AbstractRedisClient.java:233) ~[lettuce-core-5.0.4.RELEASE.jar:na]
    at io.lettuce.core.RedisClient.connectStandalone(RedisClient.java:253) ~[lettuce-core-5.0.4.RELEASE.jar:na]
    at io.lettuce.core.RedisClient.connect(RedisClient.java:202) ~[lettuce-core-5.0.4.RELEASE.jar:na]
    at org.springframework.data.redis.connection.lettuce.StandaloneConnectionProvider.getConnection(StandaloneConnectionProvider.java:56) ~[spring-data-redis-2.0.3.RELEASE.jar:2.0.3.RELEASE]
    at org.springframework.data.redis.connection.lettuce.LettuceConnectionFactory$SharedConnection.getNativeConnection(LettuceConnectionFactory.java:957) ~[spring-data-redis-2.0.3.RELEASE.jar:2.0.3.RELEASE]
    ... 27 common frames omitted
Caused by: io.netty.channel.AbstractChannel$AnnotatedConnectException: Connection refused: no further information: localhost/127.0.0.1:6379
    at sun.nio.ch.SocketChannelImpl.checkConnect(Native Method) ~[na:1.8.0_60]
    at sun.nio.ch.SocketChannelImpl.finishConnect(SocketChannelImpl.java:717) ~[na:1.8.0_60]
    at io.netty.channel.socket.nio.NioSocketChannel.doFinishConnect(NioSocketChannel.java:325) ~[netty-transport-4.1.25.Final.jar:4.1.25.Final]
    at io.netty.channel.nio.AbstractNioChannel$AbstractNioUnsafe.finishConnect(AbstractNioChannel.java:340) ~[netty-transport-4.1.25.Final.jar:4.1.25.Final]
    at io.netty.channel.nio.NioEventLoop.processSelectedKey(NioEventLoop.java:635) ~[netty-transport-4.1.25.Final.jar:4.1.25.Final]
    at io.netty.channel.nio.NioEventLoop.processSelectedKeysOptimized(NioEventLoop.java:582) ~[netty-transport-4.1.25.Final.jar:4.1.25.Final]
    at io.netty.channel.nio.NioEventLoop.processSelectedKeys(NioEventLoop.java:499) ~[netty-transport-4.1.25.Final.jar:4.1.25.Final]
    at io.netty.channel.nio.NioEventLoop.run(NioEventLoop.java:461) ~[netty-transport-4.1.25.Final.jar:4.1.25.Final]
    at io.netty.util.concurrent.SingleThreadEventExecutor$5.run(SingleThreadEventExecutor.java:884) ~[netty-common-4.1.25.Final.jar:4.1.25.Final]
    at io.netty.util.concurrent.FastThreadLocalRunnable.run(FastThreadLocalRunnable.java:30) ~[netty-common-4.1.25.Final.jar:4.1.25.Final]
    at java.lang.Thread.run(Thread.java:745) ~[na:1.8.0_60]
Caused by: java.net.ConnectException: Connection refused: no further information
    ... 11 common frames omitted

想要开启Redis服务器，必须在本地安装Redis，启动成功之后的Redis服务器端：
这里写图片描述

这时，再次运行Application类，还是出现了问题，报错异常如下：

17:45:55.532 [main] DEBUG org.springframework.boot.devtools.settings.DevToolsSettings - Included patterns for restart : []
17:45:55.537 [main] DEBUG org.springframework.boot.devtools.settings.DevToolsSettings - Excluded patterns for restart : [/spring-boot-actuator/target/classes/, /spring-boot-devtools/target/classes/, /spring-boot/target/classes/, /spring-boot-starter-[\w-]+/, /spring-boot-autoconfigure/target/classes/, /spring-boot-starter/target/classes/]
17:45:55.537 [main] DEBUG org.springframework.boot.devtools.restart.ChangeableUrls - Matching URLs for reloading : [file:/D:/workspace/SpringBoot/target/classes/]

  .   ____          _            __ _ _
 /\\ / ___'_ __ _ _(_)_ __  __ _ \ \ \ \
( ( )\___ | '_ | '_| | '_ \/ _` | \ \ \ \
 \\/  ___)| |_)| | | | | || (_| |  ) ) ) )
  '  |____| .__|_| |_|_| |_\__, | / / / /
 =========|_|==============|___/=/_/_/_/
 :: Spring Boot ::        (v2.0.3.RELEASE)

2018-07-25 17:45:56.110  INFO 13244 --- [  restartedMain] com.neo.SpringBoot.Application           : Starting Application on SZ10PD0703 with PID 13244 (D:\workspace\SpringBoot\target\classes started by nicoletang in D:\workspace\SpringBoot)
2018-07-25 17:45:56.113  INFO 13244 --- [  restartedMain] com.neo.SpringBoot.Application           : No active profile set, falling back to default profiles: default
2018-07-25 17:45:56.303  INFO 13244 --- [  restartedMain] ConfigServletWebServerApplicationContext : Refreshing org.springframework.boot.web.servlet.context.AnnotationConfigServletWebServerApplicationContext@440b3b96: startup date [Wed Jul 25 17:45:56 CST 2018]; root of context hierarchy
2018-07-25 17:45:57.996  INFO 13244 --- [  restartedMain] .s.d.r.c.RepositoryConfigurationDelegate : Multiple Spring Data modules found, entering strict repository configuration mode!
2018-07-25 17:45:58.073  INFO 13244 --- [  restartedMain] .RepositoryConfigurationExtensionSupport : Spring Data Redis - Could not safely identify store assignment for repository candidate interface com.neo.SpringBoot.repository.UserRepository.
2018-07-25 17:45:58.935  INFO 13244 --- [  restartedMain] trationDelegate$BeanPostProcessorChecker : Bean 'redisConfig' of type [com.neo.SpringBoot.config.RedisConfig$$EnhancerBySpringCGLIB$$27ffcaa7] is not eligible for getting processed by all BeanPostProcessors (for example: not eligible for auto-proxying)
2018-07-25 17:45:58.943  INFO 13244 --- [  restartedMain] trationDelegate$BeanPostProcessorChecker : Bean 'org.springframework.cache.annotation.ProxyCachingConfiguration' of type [org.springframework.cache.annotation.ProxyCachingConfiguration$$EnhancerBySpringCGLIB$$a4c14a63] is not eligible for getting processed by all BeanPostProcessors (for example: not eligible for auto-proxying)
2018-07-25 17:45:59.675  INFO 13244 --- [  restartedMain] o.s.b.w.embedded.tomcat.TomcatWebServer  : Tomcat initialized with port(s): 8080 (http)
2018-07-25 17:45:59.720  INFO 13244 --- [  restartedMain] o.apache.catalina.core.StandardService   : Starting service Tomcat
2018-07-25 17:45:59.720  INFO 13244 --- [  restartedMain] org.apache.catalina.core.StandardEngine  : Starting Servlet Engine: Apache Tomcat/8.5.12
2018-07-25 17:45:59.741  INFO 13244 --- [ost-startStop-1] o.a.catalina.core.AprLifecycleListener   : The APR based Apache Tomcat Native library which allows optimal performance in production environments was not found on the java.library.path: C:\Program Files\Java\jdk1.8.0_60\bin;C:\windows\Sun\Java\bin;C:\windows\system32;C:\windows;C:\ProgramData\Oracle\Java\javapath;F:\oracle\product\10.2.0\client_1;C:\Program Files\Java\jdk1.8.0_60\bin;C:\Program Files\Common Files\Microsoft Shared\Windows Live;C:\Program Files (x86)\Common Files\Microsoft Shared\Windows Live;C:\Program Files (x86)\Intel\iCLS Client\;C:\Program Files\Intel\iCLS Client\;C:\windows\system32;C:\windows;C:\windows\System32\Wbem;C:\windows\System32\WindowsPowerShell\v1.0\;C:\Program Files\Intel\Intel(R) Management Engine Components\DAL;C:\Program Files\Intel\Intel(R) Management Engine Components\IPT;C:\Program Files (x86)\Intel\Intel(R) Management Engine Components\DAL;C:\Program Files (x86)\Intel\Intel(R) Management Engine Components\IPT;C:\Program Files\Dell\Dell Data Protection\Access\Advanced\Wave\Gemalto\Access Client\v5\;C:\Program Files (x86)\Security Innovation\SI TSS\bin\;C:\Program Files (x86)\Windows Live\Shared;D:\cvsnt;C:\Program Files\TortoiseSVN\bin;D:\apache-maven-3.5.0-bin\bin;C:\Program Files\MySQL\MySQL Server 5.7\bin;D:\nodejs;D:\nodejs\;D:\nodejs\node_global\;F:\need software\jx_win64v8\;%CATALINA_HOME\bin%;D:\apache-ant-1.9.6\bin\;D:\gradle-3.4.1\bin;D:\Python27;D:\Python27\Scripts;C:\Users\nicoletang\AppData\Roaming\npm;.
2018-07-25 17:46:00.148  INFO 13244 --- [ost-startStop-1] org.apache.jasper.servlet.TldScanner     : At least one JAR was scanned for TLDs yet contained no TLDs. Enable debug logging for this logger for a complete list of JARs that were scanned but no TLDs were found in them. Skipping unneeded JARs during scanning can improve startup time and JSP compilation time.
2018-07-25 17:46:00.153  INFO 13244 --- [ost-startStop-1] o.a.c.c.C.[Tomcat].[localhost].[/]       : Initializing Spring embedded WebApplicationContext
2018-07-25 17:46:00.154  INFO 13244 --- [ost-startStop-1] o.s.web.context.ContextLoader            : Root WebApplicationContext: initialization completed in 3854 ms
2018-07-25 17:46:00.916  INFO 13244 --- [ost-startStop-1] o.s.b.w.servlet.FilterRegistrationBean   : Mapping filter: 'characterEncodingFilter' to: [/*]
2018-07-25 17:46:00.917  INFO 13244 --- [ost-startStop-1] o.s.b.w.servlet.FilterRegistrationBean   : Mapping filter: 'sessionRepositoryFilter' to: [/*]
2018-07-25 17:46:00.917  INFO 13244 --- [ost-startStop-1] o.s.b.w.servlet.FilterRegistrationBean   : Mapping filter: 'hiddenHttpMethodFilter' to: [/*]
2018-07-25 17:46:00.917  INFO 13244 --- [ost-startStop-1] o.s.b.w.servlet.FilterRegistrationBean   : Mapping filter: 'httpPutFormContentFilter' to: [/*]
2018-07-25 17:46:00.917  INFO 13244 --- [ost-startStop-1] o.s.b.w.servlet.FilterRegistrationBean   : Mapping filter: 'requestContextFilter' to: [/*]
2018-07-25 17:46:00.917  INFO 13244 --- [ost-startStop-1] o.s.b.w.servlet.FilterRegistrationBean   : Mapping filter: 'remoteIpFilter' to: [/*]
2018-07-25 17:46:00.918  INFO 13244 --- [ost-startStop-1] o.s.b.w.servlet.ServletRegistrationBean  : Servlet dispatcherServlet mapped to [/]
2018-07-25 17:46:01.174  INFO 13244 --- [  restartedMain] io.lettuce.core.EpollProvider            : Starting without optional epoll library
2018-07-25 17:46:01.177  INFO 13244 --- [  restartedMain] io.lettuce.core.KqueueProvider           : Starting without optional kqueue library
2018-07-25 17:46:01.521  WARN 13244 --- [  restartedMain] ConfigServletWebServerApplicationContext : Exception encountered during context initialization - cancelling refresh attempt: org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'enableRedisKeyspaceNotificationsInitializer' defined in class path resource [org/springframework/session/data/redis/config/annotation/web/http/RedisHttpSessionConfiguration.class]: Invocation of init method failed; nested exception is org.springframework.dao.QueryTimeoutException: Redis command timed out; nested exception is io.lettuce.core.RedisCommandTimeoutException: Command timed out
2018-07-25 17:46:02.642  INFO 13244 --- [  restartedMain] o.apache.catalina.core.StandardService   : Stopping service Tomcat
2018-07-25 17:46:02.699  INFO 13244 --- [  restartedMain] ConditionEvaluationReportLoggingListener : 

Error starting ApplicationContext. To display the conditions report re-run your application with 'debug' enabled.
2018-07-25 17:46:02.708 ERROR 13244 --- [  restartedMain] o.s.boot.SpringApplication               : Application run failed

org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'enableRedisKeyspaceNotificationsInitializer' defined in class path resource [org/springframework/session/data/redis/config/annotation/web/http/RedisHttpSessionConfiguration.class]: Invocation of init method failed; nested exception is org.springframework.dao.QueryTimeoutException: Redis command timed out; nested exception is io.lettuce.core.RedisCommandTimeoutException: Command timed out
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1710) ~[spring-beans-5.0.2.RELEASE.jar:5.0.2.RELEASE]
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:583) ~[spring-beans-5.0.2.RELEASE.jar:5.0.2.RELEASE]
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:502) ~[spring-beans-5.0.2.RELEASE.jar:5.0.2.RELEASE]
    at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:312) ~[spring-beans-5.0.2.RELEASE.jar:5.0.2.RELEASE]
    at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:228) ~[spring-beans-5.0.2.RELEASE.jar:5.0.2.RELEASE]
    at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:310) ~[spring-beans-5.0.2.RELEASE.jar:5.0.2.RELEASE]
    at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:200) ~[spring-beans-5.0.2.RELEASE.jar:5.0.2.RELEASE]
    at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:758) ~[spring-beans-5.0.2.RELEASE.jar:5.0.2.RELEASE]
    at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:868) ~[spring-context-5.0.2.RELEASE.jar:5.0.2.RELEASE]
    at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:549) ~[spring-context-5.0.2.RELEASE.jar:5.0.2.RELEASE]
    at org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext.refresh(ServletWebServerApplicationContext.java:140) ~[spring-boot-2.0.3.RELEASE.jar:2.0.3.RELEASE]
    at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:759) [spring-boot-2.0.3.RELEASE.jar:2.0.3.RELEASE]
    at org.springframework.boot.SpringApplication.refreshContext(SpringApplication.java:395) [spring-boot-2.0.3.RELEASE.jar:2.0.3.RELEASE]
    at org.springframework.boot.SpringApplication.run(SpringApplication.java:327) [spring-boot-2.0.3.RELEASE.jar:2.0.3.RELEASE]
    at org.springframework.boot.SpringApplication.run(SpringApplication.java:1255) [spring-boot-2.0.3.RELEASE.jar:2.0.3.RELEASE]
    at org.springframework.boot.SpringApplication.run(SpringApplication.java:1243) [spring-boot-2.0.3.RELEASE.jar:2.0.3.RELEASE]
    at com.neo.SpringBoot.Application.main(Application.java:11) [classes/:na]
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[na:1.8.0_60]
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) ~[na:1.8.0_60]
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[na:1.8.0_60]
    at java.lang.reflect.Method.invoke(Method.java:497) ~[na:1.8.0_60]
    at org.springframework.boot.devtools.restart.RestartLauncher.run(RestartLauncher.java:49) [spring-boot-devtools-2.0.3.RELEASE.jar:2.0.3.RELEASE]
Caused by: org.springframework.dao.QueryTimeoutException: Redis command timed out; nested exception is io.lettuce.core.RedisCommandTimeoutException: Command timed out
    at org.springframework.data.redis.connection.lettuce.LettuceExceptionConverter.convert(LettuceExceptionConverter.java:70) ~[spring-data-redis-2.0.3.RELEASE.jar:2.0.3.RELEASE]
    at org.springframework.data.redis.connection.lettuce.LettuceExceptionConverter.convert(LettuceExceptionConverter.java:41) ~[spring-data-redis-2.0.3.RELEASE.jar:2.0.3.RELEASE]
    at org.springframework.data.redis.PassThroughExceptionTranslationStrategy.translate(PassThroughExceptionTranslationStrategy.java:44) ~[spring-data-redis-2.0.3.RELEASE.jar:2.0.3.RELEASE]
    at org.springframework.data.redis.FallbackExceptionTranslationStrategy.translate(FallbackExceptionTranslationStrategy.java:42) ~[spring-data-redis-2.0.3.RELEASE.jar:2.0.3.RELEASE]
    at org.springframework.data.redis.connection.lettuce.LettuceConnection.convertLettuceAccessException(LettuceConnection.java:257) ~[spring-data-redis-2.0.3.RELEASE.jar:2.0.3.RELEASE]
    at org.springframework.data.redis.connection.lettuce.LettuceServerCommands.convertLettuceAccessException(LettuceServerCommands.java:571) ~[spring-data-redis-2.0.3.RELEASE.jar:2.0.3.RELEASE]
    at org.springframework.data.redis.connection.lettuce.LettuceServerCommands.getConfig(LettuceServerCommands.java:307) ~[spring-data-redis-2.0.3.RELEASE.jar:2.0.3.RELEASE]
    at org.springframework.data.redis.connection.DefaultedRedisConnection.getConfig(DefaultedRedisConnection.java:1119) ~[spring-data-redis-2.0.3.RELEASE.jar:2.0.3.RELEASE]
    at org.springframework.session.data.redis.config.ConfigureNotifyKeyspaceEventsAction.getNotifyOptions(ConfigureNotifyKeyspaceEventsAction.java:76) ~[spring-session-data-redis-2.0.3.RELEASE.jar:2.0.3.RELEASE]
    at org.springframework.session.data.redis.config.ConfigureNotifyKeyspaceEventsAction.configure(ConfigureNotifyKeyspaceEventsAction.java:57) ~[spring-session-data-redis-2.0.3.RELEASE.jar:2.0.3.RELEASE]
    at org.springframework.session.data.redis.config.annotation.web.http.RedisHttpSessionConfiguration$EnableRedisKeyspaceNotificationsInitializer.afterPropertiesSet(RedisHttpSessionConfiguration.java:286) ~[spring-session-data-redis-2.0.3.RELEASE.jar:2.0.3.RELEASE]
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.invokeInitMethods(AbstractAutowireCapableBeanFactory.java:1769) ~[spring-beans-5.0.2.RELEASE.jar:5.0.2.RELEASE]
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1706) ~[spring-beans-5.0.2.RELEASE.jar:5.0.2.RELEASE]
    ... 21 common frames omitted
Caused by: io.lettuce.core.RedisCommandTimeoutException: Command timed out
    at io.lettuce.core.LettuceFutures.awaitOrCancel(LettuceFutures.java:114) ~[lettuce-core-5.0.4.RELEASE.jar:na]
    at io.lettuce.core.FutureSyncInvocationHandler.handleInvocation(FutureSyncInvocationHandler.java:62) ~[lettuce-core-5.0.4.RELEASE.jar:na]
    at io.lettuce.core.internal.AbstractInvocationHandler.invoke(AbstractInvocationHandler.java:80) ~[lettuce-core-5.0.4.RELEASE.jar:na]
    at com.sun.proxy.$Proxy73.configGet(Unknown Source) ~[na:na]
    at org.springframework.data.redis.connection.lettuce.LettuceServerCommands.getConfig(LettuceServerCommands.java:305) ~[spring-data-redis-2.0.3.RELEASE.jar:2.0.3.RELEASE]
    ... 27 common frames omitted

spring-session中间件需要依赖redis2.8.0以上版本，并且需要开启： notify-keyspace-events gxE；如果spring-session使用的是redis集群环境，且redis集群环境没有开启 Keyspace notifications功能，则应用启动时会抛出以上异常。

官方文档中说Keyspace notifications功能默认是关闭的（默认地，Keyspace 时间通知功能是禁用的，因为它或多或少会使用一些CPU的资源），我们需要打开它。打开的方法也很简单，配置属性：notify-keyspace-events。

package com.neo.SpringBoot.config;

import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.session.data.redis.config.ConfigureRedisAction;

@Configuration
public class HttpSessionConfig {
    @Bean
    public static ConfigureRedisAction configureRedisAction() {
        return ConfigureRedisAction.NO_OP;
    }
}

再次运行Application类，出现io.lettuce.core.RedisCommandTimeoutException: Command timed out异常，异常信息：

17:55:48.189 [main] DEBUG org.springframework.boot.devtools.settings.DevToolsSettings - Included patterns for restart : []
17:55:48.193 [main] DEBUG org.springframework.boot.devtools.settings.DevToolsSettings - Excluded patterns for restart : [/spring-boot-actuator/target/classes/, /spring-boot-devtools/target/classes/, /spring-boot/target/classes/, /spring-boot-starter-[\w-]+/, /spring-boot-autoconfigure/target/classes/, /spring-boot-starter/target/classes/]
17:55:48.194 [main] DEBUG org.springframework.boot.devtools.restart.ChangeableUrls - Matching URLs for reloading : [file:/D:/workspace/SpringBoot/target/classes/]

  .   ____          _            __ _ _
 /\\ / ___'_ __ _ _(_)_ __  __ _ \ \ \ \
( ( )\___ | '_ | '_| | '_ \/ _` | \ \ \ \
 \\/  ___)| |_)| | | | | || (_| |  ) ) ) )
  '  |____| .__|_| |_|_| |_\__, | / / / /
 =========|_|==============|___/=/_/_/_/
 :: Spring Boot ::        (v2.0.3.RELEASE)

2018-07-25 17:55:48.818  INFO 12984 --- [  restartedMain] com.neo.SpringBoot.Application           : Starting Application on SZ10PD0703 with PID 12984 (D:\workspace\SpringBoot\target\classes started by nicoletang in D:\workspace\SpringBoot)
2018-07-25 17:55:48.822  INFO 12984 --- [  restartedMain] com.neo.SpringBoot.Application           : No active profile set, falling back to default profiles: default
2018-07-25 17:55:48.970  INFO 12984 --- [  restartedMain] ConfigServletWebServerApplicationContext : Refreshing org.springframework.boot.web.servlet.context.AnnotationConfigServletWebServerApplicationContext@47ba5d11: startup date [Wed Jul 25 17:55:48 CST 2018]; root of context hierarchy
2018-07-25 17:55:50.889  INFO 12984 --- [  restartedMain] .s.d.r.c.RepositoryConfigurationDelegate : Multiple Spring Data modules found, entering strict repository configuration mode!
2018-07-25 17:55:50.957  INFO 12984 --- [  restartedMain] .RepositoryConfigurationExtensionSupport : Spring Data Redis - Could not safely identify store assignment for repository candidate interface com.neo.SpringBoot.repository.UserRepository.
2018-07-25 17:55:51.757  INFO 12984 --- [  restartedMain] trationDelegate$BeanPostProcessorChecker : Bean 'redisConfig' of type [com.neo.SpringBoot.config.RedisConfig$$EnhancerBySpringCGLIB$$e24d3a7d] is not eligible for getting processed by all BeanPostProcessors (for example: not eligible for auto-proxying)
2018-07-25 17:55:51.766  INFO 12984 --- [  restartedMain] trationDelegate$BeanPostProcessorChecker : Bean 'org.springframework.cache.annotation.ProxyCachingConfiguration' of type [org.springframework.cache.annotation.ProxyCachingConfiguration$$EnhancerBySpringCGLIB$$5f0eba39] is not eligible for getting processed by all BeanPostProcessors (for example: not eligible for auto-proxying)
2018-07-25 17:55:52.561  INFO 12984 --- [  restartedMain] o.s.b.w.embedded.tomcat.TomcatWebServer  : Tomcat initialized with port(s): 8080 (http)
2018-07-25 17:55:52.603  INFO 12984 --- [  restartedMain] o.apache.catalina.core.StandardService   : Starting service Tomcat
2018-07-25 17:55:52.603  INFO 12984 --- [  restartedMain] org.apache.catalina.core.StandardEngine  : Starting Servlet Engine: Apache Tomcat/8.5.12
2018-07-25 17:55:52.626  INFO 12984 --- [ost-startStop-1] o.a.catalina.core.AprLifecycleListener   : The APR based Apache Tomcat Native library which allows optimal performance in production environments was not found on the java.library.path: C:\Program Files\Java\jdk1.8.0_60\bin;C:\windows\Sun\Java\bin;C:\windows\system32;C:\windows;C:\ProgramData\Oracle\Java\javapath;F:\oracle\product\10.2.0\client_1;C:\Program Files\Java\jdk1.8.0_60\bin;C:\Program Files\Common Files\Microsoft Shared\Windows Live;C:\Program Files (x86)\Common Files\Microsoft Shared\Windows Live;C:\Program Files (x86)\Intel\iCLS Client\;C:\Program Files\Intel\iCLS Client\;C:\windows\system32;C:\windows;C:\windows\System32\Wbem;C:\windows\System32\WindowsPowerShell\v1.0\;C:\Program Files\Intel\Intel(R) Management Engine Components\DAL;C:\Program Files\Intel\Intel(R) Management Engine Components\IPT;C:\Program Files (x86)\Intel\Intel(R) Management Engine Components\DAL;C:\Program Files (x86)\Intel\Intel(R) Management Engine Components\IPT;C:\Program Files\Dell\Dell Data Protection\Access\Advanced\Wave\Gemalto\Access Client\v5\;C:\Program Files (x86)\Security Innovation\SI TSS\bin\;C:\Program Files (x86)\Windows Live\Shared;D:\cvsnt;C:\Program Files\TortoiseSVN\bin;D:\apache-maven-3.5.0-bin\bin;C:\Program Files\MySQL\MySQL Server 5.7\bin;D:\nodejs;D:\nodejs\;D:\nodejs\node_global\;F:\need software\jx_win64v8\;%CATALINA_HOME\bin%;D:\apache-ant-1.9.6\bin\;D:\gradle-3.4.1\bin;D:\Python27;D:\Python27\Scripts;C:\Users\nicoletang\AppData\Roaming\npm;.
2018-07-25 17:55:53.068  INFO 12984 --- [ost-startStop-1] org.apache.jasper.servlet.TldScanner     : At least one JAR was scanned for TLDs yet contained no TLDs. Enable debug logging for this logger for a complete list of JARs that were scanned but no TLDs were found in them. Skipping unneeded JARs during scanning can improve startup time and JSP compilation time.
2018-07-25 17:55:53.073  INFO 12984 --- [ost-startStop-1] o.a.c.c.C.[Tomcat].[localhost].[/]       : Initializing Spring embedded WebApplicationContext
2018-07-25 17:55:53.073  INFO 12984 --- [ost-startStop-1] o.s.web.context.ContextLoader            : Root WebApplicationContext: initialization completed in 4106 ms
2018-07-25 17:55:54.019  INFO 12984 --- [ost-startStop-1] o.s.b.w.servlet.FilterRegistrationBean   : Mapping filter: 'characterEncodingFilter' to: [/*]
2018-07-25 17:55:54.020  INFO 12984 --- [ost-startStop-1] o.s.b.w.servlet.FilterRegistrationBean   : Mapping filter: 'sessionRepositoryFilter' to: [/*]
2018-07-25 17:55:54.020  INFO 12984 --- [ost-startStop-1] o.s.b.w.servlet.FilterRegistrationBean   : Mapping filter: 'hiddenHttpMethodFilter' to: [/*]
2018-07-25 17:55:54.020  INFO 12984 --- [ost-startStop-1] o.s.b.w.servlet.FilterRegistrationBean   : Mapping filter: 'httpPutFormContentFilter' to: [/*]
2018-07-25 17:55:54.020  INFO 12984 --- [ost-startStop-1] o.s.b.w.servlet.FilterRegistrationBean   : Mapping filter: 'requestContextFilter' to: [/*]
2018-07-25 17:55:54.021  INFO 12984 --- [ost-startStop-1] o.s.b.w.servlet.FilterRegistrationBean   : Mapping filter: 'remoteIpFilter' to: [/*]
2018-07-25 17:55:54.021  INFO 12984 --- [ost-startStop-1] o.s.b.w.servlet.ServletRegistrationBean  : Servlet dispatcherServlet mapped to [/]
2018-07-25 17:55:55.043  INFO 12984 --- [  restartedMain] o.s.w.s.handler.SimpleUrlHandlerMapping  : Mapped URL path [/**/favicon.ico] onto handler of type [class org.springframework.web.servlet.resource.ResourceHttpRequestHandler]
2018-07-25 17:55:55.246  INFO 12984 --- [  restartedMain] s.w.s.m.m.a.RequestMappingHandlerAdapter : Looking for @ControllerAdvice: org.springframework.boot.web.servlet.context.AnnotationConfigServletWebServerApplicationContext@47ba5d11: startup date [Wed Jul 25 17:55:48 CST 2018]; root of context hierarchy
2018-07-25 17:55:55.380  INFO 12984 --- [  restartedMain] s.w.s.m.m.a.RequestMappingHandlerMapping : Mapped "{[/hello]}" onto public java.lang.String com.neo.SpringBoot.controller.HelloWorldController.index()
2018-07-25 17:55:55.382  INFO 12984 --- [  restartedMain] s.w.s.m.m.a.RequestMappingHandlerMapping : Mapped "{[/getUser]}" onto public com.neo.SpringBoot.domain.User com.neo.SpringBoot.controller.HelloWorldController.getUser()
2018-07-25 17:55:55.390  INFO 12984 --- [  restartedMain] s.w.s.m.m.a.RequestMappingHandlerMapping : Mapped "{[/error]}" onto public org.springframework.http.ResponseEntity<java.util.Map<java.lang.String, java.lang.Object>> org.springframework.boot.autoconfigure.web.servlet.error.BasicErrorController.error(javax.servlet.http.HttpServletRequest)
2018-07-25 17:55:55.391  INFO 12984 --- [  restartedMain] s.w.s.m.m.a.RequestMappingHandlerMapping : Mapped "{[/error],produces=[text/html]}" onto public org.springframework.web.servlet.ModelAndView org.springframework.boot.autoconfigure.web.servlet.error.BasicErrorController.errorHtml(javax.servlet.http.HttpServletRequest,javax.servlet.http.HttpServletResponse)
2018-07-25 17:55:55.465  INFO 12984 --- [  restartedMain] o.s.w.s.handler.SimpleUrlHandlerMapping  : Mapped URL path [/webjars/**] onto handler of type [class org.springframework.web.servlet.resource.ResourceHttpRequestHandler]
2018-07-25 17:55:55.465  INFO 12984 --- [  restartedMain] o.s.w.s.handler.SimpleUrlHandlerMapping  : Mapped URL path [/**] onto handler of type [class org.springframework.web.servlet.resource.ResourceHttpRequestHandler]
2018-07-25 17:55:55.669  INFO 12984 --- [  restartedMain] o.s.b.d.a.OptionalLiveReloadServer       : LiveReload server is running on port 35729
2018-07-25 17:55:55.768  INFO 12984 --- [  restartedMain] o.s.j.e.a.AnnotationMBeanExporter        : Registering beans for JMX exposure on startup
2018-07-25 17:55:55.784  INFO 12984 --- [  restartedMain] o.s.c.support.DefaultLifecycleProcessor  : Starting beans in phase 2147483647
2018-07-25 17:55:55.931  INFO 12984 --- [enerContainer-1] io.lettuce.core.EpollProvider            : Starting without optional epoll library
2018-07-25 17:55:55.934  INFO 12984 --- [enerContainer-1] io.lettuce.core.KqueueProvider           : Starting without optional kqueue library
2018-07-25 17:55:56.501 ERROR 12984 --- [enerContainer-1] o.s.d.r.l.RedisMessageListenerContainer  : SubscriptionTask aborted with exception:

org.springframework.dao.QueryTimeoutException: Redis command timed out; nested exception is io.lettuce.core.RedisCommandTimeoutException: Command timed out
    at org.springframework.data.redis.connection.lettuce.LettuceExceptionConverter.convert(LettuceExceptionConverter.java:70) ~[spring-data-redis-2.0.3.RELEASE.jar:2.0.3.RELEASE]
    at org.springframework.data.redis.connection.lettuce.LettuceExceptionConverter.convert(LettuceExceptionConverter.java:41) ~[spring-data-redis-2.0.3.RELEASE.jar:2.0.3.RELEASE]
    at org.springframework.data.redis.PassThroughExceptionTranslationStrategy.translate(PassThroughExceptionTranslationStrategy.java:44) ~[spring-data-redis-2.0.3.RELEASE.jar:2.0.3.RELEASE]
    at org.springframework.data.redis.FallbackExceptionTranslationStrategy.translate(FallbackExceptionTranslationStrategy.java:42) ~[spring-data-redis-2.0.3.RELEASE.jar:2.0.3.RELEASE]
    at org.springframework.data.redis.connection.lettuce.LettuceConnection.convertLettuceAccessException(LettuceConnection.java:257) ~[spring-data-redis-2.0.3.RELEASE.jar:2.0.3.RELEASE]
    at org.springframework.data.redis.connection.lettuce.LettuceConnection.pSubscribe(LettuceConnection.java:747) ~[spring-data-redis-2.0.3.RELEASE.jar:2.0.3.RELEASE]
    at org.springframework.data.redis.listener.RedisMessageListenerContainer$SubscriptionTask.eventuallyPerformSubscription(RedisMessageListenerContainer.java:783) ~[spring-data-redis-2.0.3.RELEASE.jar:2.0.3.RELEASE]
    at org.springframework.data.redis.listener.RedisMessageListenerContainer$SubscriptionTask.run(RedisMessageListenerContainer.java:750) ~[spring-data-redis-2.0.3.RELEASE.jar:2.0.3.RELEASE]
    at java.lang.Thread.run(Thread.java:745) [na:1.8.0_60]
Caused by: io.lettuce.core.RedisCommandTimeoutException: Command timed out
    at io.lettuce.core.LettuceFutures.awaitOrCancel(LettuceFutures.java:114) ~[lettuce-core-5.0.4.RELEASE.jar:na]
    at io.lettuce.core.FutureSyncInvocationHandler.handleInvocation(FutureSyncInvocationHandler.java:62) ~[lettuce-core-5.0.4.RELEASE.jar:na]
    at io.lettuce.core.internal.AbstractInvocationHandler.invoke(AbstractInvocationHandler.java:80) ~[lettuce-core-5.0.4.RELEASE.jar:na]
    at com.sun.proxy.$Proxy81.psubscribe(Unknown Source) ~[na:na]
    at org.springframework.data.redis.connection.lettuce.LettuceSubscription.doPsubscribe(LettuceSubscription.java:54) ~[spring-data-redis-2.0.3.RELEASE.jar:2.0.3.RELEASE]
    at org.springframework.data.redis.connection.util.AbstractSubscription.pSubscribe(AbstractSubscription.java:130) ~[spring-data-redis-2.0.3.RELEASE.jar:2.0.3.RELEASE]
    at org.springframework.data.redis.connection.lettuce.LettuceConnection.pSubscribe(LettuceConnection.java:745) ~[spring-data-redis-2.0.3.RELEASE.jar:2.0.3.RELEASE]
    ... 3 common frames omitted

2018-07-25 17:56:00.809  INFO 12984 --- [  restartedMain] s.a.ScheduledAnnotationBeanPostProcessor : No TaskScheduler/ScheduledExecutorService bean found for scheduled processing
2018-07-25 17:56:00.977  INFO 12984 --- [  restartedMain] o.s.b.w.embedded.tomcat.TomcatWebServer  : Tomcat started on port(s): 8080 (http) with context path ''
2018-07-25 17:56:00.983  INFO 12984 --- [  restartedMain] com.neo.SpringBoot.Application           : Started Application in 12.771 seconds (JVM running for 13.631)
2018-07-25 17:57:00.054 ERROR 12984 --- [pool-1-thread-1] o.s.s.s.TaskUtils$LoggingErrorHandler    : Unexpected error occurred in scheduled task.

org.springframework.dao.QueryTimeoutException: Redis command timed out; nested exception is io.lettuce.core.RedisCommandTimeoutException: Command timed out
    at org.springframework.data.redis.connection.lettuce.LettuceExceptionConverter.convert(LettuceExceptionConverter.java:70) ~[spring-data-redis-2.0.3.RELEASE.jar:2.0.3.RELEASE]
    at org.springframework.data.redis.connection.lettuce.LettuceExceptionConverter.convert(LettuceExceptionConverter.java:41) ~[spring-data-redis-2.0.3.RELEASE.jar:2.0.3.RELEASE]
    at org.springframework.data.redis.PassThroughExceptionTranslationStrategy.translate(PassThroughExceptionTranslationStrategy.java:44) ~[spring-data-redis-2.0.3.RELEASE.jar:2.0.3.RELEASE]
    at org.springframework.data.redis.FallbackExceptionTranslationStrategy.translate(FallbackExceptionTranslationStrategy.java:42) ~[spring-data-redis-2.0.3.RELEASE.jar:2.0.3.RELEASE]
    at org.springframework.data.redis.connection.lettuce.LettuceConnection.convertLettuceAccessException(LettuceConnection.java:257) ~[spring-data-redis-2.0.3.RELEASE.jar:2.0.3.RELEASE]
    at org.springframework.data.redis.connection.lettuce.LettuceSetCommands.convertLettuceAccessException(LettuceSetCommands.java:520) ~[spring-data-redis-2.0.3.RELEASE.jar:2.0.3.RELEASE]
    at org.springframework.data.redis.connection.lettuce.LettuceSetCommands.sMembers(LettuceSetCommands.java:245) ~[spring-data-redis-2.0.3.RELEASE.jar:2.0.3.RELEASE]
    at org.springframework.data.redis.connection.DefaultedRedisConnection.sMembers(DefaultedRedisConnection.java:550) ~[spring-data-redis-2.0.3.RELEASE.jar:2.0.3.RELEASE]
    at org.springframework.data.redis.core.DefaultSetOperations.lambda$members$6(DefaultSetOperations.java:158) ~[spring-data-redis-2.0.3.RELEASE.jar:2.0.3.RELEASE]
    at org.springframework.data.redis.core.RedisTemplate.execute(RedisTemplate.java:224) ~[spring-data-redis-2.0.3.RELEASE.jar:2.0.3.RELEASE]
    at org.springframework.data.redis.core.RedisTemplate.execute(RedisTemplate.java:184) ~[spring-data-redis-2.0.3.RELEASE.jar:2.0.3.RELEASE]
    at org.springframework.data.redis.core.AbstractOperations.execute(AbstractOperations.java:95) ~[spring-data-redis-2.0.3.RELEASE.jar:2.0.3.RELEASE]
    at org.springframework.data.redis.core.DefaultSetOperations.members(DefaultSetOperations.java:158) ~[spring-data-redis-2.0.3.RELEASE.jar:2.0.3.RELEASE]
    at org.springframework.data.redis.core.DefaultBoundSetOperations.members(DefaultBoundSetOperations.java:152) ~[spring-data-redis-2.0.3.RELEASE.jar:2.0.3.RELEASE]
    at org.springframework.session.data.redis.RedisSessionExpirationPolicy.cleanExpiredSessions(RedisSessionExpirationPolicy.java:132) ~[spring-session-data-redis-2.0.3.RELEASE.jar:2.0.3.RELEASE]
    at org.springframework.session.data.redis.RedisOperationsSessionRepository.cleanupExpiredSessions(RedisOperationsSessionRepository.java:393) ~[spring-session-data-redis-2.0.3.RELEASE.jar:2.0.3.RELEASE]
    at org.springframework.session.data.redis.config.annotation.web.http.RedisHttpSessionConfiguration.lambda$configureTasks$0(RedisHttpSessionConfiguration.java:242) ~[spring-session-data-redis-2.0.3.RELEASE.jar:2.0.3.RELEASE]
    at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) ~[spring-context-5.0.2.RELEASE.jar:5.0.2.RELEASE]
    at org.springframework.scheduling.concurrent.ReschedulingRunnable.run(ReschedulingRunnable.java:93) [spring-context-5.0.2.RELEASE.jar:5.0.2.RELEASE]
    at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) [na:1.8.0_60]
    at java.util.concurrent.FutureTask.run(FutureTask.java:266) [na:1.8.0_60]
    at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$201(ScheduledThreadPoolExecutor.java:180) [na:1.8.0_60]
    at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:293) [na:1.8.0_60]
    at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142) [na:1.8.0_60]
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617) [na:1.8.0_60]
    at java.lang.Thread.run(Thread.java:745) [na:1.8.0_60]
Caused by: io.lettuce.core.RedisCommandTimeoutException: Command timed out
    at io.lettuce.core.LettuceFutures.awaitOrCancel(LettuceFutures.java:114) ~[lettuce-core-5.0.4.RELEASE.jar:na]
    at io.lettuce.core.FutureSyncInvocationHandler.handleInvocation(FutureSyncInvocationHandler.java:62) ~[lettuce-core-5.0.4.RELEASE.jar:na]
    at io.lettuce.core.internal.AbstractInvocationHandler.invoke(AbstractInvocationHandler.java:80) ~[lettuce-core-5.0.4.RELEASE.jar:na]
    at com.sun.proxy.$Proxy79.smembers(Unknown Source) ~[na:na]
    at org.springframework.data.redis.connection.lettuce.LettuceSetCommands.sMembers(LettuceSetCommands.java:243) ~[spring-data-redis-2.0.3.RELEASE.jar:2.0.3.RELEASE]
    ... 19 common frames omitted

再次排查，是application.properties的spring.redis.timeout为0，这里把超时时间配置大一些，再次运行Application类，启动成功，这次问题真的解决了，

spring.redis.timeout=100

18:00:08.030 [main] DEBUG org.springframework.boot.devtools.settings.DevToolsSettings - Included patterns for restart : []
18:00:08.034 [main] DEBUG org.springframework.boot.devtools.settings.DevToolsSettings - Excluded patterns for restart : [/spring-boot-actuator/target/classes/, /spring-boot-devtools/target/classes/, /spring-boot/target/classes/, /spring-boot-starter-[\w-]+/, /spring-boot-autoconfigure/target/classes/, /spring-boot-starter/target/classes/]
18:00:08.034 [main] DEBUG org.springframework.boot.devtools.restart.ChangeableUrls - Matching URLs for reloading : [file:/D:/workspace/SpringBoot/target/classes/]

  .   ____          _            __ _ _
 /\\ / ___'_ __ _ _(_)_ __  __ _ \ \ \ \
( ( )\___ | '_ | '_| | '_ \/ _` | \ \ \ \
 \\/  ___)| |_)| | | | | || (_| |  ) ) ) )
  '  |____| .__|_| |_|_| |_\__, | / / / /
 =========|_|==============|___/=/_/_/_/
 :: Spring Boot ::        (v2.0.3.RELEASE)

2018-07-25 18:00:08.529  INFO 10812 --- [  restartedMain] com.neo.SpringBoot.Application           : Starting Application on SZ10PD0703 with PID 10812 (D:\workspace\SpringBoot\target\classes started by nicoletang in D:\workspace\SpringBoot)
2018-07-25 18:00:08.531  INFO 10812 --- [  restartedMain] com.neo.SpringBoot.Application           : No active profile set, falling back to default profiles: default
2018-07-25 18:00:08.674  INFO 10812 --- [  restartedMain] ConfigServletWebServerApplicationContext : Refreshing org.springframework.boot.web.servlet.context.AnnotationConfigServletWebServerApplicationContext@6265fe6: startup date [Wed Jul 25 18:00:08 CST 2018]; root of context hierarchy
2018-07-25 18:00:10.319  INFO 10812 --- [  restartedMain] .s.d.r.c.RepositoryConfigurationDelegate : Multiple Spring Data modules found, entering strict repository configuration mode!
2018-07-25 18:00:10.387  INFO 10812 --- [  restartedMain] .RepositoryConfigurationExtensionSupport : Spring Data Redis - Could not safely identify store assignment for repository candidate interface com.neo.SpringBoot.repository.UserRepository.
2018-07-25 18:00:11.137  INFO 10812 --- [  restartedMain] trationDelegate$BeanPostProcessorChecker : Bean 'redisConfig' of type [com.neo.SpringBoot.config.RedisConfig$$EnhancerBySpringCGLIB$$441b6b12] is not eligible for getting processed by all BeanPostProcessors (for example: not eligible for auto-proxying)
2018-07-25 18:00:11.146  INFO 10812 --- [  restartedMain] trationDelegate$BeanPostProcessorChecker : Bean 'org.springframework.cache.annotation.ProxyCachingConfiguration' of type [org.springframework.cache.annotation.ProxyCachingConfiguration$$EnhancerBySpringCGLIB$$c0dceace] is not eligible for getting processed by all BeanPostProcessors (for example: not eligible for auto-proxying)
2018-07-25 18:00:12.026  INFO 10812 --- [  restartedMain] o.s.b.w.embedded.tomcat.TomcatWebServer  : Tomcat initialized with port(s): 8080 (http)
2018-07-25 18:00:12.070  INFO 10812 --- [  restartedMain] o.apache.catalina.core.StandardService   : Starting service Tomcat
2018-07-25 18:00:12.070  INFO 10812 --- [  restartedMain] org.apache.catalina.core.StandardEngine  : Starting Servlet Engine: Apache Tomcat/8.5.12
2018-07-25 18:00:12.093  INFO 10812 --- [ost-startStop-1] o.a.catalina.core.AprLifecycleListener   : The APR based Apache Tomcat Native library which allows optimal performance in production environments was not found on the java.library.path: C:\Program Files\Java\jdk1.8.0_60\bin;C:\windows\Sun\Java\bin;C:\windows\system32;C:\windows;C:\ProgramData\Oracle\Java\javapath;F:\oracle\product\10.2.0\client_1;C:\Program Files\Java\jdk1.8.0_60\bin;C:\Program Files\Common Files\Microsoft Shared\Windows Live;C:\Program Files (x86)\Common Files\Microsoft Shared\Windows Live;C:\Program Files (x86)\Intel\iCLS Client\;C:\Program Files\Intel\iCLS Client\;C:\windows\system32;C:\windows;C:\windows\System32\Wbem;C:\windows\System32\WindowsPowerShell\v1.0\;C:\Program Files\Intel\Intel(R) Management Engine Components\DAL;C:\Program Files\Intel\Intel(R) Management Engine Components\IPT;C:\Program Files (x86)\Intel\Intel(R) Management Engine Components\DAL;C:\Program Files (x86)\Intel\Intel(R) Management Engine Components\IPT;C:\Program Files\Dell\Dell Data Protection\Access\Advanced\Wave\Gemalto\Access Client\v5\;C:\Program Files (x86)\Security Innovation\SI TSS\bin\;C:\Program Files (x86)\Windows Live\Shared;D:\cvsnt;C:\Program Files\TortoiseSVN\bin;D:\apache-maven-3.5.0-bin\bin;C:\Program Files\MySQL\MySQL Server 5.7\bin;D:\nodejs;D:\nodejs\;D:\nodejs\node_global\;F:\need software\jx_win64v8\;%CATALINA_HOME\bin%;D:\apache-ant-1.9.6\bin\;D:\gradle-3.4.1\bin;D:\Python27;D:\Python27\Scripts;C:\Users\nicoletang\AppData\Roaming\npm;.
2018-07-25 18:00:12.518  INFO 10812 --- [ost-startStop-1] org.apache.jasper.servlet.TldScanner     : At least one JAR was scanned for TLDs yet contained no TLDs. Enable debug logging for this logger for a complete list of JARs that were scanned but no TLDs were found in them. Skipping unneeded JARs during scanning can improve startup time and JSP compilation time.
2018-07-25 18:00:12.524  INFO 10812 --- [ost-startStop-1] o.a.c.c.C.[Tomcat].[localhost].[/]       : Initializing Spring embedded WebApplicationContext
2018-07-25 18:00:12.524  INFO 10812 --- [ost-startStop-1] o.s.web.context.ContextLoader            : Root WebApplicationContext: initialization completed in 3854 ms
2018-07-25 18:00:13.180  INFO 10812 --- [ost-startStop-1] o.s.b.w.servlet.FilterRegistrationBean   : Mapping filter: 'characterEncodingFilter' to: [/*]
2018-07-25 18:00:13.180  INFO 10812 --- [ost-startStop-1] o.s.b.w.servlet.FilterRegistrationBean   : Mapping filter: 'sessionRepositoryFilter' to: [/*]
2018-07-25 18:00:13.180  INFO 10812 --- [ost-startStop-1] o.s.b.w.servlet.FilterRegistrationBean   : Mapping filter: 'hiddenHttpMethodFilter' to: [/*]
2018-07-25 18:00:13.180  INFO 10812 --- [ost-startStop-1] o.s.b.w.servlet.FilterRegistrationBean   : Mapping filter: 'httpPutFormContentFilter' to: [/*]
2018-07-25 18:00:13.180  INFO 10812 --- [ost-startStop-1] o.s.b.w.servlet.FilterRegistrationBean   : Mapping filter: 'requestContextFilter' to: [/*]
2018-07-25 18:00:13.181  INFO 10812 --- [ost-startStop-1] o.s.b.w.servlet.FilterRegistrationBean   : Mapping filter: 'remoteIpFilter' to: [/*]
2018-07-25 18:00:13.181  INFO 10812 --- [ost-startStop-1] o.s.b.w.servlet.ServletRegistrationBean  : Servlet dispatcherServlet mapped to [/]
2018-07-25 18:00:14.260  INFO 10812 --- [  restartedMain] o.s.w.s.handler.SimpleUrlHandlerMapping  : Mapped URL path [/**/favicon.ico] onto handler of type [class org.springframework.web.servlet.resource.ResourceHttpRequestHandler]
2018-07-25 18:00:14.432  INFO 10812 --- [  restartedMain] s.w.s.m.m.a.RequestMappingHandlerAdapter : Looking for @ControllerAdvice: org.springframework.boot.web.servlet.context.AnnotationConfigServletWebServerApplicationContext@6265fe6: startup date [Wed Jul 25 18:00:08 CST 2018]; root of context hierarchy
2018-07-25 18:00:14.550  INFO 10812 --- [  restartedMain] s.w.s.m.m.a.RequestMappingHandlerMapping : Mapped "{[/hello]}" onto public java.lang.String com.neo.SpringBoot.controller.HelloWorldController.index()
2018-07-25 18:00:14.551  INFO 10812 --- [  restartedMain] s.w.s.m.m.a.RequestMappingHandlerMapping : Mapped "{[/getUser]}" onto public com.neo.SpringBoot.domain.User com.neo.SpringBoot.controller.HelloWorldController.getUser()
2018-07-25 18:00:14.558  INFO 10812 --- [  restartedMain] s.w.s.m.m.a.RequestMappingHandlerMapping : Mapped "{[/error]}" onto public org.springframework.http.ResponseEntity<java.util.Map<java.lang.String, java.lang.Object>> org.springframework.boot.autoconfigure.web.servlet.error.BasicErrorController.error(javax.servlet.http.HttpServletRequest)
2018-07-25 18:00:14.559  INFO 10812 --- [  restartedMain] s.w.s.m.m.a.RequestMappingHandlerMapping : Mapped "{[/error],produces=[text/html]}" onto public org.springframework.web.servlet.ModelAndView org.springframework.boot.autoconfigure.web.servlet.error.BasicErrorController.errorHtml(javax.servlet.http.HttpServletRequest,javax.servlet.http.HttpServletResponse)
2018-07-25 18:00:14.621  INFO 10812 --- [  restartedMain] o.s.w.s.handler.SimpleUrlHandlerMapping  : Mapped URL path [/webjars/**] onto handler of type [class org.springframework.web.servlet.resource.ResourceHttpRequestHandler]
2018-07-25 18:00:14.622  INFO 10812 --- [  restartedMain] o.s.w.s.handler.SimpleUrlHandlerMapping  : Mapped URL path [/**] onto handler of type [class org.springframework.web.servlet.resource.ResourceHttpRequestHandler]
2018-07-25 18:00:14.801  INFO 10812 --- [  restartedMain] o.s.b.d.a.OptionalLiveReloadServer       : LiveReload server is running on port 35729
2018-07-25 18:00:14.895  INFO 10812 --- [  restartedMain] o.s.j.e.a.AnnotationMBeanExporter        : Registering beans for JMX exposure on startup
2018-07-25 18:00:14.908  INFO 10812 --- [  restartedMain] o.s.c.support.DefaultLifecycleProcessor  : Starting beans in phase 2147483647
2018-07-25 18:00:15.037  INFO 10812 --- [enerContainer-1] io.lettuce.core.EpollProvider            : Starting without optional epoll library
2018-07-25 18:00:15.039  INFO 10812 --- [enerContainer-1] io.lettuce.core.KqueueProvider           : Starting without optional kqueue library
2018-07-25 18:00:15.579  INFO 10812 --- [  restartedMain] s.a.ScheduledAnnotationBeanPostProcessor : No TaskScheduler/ScheduledExecutorService bean found for scheduled processing
2018-07-25 18:00:15.730  INFO 10812 --- [  restartedMain] o.s.b.w.embedded.tomcat.TomcatWebServer  : Tomcat started on port(s): 8080 (http) with context path ''
2018-07-25 18:00:15.737  INFO 10812 --- [  restartedMain] com.neo.SpringBoot.Application           : Started Application in 7.685 seconds (JVM running for 8.577)

启动用时7.685秒

2018-07-25 18:00:15.737  INFO 10812 --- [  restartedMain] com.neo.SpringBoot.Application           : Started Application in 7.685 seconds (JVM running for 8.577)

课后小知识：
pom.xml中配置的jar引用有一些没有下载完成。
下载所有的引用方法如下：
1、点击pom.xml，点击右键->Run as->Maven install
2、控制台执行下载

[INFO] Scanning for projects...
[WARNING] 
[WARNING] Some problems were encountered while building the effective model for com.neo:SpringBoot:jar:0.0.1-SNAPSHOT
[WARNING] 'build.plugins.plugin.(groupId:artifactId)' must be unique but found duplicate declaration of plugin org.springframework.boot:spring-boot-maven-plugin @ line 103, column 12
[WARNING] 
[WARNING] It is highly recommended to fix these problems because they threaten the stability of your build.
[WARNING] 
[WARNING] For this reason, future Maven versions might no longer support building such malformed projects.
[WARNING] 
[INFO]                                                                         
[INFO] ------------------------------------------------------------------------
[INFO] Building SpringBoot 0.0.1-SNAPSHOT
[INFO] ------------------------------------------------------------------------
[INFO] Downloading: http://maven.aliyun.com/nexus/content/groups/public/org/apache/maven/plugins/maven-install-plugin/2.5.2/maven-install-plugin-2.5.2.pom
[INFO] Downloaded: http://maven.aliyun.com/nexus/content/groups/public/org/apache/maven/plugins/maven-install-plugin/2.5.2/maven-install-plugin-2.5.2.pom (7 KB at 0.9 KB/sec)
[INFO] 
[INFO] --- maven-resources-plugin:3.0.1:resources (default-resources) @ SpringBoot ---
[INFO] Using 'UTF-8' encoding to copy filtered resources.
[INFO] Copying 1 resource
[INFO] Copying 0 resource
[INFO] 
[INFO] --- maven-compiler-plugin:3.7.0:compile (default-compile) @ SpringBoot ---
[INFO] Changes detected - recompiling the module!
[INFO] Compiling 9 source files to D:\workspace\SpringBoot\target\classes
[ERROR] error reading C:\Users\nicoletang\.m2\repository\io\projectreactor\reactor-core\3.1.8.RELEASE\reactor-core-3.1.8.RELEASE.jar; invalid LOC header (bad signature)
[INFO] 
[INFO] --- maven-resources-plugin:3.0.1:testResources (default-testResources) @ SpringBoot ---
[INFO] Using 'UTF-8' encoding to copy filtered resources.
[INFO] skip non existing resourceDirectory D:\workspace\SpringBoot\src\test\resources
[INFO] 
[INFO] --- maven-compiler-plugin:3.7.0:testCompile (default-testCompile) @ SpringBoot ---
[INFO] Changes detected - recompiling the module!
[INFO] Compiling 5 source files to D:\workspace\SpringBoot\target\test-classes
[ERROR] error reading C:\Users\nicoletang\.m2\repository\io\projectreactor\reactor-core\3.1.8.RELEASE\reactor-core-3.1.8.RELEASE.jar; invalid LOC header (bad signature)
[INFO] 
[INFO] --- maven-surefire-plugin:2.21.0:test (default-test) @ SpringBoot ---
[INFO] Downloading: http://maven.aliyun.com/nexus/content/groups/public/org/apache/maven/surefire/maven-surefire-common/2.21.0/maven-surefire-common-2.21.0.pom
[INFO] Downloaded: http://maven.aliyun.com/nexus/content/groups/public/org/apache/maven/surefire/maven-surefire-common/2.21.0/maven-surefire-common-2.21.0.pom (12 KB at 1.5 KB/sec)
[INFO] Downloading: http://maven.aliyun.com/nexus/content/groups/public/org/apache/maven/plugin-tools/maven-plugin-annotations/3.5/maven-plugin-annotations-3.5.pom
[INFO] Downloaded: http://maven.aliyun.com/nexus/content/groups/public/org/apache/maven/plugin-tools/maven-plugin-annotations/3.5/maven-plugin-annotations-3.5.pom (2 KB at 0.2 KB/sec)
[INFO] Downloading: http://maven.aliyun.com/nexus/content/groups/public/org/apache/maven/plugin-tools/maven-plugin-tools/3.5/maven-plugin-tools-3.5.pom
[INFO] Downloaded: http://maven.aliyun.com/nexus/content/groups/public/org/apache/maven/plugin-tools/maven-plugin-tools/3.5/maven-plugin-tools-3.5.pom (16 KB at 1.7 KB/sec)
[INFO] Downloading: http://maven.aliyun.com/nexus/content/groups/public/org/apache/maven/surefire/surefire-api/2.21.0/surefire-api-2.21.0.pom
[INFO] Downloaded: http://maven.aliyun.com/nexus/content/groups/public/org/apache/maven/surefire/surefire-api/2.21.0/surefire-api-2.21.0.pom (4 KB at 0.5 KB/sec)
[INFO] Downloading: http://maven.aliyun.com/nexus/content/groups/public/org/apache/maven/surefire/surefire-logger-api/2.21.0/surefire-logger-api-2.21.0.pom
[INFO] Downloaded: http://maven.aliyun.com/nexus/content/groups/public/org/apache/maven/surefire/surefire-logger-api/2.21.0/surefire-logger-api-2.21.0.pom (2 KB at 0.3 KB/sec)
[INFO] Downloading: http://maven.aliyun.com/nexus/content/groups/public/org/apache/maven/surefire/surefire-booter/2.21.0/surefire-booter-2.21.0.pom