springboot项目启动时报错:Failed to configure a DataSource: ‘url‘ attribute is not specified and no embedded

2020-08-02 10:33:27.322  WARN 9560 --- [  restartedMain] com.netflix.discovery.DiscoveryClient    : Using default backup registry implementation which does not do anything.
2020-08-02 10:33:27.322  INFO 9560 --- [  restartedMain] com.netflix.discovery.DiscoveryClient    : Not registering with Eureka server per configuration
2020-08-02 10:33:27.337  INFO 9560 --- [  restartedMain] com.netflix.discovery.DiscoveryClient    : Discovery Client initialized at timestamp 1596335607337 with initial instances count: 0
2020-08-02 10:33:27.523  WARN 9560 --- [  restartedMain] lientConfigServiceBootstrapConfiguration : Could not locate configserver via discovery

java.lang.IllegalStateException: No instances found of configserver (config-server-wj)
    at org.springframework.cloud.config.client.ConfigServerInstanceProvider.getConfigServerInstances(ConfigServerInstanceProvider.java:25)
    at org.springframework.cloud.config.client.DiscoveryClientConfigServiceBootstrapConfiguration.refresh(DiscoveryClientConfigServiceBootstrapConfiguration.java:84)
    at org.springframework.cloud.config.client.DiscoveryClientConfigServiceBootstrapConfiguration.startup(DiscoveryClientConfigServiceBootstrapConfiguration.java:69)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
    at java.lang.reflect.Method.invoke(Method.java:498)
    at org.springframework.context.event.ApplicationListenerMethodAdapter.doInvoke(ApplicationListenerMethodAdapter.java:262)
    at org.springframework.context.event.ApplicationListenerMethodAdapter.processEvent(ApplicationListenerMethodAdapter.java:180)
    at org.springframework.context.event.ApplicationListenerMethodAdapter.onApplicationEvent(ApplicationListenerMethodAdapter.java:142)
    at org.springframework.context.event.SimpleApplicationEventMulticaster.doInvokeListener(SimpleApplicationEventMulticaster.java:172)
    at org.springframework.context.event.SimpleApplicationEventMulticaster.invokeListener(SimpleApplicationEventMulticaster.java:165)
    at org.springframework.context.event.SimpleApplicationEventMulticaster.multicastEvent(SimpleApplicationEventMulticaster.java:139)
    at org.springframework.context.support.AbstractApplicationContext.publishEvent(AbstractApplicationContext.java:404)
    at org.springframework.context.support.AbstractApplicationContext.publishEvent(AbstractApplicationContext.java:358)
    at org.springframework.context.support.AbstractApplicationContext.finishRefresh(AbstractApplicationContext.java:900)
    at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:554)
    at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:754)
    at org.springframework.boot.SpringApplication.refreshContext(SpringApplication.java:386)
    at org.springframework.boot.SpringApplication.run(SpringApplication.java:307)
    at org.springframework.boot.builder.SpringApplicationBuilder.run(SpringApplicationBuilder.java:137)
    at org.springframework.cloud.bootstrap.BootstrapApplicationListener.bootstrapServiceContext(BootstrapApplicationListener.java:208)
    at org.springframework.cloud.bootstrap.BootstrapApplicationListener.onApplicationEvent(BootstrapApplicationListener.java:104)
    at org.springframework.cloud.bootstrap.BootstrapApplicationListener.onApplicationEvent(BootstrapApplicationListener.java:70)
    at org.springframework.context.event.SimpleApplicationEventMulticaster.doInvokeListener(SimpleApplicationEventMulticaster.java:172)
    at org.springframework.context.event.SimpleApplicationEventMulticaster.invokeListener(SimpleApplicationEventMulticaster.java:165)
    at org.springframework.context.event.SimpleApplicationEventMulticaster.multicastEvent(SimpleApplicationEventMulticaster.java:139)
    at org.springframework.context.event.SimpleApplicationEventMulticaster.multicastEvent(SimpleApplicationEventMulticaster.java:127)
    at org.springframework.boot.context.event.EventPublishingRunListener.environmentPrepared(EventPublishingRunListener.java:74)
    at org.springframework.boot.SpringApplicationRunListeners.environmentPrepared(SpringApplicationRunListeners.java:54)
    at org.springframework.boot.SpringApplication.prepareEnvironment(SpringApplication.java:338)
    at org.springframework.boot.SpringApplication.run(SpringApplication.java:297)
    at org.springframework.boot.SpringApplication.run(SpringApplication.java:1242)
    at org.springframework.boot.SpringApplication.run(SpringApplication.java:1230)
    at com.pc.bi.app.AuthApplication.main(AuthApplication.java:24)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
    at java.lang.reflect.Method.invoke(Method.java:498)
    at org.springframework.boot.devtools.restart.RestartLauncher.run(RestartLauncher.java:49)

  .   ____          _            __ _ _
 /\\ / ___'_ __ _ _(_)_ __  __ _ \ \ \ \
( ( )\___ | '_ | '_| | '_ \/ _` | \ \ \ \
 \\/  ___)| |_)| | | | | || (_| |  ) ) ) )
  '  |____| .__|_| |_|_| |_\__, | / / / /
 =========|_|==============|___/=/_/_/_/
 :: Spring Boot ::        (v2.0.9.RELEASE)

2020-08-02 10:33:28.140  INFO 9560 --- [  restartedMain] c.c.c.ConfigServicePropertySourceLocator : Fetching config from server at : http://localhost:8888
2020-08-02 10:33:30.325  INFO 9560 --- [  restartedMain] c.c.c.ConfigServicePropertySourceLocator : Connect Timeout Exception on Url - http://localhost:8888. Will be trying the next url if available
2020-08-02 10:33:30.326  WARN 9560 --- [  restartedMain] c.c.c.ConfigServicePropertySourceLocator : Could not locate PropertySource: I/O error on GET request for "http://localhost:8888/auth-service-wj/dev": Connection refused: connect; nested exception is java.net.ConnectException: Connection refused: connect
2020-08-02 10:33:30.328  INFO 9560 --- [  restartedMain] com.pc.bi.app.AuthApplication       : No active profile set, falling back to default profiles: default
2020-08-02 10:33:30.359  INFO 9560 --- [  restartedMain] ConfigServletWebServerApplicationContext : Refreshing org.springframework.boot.web.servlet.context.AnnotationConfigServletWebServerApplicationContext@2246ff7a: startup date [Sun Aug 02 10:33:30 CST 2020]; parent: org.springframework.context.annotation.AnnotationConfigApplicationContext@242d2cfe
2020-08-02 10:33:32.075  INFO 9560 --- [  restartedMain] o.s.b.f.s.DefaultListableBeanFactory     : Overriding bean definition for bean 'dataSource' with a different definition: replacing [Root bean: class [org.springframework.aop.scope.ScopedProxyFactoryBean]; scope=; abstract=false; lazyInit=false; autowireMode=0; dependencyCheck=0; autowireCandidate=true; primary=false; factoryBeanName=null; factoryMethodName=null; initMethodName=null; destroyMethodName=null; defined in BeanDefinition defined in class path resource [com/pc/bi/app/config/DataSourceConfigure.class]] with [Root bean: class [null]; scope=; abstract=false; lazyInit=false; autowireMode=3; dependencyCheck=0; autowireCandidate=true; primary=false; factoryBeanName=com.alibaba.druid.spring.boot.autoconfigure.DruidDataSourceAutoConfigure; factoryMethodName=dataSource; initMethodName=init; destroyMethodName=(inferred); defined in class path resource [com/alibaba/druid/spring/boot/autoconfigure/DruidDataSourceAutoConfigure.class]]
2020-08-02 10:33:32.518  INFO 9560 --- [  restartedMain] .s.d.r.c.RepositoryConfigurationDelegate : Multiple Spring Data modules found, entering strict repository configuration mode!
2020-08-02 10:33:33.325  INFO 9560 --- [  restartedMain] o.s.cloud.context.scope.GenericScope     : BeanFactory id=084bca86-d6f2-3116-b4e7-89854ee9ea10
2020-08-02 10:33:33.355  INFO 9560 --- [  restartedMain] f.a.AutowiredAnnotationBeanPostProcessor : JSR-330 'javax.inject.Inject' annotation found and supported for autowiring
2020-08-02 10:33:33.598  INFO 9560 --- [  restartedMain] trationDelegate$BeanPostProcessorChecker : Bean 'org.springframework.transaction.annotation.ProxyTransactionManagementConfiguration' of type [org.springframework.transaction.annotation.ProxyTransactionManagementConfiguration$$EnhancerBySpringCGLIB$$319bbd6b] is not eligible for getting processed by all BeanPostProcessors (for example: not eligible for auto-proxying)
2020-08-02 10:33:33.678  INFO 9560 --- [  restartedMain] trationDelegate$BeanPostProcessorChecker : Bean 'org.springframework.cloud.autoconfigure.ConfigurationPropertiesRebinderAutoConfiguration' of type [org.springframework.cloud.autoconfigure.ConfigurationPropertiesRebinderAutoConfiguration$$EnhancerBySpringCGLIB$$4db5c068] is not eligible for getting processed by all BeanPostProcessors (for example: not eligible for auto-proxying)
2020-08-02 10:33:34.593  INFO 9560 --- [  restartedMain] o.s.b.w.embedded.tomcat.TomcatWebServer  : Tomcat initialized with port(s): 9096 (http)
2020-08-02 10:33:34.634  INFO 9560 --- [  restartedMain] o.apache.catalina.core.StandardService   : Starting service [Tomcat]
2020-08-02 10:33:34.634  INFO 9560 --- [  restartedMain] org.apache.catalina.core.StandardEngine  : Starting Servlet Engine: Apache Tomcat/8.5.39
2020-08-02 10:33:34.650  INFO 9560 --- [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_101\bin;C:\WINDOWS\Sun\Java\bin;C:\WINDOWS\system32;C:\WINDOWS;C:/Program Files/Java/jre1.8.0_101/bin/server;C:/Program Files/Java/jre1.8.0_101/bin;C:/Program Files/Java/jre1.8.0_101/lib/amd64;C:\ProgramData\Oracle\Java\javapath;D:\app\pc\product\11.2.0\dbhome_1\bin;C:\WINDOWS\system32;C:\WINDOWS;C:\WINDOWS\System32\Wbem;C:\WINDOWS\System32\WindowsPowerShell\v1.0\;C:\WINDOWS\System32\OpenSSH\;C:\Program Files\Git\cmd;C:\Program Files\mysql-5.6.16-winx64\bin;C:\Program Files\nodejs\;C:\Program Files\TortoiseGit\bin;C:\Program Files\Java\jdk1.8.0_101\bin;D:\soft\gradle-6.1.1\bin;D:\soft\apache-maven-3.6.3\bin;C:\Program Files\Redis;C:\Program Files\PuTTY\;C:\Program Files\VisualSVN Server\bin;C:\Program Files\TortoiseSVN\bin;C:\Users\pc\AppData\Local\Microsoft\WindowsApps;C:\Users\pc\AppData\Roaming\npm;C:\Users\pc\AppData\Local\BypassRuntm;C:\Users\pc\AppData\Local\Programs\Microsoft VS Code\bin;C:\Program Files\Bandizip\;D:\soft\spring-tool-suite-3.8.2.RELEASE-e4.6.1-win32-x86_64\sts-bundle\sts-3.8.2.RELEASE;;.]
2020-08-02 10:33:35.050  INFO 9560 --- [ost-startStop-1] o.a.c.c.C.[Tomcat].[localhost].[/]       : Initializing Spring embedded WebApplicationContext
2020-08-02 10:33:35.050  INFO 9560 --- [ost-startStop-1] o.s.web.context.ContextLoader            : Root WebApplicationContext: initialization completed in 4691 ms
2020-08-02 10:33:35.549  WARN 9560 --- [ost-startStop-1] c.n.c.sources.URLConfigurationSource     : No URLs will be polled as dynamic configuration sources.
2020-08-02 10:33:35.549  INFO 9560 --- [ost-startStop-1] c.n.c.sources.URLConfigurationSource     : To enable URLs as dynamic configuration sources, define System property archaius.configurationSource.additionalUrls or make config.properties available on classpath.
2020-08-02 10:33:35.579  INFO 9560 --- [ost-startStop-1] c.netflix.config.DynamicPropertyFactory  : DynamicPropertyFactory is initialized with configuration sources: com.netflix.config.ConcurrentCompositeConfiguration@1d51fb00
2020-08-02 10:33:36.557  INFO 9560 --- [ost-startStop-1] c.a.d.s.b.a.DruidDataSourceAutoConfigure : Init DruidDataSource
2020-08-02 10:33:36.799 ERROR 9560 --- [ost-startStop-1] o.s.b.web.embedded.tomcat.TomcatStarter  : Error starting Tomcat context. Exception: org.springframework.beans.factory.BeanCreationException. Message: Error creating bean with name 'servletEndpointRegistrar' defined in class path resource [org/springframework/boot/actuate/autoconfigure/endpoint/web/ServletEndpointManagementContextConfiguration$WebMvcServletEndpointManagementContextConfiguration.class]: Bean instantiation via factory method failed; nested exception is org.springframework.beans.BeanInstantiationException: Failed to instantiate [org.springframework.boot.actuate.endpoint.web.ServletEndpointRegistrar]: Factory method 'servletEndpointRegistrar' threw exception; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'healthEndpoint' defined in class path resource [org/springframework/boot/actuate/autoconfigure/health/HealthEndpointConfiguration.class]: Bean instantiation via factory method failed; nested exception is org.springframework.beans.BeanInstantiationException: Failed to instantiate [org.springframework.boot.actuate.health.HealthEndpoint]: Factory method 'healthEndpoint' threw exception; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'org.springframework.boot.actuate.autoconfigure.jdbc.DataSourceHealthIndicatorAutoConfiguration': Bean instantiation via constructor failed; nested exception is org.springframework.beans.BeanInstantiationException: Failed to instantiate [org.springframework.boot.actuate.autoconfigure.jdbc.DataSourceHealthIndicatorAutoConfiguration$$EnhancerBySpringCGLIB$$a0800ef1]: Constructor threw exception; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'dataSource' defined in class path resource [com/alibaba/druid/spring/boot/autoconfigure/DruidDataSourceAutoConfigure.class]: Invocation of init method failed; nested exception is org.springframework.boot.autoconfigure.jdbc.DataSourceProperties$DataSourceBeanCreationException: Failed to determine a suitable driver class
2020-08-02 10:33:36.859  INFO 9560 --- [  restartedMain] o.apache.catalina.core.StandardService   : Stopping service [Tomcat]
2020-08-02 10:33:37.324  WARN 9560 --- [ost-startStop-1] o.a.c.loader.WebappClassLoaderBase       : The web application [ROOT] appears to have started a thread named [lettuce-eventExecutorLoop-1-1] but has failed to stop it. This is very likely to create a memory leak. Stack trace of thread:
 sun.misc.Unsafe.park(Native Method)
 java.util.concurrent.locks.LockSupport.parkNanos(LockSupport.java:215)
 java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject.awaitNanos(AbstractQueuedSynchronizer.java:2078)
 java.util.concurrent.LinkedBlockingQueue.poll(LinkedBlockingQueue.java:467)
 io.netty.util.concurrent.SingleThreadEventExecutor.takeTask(SingleThreadEventExecutor.java:251)
 io.netty.util.concurrent.DefaultEventExecutor.run(DefaultEventExecutor.java:64)
 io.netty.util.concurrent.SingleThreadEventExecutor$5.run(SingleThreadEventExecutor.java:905)
 io.netty.util.concurrent.FastThreadLocalRunnable.run(FastThreadLocalRunnable.java:30)
 java.lang.Thread.run(Thread.java:745)
2020-08-02 10:33:37.334  WARN 9560 --- [  restartedMain] ConfigServletWebServerApplicationContext : Exception encountered during context initialization - cancelling refresh attempt: org.springframework.context.ApplicationContextException: Unable to start web server; nested exception is org.springframework.boot.web.server.WebServerException: Unable to start embedded Tomcat
2020-08-02 10:33:37.384  INFO 9560 --- [  restartedMain] ConditionEvaluationReportLoggingListener :

Error starting ApplicationContext. To display the conditions report re-run your application with 'debug' enabled.
2020-08-02 10:33:37.394 ERROR 9560 --- [  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).

原因请参考：springcloud中eureka,zuul,configserver通信