org.hibernate.cache.NoCachingEnabledException: Second-level cache is not enabled for usage

最新推荐文章于 2024-04-02 09:58:25 发布
最新推荐文章于 2024-04-02 09:58:25 发布
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分类专栏： hibernate 文章标签： hibernate 缓存
本文解决Hibernate4.0环境下配置二级缓存的问题，包括对比Hibernate3.3的配置差异，并提供详细的配置步骤及注意事项。

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hibernate4.0 错误：

org.hibernate.cache.NoCachingEnabledException: Second-level cache is not enabled for usage [hibernate.cache.use_second_level_cache | hibernate.cache.use_query_cache]
    at org.hibernate.cache.internal.NoCachingRegionFactory.buildEntityRegion(NoCachingRegionFactory.java:68)
    at org.hibernate.internal.SessionFactoryImpl.<init>(SessionFactoryImpl.java:339)
    at org.hibernate.cfg.Configuration.buildSessionFactory(Configuration.java:1737)
    at com.hibernate.model.StudentTest.beforeClass(StudentTest.java:30)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
    at java.lang.reflect.Method.invoke(Method.java:597)
    at org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:44)
    at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:15)
    at org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:41)
    at org.junit.internal.runners.statements.RunBefores.evaluate(RunBefores.java:27)
    at org.junit.internal.runners.statements.RunAfters.evaluate(RunAfters.java:31)
    at org.junit.runners.ParentRunner.run(ParentRunner.java:236)
    at org.eclipse.jdt.internal.junit4.runner.JUnit4TestReference.run(JUnit4TestReference.java:50)
    at org.eclipse.jdt.internal.junit.runner.TestExecution.run(TestExecution.java:38)
    at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:467)
    at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:683)
    at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.run(RemoteTestRunner.java:390)
    at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.main(RemoteTestRunner.java:197)

java.lang.NullPointerException
    at com.hibernate.model.StudentTest.afterClass(StudentTest.java:90)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
    at java.lang.reflect.Method.invoke(Method.java:597)
    at org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:44)
    at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:15)
    at org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:41)
    at org.junit.internal.runners.statements.RunAfters.evaluate(RunAfters.java:37)
    at org.junit.runners.ParentRunner.run(ParentRunner.java:236)
    at org.eclipse.jdt.internal.junit4.runner.JUnit4TestReference.run(JUnit4TestReference.java:50)
    at org.eclipse.jdt.internal.junit.runner.TestExecution.run(TestExecution.java:38)
    at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:467)
    at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:683)
    at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.run(RemoteTestRunner.java:390)
    at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.main(RemoteTestRunner.java:197)


我解决问题的方法：

在网上查了资料，了解hibernate4.0在hibernate.cfg.xml配置二级缓存和hibernate3.3有所不同,这里的测试用load测试，用query的话就要配置查询缓存喽

4.0配置如下：

<property name="hibernate.cache.use_second_level_cache">true</property>
<property name="hibernate.cache.region.factory_class">org.hibernate.cache.ehcache.EhCacheRegionFactory</property>

3.3配置如下：

<property name="hibernate.cache.use_second_level_cache">true</property>

<property name="cache.provider_class">org.hibernate.cache.EhCacheProvider</property>


完整的二级缓存配置：配置之前先拷贝一个ehcache.xml文件到src文件下

 

  1. hibernate.cfg.xml 设定：<property name="hibernate.cache.use_second_level_cache">true</property>
    <property name="hibernate.cache.region.factory_class">org.hibernate.cache.ehcache.EhCacheRegionFactory</property>
  2. @Cache注解(由hibernate扩展提供)    @Cache(usage=CacheConcurrencyStrategy.READ_WRITE)
  3. 用load测试（二级缓存是SessionFactory级别的缓存）
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NoCachingEnabledException: Second-level cache is not enabled for usage
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work\boot\spring-boot-starter-json\3.4.7\spring-boot-starter-json-3.4.7.jar;C:\Users\Administrator\.m2\repository\com\fasterxml\jackson\core\jackson-databind\2.18.4\jackson-databind-2.18.4.jar;C:\Users\Administrator\.m2\repository\com\fasterxml\jackson\core\jackson-annotations\2.18.4\jackson-annotations-2.18.4.jar;C:\Users\Administrator\.m2\repository\com\fasterxml\jackson\core\jackson-core\2.18.4.1\jackson-core-2.18.4.1.jar;C:\Users\Administrator\.m2\repository\com\fasterxml\jackson\datatype\jackson-datatype-jdk8\2.18.4\jackson-datatype-jdk8-2.18.4.jar;C:\Users\Administrator\.m2\repository\com\fasterxml\jackson\datatype\jackson-datatype-jsr310\2.18.4\jackson-datatype-jsr310-2.18.4.jar;C:\Users\Administrator\.m2\repository\com\fasterxml\jackson\module\jackson-module-parameter-names\2.18.4\jackson-module-parameter-names-2.18.4.jar;C:\Users\Administrator\.m2\repository\org\springframework\boot\spring-boot-starter-tomcat\3.4.7\spring-boot-starter-tomcat-3.4.7.jar;C:\Users\Administrator\.m2\repository\org\apache\tomcat\embed\tomcat-embed-core\10.1.42\tomcat-embed-core-10.1.42.jar;C:\Users\Administrator\.m2\repository\org\apache\tomcat\embed\tomcat-embed-el\10.1.42\tomcat-embed-el-10.1.42.jar;C:\Users\Administrator\.m2\repository\org\apache\tomcat\embed\tomcat-embed-websocket\10.1.42\tomcat-embed-websocket-10.1.42.jar;C:\Users\Administrator\.m2\repository\org\springframework\spring-web\6.2.8\spring-web-6.2.8.jar;C:\Users\Administrator\.m2\repository\org\springframework\spring-webmvc\6.2.8\spring-webmvc-6.2.8.jar;C:\Users\Administrator\.m2\repository\org\springframework\spring-expression\6.2.8\spring-expression-6.2.8.jar;C:\Users\Administrator\.m2\repository\com\mysql\mysql-connector-j\9.1.0\mysql-connector-j-9.1.0.jar;C:\Users\Administrator\.m2\repository\jakarta\xml\bind\jakarta.xml.bind-api\4.0.2\jakarta.xml.bind-api-4.0.2.jar;C:\Users\Administrator\.m2\repository\jakarta\activation\jakarta.activation-api\2.1.3\jakarta.activation-api-2.1.3.jar;C:\Users\Administrator\.m2\repository\org\springframework\spring-core\6.2.8\spring-core-6.2.8.jar;C:\Users\Administrator\.m2\repository\org\springframework\spring-jcl\6.2.8\spring-jcl-6.2.8.jar;C:\Users\Administrator\.m2\repository\org\springframework\boot\spring-boot-starter-actuator\3.4.7\spring-boot-starter-actuator-3.4.7.jar;C:\Users\Administrator\.m2\repository\org\springframework\boot\spring-boot-actuator-autoconfigure\3.4.7\spring-boot-actuator-autoconfigure-3.4.7.jar;C:\Users\Administrator\.m2\repository\org\springframework\boot\spring-boot-actuator\3.4.7\spring-boot-actuator-3.4.7.jar;C:\Users\Administrator\.m2\repository\io\micrometer\micrometer-observation\1.14.8\micrometer-observation-1.14.8.jar;C:\Users\Administrator\.m2\repository\io\micrometer\micrometer-commons\1.14.8\micrometer-commons-1.14.8.jar;C:\Users\Administrator\.m2\repository\io\micrometer\micrometer-jakarta9\1.14.8\micrometer-jakarta9-1.14.8.jar;C:\Users\Administrator\.m2\repository\io\micrometer\micrometer-core\1.14.8\micrometer-core-1.14.8.jar;C:\Users\Administrator\.m2\repository\org\hdrhistogram\HdrHistogram\2.2.2\HdrHistogram-2.2.2.jar;C:\Users\Administrator\.m2\repository\org\latencyutils\LatencyUtils\2.0.3\LatencyUtils-2.0.3.jar com.example.demo.DemoApplication . ____ _ __ _ _ /\\ / ___'_ __ _ _(_)_ __ __ _ \ \ \ \ ( ( )\___ | '_ | '_| | '_ \/ _` | \ \ \ \ \\/ ___)| |_)| | | | | || (_| | ) ) ) ) ' |____| .__|_| |_|_| |_\__, | / / / / =========|_|==============|___/=/_/_/_/ :: Spring Boot :: (v3.4.7) 2025-06-27T10:30:14.443+08:00 INFO 9072 --- [demo] [ main] com.example.demo.DemoApplication : Starting DemoApplication using Java 17.0.1 with PID 9072 (D:\demo\target\classes started by Administrator in D:\demo) 2025-06-27T10:30:14.450+08:00 INFO 9072 --- [demo] [ main] com.example.demo.DemoApplication : No active profile set, falling back to 1 default profile: "default" 2025-06-27T10:30:15.740+08:00 INFO 9072 --- [demo] [ main] .s.d.r.c.RepositoryConfigurationDelegate : Bootstrapping Spring Data JPA repositories in DEFAULT mode. 2025-06-27T10:30:15.807+08:00 INFO 9072 --- [demo] [ main] .s.d.r.c.RepositoryConfigurationDelegate : Finished Spring Data repository scanning in 52 ms. 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Therefore, database queries may be performed during view rendering. Explicitly configure spring.jpa.open-in-view to disable this warning 2025-06-27T10:30:19.324+08:00 INFO 9072 --- [demo] [ main] o.s.b.a.e.web.EndpointLinksResolver : Exposing 1 endpoint beneath base path '/actuator' 2025-06-27T10:30:19.464+08:00 INFO 9072 --- [demo] [ main] o.s.b.w.embedded.tomcat.TomcatWebServer : Tomcat started on port 8080 (http) with context path '/' 2025-06-27T10:30:19.492+08:00 INFO 9072 --- [demo] [ main] com.example.demo.DemoApplication : Started DemoApplication in 5.68 seconds (process running for 6.546) 2025-06-27T10:30:19.973+08:00 INFO 9072 --- [demo] [)-10.128.10.155] o.a.c.c.C.[Tomcat].[localhost].[/] : Initializing Spring DispatcherServlet 'dispatcherServlet' 2025-06-27T10:30:19.974+08:00 INFO 9072 --- [demo] [)-10.128.10.155] o.s.web.servlet.DispatcherServlet : Initializing Servlet 'dispatcherServlet' 2025-06-27T10:30:19.977+08:00 INFO 9072 --- [demo] [)-10.128.10.155] o.s.web.servlet.DispatcherServlet : Completed initialization in 3 ms
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如果用户希望看到SQL日志，我们可以在application.properties中配置：spring.jpa.show-sql=truespring.jpa.properties.hibernate.format_sql=truelogging.level.org.hibernate.SQL=DEBUGlogging.level.org.hibernate...
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session能够在某些时间点，按照缓存中对象的变化来执行相关的SQL语句，来同步更新数据库，这一过程称为刷新缓存(flush)。一般情况下，游离对象是由持久化对象转变过来的(session进行close、clear、evict等情况)，数据库中可能还存在它对应的记录，但是因为会话已经消失，对象不在持久化管理之内，所以处于游离状态。session实例没有结束生命周期，且没有清理缓存，则存放在session缓存中的对象也不会结束生命周期，session缓存可以减少访问数据库的频率。
【Hibernate二级缓存】：性能优化第三阶的深度优化技术
为了优化数据访问效率，许多持久化框架提供了缓存机制，其中Hibernate的二级缓存是提高数据库访问性能的重要工具。 ## 1.2 Hibernate二级缓存的作用 Hibernate二级缓存位于SessionFactory级别，可以为
org.hibernate.cache.NoCachingEnabledException
idream java
08-22 181
 org.hibernate.cache.NoCachingEnabledException: Second-level cache is not enabled for usage [hibernate.cache.use_second_level_cache | hibernate.cache.use_query_cache]   出现这个异常的原因是没有开启二级缓存与查询缓存。   ...
Second-level cache is not enabled for usage 异常
lang_niu的专栏
06-01 717
今天在使用Hibernate时，出现了Could not instantiate cache implementation的错误，我是在使用Hibernate tools时报的错误，应该运行时也会出现这样的错误，异常堆栈： org.hibernate.HibernateException: Could not instantiate cache implementation at org.
异常：org.hibernate.cache.NoCachingEnabledException: Second-level cache is not enabled for usage [hiber
十年树木的博客
11-12 1585
异常：org.hibernate.cache.NoCachingEnabledException: Second-level cache is not enabled for usage [hibernate.cache.use_second_level_cache | hibernate.cache.use_query_cache] 最后发现问题就是在这里，因为在Hibernate的bean的
jbpm二级缓存异常解决
nigat的博客
12-20 130
异常：org.hibernate.cache.NoCachingEnabledException: Second-level cache is not enabled for usage [hibernate.cache.use_second_level_cache | hibernate.cache.use_query_cache] 大概意思是二级缓存不可用，但是项目在开发阶段不需要启...
hibernate -----Could not instantiate cache implementation异常处理
sun_zhicheng的专栏
03-06 5749
 今天在使用Hibernate时，出现了Could not instantiate cache implementation的错误，我是在使用Hibernate tools时报的错误，应该运行时也会出现这样的错误，异常堆栈：org.hibernate.HibernateException: Could not instantiate cache implementationat org
提示报错org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'entityManagerFactory' defined in class path resource [org/springframework/boot/autoconfigure/orm/jpa/HibernateJpaConfiguration.class]: Invocation of init method failed; nested exception is org.hibernate.service.spi.ServiceException: Unable to create requested service [org.hibernate.cache.spi.RegionFactory] at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1804) ~[spring-beans-5.3.31.jar:5.3.31] at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:620) ~[spring-beans-5.3.31.jar:5.3.31] at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:542) ~[spring-beans-5.3.31.jar:5.3.31] at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:335) ~[spring-beans-5.3.31.jar:5.3.31] at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:234) ~[spring-beans-5.3.31.jar:5.3.31] at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:333) ~[spring-beans-5.3.31.jar:5.3.31] at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:208) ~[spring-beans-5.3.31.jar:5.3.31] at org.springframework.context.support.AbstractApplicationContext.getBean(AbstractApplicationContext.java:1168) ~[spring-context-5.3.31.jar:5.3.31] at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:919) ~[spring-context-5.3.31.jar:5.3.31] at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:591) ~[spring-context-5.3.31.jar:5.3.31] at org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext.refresh(ServletWebServerApplicationContext.java:147) ~[spring-boot-2.7.18.jar:2.7.18] at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:732) [spring-boot-2.7.18.jar:2.7.18] at org.springframework.boot.SpringApplication.refreshContext(SpringApplication.java:409) [spring-boot-2.7.18.jar:2.7.18] at org.springframework.boot.SpringApplication.run(SpringApplication.java:308) [spring-boot-2.7.18.jar:2.7.18] at org.springframework.boot.SpringApplication.run(SpringApplication.java:1300) [spring-boot-2.7.18.jar:2.7.18] at org.springframework.boot.SpringApplication.run(SpringApplication.java:1289) [spring-boot-2.7.18.jar:2.7.18] at com.hxl.bi.BiApplication.main(BiApplication.java:30) [classes/:na] Caused by: org.hibernate.service.spi.ServiceException: Unable to create requested service [org.hibernate.cache.spi.RegionFactory] at org.hibernate.service.internal.AbstractServiceRegistryImpl.createService(AbstractServiceRegistryImpl.java:284) ~[hibernate-core-5.6.15.Final.jar:5.6.15.Final] at org.hibernate.service.internal.AbstractServiceRegistryImpl.initializeService(AbstractServiceRegistryImpl.java:246) ~[hibernate-core-5.6.15.Final.jar:5.6.15.Final] at org.hibernate.service.internal.AbstractServiceRegistryImpl.getService(AbstractServiceRegistryImpl.java:223) ~[hibernate-core-5.6.15.Final.jar:5.6.15.Final] at org.hibernate.boot.internal.MetadataBuilderImpl$MetadataBuildingOptionsImpl.<init>(MetadataBuilderImpl.java:713) ~[hibernate-core-5.6.15.Final.jar:5.6.15.Final] at org.hibernate.boot.internal.MetadataBuilderImpl.<init>(MetadataBuilderImpl.java:123) ~[hibernate-core-5.6.15.Final.jar:5.6.15.Final] at org.hibernate.boot.MetadataSources.getMetadataBuilder(MetadataSources.java:158) ~[hibernate-core-5.6.15.Final.jar:5.6.15.Final] at org.hibernate.jpa.boot.internal.EntityManagerFactoryBuilderImpl.<init>(EntityManagerFactoryBuilderImpl.java:250) ~[hibernate-core-5.6.15.Final.jar:5.6.15.Final] at org.hibernate.jpa.boot.internal.EntityManagerFactoryBuilderImpl.<init>(EntityManagerFactoryBuilderImpl.java:182) ~[hibernate-core-5.6.15.Final.jar:5.6.15.Final] at org.springframework.orm.jpa.vendor.SpringHibernateJpaPersistenceProvider.createContainerEntityManagerFactory(SpringHibernateJpaPersistenceProvider.java:52) ~[spring-orm-5.3.31.jar:5.3.31] at org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean.createNativeEntityManagerFactory(LocalContainerEntityManagerFactoryBean.java:365) ~[spring-orm-5.3.31.jar:5.3.31] at org.springframework.orm.jpa.AbstractEntityManagerFactoryBean.buildNativeEntityManagerFactory(AbstractEntityManagerFactoryBean.java:409) ~[spring-orm-5.3.31.jar:5.3.31] at org.springframework.orm.jpa.AbstractEntityManagerFactoryBean.afterPropertiesSet(AbstractEntityManagerFactoryBean.java:396) ~[spring-orm-5.3.31.jar:5.3.31] at org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean.afterPropertiesSet(LocalContainerEntityManagerFactoryBean.java:341) ~[spring-orm-5.3.31.jar:5.3.31] at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.invokeInitMethods(AbstractAutowireCapableBeanFactory.java:1863) ~[spring-beans-5.3.31.jar:5.3.31] at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1800) ~[spring-beans-5.3.31.jar:5.3.31] ... 16 common frames omitted Caused by: org.hibernate.boot.registry.selector.spi.StrategySelectionException: Unable to resolve name [org.hibernate.cache.jcache.JCacheRegionFactory] as strategy [org.hibernate.cache.spi.RegionFactory] at org.hibernate.boot.registry.selector.internal.StrategySelectorImpl.selectStrategyImplementor(StrategySelectorImpl.java:156) ~[hibernate-core-5.6.15.Final.jar:5.6.15.Final] at org.hibernate.boot.registry.selector.internal.StrategySelectorImpl.resolveStrategy(StrategySelectorImpl.java:239) ~[hibernate-core-5.6.15.Final.jar:5.6.15.Final] at org.hibernate.boot.registry.selector.internal.StrategySelectorImpl.resolveStrategy(StrategySelectorImpl.java:192) ~[hibernate-core-5.6.15.Final.jar:5.6.15.Final] at org.hibernate.cache.internal.RegionFactoryInitiator.resolveRegionFactory(RegionFactoryInitiator.java:93) ~[hibernate-core-5.6.15.Final.jar:5.6.15.Final] at org.hibernate.cache.internal.RegionFactoryInitiator.initiateService(RegionFactoryInitiator.java:47) ~[hibernate-core-5.6.15.Final.jar:5.6.15.Final] at org.hibernate.cache.internal.RegionFactoryInitiator.initiateService(RegionFactoryInitiator.java:32) ~[hibernate-core-5.6.15.Final.jar:5.6.15.Final] at org.hibernate.boot.registry.internal.StandardServiceRegistryImpl.initiateService(StandardServiceRegistryImpl.java:101) ~[hibernate-core-5.6.15.Final.jar:5.6.15.Final] at org.hibernate.service.internal.AbstractServiceRegistryImpl.createService(AbstractServiceRegistryImpl.java:272) ~[hibernate-core-5.6.15.Final.jar:5.6.15.Final] ... 30 common frames omitted Caused by: org.hibernate.boot.registry.classloading.spi.ClassLoadingException: Unable to load class [org.hibernate.cache.jcache.JCacheRegionFactory] at org.hibernate.boot.registry.classloading.internal.ClassLoaderServiceImpl.classForName(ClassLoaderServiceImpl.java:133) ~[hibernate-core-5.6.15.Final.jar:5.6.15.Final] at org.hibernate.boot.registry.selector.internal.StrategySelectorImpl.selectStrategyImplementor(StrategySelectorImpl.java:152) ~[hibernate-core-5.6.15.Final.jar:5.6.15.Final] ... 37 common frames omitted Caused by: java.lang.ClassNotFoundException: Could not load requested class : org.hibernate.cache.jcache.JCacheRegionFactory at org.hibernate.boot.registry.classloading.internal.AggregatedClassLoader.findClass(AggregatedClassLoader.java:210) ~[hibernate-core-5.6.15.Final.jar:5.6.15.Final] at java.lang.ClassLoader.loadClass(ClassLoader.java:419) ~[na:1.8.0_432] at java.lang.ClassLoader.loadClass(ClassLoader.java:352) ~[na:1.8.0_432] at java.lang.Class.forName0(Native Method) ~[na:1.8.0_432] at java.lang.Class.forName(Class.java:348) ~[na:1.8.0_432] at org.hibernate.boot.registry.classloading.internal.ClassLoaderServiceImpl.classForName(ClassLoaderServiceImpl.java:130) ~[hibernate-core-5.6.15.Final.jar:5.6.15.Final] ... 38 common frames omitted
最新发布
07-26
<think>根据错误堆栈，问题核心在于：Hibernate无法加载`org.hibernate.cache.jcache.JCacheRegionFactory`类。这通常是因为缺少必要的依赖。 ### 错误分析 1. **根本原因**：`ClassNotFoundException: org.hibernate.cache.jcache.JCacheRegionFactory` 2. **依赖缺失**：未添加`hibernate-jcache`模块 3. **版本冲突**：可能引入了不兼容的缓存依赖 ### 解决方案（Spring Boot 2.7 + Hibernate 5.6.15） #### 步骤1：添加必要依赖（Maven） ```xml <!-- 必须添加的依赖 --> <dependency> <groupId>org.hibernate</groupId> <artifactId>hibernate-jcache</artifactId> <version>5.6.15.Final</version> <!-- 必须与hibernate-core版本一致 --> </dependency> <dependency> <groupId>org.ehcache</groupId> <artifactId>ehcache</artifactId> <version>3.10.0</version> <!-- Ehcache 3.x --> </dependency> ``` #### 步骤2：排除冲突依赖（如有） 检查是否包含旧版缓存依赖（如`hibernate-ehcache`），需排除： ```xml <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-data-jpa</artifactId> <exclusions> <!-- 排除可能冲突的缓存包 --> <exclusion> <groupId>org.hibernate</groupId> <artifactId>hibernate-ehcache</artifactId> </exclusion> </exclusions> </dependency> ``` #### 步骤3：验证依赖树 执行`mvn dependency:tree`检查依赖： ``` [INFO] | +- org.hibernate:hibernate-core:jar:5.6.15.Final:compile [INFO] | | +- ... [INFO] | | \- org.hibernate:hibernate-jcache:jar:5.6.15.Final:compile <!-- 必须存在 --> ``` #### 步骤4：配置修正（application.yml） ```yaml spring: jpa: properties: hibernate: cache: region.factory_class: org.hibernate.cache.jcache.JCacheRegionFactory use_second_level_cache: true javax: cache: provider: org.ehcache.jsr107.EhcacheCachingProvider ``` ### 错误排查流程图 ```mermaid graph TD A[启动报错 RegionFactory加载失败] --> B{检查是否添加hibernate-jcache} B -->|已添加| C[检查版本是否匹配Hibernate] B -->|未添加| D[添加hibernate-jcache依赖] C -->|版本不匹配| E[调整为相同版本] C -->|版本匹配| F[检查Ehcache 3.x依赖] F -->|存在| G[检查类冲突] F -->|不存在| H[添加ehcache依赖] G -->|有冲突| I[排除旧缓存依赖] G -->|无冲突| J[检查配置文件] ``` ### 关键注意点 - **版本一致性**：`hibernate-jcache`版本必须与`hibernate-core`完全一致（5.6.15.Final） - **Spring Boot缓存自动配置**：若使用`spring-boot-starter-cache`，需额外配置`@EnableCaching` §§相关问题§§ 1. 在Spring Boot项目中如何通过Maven命令快速验证hibernate-jcache依赖是否被正确加载？ 2. 如果使用Redisson作为Hibernate二级缓存，RegionFactory的配置值应该是什么？ 3. 当同时存在多个JCache提供者（Ehcache/Redis/Hazelcast）时，如何精确指定使用Ehcache？ 4. 为什么在排除hibernate-ehcache依赖后仍然可能遇到类加载冲突？如何彻底解决？ 5. Hibernate 5.6中是否可以通过编程方式配置RegionFactory而不使用properties文件？</think>### 解决 `JCacheRegionFactory` 加载失败问题 根据错误堆栈，核心问题是 **`ClassNotFoundException: org.hibernate.cache.jcache.JCacheRegionFactory`**。这表示 Hibernate 无法找到所需的缓存实现类，根本原因是 **依赖配置不完整或版本冲突**。 --- ### 解决方案步骤 #### 1. 添加必需的依赖（Maven） ```xml <!-- 必须添加的依赖 --> <dependency> <groupId>org.hibernate</groupId> <artifactId>hibernate-jcache</artifactId> <!-- 提供JCacheRegionFactory --> <version>5.6.15.Final</version> <!-- 必须与hibernate-core版本一致 --> </dependency> <dependency> <groupId>org.ehcache</groupId> <artifactId>ehcache</artifactId> <!-- Ehcache 3.x 实现 --> <version>3.10.0</version> </dependency> <dependency> <groupId>javax.cache</groupId> <artifactId>cache-api</artifactId> <!-- JSR-107 API --> <version>1.1.1</version> </dependency> ``` #### 2. 检查并排除冲突依赖 在 `spring-boot-starter-data-jpa` 中排除旧版缓存依赖： ```xml <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-data-jpa</artifactId> <exclusions> <exclusion> <groupId>org.hibernate</groupId> <artifactId>hibernate-ehcache</artifactId> <!-- 移除Ehcache 2.x支持 --> </exclusion> </exclusions> </dependency> ``` #### 3. 验证依赖树 执行命令检查依赖： ```bash mvn dependency:tree | grep -E 'hibernate|ehcache|cache' ``` 期望输出应包含： ``` [INFO] | +- org.hibernate:hibernate-jcache:jar:5.6.15.Final [INFO] | +- org.ehcache:ehcache:jar:3.10.0 [INFO] | \- javax.cache:cache-api:jar:1.1.1 ``` #### 4. 修复配置（application.yml） ```yaml spring: jpa: properties: hibernate: cache: region.factory_class: org.hibernate.cache.jcache.JCacheRegionFactory use_second_level_cache: true javax: cache: provider: org.ehcache.jsr107.EhcacheCachingProvider # 可选：指定配置文件位置 uri: classpath:ehcache.xml ``` --- ### 关键错误排查点 1. **版本一致性检查**： - 确认所有 Hibernate 组件版本为 `5.6.15.Final` - 确保无其他依赖引入旧版 `hibernate-ehcache` 2. **类加载验证**： 在启动类中添加检查代码： ```java @PostConstruct public void checkCacheClasses() { checkClass("org.hibernate.cache.jcache.JCacheRegionFactory"); checkClass("org.ehcache.jsr107.EhcacheCachingProvider"); } private void checkClass(String className) { try { Class.forName(className); System.out.println("✅ " + className); } catch (ClassNotFoundException e) { System.out.println("❌ " + className); } } ``` 3. **日志调试**： 在 `application.yml` 中启用调试日志： ```yaml logging: level: org.hibernate: DEBUG org.ehcache: DEBUG org.springframework.orm.jpa: TRACE ``` --- ### 典型错误场景 | 错误原因 | 解决方案 | |---------|---------| | 缺少 `hibernate-jcache` | 添加对应版本依赖 | | 存在 `hibernate-ehcache` | 排除冲突依赖 | | Ehcache 3.x 未配置 JSR-107 | 添加 `cache-api` 依赖 | | 类路径中存在多个缓存实现 | 显式指定 `javax.cache.provider` |
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