hibernate.cfg.xml中針對不同版本的hibernate版本，配置的二級緩存。?? ????????<!--?hibernate4.0?指定二級緩存的外部實現(xiàn)類?--> ????????<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>? ????????-->環(huán)境：eclipse4.5 + mysql5.5 +Hibernate4報錯：java.lang.ExceptionInInitializerError?? ?at com.arclight.hibernate.session.test.Session2Test.test(Session2Test.java:21)?? ?at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)?? ?at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)?? ?at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)?? ?at java.lang.reflect.Method.invoke(Method.java:606)?? ?at org.junit.internal.runners.TestMethod.invoke(TestMethod.java:59)?? ?at org.junit.internal.runners.MethodRoadie.runTestMethod(MethodRoadie.java:98)?? ?at org.junit.internal.runners.MethodRoadie$2.run(MethodRoadie.java:79)?? ?at org.junit.internal.runners.MethodRoadie.runBeforesThenTestThenAfters(MethodRoadie.java:87)?? ?at org.junit.internal.runners.MethodRoadie.runTest(MethodRoadie.java:77)?? ?at org.junit.internal.runners.MethodRoadie.run(MethodRoadie.java:42)?? ?at org.junit.internal.runners.JUnit4ClassRunner.invokeTestMethod(JUnit4ClassRunner.java:88)?? ?at org.junit.internal.runners.JUnit4ClassRunner.runMethods(JUnit4ClassRunner.java:51)?? ?at org.junit.internal.runners.JUnit4ClassRunner$1.run(JUnit4ClassRunner.java:44)?? ?at org.junit.internal.runners.ClassRoadie.runUnprotected(ClassRoadie.java:27)?? ?at org.junit.internal.runners.ClassRoadie.runProtected(ClassRoadie.java:37)?? ?at org.junit.internal.runners.JUnit4ClassRunner.run(JUnit4ClassRunner.java:42)?? ?at org.eclipse.jdt.internal.junit4.runner.JUnit4TestReference.run(JUnit4TestReference.java:86)?? ?at org.eclipse.jdt.internal.junit.runner.TestExecution.run(TestExecution.java:38)?? ?at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:459)?? ?at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:675)?? ?at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.run(RemoteTestRunner.java:382)?? ?at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.main(RemoteTestRunner.java:192)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:261)?? ?at org.hibernate.service.internal.AbstractServiceRegistryImpl.initializeService(AbstractServiceRegistryImpl.java:225)?? ?at org.hibernate.service.internal.AbstractServiceRegistryImpl.getService(AbstractServiceRegistryImpl.java:206)?? ?at org.hibernate.cfg.SettingsFactory.buildSettings(SettingsFactory.java:295)?? ?at org.hibernate.cfg.Configuration.buildSettingsInternal(Configuration.java:2444)?? ?at org.hibernate.cfg.Configuration.buildSettings(Configuration.java:2440)?? ?at org.hibernate.cfg.Configuration.buildSessionFactory(Configuration.java:1857)?? ?at com.arclight.hibernate.session.util.HibernateUtil.<clinit>(HibernateUtil.java:19)?? ?... 23 moreCaused by: org.hibernate.HibernateException: could not instantiate RegionFactory [org.hibernate.cache.ehcache.EhCacheRegionFactory]?? ?at org.hibernate.cache.internal.RegionFactoryInitiator.initiateService(RegionFactoryInitiator.java:101)?? ?at org.hibernate.cache.internal.RegionFactoryInitiator.initiateService(RegionFactoryInitiator.java:46)?? ?at org.hibernate.boot.registry.internal.StandardServiceRegistryImpl.initiateService(StandardServiceRegistryImpl.java:105)?? ?at org.hibernate.service.internal.AbstractServiceRegistryImpl.createService(AbstractServiceRegistryImpl.java:251)?? ?... 30 moreCaused by: org.hibernate.boot.registry.selector.spi.StrategySelectionException: Unable to resolve name [org.hibernate.cache.ehcache.EhCacheRegionFactory] as strategy [org.hibernate.cache.spi.RegionFactory]?? ?at org.hibernate.boot.registry.selector.internal.StrategySelectorImpl.selectStrategyImplementor(StrategySelectorImpl.java:128)?? ?at org.hibernate.cache.internal.RegionFactoryInitiator.initiateService(RegionFactoryInitiator.java:87)?? ?... 33 more