剛才親自試驗把注解放在方法set（）中，會出現(xiàn)一模一樣的錯誤

很有可能是jar包沒下載全，導(dǎo)致沒有持久化這個方法，所以當(dāng)你下載完之后運行就沒有問題啦

怎么解決的 ，，，一樣的問題

這個問題真的很疑惑，我修改了對應(yīng)的maven依賴包，之后又查了資料（一個挺好的資料：http://www.tuicool.com/articles/3uEbmme），改了啟動不好用又還原，下午又好使了！可是代碼和剛開始的沒有差別。估計還是依賴jar包版本的問題。

這是我遇到的錯誤信息。

org.springframework.beans.factory.BeanCreationException:?Error?creating?bean?with?name?'entityManagerFactory'?defined?in?class?path?resource?[beans-new.xml]:?Invocation?of?init?method?failed;?nested?exception?is?javax.persistence.PersistenceException:?[PersistenceUnit:?default]?Unable?to?build?Hibernate?SessionFactory

????at?org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1589)
????at?org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:554)
????at?org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:483)
????at?org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:306)
????at?org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:230)
????at?org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:302)
????at?org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:197)
????at?org.springframework.context.support.AbstractApplicationContext.getBean(AbstractApplicationContext.java:1081)
????at?org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:856)
????at?org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:542)
????at?org.springframework.context.support.ClassPathXmlApplicationContext.<init>(ClassPathXmlApplicationContext.java:139)
????at?org.springframework.context.support.ClassPathXmlApplicationContext.<init>(ClassPathXmlApplicationContext.java:83)
????at?com.imooc.dao.CommodityDaoJpaImplTest.init(CommodityDaoJpaImplTest.java:19)
????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.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:47)
????at?org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:12)
????at?org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:44)
????at?org.junit.internal.runners.statements.RunBefores.evaluate(RunBefores.java:24)
????at?org.junit.internal.runners.statements.RunAfters.evaluate(RunAfters.java:27)
????at?org.junit.runners.ParentRunner.runLeaf(ParentRunner.java:271)
????at?org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:70)
????at?org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:50)
????at?org.junit.runners.ParentRunner$3.run(ParentRunner.java:238)
????at?org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:63)
????at?org.junit.runners.ParentRunner.runChildren(ParentRunner.java:236)
????at?org.junit.runners.ParentRunner.access$000(ParentRunner.java:53)
????at?org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:229)
????at?org.junit.runners.ParentRunner.run(ParentRunner.java:309)
????at?org.junit.runner.JUnitCore.run(JUnitCore.java:160)
????at?com.intellij.junit4.JUnit4IdeaTestRunner.startRunnerWithArgs(JUnit4IdeaTestRunner.java:68)
????at?com.intellij.rt.execution.junit.IdeaTestRunner$Repeater.startRunnerWithArgs(IdeaTestRunner.java:51)
????at?com.intellij.rt.execution.junit.JUnitStarter.prepareStreamsAndStart(JUnitStarter.java:237)
????at?com.intellij.rt.execution.junit.JUnitStarter.main(JUnitStarter.java:70)
????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?com.intellij.rt.execution.application.AppMain.main(AppMain.java:147)
Caused?by:?javax.persistence.PersistenceException:?[PersistenceUnit:?default]?Unable?to?build?Hibernate?SessionFactory
????at?org.hibernate.jpa.boot.internal.EntityManagerFactoryBuilderImpl.persistenceException(EntityManagerFactoryBuilderImpl.java:1225)
????at?org.hibernate.jpa.boot.internal.EntityManagerFactoryBuilderImpl.access$600(EntityManagerFactoryBuilderImpl.java:119)
????at?org.hibernate.jpa.boot.internal.EntityManagerFactoryBuilderImpl$4.perform(EntityManagerFactoryBuilderImpl.java:853)
????at?org.hibernate.jpa.boot.internal.EntityManagerFactoryBuilderImpl$4.perform(EntityManagerFactoryBuilderImpl.java:843)
????at?org.hibernate.boot.registry.classloading.internal.ClassLoaderServiceImpl.withTccl(ClassLoaderServiceImpl.java:398)
????at?org.hibernate.jpa.boot.internal.EntityManagerFactoryBuilderImpl.build(EntityManagerFactoryBuilderImpl.java:842)
????at?org.hibernate.jpa.HibernatePersistenceProvider.createContainerEntityManagerFactory(HibernatePersistenceProvider.java:152)
????at?org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean.createNativeEntityManagerFactory(LocalContainerEntityManagerFactoryBean.java:338)
????at?org.springframework.orm.jpa.AbstractEntityManagerFactoryBean.afterPropertiesSet(AbstractEntityManagerFactoryBean.java:318)
????at?org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.invokeInitMethods(AbstractAutowireCapableBeanFactory.java:1648)
????at?org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1585)
????...?40?more
Caused?by:?org.hibernate.AnnotationException:?No?identifier?specified?for?entity:?com.imooc.entity.Employee
????at?org.hibernate.cfg.InheritanceState.determineDefaultAccessType(InheritanceState.java:277)
????at?org.hibernate.cfg.InheritanceState.getElementsToProcess(InheritanceState.java:224)
????at?org.hibernate.cfg.AnnotationBinder.bindClass(AnnotationBinder.java:775)
????at?org.hibernate.cfg.Configuration$MetadataSourceQueue.processAnnotatedClassesQueue(Configuration.java:3788)
????at?org.hibernate.cfg.Configuration$MetadataSourceQueue.processMetadata(Configuration.java:3742)
????at?org.hibernate.cfg.Configuration.secondPassCompile(Configuration.java:1410)
????at?org.hibernate.cfg.Configuration.buildSessionFactory(Configuration.java:1844)
????at?org.hibernate.jpa.boot.internal.EntityManagerFactoryBuilderImpl$4.perform(EntityManagerFactoryBuilderImpl.java:850)
????...?48?more