今天在寫ssh的時候遇到了一個這樣的問題，連登陸頁面都進不去了
報錯信息如下:

嚴重: Exception sending context initialized event to listener instance of class org.springframework.web.context.ContextLoaderListener org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'sessionFactory' defined in class path resource [applicationContext.xml]: Invocation of init method failed; nested exception is org.hibernate.InvalidMappingException: Could not parse mapping document from input streamat org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1568)at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:540)at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:476)at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:302)at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:229)at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:298)at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:193)at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:706)at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:757)at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:480)at org.springframework.web.context.ContextLoader.configureAndRefreshWebApplicationContext(ContextLoader.java:403)at org.springframework.web.context.ContextLoader.initWebApplicationContext(ContextLoader.java:306)at org.springframework.web.context.ContextLoaderListener.contextInitialized(ContextLoaderListener.java:106)at org.apache.catalina.core.StandardContext.listenerStart(StandardContext.java:4727)at org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5189)at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150)at org.apache.catalina.core.ContainerBase.addChildInternal(ContainerBase.java:752)at org.apache.catalina.core.ContainerBase.addChild(ContainerBase.java:728)at org.apache.catalina.core.StandardHost.addChild(StandardHost.java:734)at org.apache.catalina.startup.HostConfig.deployDirectory(HostConfig.java:1107)at org.apache.catalina.startup.HostConfig$DeployDirectory.run(HostConfig.java:1841)at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)at java.util.concurrent.FutureTask.run(FutureTask.java:266)at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)at java.lang.Thread.run(Thread.java:745) Caused by: org.hibernate.InvalidMappingException: Could not parse mapping document from input streamat org.hibernate.cfg.Configuration$MetadataSourceQueue.processHbmXml(Configuration.java:3409)at org.hibernate.cfg.Configuration$MetadataSourceQueue.processHbmXmlQueue(Configuration.java:3398)at org.hibernate.cfg.Configuration$MetadataSourceQueue.processMetadata(Configuration.java:3386)at org.hibernate.cfg.Configuration.secondPassCompile(Configuration.java:1341)at org.hibernate.cfg.Configuration.buildSessionFactory(Configuration.java:1731)at org.hibernate.cfg.Configuration.buildSessionFactory(Configuration.java:1782)at org.springframework.orm.hibernate4.LocalSessionFactoryBuilder.buildSessionFactory(LocalSessionFactoryBuilder.java:363)at org.springframework.orm.hibernate4.LocalSessionFactoryBean.buildSessionFactory(LocalSessionFactoryBean.java:453)at org.springframework.orm.hibernate4.LocalSessionFactoryBean.afterPropertiesSet(LocalSessionFactoryBean.java:438)at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.invokeInitMethods(AbstractAutowireCapableBeanFactory.java:1627)at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1564)... 25 more Caused by: org.hibernate.DuplicateMappingException: Duplicate class/entity mapping com.ithome.user.entity.Classesat org.hibernate.cfg.Configuration$MappingsImpl.addClass(Configuration.java:2574)at org.hibernate.cfg.HbmBinder.bindRoot(HbmBinder.java:172)at org.hibernate.cfg.Configuration$MetadataSourceQueue.processHbmXml(Configuration.java:3406)... 35 more

主要錯誤為:

Invocation of init method failed; nested exception is org.hibernate.InvalidMappingException: Could not parse mapping document from input stream

翻譯:
調用init方法失敗；嵌套異常為org.hibernate.無效的映射異常:無法從輸入流分析映射文檔

問題所在:

將hibernate反向生成的映射文件配置路徑刪除，因為上面已經配置好了改目錄下的所有.xml文件，所以就不要重新配置了

解決方法:
刪除上圖中property所在的映射配置

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