搭建SSH框架解决的小问题org.springframework.beans.factory.BeanCreationException

在以前搭建的一个SSH框架Demo在今天运行时报了如下错误信息：

严重: 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 stream
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1455)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:519)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:456)
at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:294)
at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:225)
at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:291)
at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:193)
at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:567)
at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:913)
at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:464)
at org.springframework.web.context.ContextLoader.configureAndRefreshWebApplicationContext(ContextLoader.java:385)
at org.springframework.web.context.ContextLoader.initWebApplicationContext(ContextLoader.java:284)
at org.springframework.web.context.ContextLoaderListener.contextInitialized(ContextLoaderListener.java:111)
at org.apache.catalina.core.StandardContext.listenerStart(StandardContext.java:4791)
at org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5285)
at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150)
at org.apache.catalina.core.ContainerBase.addChildInternal(ContainerBase.java:901)
at org.apache.catalina.core.ContainerBase.addChild(ContainerBase.java:877)
at org.apache.catalina.core.StandardHost.addChild(StandardHost.java:618)
at org.apache.catalina.startup.HostConfig.deployDirectory(HostConfig.java:1100)
at org.apache.catalina.startup.HostConfig$DeployDirectory.run(HostConfig.java:1618)
at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:471)
at java.util.concurrent.FutureTask.run(FutureTask.java:262)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
at java.lang.Thread.run(Thread.java:744)
Caused by: org.hibernate.InvalidMappingException: Could not parse mapping document from input stream
at org.hibernate.cfg.Configuration.addInputStream(Configuration.java:555)
at org.springframework.orm.hibernate3.LocalSessionFactoryBean.buildSessionFactory(LocalSessionFactoryBean.java:677)
at org.springframework.orm.hibernate3.AbstractSessionFactoryBean.afterPropertiesSet(AbstractSessionFactoryBean.java:188)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.invokeInitMethods(AbstractAutowireCapableBeanFactory.java:1514)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1452)
... 25 more
Caused by: org.dom4j.DocumentException: www.hibernate.org Nested exception: www.hibernate.org
at org.dom4j.io.SAXReader.read(SAXReader.java:484)
at org.hibernate.cfg.Configuration.addInputStream(Configuration.java:546)
... 29 more

然后从网上找了一些资料及解决问题的方法，发现只要在Spring的配置文件中：

class="org.springframework.orm.hibernate3.LocalSessionFactoryBean">



 
             
                com/myssh2/beans/User.hbm.xml  
             
       



org.hibernate.dialect.MySQLDialect

里面添加

none

最后形成的文件块为：

class="org.springframework.orm.hibernate3.LocalSessionFactoryBean">



 
             
                com/myssh2/beans/User.hbm.xml  
             
       



org.hibernate.dialect.MySQLDialect



none

然后Demo成功运行。

具体原因分析： Hibernate Annotations (即 Hibernate 3.5.x) 中包含了一个的Hibernate 事件监听器(译注: 请阅读Hibernate Core文档了解Hibernate的事件模型) - org.hibernate.cfg.beanvalidation.BeanValidationEventListener - 来为Hibernate Validator服务. 当一个 PreInsertEvent , PreUpdateEvent 或 PreDeleteEvent 事件发生的时候, 这个监听器就可以对该事件所涉及到的实体对象进行校验, 如果校验不通过的话, 则抛出异常. 默认情况下, Hibernate在对每个对象进行保存或者修改操作的时候,都会对其进行校验, 而删除操作则不会. 你可以通过javax.persistence.validation.group.pre-persist, javax.persistence.validation.group.pre-update 和 javax.persistence.validation.group.pre-remove属性来定义对应事件发生的时候, 具体要校验哪(些)个校验组, 这个属性的值是要应用的校验组类的全路径, 使用逗号分隔. 例 7.1 “自定义BeanValidationEvenListener”显示了这几个属性在Hibernate内部定义的默认值, 所以, 你不需要在你的应用中再重复定义了.


如果发生了违反约束条件的情况, 该监听器会抛出一个运行时的 ConstraintViolationException 异常, 此异常包含了一系列的 ConstraintViolation 对象用于描述每个违反了约束条件的情况.


      如果类路径上有Hibernate Validator, 则Hibernate Annotations (或 Hibernate EntityManager)会自动调用它, 如果你想避免这种情况, 可以设置javax.persistence.validation.mode属性为 none .

参考资料：http://docs.jboss.org/hibernate/validator/4.2/reference/zh-CN/html/validator-integration.html