J2EE 部署项目报错

最新推荐文章于 2018-08-03 20:09:59 发布

原创最新推荐文章于 2018-08-03 20:09:59 发布 · 938 阅读

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在部署J2EE应用时遇到了严重错误，具体表现为Spring初始化bean时因找不到WEB-INF/hibernate.cfg.xml文件而抛出FileNotFoundException。尝试通过在web.xml中配置contextConfigLocation来解决，但导致新的问题。最终发现是缺少了commons-pool.jar库，并通过精确指定contextConfigLocation为/WEB-INF/applicationContext.xml解决了所有问题。

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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 ServletContext resource [/WEB-INF/applicationContext.xml]: Invocation of init method failed; nested exception is java.io.FileNotFoundException: class path resource [WEB-INF/hibernate.cfg.xml] cannot be resolved to URL because it does not exist
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$1.getObject(AbstractBeanFactory.java:294)
at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:225)
at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:291)
at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:193)
at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:567)
at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:913)
at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:464)
at org.springframework.web.context.ContextLoader.configureAndRefreshWebApplicationContext(ContextLoader.java:385)
at org.springframework.web.context.ContextLoader.initWebApplicationContext(ContextLoader.java:284)
at org.springframework.web.context.ContextLoaderListener.contextInitialized(ContextLoaderListener.java:111)
at org.apache.catalina.core.StandardContext.listenerStart(StandardContext.java:4791)
at org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5285)
at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150)
at org.apache.catalina.core.StandardContext.reload(StandardContext.java:3920)
at org.apache.catalina.startup.HostConfig.checkResources(HostConfig.java:1357)
at org.apache.catalina.startup.HostConfig.check(HostConfig.java:1451)
at org.apache.catalina.startup.HostConfig.lifecycleEvent(HostConfig.java:296)
at org.apache.catalina.util.LifecycleSupport.fireLifecycleEvent(LifecycleSupport.java:119)
at org.apache.catalina.util.LifecycleBase.fireLifecycleEvent(LifecycleBase.java:90)
at org.apache.catalina.core.ContainerBase.backgroundProcess(ContainerBase.java:1374)
at org.apache.catalina.core.ContainerBase$ContainerBackgroundProcessor.processChildren(ContainerBase.java:1530)
at org.apache.catalina.core.ContainerBase$ContainerBackgroundProcessor.processChildren(ContainerBase.java:1540)
at org.apache.catalina.core.ContainerBase$ContainerBackgroundProcessor.run(ContainerBase.java:1519)
at java.lang.Thread.run(Thread.java:619)
Caused by: java.io.FileNotFoundException: class path resource [WEB-INF/hibernate.cfg.xml] cannot be resolved to URL because it does not exist
at org.springframework.core.io.ClassPathResource.getURL(ClassPathResource.java:179)
at org.springframework.orm.hibernate3.LocalSessionFactoryBean.buildSessionFactory(LocalSessionFactoryBean.java:642)
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)
... 26 more

解决：1、把下面的内容配置到web.xml中
（我第一次用的这个，暂时对了。）

<context-param>
<param-name>contextConfigLocation</param-name>
<param-value>/WEB-INF/applicationContext-*.xml,classpath*:applicationContext-*.xml</param-value>
</context-param>

附：这个做法虽然能使服务器启动起来，但是当后面提交表单时就会出Unable to instantiate Action的错，因为这样写根本就让服务器找不到正确的applicationContext.xml文件。所以这样写是错的。
我的错误和楼主一样，但是被sz274071580这种做法迷惑了，一直找Unable to instantiate Action的错，浪费了很长时间
原来我根本的错误就是少了一个commons-pool.jar

http://bbs.youkuaiyun.com/topics/220044732

2、据说加一个commons-pool.jar包就可以了。。

3、其实，1和2都做了以后，部署没有报错了，但是运行的时候，会有空指针。然后我改了一下1的东西，改成了

<context-param>
<param-name>contextConfigLocation</param-name>
<param-value>/WEB-INF/applicationContext.xml</param-value>
</context-param>

终于运行成功了。

ps：1的方法有的人说找不到正确的app....xml，其实是因为它本身路径的问题。