严重: Exception starting filter [struts2] Class: com.opensymphony.xwork2.spring.SpringObjectFactory Fi

错误信息

严重: Exception starting filter [struts2]Class: com.opensymphony.xwork2.spring.SpringObjectFactoryFile: SpringObjectFactory.javaMethod: getClassInstanceLine: 245 - com/opensymphony/xwork2/spring/SpringObjectFactory.java:245:-1    at org.apache.struts2.dispatcher.Dispatcher.init(Dispatcher.java:493)    at org.apache.struts2.dispatcher.ng.InitOperations.initDispatcher(InitOperations.java:74)    at org.apache.struts2.dispatcher.ng.filter.StrutsPrepareAndExecuteFilter.init(StrutsPrepareAndExecuteFilter.java:57)    at org.apache.catalina.core.ApplicationFilterConfig.initFilter(ApplicationFilterConfig.java:285)    at org.apache.catalina.core.ApplicationFilterConfig.getFilter(ApplicationFilterConfig.java:266)    at org.apache.catalina.core.ApplicationFilterConfig.<init>(ApplicationFilterConfig.java:108)    at org.apache.catalina.core.StandardContext.filterStart(StandardContext.java:4590)    at org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5233)    at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150)    at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1419)    at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1409)    at java.util.concurrent.FutureTask.run(Unknown Source)    at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source)    at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)    at java.lang.Thread.run(Unknown Source)Caused by: java.lang.NullPointerException    at com.opensymphony.xwork2.spring.SpringObjectFactory.getClassInstance(SpringObjectFactory.java:245)    at com.opensymphony.xwork2.config.providers.XmlConfigurationProvider.verifyResultType(XmlConfigurationProvider.java:608)    at com.opensymphony.xwork2.config.providers.XmlConfigurationProvider.addResultTypes(XmlConfigurationProvider.java:578)    at com.opensymphony.xwork2.config.providers.XmlConfigurationProvider.addPackage(XmlConfigurationProvider.java:534)    at com.opensymphony.xwork2.config.providers.XmlConfigurationProvider.loadPackages(XmlConfigurationProvider.java:295)    at org.apache.struts2.config.StrutsXmlConfigurationProvider.loadPackages(StrutsXmlConfigurationProvider.java:112)    at com.opensymphony.xwork2.config.impl.DefaultConfiguration.reloadContainer(DefaultConfiguration.java:264)    at com.opensymphony.xwork2.config.ConfigurationManager.getConfiguration(ConfigurationManager.java:67)    at org.apache.struts2.dispatcher.Dispatcher.getContainer(Dispatcher.java:967)    at org.apache.struts2.dispatcher.Dispatcher.init_PreloadConfiguration(Dispatcher.java:435)    at org.apache.struts2.dispatcher.Dispatcher.init(Dispatcher.java:479)    ... 14 more

错误原因

在启动时，缺少Spring配置文件

解决方法

在web.xml文件中，添加ContextLoardListener监听器

<context-param>        <param-name>contextConfigLocation</param-name>        <param-value>classpath:applicationContext.xml</param-value>    </context-param>    <listener>        <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>    </listener>