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

╰+哭是因爲堅強的太久メ 2022-06-03 03:52 113阅读 0赞

## 错误信息 ##

严重: Exception starting filter [struts2]
    Class: com.opensymphony.xwork2.spring.SpringObjectFactory
    File: SpringObjectFactory.java
    Method: getClassInstance
    Line: 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>