Caused by: Action class [com.struts.action.LoginAction] not found 解决方法

Caused by: Action class [com.struts.action.LoginAction] not found 解决方法

博主才开始学用eclipse + struts2框架 + tomcat开发web程序，最开始好好的，但过几天后，不知道什么原因，一启动tomcat就报错，点击struts.xml中相应的信息，我确实能找到自己的LoginAction类，在网上搜罗了各种解决办法，现在将解决办法分享出来。

先附上控制台报错信息：

[color=#FF0000]Unable to load configuration. - action - file:/E:/tl/workspace/.metadata/.plugins/org.eclipse.wst.server.core/tmp0/wtpwebapps/struts2/WEB-INF/classes/struts.xml:11:82[/color]

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:281)

at org.apache.catalina.core.ApplicationFilterConfig.getFilter(ApplicationFilterConfig.java:262)

at org.apache.catalina.core.ApplicationFilterConfig.(ApplicationFilterConfig.java:107)

at org.apache.catalina.core.StandardContext.filterStart(StandardContext.java:4775)

at org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5452)

at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150)

at org.apache.catalina.core.ContainerBaseStartChild.call(ContainerBase.java:1559)atorg.apache.catalina.core.ContainerBaseStartChild.call(ContainerBase.java:1549)

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: Unable to load configuration. - action - file:/E:/tl/workspace/.metadata/.plugins/org.eclipse.wst.server.core/tmp0/wtpwebapps/struts2/WEB-INF/classes/struts.xml:11:82

at com.opensymphony.xwork2.config.ConfigurationManager.getConfiguration(ConfigurationManager.java:70)

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

Caused by: Action class [com.struts.action.LoginAction] not found - action - file:/E:/tl/workspace/.metadata/.plugins/org.eclipse.wst.server.core/tmp0/wtpwebapps/struts2/WEB-INF/classes/struts.xml:11:82

at com.opensymphony.xwork2.config.providers.XmlConfigurationProvider.verifyAction(XmlConfigurationProvider.java:486)

at com.opensymphony.xwork2.config.providers.XmlConfigurationProvider.addAction(XmlConfigurationProvider.java:429)

at com.opensymphony.xwork2.config.providers.XmlConfigurationProvider.addPackage(XmlConfigurationProvider.java:556)

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)

… 17 more

解决办法

检查action的name值和url中的大小写是否相同

检查action中的class的路径名称和你写的类名的大小写是否一致

参照struts确定是否引入不必要的jar包，引发冲突（一些没使用到jar包，能不引入就不引入吧，博主被坑过~）

如果以上方法依然不好使，你可以尝试一下以下解决方法（博主就是使用下面方法，玄学问题？）

在项目webcontent文件下面新建一个classes文件夹，把struts.xml拖到下面，就可以正常使用了，启动不再报错（然而这并不是根本原因）



清理缓存（这才是根本原因！），clean项目，应在eclipse中清理项目缓存，在菜单中（eclipse->project->clean）