Struts Action匹配出错解决方案

今天准备试一试通配符来匹配Action,struts.xml里是这样配置的

<package name="demo1" extends="struts-default">
<action name="*Action" class="struts2demo.Login2Action" method="{1}">
<result name="success">/jsp/{1}.jsp</result>
</action>

<action name="*">
<result>/jsp/{1}.jsp</result>
</action>
</package>

表单提交页是这样写的

<s:form action="loginAction">
<s:textfield name="username" key="username"/>
<s:textfield name="password" key="password"/>
<s:submit key="submit_login"/>
</s:form>

处理Action的类也是有的,但一提交就出错:

There is no Action mapped for namespace [/] and action name [loginAction] associated with context path [/Structs2Demo]. - [unknown location]

com.opensymphony.xwork2.DefaultActionProxy.prepare(DefaultActionProxy.java:192)
org.apache.struts2.factory.StrutsActionProxy.prepare(StrutsActionProxy.java:63)
org.apache.struts2.factory.StrutsActionProxyFactory.createActionProxy(StrutsActionProxyFactory.java:37)
com.opensymphony.xwork2.DefaultActionProxyFactory.createActionProxy(DefaultActionProxyFactory.java:58)
org.apache.struts2.dispatcher.Dispatcher.serviceAction(Dispatcher.java:546)
org.apache.struts2.dispatcher.ExecuteOperations.executeAction(ExecuteOperations.java:81)
org.apache.struts2.dispatcher.filter.StrutsPrepareAndExecuteFilter.doFilter(StrutsPrepareAndExecuteFilter.java:113)
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:240)
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:207)
org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:212)
org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:106)
org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:502)
org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:141)
org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:79)
org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:616)
org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:88)
org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:528)
org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1099)
org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:672)
org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1520)
org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.run(NioEndpoint.java:1476)
java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source)
java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)
org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
java.lang.Thread.run(Unknown Source)

这个问题我终于找到了解决方案:答案是别人回答我的

2.5版本的与2.2版本之前的不一样，2,2版本以前，直接这样配置就行，从2.3以后，使用通配符的时候需要加入<allowed-methods>，2.5版本取得方法名称后，会验证改方法是否允许访问。所以需要加，里面可以写*，或者多个方法，login,logout等等，用逗号分隔
<action name="*Action" class="XXX.LoginAction" method="{1}" >
<result name="success">/jsp/a1.jsp</result>
<result name="error">/jsp/a2.jsp</result>
<allowed-methods>*</allowed-methods>  <!-- 这就是需要添加的地方-->
</action>