我用的是struts2.5+jdk8的配置什么的都沒問題可是總是找不到.action

<?xml version="1.0" encoding="UTF-8"?>

<!DOCTYPE struts PUBLIC

? ? ?"-//Apache Software Foundation//DTD Struts Configuration 2.5//EN"

? ? ?"http://struts.apache.org/dtds/struts-2.5.dtd">

? ? ?

? ? <package name="default" namespace="/" extends="struts-default">

? ? ? ? ? ?<action name="helloworld" class="com.imooc.action.HelloWorldAction">

? ? ? ? ? ? ? ?<result>result.jsp</result>

? ? ? ? ? ?</action>

? ? </package>

</struts>

<?xml?version="1.0"?encoding="UTF-8"?>
<web-app?xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"?xmlns="http://java.sun.com/xml/ns/javaee"?xsi:schemaLocation="http://java.sun.com/xml/ns/javaee?http://java.sun.com/xml/ns/javaee/web-app_3_0.xsd"?id="WebApp_ID"?version="3.0">
??<display-name>HelloWorld</display-name>
??<welcome-file-list>
????<welcome-file>index.html</welcome-file>
????<welcome-file>index.htm</welcome-file>
????<welcome-file>index.jsp</welcome-file>
????<welcome-file>default.html</welcome-file>
????<welcome-file>default.htm</welcome-file>
????<welcome-file>default.jsp</welcome-file>
??</welcome-file-list>
??
??<filter>
?????<filter-name>Struts2</filter-name>
?????<filter-class>org.apache.struts2.dispatcher.filter.StrutsPrepareAndExecuteFilter</filter-class>
??</filter>
??
??<filter-mapping>
?????<filter-name>Struts2</filter-name>
?????<url-pattern>/*</url-pattern>
??</filter-mapping>
</web-app>