问题描述

最简单的struts2程序，总是提示404，求大神指点

<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE struts PUBLIC
"-//Apache Software Foundation//DTD Struts Configuration 2.0//EN"
"http://struts.apache.org/dtds/struts-2.0.dtd">

    <action name="helloworld" class="cn.itcast.action.HelloWorldAction" method="execute" >
        <result name="success">/WEB-INF/page/Hello.jsp</result>
    </action>
</package>

<?xml version="1.0" encoding="UTF-8"?>
<web-app version="2.4"
    xmlns="http://java.sun.com/xml/ns/j2ee"
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    xsi:schemaLocation="http://java.sun.com/xml/ns/j2ee
    http://java.sun.com/xml/ns/j2ee/web-app_2_4.xsd">

    <filter>
        <filter-name>struts2</filter-name>
        <filter-class>org.apache.struts2.dispatcher.ng.filter.StrutsPrepareAndExecuteFilter</filter-class>
    </filter>

    <!-- 配置Struts2的核心FilterDispatcher拦截所有用户请求 -->
    <filter-mapping>
        <filter-name>struts2</filter-name>
        <url-pattern>/*</url-pattern>
    </filter-mapping>

  <welcome-file-list>
    <welcome-file>index.jsp</welcome-file>
  </welcome-file-list>
</web-app>

package cn.itcast.action;

public class HelloWorldAction {
private String msg;

public String getMsg() {
    return msg;
}

public String execute(){
    System.out.println(".......");
    msg = "我的第一个struts2应用";
    return "success";
}

}

 <%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%>
<%
String path = request.getContextPath();
String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/";
%>

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
  <head>
    <base href="<%=basePath%>">

    <title>My JSP 'Hello.jsp' starting page</title>

    <meta http-equiv="pragma" content="no-cache">
    <meta http-equiv="cache-control" content="no-cache">
    <meta http-equiv="expires" content="0">
    <meta http-equiv="keywords" content="keyword1,keyword2,keyword3">
    <meta http-equiv="description" content="This is my page">
    <!--
    <link rel="stylesheet" type="text/css" href="styles.css">
    -->

  </head>

  <body>
    ${msg }
  </body>
</html>

解决方案

localhost：8080是这个吗？

解决方案二：

http://blog.163.com/yutao_inx_319/blog/static/2072340072014111523337761/
http://zhidao.baidu.com/link?url=cOfW1yYQMUU5hubGmMy68OqYHBa5sX2RSYhrxFbaqyZvEgBkagnu_GxdRfa_icPXL32YEqiDu1Usj-3Xa9Voca

解决方案三：

解决方案四：

端口号你设置了8888吗？

解决方案五：

端口对的话，试试看你配置文件package中的namespace有没有写错，是不是Test?