使用Struts2框架的HelloWorld程序
1.下载Struts2开发包：http://struts.apache.org/2.x/index.html；
2. 新建站点，添加Struts2支持：将开发包中apps\struts2-blank-2.1.8.1.war用WinRAR解压
a.将 WEB-INF\classes\struts.xml拷贝到网站项目的src目录下；
b.将WEB-INF\lib中的jar文件拷贝到网站项目的WEB-INF\lib目录下；
c.将WEB-INF\web.xml中<web-app>中的<filter>和<filter-mapping>拷贝到网站项目的<web-app>下；
3.配置 struts.xml，格式如下：
<package name="default" namespace="/" extends="struts-default">
<action name="hello" encoding="UTF-8"?>
02.<web-app version="2.5"
03. xmlns="http://java.sun.com/xml/ns/javaee"
04. xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
05. xsi:schemaLocation="http://java.sun.com/xml/ns/javaee ;
06. http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd">
07. <welcome-file-list>
08. <welcome-file>hello.jsp</welcome-file>
09. </welcome-file-list>
10. <filter>
11. <filter-name>struts2</filter-name>
12. <filter-class>org.apache.struts2.dispatcher.ng.filter.StrutsPrepareAndExecuteFilter</filter-class>
13. </filter>
14. <filter-mapping>
15. <filter-name>struts2</filter-name>
16. <url-pattern>/*</url-pattern>
17. </filter-mapping>
18.</web-app>
-------------------------------------------
struts.xml:
01.<?xml version="1.0" encoding="UTF-8" ?>
02.<!DOCTYPE struts PUBLIC
03. "-//Apache Software Foundation//DTD Struts Configuration 2.0//EN"
04. "http://struts.apache.org/dtds/struts-2.0.dtd">
05.
06.<struts>
07. <!--
08. <constant name="struts.enable.DynamicMethodInvocation" value="false" />
09. <constant name="struts.devMode" value="false" />
10.
11. <include file="example.xml"/>
12.
13.
14.
15. <package name="default" namespace="/" extends="struts-default">
16. <default-action-ref name="index" />
17. <action name="index">
18. <result type="redirectAction">
19. <param name="actionName">HelloWorld</param>
20. <param name="namespace">/example</param>
21. </result>
22. </action>
23. </package>
24. -->
25.
26. <!-- Add packages here -->
27. <constant name="struts.devMode" value="true" />
28. <package name="default" namespace="/" extends="struts-default">
29. <action name="hello" import="java.util.*" pageEncoding="ISO-8859-1"%>
02.<%
03.String path = request.getContextPath();
04.String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/";
05.%>
06.
07.<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
08.<html>
09. <head>
10. <base href="<%=basePath%>">
11.
12. <title>Hello,World!</title>
13. <meta http-equiv="pragma" content="no-cache">
14. <meta http-equiv="cache-control" content="no-cache">
15. <meta http-equiv="expires" content="0">
16. <meta http-equiv="keywords" content="keyword1,keyword2,keyword3">
17. <meta http-equiv="description" content="This is my page">
18. <!--
19. <link rel="stylesheet" type="text/css" href="styles.css">
20. -->
21. </head>
22.
23. <body>
24. Hello,World! <br>
25. </body>
26.</html>