01：导包，web.xml配置
<?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"> <!-- 01:启动struts2框架 -->
<filter>
<filter-name>struts2</filter-name>
<filter-class>
org.apache.struts2.dispatcher.ng.filter.StrutsPrepareAndExecuteFilter
</filter-class>
</filter> <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>
02：编写action类
package com.self.action;
/**
* 02：写相应的处理方法
*/
public class HelloWorldAction { private String user;
private Integer id; //处理方法
public String helloworld(){
return "rehelloworld";
} public String getUser() {
return user;
}
public void setUser(String user) {
this.user = user;
} public Integer getId() {
return id;
} public void setId(Integer id) {
this.id = id;
} }
03：配置struts.xml
<?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"> <struts>
<!-- 01：将.action访问，改为.do和.action -->
<constant name="struts.action.extension" value="do,action" />
<!-- 02：指定默认编码，相当于HttpServletRequest的setCharacterEncoding方法，也作用于freemarker、velocity的输出 -->
<constant name="struts.i18n.encoding" value="UTF-8" /> <include file="department.xml"/>
</struts>
04:配置department.xml
<?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"> <struts>
<package name="dep" namespace="/department" extends="struts-default">
<!-- 用通配符*来指代方法名，{1}代表第一个通配符所代表的字段：这里代表方法 -->
<action name="hd_*" class="com.self.action.HelloWorldAction" method="{1}" >
<result name="rehelloworld">
/successhelloworld.jsp
</result>
</action>
</package>
</struts>
05:编写输入数据界面
<%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%>
<html>
<head> <title>显示</title>
</head> <!-- 第4步：显示 -->
<body>
<BR>
<BR>
<center>
<form action="department/hd_helloworld.do" method="post">
名：<input name="user" type="text">
<BR>
ID：<input name="id" type="text">
<BR>
<input type="submit" value="提交">
</form>
</center>
</body>
</html>
06：编写显示数据界面
<%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%>
<html>
<head> <title>显示</title>
</head> <!-- 第4步：显示 -->
<body>
<BR>
<BR>
<center>
user=${user}
<BR>
id=${id}
</center>
</body>
</html>
08：访问路径
http://localhost:8080/Struts2_01/seehelloworld.jsp