01:web.xml中配置，启动struts2
<?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 message; public String helloworld_1(){ this.message="helloworld_1"; return "helloworld_1"; } public String helloworld_2(){ this.message="helloworld_2"; return "helloworld_2"; } //为属性注入值，需要提供set方法 public void setMessage(String message) { this.message = message; } //在页面显示值，需要get方法 public String getMessage() { return message; } }
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:编写引入的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="helloworld_*" class="com.self.action.HelloWorldAction" method="{1}" >
<result name="helloworld_1">
/helloworld_1.jsp
</result>
<result name="helloworld_2">
/helloworld_2.jsp
</result>
</action>
</package>
</struts>
05:编写界面1
<%@ 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>
将页面放在WEB-INF下面，这样用户直接访问不到<BR> <BR> 为action的属性注入值: ${message}
<BR>
</center>
</body>
</html>
06：编写界面2
<%@ 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>
将页面放在WEB-INF下面，这样用户直接访问不到<BR> <BR> 为action的属性注入值: ${message}
<BR>
</center>
</body>
</html>
07：访问路径1、2
http://localhost:8080/Struts2_01/department/helloworld_helloworld_1.action
http://localhost:8080/Struts2_01/department/helloworld_helloworld_2.action