Struts2 Demo

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下面两张图，用 viso 画了1个小时~ viso 很强大啊！

工作原理

Struts2的工作原理（图解）详解
Struts2基本原理

Struts2原理.png-163.3kB

工作流程

Struts2步骤.png-284.9kB

Hello World Demo

Struts 2 hello world (XML版本)

1.png-14.5kB

web.xml

配置 Struts 2

<?xml version="1.0" encoding="UTF-8"?><web-app version="2.5" xmlns="http://java.sun.com/xml/ns/javaee"    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"    xsi:schemaLocation="http://java.sun.com/xml/ns/javaee     http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd">    <display-name></display-name>    <welcome-file-list>        <welcome-file>HelloWorld.jsp</welcome-file>    </welcome-file-list>    <!-- Struts2配置 -->    <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></web-app>

struts.xml

配置每个Action。

<?xml version="1.0" encoding="UTF-8" ?><!DOCTYPE struts PUBLIC    "-//Apache Software Foundation//DTD Struts Configuration 2.3//EN"    "http://struts.apache.org/dtds/struts-2.3.dtd"><struts>    <package name="struts2" extends="struts-default">        <global-results>            <result name="login">/HelloWorld.jsp</result>        </global-results>        <action name="loginPerson" class="action.LoginAction">            <result name="success">/welcome.jsp</result>        </action>    </package></struts>

HelloWorld.jsp

<%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%><!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"><html><head><title>登录界面</title></head><body>    <form action="loginPerson">        <table>            <tr>                <td>账号</td>                <td><input type="text" name="account"></td>            </tr>            <tr>                <td>密码</td>                <td><input type="password" name="password"></td>            </tr>            <tr>                <td><input type="submit" value="登录"></td>            </tr>        </table>    </form></body></html>

welcome.jsp

<%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%><!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"><html><head><title>欢迎界面</title></head><body>    welcome!    <%=request.getAttribute("account")%></body></html>

LoginAction.java

package action;import com.opensymphony.xwork2.ActionSupport;public class LoginAction extends ActionSupport {    private String account;    private String password;    public String getAccount() {        return account;    }    public void setAccount(String account) {        this.account = account;    }    public String getPassword() {        return password;    }    public void setPassword(String password) {        this.password = password;    }    @Override    public String execute() throws Exception {        if ("yano".equals(account) && "123456".equals(password)) {            return SUCCESS;        }        return LOGIN;    }}

下载链接

http://pan.baidu.com/s/1pKNZix9

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