Struts2入门--第一个例子

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新建java web项目

环境搭建：环境搭建说白了就是导入一些依赖jar包

第一个struts2项目需要的jar包如下：

在web.xml项目中配置struts2的核心控制器

<?xml version="1.0" encoding="ISO-8859-1"?><web-app 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_3_0.xsd"  version="3.0"  metadata-complete="false"><!-- 定义 Struts 2 的核心 Filter --><filter><filter-name>struts2</filter-name><filter-class>org.apache.struts2.dispatcher.filter.StrutsPrepareAndExecuteFilter</filter-class></filter><!-- 让 Struts 2 的核心 Filter 拦截所有请求 --><filter-mapping><filter-name>struts2</filter-name><url-pattern>/*</url-pattern></filter-mapping></web-app>

创建一个动态类LoginAction.java

package com.sise.lab1.action;import com.opensymphony.xwork2.ActionSupport;public class LoginAction extends ActionSupport {/** *  */private static final long serialVersionUID = 1L;private String name;private String password;public String getName() {return name;}public void setName(String name) {this.name = name;}public String getPassword() {return password;}public void setPassword(String password) {this.password = password;}public String execute() throws Exception{if((null!=name&&name.equals("admin"))&&(null!=password&&password.equals("sise"))){return "suc";}else{return "relogin";}}}

<%@ 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 'login.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>   <center>   <form action="login.action" method="post">   用户名:<input type="text" name="name"/><br/>   密码:<input type="password" name="password"><br/>   <input type="submit" value="登陆"/>   </form>   </center>  </body></html>

welcome.jsp

<%@ 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 'welcome.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>  <h3>${name}您好,欢迎光临</h3>  </body></html>

在src下创建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><package name="lab1" extends="struts-default"><action name="login" class="com.sise.lab1.action.LoginAction"><result name="suc">/welcome.jsp</result><result name="relogin">/login.jsp</result></action></package></struts>

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