##Struts2简单实例开发
1.下载struts2 2.建立项目，导入struts2的jar包 3.配置web.xml
<?xml version="1.0" encoding="UTF-8"?> <web-app xmlns="http://xmlns.jcp.org/xml/ns/javaee" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/javaee http://xmlns.jcp.org/xml/ns/javaee/web-app_4_0.xsd" version="4.0"> <filter> <filter-name>struts2</filter-name> <filter-class>org.apache.struts2.dispatcher.filter.StrutsPrepareAndExecuteFilter</filter-class> </filter> <filter-mapping> <filter-name>struts2</filter-name> <url-pattern>/*</url-pattern> </filter-mapping> <!-- Welcome file lists --> <welcome-file-list> <welcome-file>index.jsp</welcome-file> </welcome-file-list> </web-app>4.编写Action类
package com.controller; import com.opensymphony.xwork2.ActionSupport; public class FirstAction extends ActionSupport { //用来接收表单提交的数据，需要get,set方法 private String userName; private String password; public String getUserName() { return userName; } public String getPassword() { return password; } public void setUserName(String userName) { this.userName = userName; } public void setPassword(String password) { this.password = password; } //重写execute方法 @Override public String execute() throws Exception { //模拟数据库查询，验证用户名及密码 if(userName.equals("LeBron")){ if(password.equals("123456")){ return "ok"; }else{ return "fail"; } }else{ return "fail"; } } }5.创建并配置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> <package name="default" extends="struts-default"> <action name="welcome" class="com.controller.FirstAction"> <result name="ok">/welcome.jsp</result> <result name="fail">/index.jsp</result> </action> </package> </struts>6.编写用户登录界面
<%-- Created by IntelliJ IDEA. User: yangxuechen Date: 2018/10/25 Time: 7:59 To change this template use File | Settings | File Templates. --%> <%@ page contentType="text/html;charset=UTF-8" language="java" %> <html> <head> <title>$Title$</title> </head> <body> <form action="welcome.action"> 用户名：<input type="text" name="userName"><br> 密 码：<input type="password" name="password"><br> <input type="submit" value="登陆"> </form> </body> </html>如果登录成功，则返回welcome.jsp,内容如下
<%-- Created by IntelliJ IDEA. User: yangxuechen Date: 2018/10/25 Time: 8:35 To change this template use File | Settings | File Templates. --%> <%@ page contentType="text/html;charset=UTF-8" language="java" %> <html> <head> <title>welcome</title> </head> <body> <b>欢迎，登录成功!</b> </body> </html>否则返回index.jsp 7.部署运行 8.获取源码地址https://github.com/yangxuechen/ssh-learning-example
