Struts2入门案例。
1.新建***页项目Strutsdemo1
2.导入相关jar包，找到F:\jar\struts-2.3.31\apps\struts2-blank\WEB-INF\lib下的所有jar包全部导入即可。
3.在web.xml文件里配置过滤器
<?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">
<!-- Struts2的功能的初始化是通过过滤器引入 -->
<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.html</welcome-file>
</welcome-file-list>
</web-app>4.创建formaction.java
package com.broccoli.action;
/** * @author zhanghongkuan * @date 2016-11-30 */
import javax.servlet.http.HttpServletRequest;
import org.apache.struts2.ServletActionContext;
import com.opensymphony.xwork2.ActionSupport;
public class formdata extends ActionSupport{
private static final long serialVersionUID = 1L;
@Override
public String execute() throws Exception {
HttpServletRequest request = ServletActionContext.getRequest();
String username = request.getParameter("username");
String password = request.getParameter("password");
if("admin".equals(username)&&"123456".equals(password)){
return "success";
}
else{
System.out.println("用户名或密码错误！");
return "error";
}
}
}
5.配置struts.xml文件
<?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="demo1" namespace="/" extends="struts-default">
<action name="formdata" class="com.broccoli.action.formdata">
<result name="success">/success.jsp</result>
<result name="error">/error.jsp</result>
</action>
</package>
</struts>
6.创建login.jsp文件
<%@ page language="java" contentType="text/html; charset=UTF-8" pageEncoding="utf-8"%>
<%@taglib uri="/struts-tags" prefix="s" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>Insert title here</title>
</head>
<body>
<form action="formdata" method="post">
用户名:<input name="username" type="text" ><br>
密 码 :<input name="password" type="text" ><br>
<input type="submit" value="登录">
</form>
</body>
</html>
7.创建success.jsp文件
<%@ page language="java" contentType="text/html; charset=utf-8" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1">
<title>成功登陆</title>
</head>
<body>
<h1>成功登陆！</h1>
<h1>Struts2 is running.....</h1>
</body>
</html>8.创建error.jsp文件
<%@ page language="java" contentType="text/html; charset=utf-8" pageEncoding="utf-8"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
<title>登录失败</title>
</head>
<body>
<h1>登录失败,请核对用户名和密码！</h1>
</body>
</html>9.登录页面
10.登录成功页面
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