1.首先前台页面
登录页面
login.jsp
<%@ 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>Insert title here</title>
</head>
<body>
<form action="login" method="post">
username:<input type="text" name="username">
<br/>
password:<input type="text" name="password">
<br/>
<input type="submit" value="登录">
</form>
</body>
</html>登陆成功页面
success.jsp
<%@ 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>Insert title here</title>
</head>
<body>
Success！ welcome:${username}
</body>
</html>error.jsp
2.后台代码Contorller层接收前台的两种方式
方式一：
利用@RequestParam这个注解
传值能在路径中看见数据值（个人观点：类型post传参方式）
@Controller public class Login { //方式一 @RequestMapping("/login") public String login(@RequestParam("username") String username, @RequestParam("password") String password,Model model){ if (username.equals(password)) { model.addAttribute("username", username); return "success.jsp"; } else { return "error.jsp"; } } }
方式二：
传值能在路径中看见数据值（个人观点：类型get传参方式）
@Controller public class Login { //方式二 @RequestMapping("/login") public String login(String username,String password,Model model){ if (username.equals(password)) { model.addAttribute("username", username); return "success.jsp"; } else { return "error.jsp"; } } }