springmvc关于@requestMapping和@requestParam的使用

package org.fkit.controller; import org.fkit.domain.User; import org.springframework.stereotype.Controller; import org.springframework.ui.Model; import org.springframework.web.bind.annotation.GetMapping; import org.springframework.web.bind.annotation.PostMapping; import org.springframework.web.bind.annotation.RequestMapping; import org.springframework.web.bind.annotation.RequestParam; import java.util.ArrayList; import java.util.List; @Controller @RequestMapping("/user") public class UserController { //静态List<User>集合，其代替数据库用来保存注册的用户信息 private static List<User> userList; public UserController() { super(); userList=new ArrayList<User>(); } @GetMapping(value="/register") public String registerForm() { System.out.println("register GET方法被调用。。。。。。"); return "registerForm"; } @PostMapping("/register") public String register( @RequestParam("loginname")String loginname, @RequestParam("password")String password, @RequestParam("username")String username) { System.out.println("register POST方法被调用。。。。。。"); User user=new User(); user.setLoginname(loginname); user.setPassword(password); user.setUsername(username); //模拟数据库存储User信息 userList.add(user); return "loginForm"; } @RequestMapping("/login") public String login( @RequestParam("loginname")String loginname, @RequestParam("password")String password, Model model) { System.out.println("登录名："+loginname+"密码："+password); //到集合中查找用户是否存在，此处用来模拟数据库验证 for(User user:userList) { if(user.getLoginname().equals(loginname)&&user.getPassword().equals(password)) { model.addAttribute("user", user); return "welcome"; } } return "loginForm"; } }