spring MVC 简单登陆例子

package com.demo.action; import org.springframework.stereotype.Controller; import org.springframework.ui.Model; import org.springframework.web.bind.annotation.RequestMapping; import org.springframework.web.bind.annotation.RequestParam; import com.demo.entity.User; @Controller @RequestMapping("/login") public class LoginController { @RequestMapping("/toLogin") public String toLogin(User usr,Model model){ System.out.println(usr.getPassword()); System.out.println(usr.getUserName()); model.addAttribute("user", usr.getUserName()); if(usr.getUserName().equals(usr.getPassword())){ return "success"; }else{ return "error"; } } }