SpringBoot搭建一个简单员工管理系统 (3) 登录功能实现

编写登录控制类

由于还没有加入数据库 默认密码123456成功

package com.jie.controller;

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 org.springframework.web.bind.annotation.ResponseBody;

@Controller
public class LoginController {
    @RequestMapping("/usr/login")
    public String login(@RequestParam("username") String username, @RequestParam("password") String password, Model model){
        //具体的业务:
        if("123456".equals(password)){
            return "dashboard";
        }
        else {
            model.addAttribute("msg","用户名密码错误!");
            return "index";
        }
    }
}

在index.html插入这句话使得登录失败显示信息

`<p style="color: red" th:text="${msg}" th:if="${not #strings.isEmpty(msg)}"></p>`