IDEA简单实现登录注册页面

application.yml

spring:
 datasource:
  username: root
  password: 123456
  url: jdbc:mysql://localhost:3306/bd1906?serverTimezone=GMT%2B8
  driver-class-name: com.mysql.cj.jdbc.Driver
server:
  port: 8080

Controller层

@Controller
public class loginController {

  @Autowired
  private JdbcTemplate jdbcTemplate;

  @RequestMapping("/index")
  public String border(){
    return "/index.html";
  }

  @RequestMapping("/login")
  public String getUserFront(){
    return "/login.html";
  }

  @RequestMapping(value = "/log",method = RequestMethod.POST)
  @ResponseBody
  public String log(String name,String psd){
    String sql = "select * from user where username = '"+ name +"' and password = '"+psd+"'";
    List<Map<String,Object>> list = jdbcTemplate.queryForList(sql);
    if(list.size() == 0){
      return "0";
    }
    else{
      return "1";
    }
  }
}

登录页面

<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8">
  <script src="./js/jquery-3.4.1.min.js"></script>
  <title>login</title>
  <style>
    html,body{
      width: 100%;height: 100%;margin: 0;padding: 0;
    }
    body{
      background-image: url('./img/bg1.jpg');
      background-size: 100% 100%;
      background-repeat: no-repeat;
    }
    /* 标题 */
    .head{color: whitesmoke;font-size: 30px;text-align: center;margin-top: 10px;margin-bottom: 10px;}
    /* 刀盘图片 */
    .cutter{text-align: center;margin-bottom: 10px;}
    body .login_fields {
      margin-top: 40px;
      margin-left: 45%;
      height: 208px;
      position: absolute;
      left: 0;
    }
    body .login_fields .icon {
      position: absolute;
      z-index: 1;
      left: 36px;
      top: 8px;
      opacity: .5;
    }
    body .login_fields input[type='password'],body .login_fields input[type='text'] {
      color: #61BFFF !important;
    }
    body .login_fields input[type='text'], body .login_fields input[type='password'] {
      color: #afb1be;
      width: 190px;
      margin-top: -2px;
      background: rgba(57, 61, 82, 0);
      left: 0;
      padding: 10px 65px;
      border-top: 2px solid rgba(57, 61, 82, 0);
      border-bottom: 2px solid rgba(57, 61, 82, 0);
      border-right: none;
      border-left: none;
      outline: none;
      font-family: 'Gudea', sans-serif;
      box-shadow: none;
    }
    body .login_fields__user, body .login_fields__password {
      position: relative;
    }
    body .login_fields__submit {
      position: relative;
      top: 17px;
      left: 0;
      width: 80%;
      right: 0;
      margin: auto;
    }
    body .login_fields__submit .forgot a {
      color: #606479;
    }
    body .login_fields__submit input {
      border-radius: 50px;
      background: transparent;
      padding: 10px 50px;
      border: 2px solid #4FA1D9;
      color: #4FA1D9;
      text-transform: uppercase;
      font-size: 11px;
      -webkit-transition-property: background,color;
      transition-property: background,color;
      -webkit-transition-duration: .2s;
      transition-duration: .2s;
    }
    body .login_fields__submit input:focus {
      box-shadow: none;
      outline: none;
    }
    body .login_fields__submit input:hover {
      color: white;
      background: #4FA1D9;
      cursor: pointer;
      -webkit-transition-property: background,color;
      transition-property: background,color;
      -webkit-transition-duration: .2s;
      transition-duration: .2s;
    }
  </style>
</head>
<body>
<div class="head">
  智能互联装备协同管理平台
</div>
<div class="cutter">
  <img src="./img/cutter.png" alt="" id="img" width="450px" height="450px">
</div>
<div class='login_fields'>
  <div class='login_fields__user'>
    <div class='icon' >
      <img alt="" src='./img/user.png'>
    </div>
    <input id="userName" name="userName" placeholder='请输入用户名' maxlength="16" type='text' autocomplete="off" >
  </div>
  <div class='login_fields__password'>
    <div class='icon' >
      <img alt="" src='./img/lock.png'>
    </div>
    <input id="userPsd" name="userPsd" placeholder='请输入密码' maxlength="16" type='text' autocomplete="off" >
  </div>
  <div class='login_fields__submit'>
    <input type='button' value='登录' id="btLogin">
  </div>
</div>
</body>
</html>

<script type="text/javascript">
  //刀盘旋转
  var rotateVal = 0 // 旋转角度
  var InterVal // 定时器
  window.onload = function () {
    // 网页加载完成后即运行rotate函数
    rotate()
  }
  // 设置定时器
  function rotate () {
    InterVal = setInterval(function () {
      var img = document.getElementById('img')
      rotateVal += 1
      // 设置旋转属性(顺时针)
      img.style.transform = 'rotate(' + rotateVal + 'deg)'
      // 设置旋转时的动画 匀速0.1s
      img.style.transition = '0.1s linear'
    }, 100)
  }

  //判断及请求
  $(function () {
    $("#btLogin").click(function () {
      var name = $("#userName").val();
      var psd = $("#userPsd").val();
      console.log(name,psd);
      if (name == "" || name == null){
        alert("用户名不能为空!")
        return;
      }
      if (psd == "" || psd == null){
        alert("密码不能为空!")
        return;
      }
      $.ajax({
        type: "post",
        url: "/log",
        data: {name: name,psd: psd},
        success:function(data){
          if(data == "1"){
            window.location.href="./index" rel="external nofollow" ;
          }else{
            alert("登录失败,账号密码不匹配!")
          }
        }
      })
    })
  })
</script>