<!DOCTYPE html>
 <html lang="">
 <head>
     <meta  charset="UTF-8">
     <title>用户登录</title>
 </head>
 <body>
     <h1>登录</h1>
     <form  method="post">
         <label>
             <input  type="text"  name="username" >
         </label> <br>
         <label>
             <input  type="password" name="password" >
         </label><br>
         <input  type="submit" name="登录"><br>
       {{msg}}
     </form>
 </body>
 </html>



