<!DOCTYPE html>
<html>
<head>
    <meta charset="UTF-8">
    <title>登录</title>
</head>
<body>
<h2>标准登录页面</h2>
<h3>表单登录</h3>
<form action="/authentication/form" method="post">
    <table>
        <tr>
            <td>用户名:</td>
            <td><input type="text" name="username" required></td>
        </tr>
        <tr>
            <td>密码:</td>
            <td><input type="password" name="password" required></td>
        </tr>
        <tr>
            <td>�