这节课我们来完善登录功能:


Login.jsp:

<%@ page contentType="text/html;charset=UTF-8" language="java" %>

<html>

<head>

    <title>登录</title>

</head>

<body style="text-align: center">

    <form style="margin-top: 100px;border: 1px solid black;text-align: center" action="/login" method="post">

        <input type="text" name="username" placeholder="用户名"><br><br>

        <input type="password" name="password" placeholder="密码"><br><br>

        <!-- 这里开始涉及jsp的知识了，下节课开始讲，先看看效果 -->

        <%

            if (request.getAttribute("errorMsg") != null)

            {

        %>

        <scan style="color: red"><%=request.getAttribute("errorMsg")%></scan><br>

        <%

            }

        %>

        <button type="submit">登录</button>

    </form>

</body>

</html>