• jsp.6


    <%@ page contentType="text/html;charset=UTF-8" language="java"%>
    
    <html>
    <head>
    <title>登陆界面</title>
    <link rel="stylesheet" href="./layui/css/layui.css">
    <link rel="stylesheet" href="./css/adminLogin.css">
    </head>
    <body>
    
        <div class="wrap">
            <img src="img/1.jpg" class="imgStyle">
            <div class="loginForm">
                <form action="get.jsp" method="POST">
                    <div class="logoHead"></div>
                    <div class="usernameWrapDiv">
                        <div class="usernameLabel">
                            <label>用户名:</label>
                        </div>
                        <div class="usernameDiv">
                            <i class="layui-icon layui-icon-username adminIcon"></i> <input
                                id="loginUsername" class="layui-input adminInput" type="text"
                                name="name" placeholder="输入用户名">
                        </div>
                    </div>
                    <div class="usernameWrapDiv">
                        <div class="usernameLabel">
                            <label>密码:</label>
                        </div>
                        <div class="passwordDiv">
                            <i class="layui-icon layui-icon-password adminIcon"></i> <input
                                id="loginPassword" class="layui-input adminInput" type="password"
                                name="password" placeholder="输入密码">
                        </div>
                    </div>
                    <div class="usernameWrapDiv">
                        <div class="usernameLabel">
                            <label>验证码:</label>
                        </div>
                        <div class="cardDiv">
                            <input id="loginCard" class="layui-input cardInput" type="text"
                                name="card" placeholder="输入验证码">
                        </div>
                        <div id="code_box" class="codeDiv">xxxx</div>
                    </div>
                    <div class="usernameWrapDiv">
                        <div class="submitLabel">
                            <label>没有账号?<a href="#" id="loginRegister">点击注册</a> </label>
                        </div>
                        <div class="submitDiv">
                            <input id="loginBtn" type="submit"
                                class="submit layui-btn layui-btn-primary" value="登录"></input>
                        </div>
                    </div>
                </form>
            </div>
        </div>
    
        <script>
            var code_box = document.getElementById("code_box");
    
            function refreshCode() {
    
                var code = '0123456789qwertyuiopasdfghjklzxcvbnmQWERTYUIOPASDFGHJKLZXCVBNM', char = '', result = '';
    
                for ( var i = 0; i < 4; i++) {
    
                    var code_index = Math.round(Math.random() * 61);
    
                    var char = code[code_index];
    
                    if (result.toUpperCase().indexOf(char.toUpperCase()) > -1)
    
                    {
                        i--;
    
                        continue;
                    }
                    result += char;
                }
                code_box.innerHTML = result;
            }
    
            code_box.onclick = refreshCode;
        </script>
        <%
    String name="";
    if(!session.isNew()){
    name=(String)session.getAttribute("name");
    if (name==null){
    name="";
    }
    }
    %>
    </body>
    </html>
    复制代码
    复制代码
    <%@ page contentType="text/html;charset=UTF-8" language="java"%>
    <%@ page language="java" import="java.util.*"%>
    <%@ page import="java.sql.*"%>
    <html>
    <head>
    <title></title>
    </head>
    <body>
        <%--<%--%>
    
        <%--    String name=request.getParameter("name");--%>
        <%--    String password=request.getParameter("password");--%>
        <%--    if(name.equals("zs")&&password.equals("123")){--%>
        <%--%><p>welcome<%=name%></p><%--%>
        <%--}else{--%>
        <%--%><p>登陆失败</p><%--%>
        <%--    }--%>
        <%--%>--%>
        <%
            PreparedStatement pre = null;
            Statement sql;
            ResultSet rs;
            request.setCharacterEncoding("utf-8");
            String Name = request.getParameter("name");
            String Ps = request.getParameter("password");
            Name.trim();
            Ps.trim();
            request.setCharacterEncoding("utf-8");
    
            Class.forName("com.mysql.cj.jdbc.Driver");
    
            Connection conn = DriverManager.getConnection(
                    "jdbc:mysql://localhost:3306/jsp_db?serverTimezone=GMT",
                    "root", "135790");
            sql = conn.createStatement();
            String SQL = "select * from jsp_data where uname=? and upassword=?";
            pre = conn.prepareStatement(SQL);
            pre.setString(1, Name);
            pre.setString(2, Ps);
            rs = pre.executeQuery();
            if (rs.next()) {
                String name = rs.getString(1);
                session.setAttribute("name", name);
        %><p>
            欢迎登陆:<%=name%></p>
        <%
            } else {
        %>
        <p>输入错误,请重新登录</p>
        <a href="index.jsp"><button>返回登录界面</button>
        </a>
        <%
            }
            rs.close();
            sql.close();
            conn.close();
        %>
    
    </body>
    </html>
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  • 原文地址:https://www.cnblogs.com/wu-di-821-821/p/14649718.html
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