JSP第八次作业

数据库test 中建个表 stu(stuid 主键自动增长，用户名，密码，年龄)

1.设计一个注册页面，实现用户注册功能
2.设计一个登陆页面，实现用户名密码登陆
3.两个页面可以互相超链接

<body>
<form method="post" action="zc.jsp">
    输入用户名：<input type="text" name="username"><br>
    输入年龄：<input type="text" name="userage"><br>
    输入密码：<input type="text" name="userpwd"><br>
    确认密码：<input type="text" name="cuserpwd"><br>
    <input type="submit" value="注册">
</form>
</body>

<body>
<form action="logoin_yz.jsp" method="post">
    用户名：<input type="text" name="username"><br>
    密码：<input type="password" name="userpwd" ><br>
    <input type="submit" value="登录">
</form>
</body>

<body>
<%
    //获取用户输入信息
    request.setCharacterEncoding("utf-8");
    String username=request.getParameter("username");
    String userpwd=request.getParameter("userpwd");
    Connection conn = null;
    Statement stmt = null;
    try {
        //连接驱动
        Class.forName("com.mysql.jdbc.Driver");
    } catch (ClassNotFoundException e) {
        e.printStackTrace();
    }
    //建立数据库连接
    String url = "jdbc:mysql://localhost:3306/bookstore_demo";
    //数据库账号
    String uname="root";
    //数据库密码
    String upwd="016205";

    try {
        conn = DriverManager.getConnection(url, uname, upwd);
        //创建发射器
        stmt = conn.createStatement();
        //创建sql语句
        String sql = "select*from bookstore_demo.yonghu where username='"+username+"' and userpwd='"+userpwd+"'";
        //发送sql语句并接收结果
        ResultSet rs = stmt.executeQuery(sql);
        if (rs.next()) {
            out.print("登陆成功");
        } else {
            out.print("登陆失败");
        }
        rs.close();
    }
    catch (SQLException e) {
        e.printStackTrace();
    }

%>
</body>

<body>
<%
    //获取用户输入信息
    request.setCharacterEncoding("utf-8");
    String username=request.getParameter("username");
    String userpwd=request.getParameter("userpwd");
    String userage=request.getParameter("userage");
    String cuserpwd=request.getParameter("cuserpwd");
    //判断两次密码是否相同
    if (cuserpwd.equals(userpwd)) {
        Connection conn = null;
        Statement stmt = null;
        try {
            //连接驱动
            Class.forName("com.mysql.jdbc.Driver");
        } catch (ClassNotFoundException e) {
            e.printStackTrace();
        }
        //建立数据库连接
        String url="jdbc:mysql://localhost:3306/bookstore_demo";
        //数据库账号
        String user="root";
        //数据库密码
        String upwd="016205";
        try {
            conn= DriverManager.getConnection(url,user,upwd);
            //创建发射器
            stmt=conn.createStatement();
            //创建sql语句
            String sql="insert into yonghu(username,userpwd) value ('"+username+"','"+userpwd+"')";
            //发送sql语句并接收结果
            int count = stmt.executeUpdate(sql);
            if (count>0){
                out.print("注册成功");
                out.print("<a href='logoin.jsp'>登录</a>");
            }
            else{
                out.print("注册失败");
            }
            //关闭资源
            stmt.close();
            conn.close();

        } catch (SQLException e) {
            e.printStackTrace();
        }
    }
    else {
        out.print("注册失败");
    }
%>
</body>

posted @ 2022-05-08 20:52 Vending 阅读(27) 评论(0) 收藏举报

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JSP第八次作业

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