jsp第七周作业

用户表： uid (主键，自动增长) uname upwd

使用分层实现注册。（必做）

使用分层实现登录。（选做）

index.jsp

<%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%>
<%
String path = request.getContextPath();
String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/";
%>

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
  <head>
    <base href="<%=basePath%>">
    
    <title>My JSP 'index.jsp' starting page</title>
    <meta http-equiv="pragma" content="no-cache">
    <meta http-equiv="cache-control" content="no-cache">
    <meta http-equiv="expires" content="0">    
    <meta http-equiv="keywords" content="keyword1,keyword2,keyword3">
    <meta http-equiv="description" content="This is my page">
    <!--
    <link rel="stylesheet" type="text/css" href="styles.css">
    -->

  </head>
  
  
  <body>
    <form name="form1" method="post" action="control.jsp" >
        <table>
        <tr>    
            <td>编号：</td>
                <td> <input type="text" name="sid" id="userName"  ></td>
            </tr>
            <tr>    
                <td>用户名：</td>
                <td> <input type="text" name="uname" id="userName"  ></td>
            </tr>
            <tr>    
                 <td>输入登录密码：</td>
                <td><input type="password" name="upwd" id="pwd"></td>
            </tr>
            
            <tr>    
                <td colspan="2"><input type="submit" value="注册" ></td>
                <td colspan="2" style=""><input type="submit" value="登录" ></td>
            </tr>
        </table>
    </form>
  </body>
</html>

control.jsp

<%@page import="com.mfb.dao.StuDao"%>
<%@page import="com.mfb.bean.Stu"%>
<%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%>
<%
    Stu s = new Stu();
    int id = Integer.parseInt(request.getParameter("sid"));
    s.setUid(id);
    String uname = request.getParameter("uname");
    s.setUname(uname);
    String upwd = request.getParameter("upwd");
    s.setUpwd(upwd);

    StuDao sd = new StuDao();
    if (sd.addStu(s) > 0) {
        //跳转注册成功页面 
        out.print("注册成功");
    } else {
        //错误页面 
        out.print("注册失败，请重新输入");
    }

    
%>

Stu.java

package com.mfb.bean;

public class Stu {
    private int uid;
    private String uname;
    private String upwd;

    // 访问器
    public int getUid() {
        return uid;
    }

    public void setUid(int uid) {
        this.uid = uid;
    }

    public String getUname() {
        return uname;
    }

    public void setUname(String uname) {
        this.uname = uname;
    }

    public String getUpwd() {
        return upwd;
    }

    public void setUpwd(String upwd) {
        this.upwd = upwd;
    }

    // 构造器
    public Stu(int uid, String uname, String upwd) {
        super();
        this.uid = uid;
        this.uname = uname;
        this.upwd = upwd;
    }

    public Stu() {
        super();
    }

}

StuDao.java

package com.mfb.dao;

import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.PreparedStatement;

import com.mfb.bean.Stu;


public class StuDao {
    // 学生数据访问类

    // 添加学生
    public int addStu(Stu s) {
        int i = 0;

        try {
            // 加载驱动
            Class.forName("com.mysql.jdbc.Driver");
            // 建立连接
            Connection con = DriverManager.getConnection(
                    "jdbc:mysql://localhost:3306/log", "root", "421317");
            // 写SQL语句
            String sql = "insert into stu values(?,?,?)";
            // 执行
            PreparedStatement ps = con.prepareStatement(sql);
            ps.setInt(1, s.getUid());
            ps.setString(2, s.getUname());
            ps.setString(3, s.getUpwd());
            i = ps.executeUpdate();

        } catch (Exception e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }
        return i;

    }

    

}

posted on 2021-04-17 15:44 门凡博阅读(59) 评论(0) 编辑收藏举报