zoukankan      html  css  js  c++  java
  • jdbc连接模拟用户登陆密码判断

    package com.aaa.demo1;
    
    import com.aaa.utils.JdbcUtils;
    
    import java.sql.Connection;
    import java.sql.PreparedStatement;
    import java.sql.ResultSet;
    import java.sql.SQLException;
    import java.util.Scanner;
    
    public class DemoLogin {
        public static void main(String[] args) throws SQLException {
            Scanner sc=new Scanner(System.in);
            System.out.println("请输入用户名:");
            String name = sc.nextLine();
            System.out.println("请输入密码:");
            String pwd = sc.nextLine();
            login(name,pwd);
        }
        //登陆方法
        public static void login(String name,String password) throws SQLException {
            Connection conn = JdbcUtils.getConnection();
            //1编辑SQL语句
            String sql="select * from users where uname=? and uage=?";
            PreparedStatement pre = conn.prepareStatement(sql);
            pre.setString(1,name);
            pre.setString(2,password);
            ResultSet rs = pre.executeQuery();
            if(rs.next()){
                System.out.println("登陆成功!");
            }else{
                System.out.println("登陆失败");
            }
            //关闭资源
            JdbcUtils.close(rs,pre,conn);
        }
    
    }
    

      

  • 相关阅读:
    timerfd与eventfd
    boost--asio
    boost--线程
    boost--线程同步
    C++11--lambda表达式
    Java数据类型中String、Integer、int相互间的转换
    Jsoup网页抓取
    线程池
    Java
    用cmd来向mysql导入sql文件
  • 原文地址:https://www.cnblogs.com/yanpingping/p/10646110.html
Copyright © 2011-2022 走看看