java JDBC操作MySQL数据库

一,首先在MYSQL建立一个数据库,例如Geek99DB:

    create database Geek99DB;

    use Geek99DB;

    然后建立一个表CustomerTab:

    create table CustomerTab(id int primary key auto_increment,name varcahr(20),email varchar(20));

    显示表:

    show tables;

    添加元素:

    insert into CustomerTbl(name,email)values('tam','123@qq.com');

    显示元素:

    select *from CustomerTbl;

二,在ecplise下完成对数据库的获取:

首先,建立一个java项目,新建一个文件夹lab,将mysql-connector-java-5.1.22-bin.jar(JDBC的驱动程序,复制到此文件夹下,并添加到build path);

然后新建一个class文件,代码如下:

package jdbctest;

import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.sql.Statement;

public class test01 {

 public static void main(String[] args) {
  // TODO Auto-generated method stub

//加载JDBC驱动
  Connection conn=null;
  try {
   Class.forName("com.mysql.jdbc.Driver");
  } catch (ClassNotFoundException e) {
   // TODO Auto-generated catch block
   e.printStackTrace();
  }

//连接到特定的数据库对象
  try {
   conn=DriverManager.getConnection("jdbc:mysql://localhost:3306/Geek99DB","root","yuan");
  } catch (SQLException e) {
   // TODO Auto-generated catch block
   e.printStackTrace();
  }

//建立SQL语句对象,执行查询
  String sql="select id,name,email from CustomerTbl";
  try {
   Statement stmt =conn.createStatement();
   ResultSet rs=stmt.executeQuery(sql);

//处理结果集
   while(rs.next()){
    int id=rs.getInt(1);
    String name=rs.getString(2);
    String email=rs.getString(3);
    System.out.println(id+","+name+","+email);
   }
   
  } catch (SQLException e) {
   // TODO Auto-generated catch block
   e.printStackTrace();

//关闭数据连接
   if(conn!=null){
    try {
     conn.close();
    } catch (SQLException e) {
     // TODO Auto-generated catch block
     e.printStackTrace();
    }
   }
  }

 }

}


  }finally {

 

posted @ 2016-05-02 18:43  左岸繁华右岸殇  阅读(297)  评论(1编辑  收藏  举报