JDBC初体验

Posted 2020-10-27 song.yan

先导入mysql驱动jar包（或oracle

package songyan.jdbc.learn1;

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

import com.mysql.jdbc.Driver;




public class Demo1 {
//使用jdbc实现查询数据，并显示在控制台
    public static void main(String[] args) throws Exception {
        //注册驱动
        DriverManager.registerDriver(new Driver());
        //获取链接
        Connection conn=DriverManager.getConnection("jdbc:mysql://localhost:3306/day06", "root", "247418");
        //得到执行sql语句的对象
        Statement sta=conn.createStatement();
        //执行sql语句并返回结果
        ResultSet rs=sta.executeQuery("select * from users");        
        //处理结果
        while(rs.next())
        {
               System.out.println(rs.getObject(1)+" "+rs.getObject(2)+" "+rs.getObject(3)+" "+rs.getObject(4)+" "+rs.getObject(5));
        }
        //关闭资源
        rs.close();
        sta.close();
        conn.close();

    }

}

 

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