JDBC连接数据库

package com.hpe.service;

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

/**
 * 此类为数据库类
 * @author TWS
 *
 */
public class DBUtil {
    private String url="jdbc:mysql://localhost:3306/login";
    private String user="root";
    private String password="";

    public Connection getConnection() throws Exception{

        //jdbc 加载驱动
        Class.forName("com.mysql.jdbc.Driver");

        //获取连接对象
        Connection conn=DriverManager.getConnection(url,user,password);
        System.out.println("连接对象:"+conn);

        //获取执行sql语句的对象，statement
        Statement sta=conn.createStatement();

        //执行sql语句，获取结果集
        ResultSet rs=sta.executeQuery("select name,age from t_user");

        //遍历结果集
        while(rs.next()){
            String name=rs.getString("name");
            int age=rs.getInt("age");
            System.out.println("name=" + name + ";age=" + age);
        }

        //关闭连接
        rs.close();
        sta.close();
        conn.close();
        return null;
    }

    public static void main(String[] args) throws Exception{
        DBUtil dbUtil=new DBUtil();
        dbUtil.getConnection();
    }
}