java连接mysql源码

import java.sql.;

import java.text.SimpleDateFormat;

import java.util.;

import java.util.Date;

import java.text.*;

import java.util.Calendar;

public class conn {

public static void main(String[] args) {

conn lm = new conn();

String t= lm.getStringDate();

try {

Class.forName("com.mysql.jdbc.Driver"); //加载MYSQL JDBC驱动程序

}

catch (Exception e) {

e.printStackTrace();

}

try {

Connection connect = DriverManager.getConnection("jdbc:mysql://localhost:3307/student","root","zhangyabiao");

//连接URL为 jdbc:mysql//服务器地址/数据库名 ，后面的2个参数分别是登陆用户名和密码

System.out.println("["+t+"]"+"成功连接数据库! ");

Statement stmt = connect.createStatement();

ResultSet rs = stmt.executeQuery("select * from zh");

//user 为你表的名称

while (rs.next()) {

System.out.println(rs.getString("n")+". "+rs.getString("n1")+" "+rs.getString("n2"));

}

System.out.println("["+t+"]"+"成功获得数据");

}

catch (Exception e) {

System.out.print("["+t+"]"+"获得数据失败");

e.printStackTrace();

}

}

public static String getStringDate() {

Date currentTime = new Date();

SimpleDateFormat formatter = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");

String dateString = formatter.format(currentTime);

return dateString;

}

}

/*

[2017-05-08 22:05:48]成功连接数据库!

......

[2017-05-08 22:05:48]成功获得数据

出现上面结果，说明你连接数据库成功。

*/