java jdbc-向mysql中插入50000条数据怎么那么慢。。。

mysqljava jdbcsql数据

package cn.itcast.bath;

import java.sql.Connection;
import java.sql.PreparedStatement;

import org.junit.Test;

import cn.itcast.jdbc.JDBCUtils;

public class Bath {

@Testpublic void demo1(){    Connection conn=null;    PreparedStatement stat=null;    long start = System.currentTimeMillis();    try {        conn=JDBCUtils.getConnection();        String sql ="insert into person values(?,?,?)";        stat=conn.prepareStatement(sql);        for (int i = 1; i 

}