javajdbc-向mysql中插入50000条数据怎么那么慢。。。

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 <=50000; i++) {            stat.setInt(1, i);            stat.setString(2, "name"+i);            stat.setString(3, "email"+i);            stat.addBatch();            if(i%1000==0)            {                stat.executeBatch();                stat.clearBatch();            }        }    } catch (Exception e) {        e.printStackTrace();    }finally{        long end = System.currentTimeMillis();        System.out.println("执行时间:"+(end-start));        JDBCUtils.release(stat, conn);    }}

}