百万级数据插入

mysql版本：5.7

mysql配置: max_allowed_packet

查看max_allowed_packet

show VARIABLES like '%max_allowed_packet%'

设置大小

set global max_allowed_packet = 100*1024*1024

退出mysql，重新登录进去

show VARIABLES like '%max_allowed_packet%'

package cn.cgnb.epanda.bill.controller;

import cn.cgnb.common.utils.UUIDUtil;

import java.sql.Connection;

import java.sql.DriverManager;

import java.sql.SQLException;

import java.util.Date;

import java.sql.PreparedStatement;

/**

* @Author xianxiong

* @Date 2020/6/29

*/

public class test1 {

public static void main(String[] args) throws ClassNotFoundException, SQLException {

final String url = "jdbc:mysql:loadbalance://xx.xx.xx.xx:13306/dev_epanda?roundRobinLoadBalance=true&characterEncoding=utf-8&useSSL=false&serverTimezone=Asia/Shanghai";

final String name = "com.mysql.cj.jdbc.Driver";

final String user = "root";

final String password = "123456";

Connection conn = null;

Class.forName(name);//指定连接类型

conn = DriverManager.getConnection(url, user, password);//获取连接

if (conn != null) {

System.out.println("获取连接成功");

insert(conn);

} else {

System.out.println("获取连接失败");

}

}

public static void insert(Connection conn) {

// 开始时间

Long begin = new Date().getTime();

// sql前缀

String prefix = "INSERT INTO ep_owner_bill_detail(id, bill_id, bill_type, calc_date, community_id, unit_id, room_id, room_name, owner_name, rule_id, rule_name, start_value, end_value, price, rate, original_fee, actual_fee, start_date, end_date, car_number, payment_type, payment_date, ref_detail_id, delivery_id, comment, data_status, create_id, create_time, update_id, update_time) VALUES ";

try {

// 保存sql后缀

StringBuffer suffix = new StringBuffer();

// 设置事务为非自动提交

conn.setAutoCommit(false);

// 比起st，pst会更好些

PreparedStatement pst = (PreparedStatement) conn.prepareStatement(" ");//准备执行语句

// 外层循环，总提交事务次数

for (int i = 1; i <= 100; i++) {

suffix = new StringBuffer();

// 第j次提交步长

for (int j = 1; j <= 10000; j++) {

// 构建SQL后缀

long uuid = UUIDUtil.genSequenceUUID();

suffix.append("("+uuid+"," +"1111111" +","+"'"+"缴费"+"'"+","+"'"+"2020-11-30"+"'"+","+"388227987483869184"+","+"388227987483869184"+","+"388227987483869184"+ "," +"'"+ "6-1-201"+"'" + ","+"'"+"张强" + "'"+"," +"388227987483869184"+"," + "'"+"垃圾清洁费" + "'" +","+"null"+","+"null" +","+"6.0"+ ","+"1.0"+ ","+"6.0"+ ","+"6.0"+ ","+"'"+"2020-11-01"+ "'"+","+"'"+"2020-11-30"+"'"+ ","+"'"+"川A-9A876"+"'"+","+"'"+"支付宝"+"'"+","+"'"+"2020-11-30"+"'"+","+"388227987483869184"+","+"388227987483869184"+ ","+"'"+"2020-02-01~2020-02-29"+"'" + ","+"'"+"0"+"'"+","+"388227987483869184"+","+"'"+"2020-03-24 17:49:27"+"'"+","+"388227987483869184"+","+ "'"+"2020-03-24 17:49:27"+"'"+")"+",");

}

// 构建完整SQL

String sql = prefix + suffix.substring(0, suffix.length() - 1);

// 添加执行SQL

pst.addBatch(sql);

// 执行操作

pst.executeBatch();

// 提交事务

conn.commit();

// 清空上一次添加的数据

suffix = new StringBuffer();

}

// 头等连接

pst.close();

conn.close();

} catch (SQLException e) {

e.printStackTrace();

}

// 结束时间

Long end = new Date().getTime();

// 耗时

System.out.println("1000万条数据插入花费时间 : " + (end - begin) / 1000 + " s");

System.out.println("插入完成");

}

}