一、(MySQL)通过函数/存储过程

1、链接

https://www.jb51.net/article/207999.htm

https://blog.csdn.net/FloraCHY/article/details/117792903

2、代码

-- 进入数据库
use test;
-- 显示所有表
show tables;
-- 创建majors表
create table majors(id int, major varchar(255));
-- 定义结束符$
delimiter "$";
-- 创建存储过程,定义存储方法
create procedure batchInsert(in args int)
begin
declare i int default 1;
-- 开启事务(重要!不开的话,100w数据需要论天算)
start transaction;
while i <= args do
insert into majors(id,major) value(i,concat("软件工程-",i));
set i = i+ 1;
end while;
commit;
end
$-- 调用函数,生成数据
-- 先生成10w条试试,同时输入$, 回车执行
call batchInsert(100000);
$

3、性能

10000条数据用了0.9s

100000条，5s执行完

100w条数据用了58s

二、通过jdbc的批量插入语句(add/executeBatch)

1、链接

http://t.zoukankan.com/lizm166-p-7890168.html

2、代码

//获取要设置的Arp基准的List后,插入Arp基准表中    public boolean insertArpStandardList(List<ArpTable> list) {Connection conn = null;PreparedStatement ps = null;ResultSet rs = null;//MySql的JDBC连接的url中要加rewriteBatchedStatements参数，并保证5.1.13以上版本的驱动，才能实现高性能的批量插入。//优化插入性能，用JDBC的addBatch方法，但是注意在连接字符串加上面写的参数。//例如： String connectionUrl="jdbc:mysql://192.168.1.100:3306/test?rewriteBatchedStatements=true" ;String sql = "insert into arp_standard(guid, devicebrand, devicename, deviceip, ipaddress, " +"macaddress, createtime) values(?,?,?,?,?,?,?)";try{conn = DBConnection.getConnection();ps = conn.prepareStatement(sql);//优化插入第一步设置手动提交  conn.setAutoCommit(false); int len = list.size();for(int i=0; i<len; i++) {ps.setString(1, list.get(i).getGuid());ps.setString(2, list.get(i).getDeviceBrand());ps.setString(3, list.get(i).getDeviceName());ps.setString(4, list.get(i).getDeviceIp());ps.setString(5, list.get(i).getIpAddress());ps.setString(6, list.get(i).getMacAddress());ps.setString(7, list.get(i).getCreateTime());//if(ps.executeUpdate() != 1) r = false;    优化后，不用传统的插入方法了。//优化插入第二步插入代码打包，等一定量后再一起插入。ps.addBatch(); //if(ps.executeUpdate() != 1)result = false;//每200次提交一次 if((i!=0 && i%200==0) || i==len-1){//可以设置不同的大小；如50，100，200，500，1000等等  ps.executeBatch();  //优化插入第三步提交，批量插入数据库中。conn.commit();  ps.clearBatch();//提交后，Batch清空。}}} catch (Exception e) {System.out.println("MibTaskPack->getArpInfoList() error:" + e.getMessage());return false;   //出错才报false} finally {DBConnection.closeConection(conn, ps, rs);}return true;}

三、通过多线程执行jdbc过程

1、链接

http://t.zoukankan.com/fangts-p-6813515.html

2、代码

package tenThreadInsert;import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.PreparedStatement;
import java.sql.SQLException;
import java.util.Date;public class MyThread extends Thread{public void run() {String url = "jdbc:mysql://127.0.0.1/teacher"; String name = "com.mysql.jdbc.Driver"; String user = "root"; String password = "123456"; Connection conn = null; try {Class.forName(name);conn = DriverManager.getConnection(url, user, password);//获取连接 conn.setAutoCommit(false);//关闭自动提交，不然conn.commit()运行到这句会报错} catch (ClassNotFoundException e1) {e1.printStackTrace();} catch (SQLException e) {e.printStackTrace();}// 开始时间Long begin = new Date().getTime();// sql前缀String prefix = "INSERT INTO test_teacher (t_name,t_password,sex,description,pic_url,school_name,regist_date,remark) 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 <= 10; i++) {suffix = new StringBuffer();// 第j次提交步长for (int j = 1; j <= 100000; j++) {// 构建SQL后缀suffix.append("('" +i*j+"','123456'"+ ",'男'"+",'教师'"+",'www.bbb.com'"+",'Java大学'"+",'"+"2016-08-16 14:43:26"+"','备注'" +"),");}// 构建完整SQLString sql = prefix + suffix.substring(0, suffix.length() - 1);// 添加执行SQLpst.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("100万条数据插入花费时间 : " + (end - begin) / 1000 + " s"+"  插入完成");}
}测试代码package tenThreadInsert;public class Test {public static void main(String[] args) {for (int i = 1; i <=10; i++) {new MyThread().start();}}}

四、一次性插入多条记录

1、原理

MySQL：

INSERT INTO Persons (LastName, Address) VALUES ('Wilson', 'Champs-Elysees'),('Gates', 'Champs-Elysees')

Oracle：

insert into 表名 (字段1)

select '1' from dual

union all

select '2' from dual

2、代码

(1)调用

public static Boolean insertManyByOne(int num) {String sql = GenSqlUtil.genInsManySql(num);// System.out.println(sql);jdbcUtils.insertMany(sql);System.out.println("共插入" + num + "条数据");return true;}public static String genInsManySql(int num) {String sql = "INSERT INTO TEST.\"ABANK\"\n ";for (int i = 0; i < num; i++) {sql = sql.concat("select '1', 'CH', '9999', 'Zürcher Kantonalbank', " +"'ZKBKCHZZ80A', ' ', TO_DATE('2009-11-10 00:00:00', 'SYYYY-MM-DD HH24:MI:SS'), " +"TO_DATE('1599-12-31 00:00:00', 'SYYYY-MM-DD HH24:MI:SS'), " +"TO_DATE('2017-07-12 00:00:00', 'SYYYY-MM-DD HH24:MI:SS'), " +"'ADMIN', TO_DATE('1599-12-31 00:00:00', 'SYYYY-MM-DD HH24:MI:SS'), " +"'ADMIN', TO_TIMESTAMP('2021-04-23 08:54:05.000', 'SYYYY-MM-DD HH24:MI:SS:FF3'), " +"TO_TIMESTAMP('"+ dateFormat.format(calendar.getTime()) +"', 'SYYYY-MM-DD HH24:MI:SS:FF3'), " +"HEXTORAW('"+ RandNumGenUtil.genDefLenStr(15) +"') from dual");if (i != num -1) {sql = sql.concat("\n union all \n");}}return sql;}

(2)jdbcutils

package com.boulderaitech.utils;import java.sql.*;
import java.util.Arrays;public class JDBCUtil {private String user;private String pass;private String url;private Connection conn = null;//连接对象private ResultSet rs = null;//结果集对象private Statement sm = null;/*** 构造函数获得数据库用户名和密码** @param user* @param pass*/public JDBCUtil(String user, String pass) {this.user = user;this.pass = pass;this.url = "jdbc:oracle:thin:@//172.16.5.162:1521/helowin";}/*** 连接数据库** @return*/public Connection createConnection() {String sDBDriver = "oracle.jdbc.driver.OracleDriver";try {Class.forName(sDBDriver).newInstance();conn = DriverManager.getConnection(url, user, pass);} catch (Exception e) {System.out.println("数据库连接失败");e.printStackTrace();}return conn;}/*** 关闭数据库** @param conn*/public void closeConnection(Connection conn) {try {if (conn != null) {conn.close();}} catch (Exception e) {System.out.println("数据库关闭失败");e.printStackTrace();}}/*** 插入数据** @param insert 插入语句* @return*/public int insert(String insert) {conn = createConnection();//String insert = "insert into t_department values('D004','金融部')";int re = 0;try {conn.setAutoCommit(false);//事物开始sm = conn.createStatement();re = sm.executeUpdate(insert);if (re < 0) {               //插入失败conn.rollback();      //回滚sm.close();closeConnection(conn);return re;}conn.commit();            //插入正常sm.close();closeConnection(conn);return re;} catch (Exception e) {e.printStackTrace();}closeConnection(conn);return 0;}/*** 批量插入数据*/public int insertBatch(String[] sql) {conn = createConnection();//String insert = "insert into t_department values('D004','金融部')";int re = 0;try {conn.setAutoCommit(false);//事务开始sm = conn.createStatement();Arrays.stream(sql).forEach(x->{try {sm.executeUpdate(x);} catch (SQLException e) {e.printStackTrace();}});conn.commit();            //插入正常sm.close();closeConnection(conn);return re;} catch (Exception e) {e.printStackTrace();}closeConnection(conn);return 0;}/*** 查询语句* 返回结果集** @param select* @return*/public ResultSet selectSql(String select) {conn = createConnection();try {sm = conn.createStatement();rs = sm.executeQuery(select);return rs;} catch (Exception e) {e.printStackTrace();}return null;}/*** 根据结果集输出** @param rs*/public void printRs(ResultSet rs) {int columnsCount = 0;boolean f = false;try {if (!rs.next()) {return;}ResultSetMetaData rsmd = rs.getMetaData();columnsCount = rsmd.getColumnCount();//数据集的列数for (int i = 0; i < columnsCount; i++) {System.out.print(rsmd.getColumnLabel(i + 1) + "/n"); //输出列名}System.out.println();while (!f) {for (int i = 1; i <= columnsCount; i++) {//System.out.print(rs.getString(i)+"/t");//逻辑处理String name = rs.getString("NAME");System.out.print(rs.getString("NAME") + "/n");}System.out.println();if (!rs.next()) {f = true;}}rs.close();} catch (Exception e) {e.printStackTrace();}closeConnection(conn);}/*** 插入数据** @param update 更新语句* @return*/public int update(String update) {conn = createConnection();//String insert = "insert into t_department values('D004','金融部')";int re = 0;try {conn.setAutoCommit(false);//事物开始sm = conn.createStatement();re = sm.executeUpdate(update);if (re < 0) {               //插入失败conn.rollback();      //回滚sm.close();closeConnection(conn);return re;}conn.commit();            //插入正常sm.close();closeConnection(conn);return re;} catch (Exception e) {e.printStackTrace();}closeConnection(conn);return 0;}public int insertMany(String sql) {conn = createConnection();int re = 0;try {conn.setAutoCommit(false);//事物开始sm = conn.createStatement();re = sm.executeUpdate(sql);if (re < 0) {               //插入失败conn.rollback();      //回滚sm.close();closeConnection(conn);return re;}conn.commit();            //插入正常sm.close();closeConnection(conn);return re;} catch (Exception e) {e.printStackTrace();}closeConnection(conn);return 0;}
}

五、通过定时器实现定时执行

public static Boolean insertBatchFixTime(int numOfInsert, int timePerEpoch) {Timer timer = new Timer();timer.schedule(new TimerTask() {@Overridepublic void run() {insertManyByOne(numOfInsert);}}, 0L, timePerEpoch * 1000L);System.out.println("当前线程：" + Thread.currentThread().getName() + " 当前时间" + LocalDateTime.now());return true;}

六、通过循环实现批量插入

public static Boolean insertBatchFixCircle(int numOfEachInsert, int numOfEpoch) {LocalDateTime start = LocalDateTime.now();for (int i = 0; i < numOfEpoch; i++) {insertManyByOne(numOfEachInsert);}System.out.println("共插入" + numOfEachInsert * numOfEpoch+"条数据");LocalDateTime end = LocalDateTime.now();System.out.println("共耗时" + Duration.between(start, end).toMillis() + "ms");return true;}