Mybatis 打开连接池和关闭连接池性能对比

时间：2021-06-20 07:10:06

1  创建数据库表

-- phpMyAdmin SQL Dump

-- version 4.2.11

-- http://www.phpmyadmin.net

--

-- Host: localhost

-- Generation Time: 2016-08-02 18:13:50

-- 服务器版本： 5.6.21

-- PHP Version: 5.6.3

SET SQL_MODE = "NO_AUTO_VALUE_ON_ZERO";

SET time_zone = "+00:00";

/*!40101 SET @OLD_CHARACTER_SET_CLIENT=@@CHARACTER_SET_CLIENT */;

/*!40101 SET @OLD_CHARACTER_SET_RESULTS=@@CHARACTER_SET_RESULTS */;

/*!40101 SET @OLD_COLLATION_CONNECTION=@@COLLATION_CONNECTION */;

/*!40101 SET NAMES utf8 */;

--

-- Database: `mybatis`

--

-- --------------------------------------------------------

--

-- 表的结构 `Student`

--

CREATE TABLE IF NOT EXISTS `Student` (

`id` int(10) NOT NULL,

  `name` varchar(256) NOT NULL,

  `age` int(4) NOT NULL

) ENGINE=MyISAM AUTO_INCREMENT=2 DEFAULT CHARSET=latin1;

--

-- 转存表中的数据 `Student`

--

INSERT INTO `Student` (`id`, `name`, `age`) VALUES

(1, 'zhansan', 20);

--

-- Indexes for dumped tables

--

--

-- Indexes for table `Student`

--

ALTER TABLE `Student`

 ADD PRIMARY KEY (`id`);

--

-- AUTO_INCREMENT for dumped tables

--

--

-- AUTO_INCREMENT for table `Student`

--

ALTER TABLE `Student`

MODIFY `id` int(10) NOT NULL AUTO_INCREMENT,AUTO_INCREMENT=2;

/*!40101 SET CHARACTER_SET_CLIENT=@OLD_CHARACTER_SET_CLIENT */;

/*!40101 SET CHARACTER_SET_RESULTS=@OLD_CHARACTER_SET_RESULTS */;

/*!40101 SET COLLATION_CONNECTION=@OLD_COLLATION_CONNECTION */;

2.  测试代码如下

package mybatisInsertDataDemo;

import java.io.InputStream;

import org.apache.ibatis.session.SqlSession;

import org.apache.ibatis.session.SqlSessionFactory;

import org.apache.ibatis.session.SqlSessionFactoryBuilder;

import mybatisInsertDataDemo.Student;

import mybatisInsertDataDemo.demo;

public class demo {

	public static void main(String[] args) {

	    String resource = "mybatisInsertDataDemo/conf.xml";

		InputStream is = demo.class.getClassLoader().getResourceAsStream(resource);

		if(null == is)

		{

			System.out.println("inputstream is null");

			return;

		}

		 SqlSessionFactory sessionFactory = new SqlSessionFactoryBuilder().build(is);

	     long start = System.currentTimeMillis();

	     for(int i=0;i<10000;i++)

	     {

	    	 SqlSession session = sessionFactory.openSession();

		     String statement = "mybatisInsertDataDemo.studentMapper.insertStudent";

	    	  Student s = new Student();

		     s.setAge(20);

		     s.setName("lisi");

		     session.insert(statement, s);

		     session.close();

	     }

	     System.out.println("waste time  "+(System.currentTimeMillis()-start));

	}

}

　3.  打开与关闭连接池 配置

<?xml version="1.0" encoding="UTF-8"?>

<!DOCTYPE configuration PUBLIC "-//mybatis.org//DTD Config 3.0//EN" "http://mybatis.org/dtd/mybatis-3-config.dtd">

<configuration>

    <environments default="development">

        <environment id="development">

            <transactionManager type="JDBC" />

            <!-- 配置数据库连接信息 -->

            <dataSource type="UNPOOLED">  <!--UNPOOLED 是关闭连接池，POOLED 是打开连接池-->

                <property name="driver" value="com.mysql.jdbc.Driver" />

                <property name="url" value="jdbc:mysql://localhost:3306/mybatis" />

                <property name="username" value="root" />

                <property name="password" value="" />

            </dataSource>

        </environment>

    </environments>

    <mappers>

        <mapper resource="mybatisInsertDataDemo/studentMapper.xml"/>

    </mappers>

</configuration>

　　

4. 对比结果

插入一万条数据

打开连接池：  6s

关闭连接池：  36s

源码下载： http://download.csdn.net/detail/mtour/9594178

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