myibatis批量插入数据和通过循环批量插入数据对比

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1. 配置文件：



       
   

eterType="java.util.List" >

        insert into shop_setting(name,value)values
       
        (#{item.name},#{item.value})
       
   


   
        insert into shop_setting(name,value)values(#{name},#{value})
   




@SqlMapper
public interface SettingMapper{

        /**
     * 批量保存系统设置
     * @param setting
     */
    void saveBatch(List setting);

    /**
     * 保存系统设置
     * @param setting
     */
    void save(Setting setting);
}





package com.leimingtech.service.module.setting.dao;


import java.util.List;
import java.util.Map;

import org.apache.ibatis.annotations.Param;

import com.leimingtech.core.entity.base.Setting;

public interface SettingDao {

/**
* 保存系统设置
* @param setting
*/
void save(Setting setting);

/**
     * 保存系统设置
     * @param setting
     */
    void saveBatch(List setting);

}


package com.leimingtech.service.module.setting.dao.impl;

import com.leimingtech.core.entity.base.Setting;
import com.leimingtech.service.module.setting.dao.SettingDao;
import com.leimingtech.service.module.setting.dao.mapper.SettingMapper;
import org.springframework.stereotype.Service;

import javax.annotation.Resource;
import java.util.List;
import java.util.Map;

@Service("settingDao")
public class SettingDaoImpl  implements SettingDao {
    @Resource
    private SettingMapper settingMapper;

   /**
     * 保存系统设置
     * @param setting
     */
    @Override
    public void save(Setting setting){
        settingMapper.save(setting);
    }


   /**
     * 保存系统设置
     * @param setting
     */
    @Override
    public void saveBatch(List setting){
        settingMapper.saveBatch(setting);
    }
}






测试类：
package sgnctest;

import com.leimingtech.core.entity.base.Setting;
import com.leimingtech.core.filter.XSSSecurityManager;
import com.leimingtech.service.module.frontorganization.service.FrontOrganizationService;
import com.leimingtech.service.module.ncorg.service.CreNcOrgService;
import com.leimingtech.service.module.projectinfo.service.CreProjectInfoService;
import com.leimingtech.service.module.setting.service.SettingService;
import net.sf.json.JSONArray;
import org.apache.commons.lang3.StringEscapeUtils;
import org.apache.commons.lang3.StringUtils;
import org.apache.poi.hssf.usermodel.HSSFCell;
import org.apache.poi.hssf.usermodel.HSSFRow;
import org.apache.poi.hssf.usermodel.HSSFSheet;
import org.apache.poi.hssf.usermodel.HSSFWorkbook;
import org.apache.poi.poifs.filesystem.POIFSFileSystem;
import org.junit.After;
import org.junit.Before;
import org.junit.Test;
import org.springframework.beans.BeansException;
import org.springframework.context.support.ClassPathXmlApplicationContext;

import java.io.*;
import java.util.ArrayList;
import java.util.Calendar;
import java.util.List;
import java.util.UUID;

public class nctest {

private ClassPathXmlApplicationContext context = null;

@Before
public void before(){
context = new ClassPathXmlApplicationContext("context/applicationContext.xml");
// context.start();
}

/**
* 测试批量插入
*/
@Test
public void insertListBatch(){
System.out.println(context);
SettingService settingService = (SettingService)context.getBean("settingService");
// settingService.save("12345","45556");
List list = new ArrayList();
for (int i = 0; i <2000 ; i++) {
Setting setting = new Setting();
setting.setName("name"+i);
setting.setValue("value"+i);
list.add(setting);
}

long start = Calendar.getInstance().getTimeInMillis();
settingService.saveBatch(list);
long end = Calendar.getInstance().getTimeInMillis();

System.out.println("runtime:"+(end - start));

}

@Test
public void insertList(){
SettingService settingService = (SettingService)context.getBean("settingService");
List list = new ArrayList();
for (int i = 0; i <2000 ; i++) {
Setting setting = new Setting();
setting.setName("name"+i);
setting.setValue("value"+i);
list.add(setting);
}

long start = Calendar.getInstance().getTimeInMillis();
for(Setting setting:list){
settingService.save(setting.getName(),setting.getValue());
}
long end = Calendar.getInstance().getTimeInMillis();

System.out.println("runtime:"+(end - start));

}

}



结果比较：
测试结果：
批量插入2000条数据方法执行时间：455

循环调用插入2000条数据执行时间：102240

通过时间比较性能相差200多倍