MybatisPlus性能分析插件

作用

用于输出每条sql语句执行的时间，便于优化sql语句

基于这几篇博客修改

[整合MybatisPlus测试]

[MybatisPlus自动填充时间]

[MybatisPlus乐观锁]

[MybatisPlus物理删除、逻辑删除]

MybatisPlusConfig 类配置sql分析插件

package com.xiang.config;



import com.baomidou.mybatisplus.extension.plugins.OptimisticLockerInterceptor;
import com.baomidou.mybatisplus.extension.plugins.PaginationInterceptor;
import com.baomidou.mybatisplus.extension.plugins.PerformanceInterceptor;
import org.mybatis.spring.annotation.MapperScan;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.context.annotation.Profile;

/**
 * Created by IntelliJ IDEA.
 * User: xiang
 * Date: 2021/10/23 0:07
 */

@Configuration
@MapperScan("com.xiang.mapper")
//添加扫描注解，写入mapper的路径，否则会找不到接口并报错
public class MybatisPlusConfig {
    //乐观锁插件
    @Bean
    public OptimisticLockerInterceptor OptimisticLockerInterceptor() {
        return new OptimisticLockerInterceptor();
    }

    //分页插件
    @Bean
    public PaginationInterceptor paginationInterceptor() {

        return new PaginationInterceptor();
    }

    //逻辑删除插件
//    @Bean
//    public ISqlInjector sqlInjector(){
//        return new LogicSqlInjector();
//    }


    /**
     * Sql性能分析插件
     * 开发环境使用，上线项目不推荐使用
     *
     * @return
     */
    @Bean
    @Profile({"dev", "test"})//设置使用环境
    public PerformanceInterceptor performanceInterceptor() {
        PerformanceInterceptor performanceInterceptor = new PerformanceInterceptor();
        performanceInterceptor.setMaxTime(100);//ms值，超过此处的毫秒值则不执行
        performanceInterceptor.setFormat(true);
        return performanceInterceptor;
    }
}

开发环境介绍：

• dev:开发环境
• test:测试环境
• prod:生产环境（真正上线交给用户使用的环境）

application.yml 设置环境

spring:
  datasource:
    url: jdbc:mysql://localhost:3307/webapp1
    username: webapp1
    password: webapp1
    driver-class-name: com.mysql.cj.jdbc.Driver
    #设置当前环境：dev;test;prod
  profiles:
    active: dev
  #mybatis日志:添加后可以查看执行的sql语句
mybatis-plus:
  configuration:
    log-impl: org.apache.ibatis.logging.stdout.StdOutImpl

    #设置逻辑删除的值：1-已删除；0-没有删除
    #可自行设置值，但是一般不设置，1和0为默认值
#  global-config:
#    db-config:
#      logic-delete-value: 1
#      logic-not-delete-value: 0

测试类

package com.xiang;

import com.xiang.mapper.UserMapper;
import com.xiang.pojo.User;
import org.junit.jupiter.api.Test;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.boot.test.context.SpringBootTest;

import java.util.List;

/**
 * Created by IntelliJ IDEA.
 * User: xiang
 * Date: 2021/10/23 21:28
 */
@SpringBootTest
public class PerformanceAnalysis {

    @Autowired
    UserMapper userMapper;

    /**
     * MybatisPlus性能分析
     */

    @Test
    /**
     * 查所有
     */
    void findAll() {
        List<User> list = userMapper.selectList(null);
        for (User user : list) {
            System.out.println(user);
        }
    }
}

运行结果

JDBC Connection [HikariProxyConnection@2016442966 wrapping com.mysql.cj.jdbc.ConnectionImpl@40d52be7] will not be managed by Spring
==>  Preparing: SELECT id,username,sex,age,birthday,create_time,update_time,version,deleted FROM user WHERE deleted=0
==> Parameters: 
<==    Columns: id, username, sex, age, birthday, create_time, update_time, version, deleted
<==        Row: 1, xiang, 男, 18, 2021-10-03, null, null, null, 0
<==        Row: 559, 小向, 男, 18, 2021-10-04, null, null, null, 0
<==        Row: 602, admin, 女, 18, 2021-10-20, null, null, null, 0
<==        Row: 605, 小二, 女, 18, null, null, null, null, 0
<==        Row: 607, 小四, 女, 21, null, null, null, null, 0
<==        Row: 609, 小五, 女, 0, null, null, null, null, 0
<==        Row: 1451097869404868609, 向某, 男, 0, null, null, null, null, 0
<==        Row: 1451098975287668738, 周某, 男, 0, null, null, null, null, 0
<==      Total: 8
 Time：53 ms - ID：com.xiang.mapper.UserMapper.selectList
Execute SQL：
    SELECT
        id,
        username,
        sex,
        age,
        birthday,
        create_time,
        update_time,
        version,
        deleted 
    FROM
        user 
    WHERE
        deleted=0

Closing non transactional SqlSession [org.apache.ibatis.session.defaults.DefaultSqlSession@2c748a15]
User(id=1, username=xiang, sex=男, age=18, birthday=Sun Oct 03 00:00:00 CST 2021, createTime=null, updateTime=null, version=0, deleted=0)
User(id=559, username=小向, sex=男, age=18, birthday=Mon Oct 04 00:00:00 CST 2021, createTime=null, updateTime=null, version=0, deleted=0)
User(id=602, username=admin, sex=女, age=18, birthday=Wed Oct 20 00:00:00 CST 2021, createTime=null, updateTime=null, version=0, deleted=0)
User(id=605, username=小二, sex=女, age=18, birthday=null, createTime=null, updateTime=null, version=0, deleted=0)
User(id=607, username=小四, sex=女, age=21, birthday=null, createTime=null, updateTime=null, version=0, deleted=0)
User(id=609, username=小五, sex=女, age=0, birthday=null, createTime=null, updateTime=null, version=0, deleted=0)
User(id=1451097869404868609, username=向某, sex=男, age=0, birthday=null, createTime=null, updateTime=null, version=0, deleted=0)
User(id=1451098975287668738, username=周某, sex=男, age=0, birthday=null, createTime=null, updateTime=null, version=0, deleted=0)