mybatis-plus逻辑删除

概述

在公司项目中大多不会将数据直接删除，而是将数据进行逻辑删除，即加一个字段，0表示未删除，1表示删除。在查询的时候，and，0或1就行了，相关pom文件及配置文件在文章末尾给出

controller

@RequestMapping("/logicDelete")
    public Result logicDelete(int id){

       if (iTbBrandService.removeById(id)){

           return new Result("1","删除成功");

       }else {

           return new Result("2","删除失败");

       }

    }

这里的 iTbBrandService.removeById(id) 等效于调用baseMapper的deleteById()方法

看到了嘛，你在application中配置的logic-not-delete-value: 0就and进来的，找出的是未删除的数据，将它置为已删除标识1。记得数据库中deleted字段要有0的记录。

那么使用mybatis-plus的select是否也会有变化呐?

来看

@RequestMapping("/findAll")
    public List<TbBrand> testcontroller(){

            return iTbBrandService.list();

    }

它确实是and上了delete字段，并且查找未删除记录

application

server:
  port: 8081

spring:
  application:
    name: pinyougou-brand

  datasource:
    driver-class-name: com.mysql.jdbc.Driver
    url: jdbc:mysql://192.168.126.128:3306/pinyougoudb
    username: root
    password: root

mybatis-plus:
  global-config:
    db-config:
      logic-delete-value: 1
      logic-not-delete-value: 0
  mapper-locations: classpath*:com/pinyougou/brand/mapper/xml/*.xml

logging:
  level:
    com.pinyougou.brand: debug

pom

<dependencies>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter</artifactId>
            <version>2.3.0.RELEASE</version>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-test</artifactId>
            <scope>test</scope>
            <version>2.3.0.RELEASE</version>
        </dependency>
        <!--简化代码的工具包-->
        <dependency>
            <groupId>org.projectlombok</groupId>
            <artifactId>lombok</artifactId>
            <optional>true</optional>
            <version>1.18.12</version>
        </dependency>
        <!--mybatis-plus的springboot支持-->
        <dependency>
            <groupId>com.baomidou</groupId>
            <artifactId>mybatis-plus-boot-starter</artifactId>
            <version>3.1.1</version>
        </dependency>
        <!--mysql驱动-->
        <dependency>
            <groupId>mysql</groupId>
            <artifactId>mysql-connector-java</artifactId>
            <version>5.1.47</version>
        </dependency>
        <dependency>
            <groupId>com.alibaba</groupId>
            <artifactId>fastjson</artifactId>
            <version>1.2.49</version>
        </dependency>
    </dependencies>

本文地址：https://blog.csdn.net/weixin_40598838/article/details/108986302