springboot引入mybatis-plus

青旅半醒 2022-10-22 02:47 146阅读 0赞

1.引入mybatis-plus的依赖包(不要看网上其他的依赖  引入3个依赖  都是瞎扯淡) 直接用我的  完全ojbk2

<dependency>
       <groupId>com.baomidou</groupId>
       <artifactId>mybatis-plus-boot-starter</artifactId>
       <version>3.0.3</version>
    </dependency>

2.使用@MapperScan启动类中添加扫描地址   当然目前是全局引入 也是最通用   你也可以在每个Mapper接口上面添加@Mapper注解

/**
     * @author peanut
     * @date 20210329
     */
    @SpringBootApplication
    @MapperScan("com.peanut.dao")
    public class SpringbootElementApplication {
    
    	public static void main(String[] args) {
    		SpringApplication.run(SpringbootElementApplication.class, args);
    	}
    }

3.然后在咱们dao  service 两层分别继承mybatisplus的基类   就像下面这样

// dao
    public interface SysUserMapper extends BaseMapper<SysUser> {}
    // service
    public interface SysUserService extends IService<SysUser> {}
    // serviceImpl
    public class SysUserServiceImpl extends ServiceImpl<SysUserMapper, SysUser> implements SysUserService{}

4.如果要使用分页插件  那我们还需要配置 分页插件   非常简单  直接粘贴拿去  如下

@EnableTransactionManagement
    @Configuration
    @MapperScan("com.peanut.dao")
    public class MybatisPlusConfig {
        /**
         *   mybatis-plus分页插件
         */
        @Bean
        public PaginationInterceptor paginationInterceptor() {
            PaginationInterceptor page = new PaginationInterceptor();
            // 设置方言
            page.setDialectType("mysql");
            return page;
        }
    }

>  @EnableTransactionManagement   记得开启事务管理器啊

5.再来看下 配置文件

mybatis-plus:
      type-aliases-package: com.peanut.entity
      mapper-locations: classpath:mappers/*Mapper.xml
      configuration:
        map-underscore-to-camel-case: true
        log-impl: org.apache.ibatis.logging.stdout.StdOutImpl

至此  配置完成   大佬们  赶快试试吧

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl8zNzAxMjg4MQ_size_16_color_FFFFFF_t_70][]

[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl8zNzAxMjg4MQ_size_16_color_FFFFFF_t_70]: /images/20221022/7de10aca20ba45e0ab9a29289099d283.png