@Configuration  //标识配置类
public class MybatisPlusConfig {
    @Bean   //将自定义对象交给Spring容器管理
    public MybatisPlusInterceptor mybatisPlusInterceptor(){
        MybatisPlusInterceptor interceptor=new MybatisPlusInterceptor();
        interceptor.addInnerInterceptor(new PaginationInnerInterceptor(DbType.MARIADB));
        return interceptor;
    }
}