关于mybatis-plus逻辑删除无效的问题

/**

      * 是否删除

      */

     @TableLogic (value = "0" , delval = "1" )

     @TableField (value = "del_flag" )

     private Boolean delFlag;

import com.baomidou.mybatisplus.core.injector.DefaultSqlInjector;

import com.baomidou.mybatisplus.core.injector.ISqlInjector;

import com.baomidou.mybatisplus.extension.plugins.PaginationInterceptor;

import com.fasterxml.jackson.databind.ObjectMapper;

import com.fasterxml.jackson.databind.module.SimpleModule;

import com.fasterxml.jackson.databind.ser.std.ToStringSerializer;

import org.mybatis.spring.annotation.MapperScan;

import org.springframework.context.annotation.Bean;

import org.springframework.context.annotation.Configuration;

import org.springframework.http.converter.json.Jackson2ObjectMapperBuilder;

/**

  * mybatis-plus配置

  **/

@Configuration

@MapperScan ({ "com.sjyf.gym.mapper.**" , "com.sjyf.gym.mapper" })

public class MybatisPlusConfig {

     /**

      * 分页插件

      */

     @Bean

     public PaginationInterceptor paginationInterceptor() {

         return new PaginationInterceptor();

     }

     /**

      * 分页

      * @param builder

      * @return

      */

     @Bean

     public ObjectMapper objectMapper (Jackson2ObjectMapperBuilder builder) {

         ObjectMapper objectMapper = builder.createXmlMapper( false ).build();

         SimpleModule simpleModule = new SimpleModule();

         // 直接将所有的Long类型转换为String

         simpleModule.addSerializer(Long. class , ToStringSerializer.instance);

         simpleModule.addSerializer(Long.TYPE, ToStringSerializer.instance);

         objectMapper.registerModule(simpleModule);

         return objectMapper;

     }

     /**

      * 逻辑删除

      * @return

      */

     @Bean

     public ISqlInjector sqlInjector(){

         return new DefaultSqlInjector();

     }

}