Springboot-mybatisplus-solve the failure problem of paging component IPage

Springboot-mybatisplus-solve the failure problem of paging component IPage

background

The paging plug-in IPage of mybatisplus is very useful, whether it is based on @select annotation or XML-based, paging query can be realized; I don’t know if
there is any change in the code, and paging is not easy to use when using it -_-, because there is no Pagination conditions are injected, causing all results to be returned. Go directly to the solution without delving into it!

Add pagination interceptor

@Configuration
public class MybatisPlusConfig {
    @Bean
    public PaginationInterceptor paginationInterceptor(){
        PaginationInterceptor page = new PaginationInterceptor();
        page.setDbType(DbType.POSTGRE_SQL);//选择对应DB类型
        return page;
    }
}

IPage pagination use

mapper needs to inherit BaseMapper

@Repository
public interface XxxMapper extends BaseMapper<XxxMapper > {
    Page<XxxBo> selectAllByPage(IPage<XxxBo> page,@Param("keyword") String keyword);
}

XML configuration

  <select id="selectAllByPage" resultMap="BaseResultMap">
    select * from xx.xxx where  enable=1
    <if test="keyword != null">
      and (id ~* #{keyword} or name  ~* #{keyword} or  code ~* #{keyword})
    </if>
  </select>

service layer call

    @Override
    public Page<XxxBo> viewInfoPage(PageReq req) {
        IPage<XxxBo> page = new Page<>(req.getPage().getPage(),req.getPage().getSize());
        Page<XxxBo> list = xxxMapper.selectAllByPage(page,req.getKeyword());
        return list;
    }