添加maven配置：

             
                 
      
       com.github.pagehelper
                  
      
       pagehelper
                  
      
       4.1.6
              
     

添加Bean:

//配置mybatis的分页插件pageHelper    @Bean    public PageHelper pageHelper(){        PageHelper pageHelper = new PageHelper();        Properties properties = new Properties();        //设置为true时，会将RowBounds第一个参数offset当成pageNum页码使用        properties.setProperty("offsetAsPageNum","true");        //设置为true时，使用RowBounds分页会进行count查询        properties.setProperty("rowBoundsWithCount","true");        //设置为true时，如果pageSize=0或者RowBounds.limit = 0就会查询出全部的结果        //properties.setProperty("pageSizeZero","true");        //禁用合理化，启用合理化时，如果pageNum<1会查询第一页，如果pageNum>pages会查询最后一页        properties.setProperty("reasonable","false");        //配置mysql数据库的方言        properties.setProperty("dialect","mysql");    //配置mysql数据库的方言        pageHelper.setProperties(properties);        return pageHelper;    }

SqlSessionFactory:

@Bean    public SqlSessionFactory sqlSessionFactory(@Qualifier("dataSource") DataSource dataSource,PageHelper pageHelper) throws Exception {        final SqlSessionFactoryBean sessionFactory = new SqlSessionFactoryBean();        sessionFactory.setDataSource(dataSource);        Resource[] mappers = (new PathMatchingResourcePatternResolver())                .getResources("classpath*:mybatis_mapper/*Mapper.xml");        sessionFactory.setMapperLocations(mappers);        sessionFactory.setPlugins(new Interceptor[]{pageHelper});        return sessionFactory.getObject();    }

应用：

public PageInfo
     
       selectListByParentKey(String parentKey){        PageHelper.startPage(2,3);        List
      
        list=mapper.selectListByParentKey(parentKey);        PageInfo
       
         pageInfo = new PageInfo<>(list);        return pageInfo;    }
       
      
     

封装返回的PageInfo

public class PageResult {    private ModelMapper modelMapper=SpringUtils.getBean(ModelMapper.class);    private PageInfo pageInfo;    private Class aClass;    public PageResult(PageInfo _pageInfo ){        this.pageInfo=_pageInfo;    }    /**     *     * @param _pageInfo  pageHelper的实例     * @param _aClass list输出类型，如果aClass不为空，就将list转换为aClass类型，反之则不进行转换     */    public PageResult(PageInfo _pageInfo,Class _aClass){      this.pageInfo=_pageInfo;      this.aClass=_aClass;    }    private Integer pageIndex;    private Integer pageSize;    private Long totalCount;    private Integer totalPages;    private List list;    public Integer getPageIndex() {        return pageInfo.getPageNum();    }    public Integer getPageSize() {        return pageInfo.getPageSize();    }    public Long getTotalCount() {        return pageInfo.getTotal();    }    public Integer getTotalPages(){        return pageInfo.getPages();    }    public List getList() {        List list= pageInfo.getList();        if(null!=aClass) {            List list2 = new ArrayList();            list.forEach(x -> {                list2.add(modelMapper.map(x, aClass));            });            return list2;        }else{            return list;        }    }}

调用：

PageHelper.startPage(request.getPageIndex(),request.getPageSize());        List
     
       list=dataDictBizFacade.selectListByCondition(request.getDictKey(),request.getDictDesc(),request.getParentKey());        PageResult result=new PageResult(new PageInfo<>(list),DataDictResponse.class);        response.setData(result);