PageUtil_给我一个苹果的博客_pageutil的使用

@Override
    public PageUtil getTrsWenduList(TrsWenduQueryReqVo trsWenduQueryReqVo) {
        if (trsWenduQueryReqVo.getPageNum()==null||trsWenduQueryReqVo.getPageSize()==null||trsWenduQueryReqVo.getPageNum()==0||trsWenduQueryReqVo.getPageSize()==0){
            return new PageUtil(trsWenduDao.getTrsWenduList(new Page(1,50),trsWenduQueryReqVo));
        }
        return new PageUtil(trsWenduDao.getTrsWenduList(new Page(trsWenduQueryReqVo.getPageNum(),trsWenduQueryReqVo.getPageSize()),trsWenduQueryReqVo));
    }
    ```
@Override
    public PageUtil getTrsWend