mybatis-plus查询时---如何按照某个字段进行倒序排列呢?

使用 queryWrapper.orderByDesc 方法设置相应的字段
        即可实现指定字段排序

@ApiOperation(value="分页列表查询", notes="分页列表查询")
@GetMapping(value = "/list")
public Result<IPage<DietCharts>> queryPageList(DietCharts dietCharts,
                                  @RequestParam(name="pageNo", defaultValue="1") Integer pageNo,
                                  @RequestParam(name="pageSize", defaultValue="10") Integer pageSize,
                                  HttpServletRequest req) {
       QueryWrapper<DietCharts> queryWrapper = QueryGenerator.initQueryWrapper(dietCharts, req.getParameterMap());
       Page<DietCharts> page = new Page<DietCharts>(pageNo, pageSize);
       queryWrapper.orderByDesc("create_time");
       List<DietCharts> list = dietChartsService.list(queryWrapper);
       Collections.sort(list, (o1, o2) -> o2.getSignInPoints().compareTo(o1.getSignInPoints()));
       Page<DietCharts> pageResult = new Page<>(pageNo, pageSize, page.getTotal());
       pageResult.setRecords(list);
       IPage<DietCharts> pageList = pageResult;
//     IPage<DietCharts> pageList = dietChartsService.selectList(pageNo,pageSize,dietCharts);
       return Result.OK(pageList);
}