public ActionResult <ReplyModel> Add([FromBody] CategoryParam msg) { ReplyModel replyModel = new ReplyModel(); Expression <Func <Category, bool> > func = w => w.Title == msg.Title; CategoryDto category = CategoryDto.GetCategoryInfo(_categoryQuery, msg.Title); if (category == null) { Category.Add(_categoryRepository, msg.Title, msg.Description); bool result = ServiceProvider.GetService <IUnitOfWork>().Commit(); if (result) { replyModel.Status = "002"; replyModel.Msg = "添加标题成功"; } else { replyModel.Msg = "添加标题失败"; } } else { replyModel.Msg = "该分类已经存在"; } return(replyModel); }