public async Task <MessageModel <PageModel <Topic> > > Get(int page = 1, string key = "", int intPageSize = 50) { if (string.IsNullOrEmpty(key) || string.IsNullOrWhiteSpace(key)) { key = ""; } Expression <Func <Topic, bool> > whereExpression = a => a.Id > 0; return(new MessageModel <PageModel <Topic> >() { msg = "获取成功", success = true, response = await _topicServices.QueryPage(whereExpression, page, intPageSize) }); }