修复列表展示问题

Yi.Framework.Net6/Yi.Framework.ApiMicroservice/Controllers/ArticleController.cs

@@ -50,7 +50,7 @@ namespace Yi.Framework.ApiMicroservice.Controllers
         public override Task<Result> Add(ArticleEntity entity)
         {
             //如果标题为空，默认为内容的前20个字符
-            entity.Title = entity.Title ?? entity.Content.Substring(0, 20);
+            entity.Title = string.IsNullOrEmpty(entity.Title) ? entity.Content.Substring(0, 20): entity.Title;
             entity.UserId = HttpContext.GetUserIdInfo();
             return base.Add(entity);
         }