新增验证文件格式

src/FileStorage/DefaultFileStorage.cs

@@ -198,8 +198,35 @@ public class DefaultFileStorage : IFileStorage, IScopeDependency
         if (!string.IsNullOrEmpty(fileName))
         {
             var dotPos = fileName.LastIndexOf('.');
+            if (dotPos==0)
+            {
+                throw UserFriendlyException.SameMessage("文件没有格式，请重新上传文件");
+            }
             ext = fileName.Substring(dotPos + 1);
         }
+        //TODO验证文件格式
+        var extList = new List<string>();
+        extList.Add("txt");
+        extList.Add("xls");
+        extList.Add("xlsx");
+        extList.Add("jpg");
+        extList.Add("jpeg");
+        extList.Add("png");
+        extList.Add("doc");
+        extList.Add("docx");
+        extList.Add("rar");
+        extList.Add("pdf");
+        extList.Add("mp3");
+        extList.Add("zip");
+        extList.Add("wmv");
+        extList.Add("mp4");
+        extList.Add("svg");
+        extList.Add("avi");
+        extList.Add("m4a");
+        if (!extList.Contains(ext))
+        {
+            throw UserFriendlyException.SameMessage("文件格式不正确，只能上传【doc,rar,jpg,pdf,mp3,xls,xlsx,zip,docx,wmv,mp4.png,svg,avijpeg.m4a.txt】格式文件");
+        }
         var filename = $"{Guid.NewGuid().ToString().Replace("-", string.Empty)}.{ext}";
         var fullPath = Path.Combine(fulldir, filename);
         using (var fileStream = File.Create(fullPath))