fix savefile response

Helpers/YYUpload.cs

@@ -33,6 +33,12 @@ namespace YYApi.Helpers
             Env = env;
         }
 
+        public class FileResult
+        {
+            public string Path { get; set; }
+            public int Size { get; set; }
+        }
+
         /// <summary>
         /// 保存base64文件,如果有标头按照标头自动识别
         /// </summary>
@@ -41,7 +47,7 @@ namespace YYApi.Helpers
         /// <param name="path">存放路径</param>
         /// <param name="fileName">文件名</param>
         /// <returns></returns>
-        public string SaveFile(string base64, string ext = null, string path = null, string fileName = null)
+        public FileResult SaveFile(string base64, string ext = null, string path = null, string fileName = null)
         {
             byte[] bt;
             var filePath = FilePath + path;
@@ -76,7 +82,11 @@ namespace YYApi.Helpers
             }
             var fn = fileName + (string.IsNullOrEmpty(ext) ? string.Empty : $".{ext}");
             File.WriteAllBytes(realPath + fn, bt);
-            return filePath + fn;
+            return new FileResult
+            {
+                Path = filePath + fn,
+                Size = bt.Length
+            };
         }
     }
 }