diff --git a/DataVAPI/UpAndDown/Sample.cs b/DataVAPI/UpAndDown/Sample.cs
index ad2bda2..f3a49bd 100644
--- a/DataVAPI/UpAndDown/Sample.cs
+++ b/DataVAPI/UpAndDown/Sample.cs
@@ -43,8 +43,7 @@ namespace DataVAPI.UpAndDown
             };
             AlibabaCloud.TeaUtil.Models.RuntimeOptions runtime = new AlibabaCloud.TeaUtil.Models.RuntimeOptions();
             AlibabaCloud.SDK.Iot20180120.Models.QueryDeviceFileListResponse resp = client.QueryDeviceFileListWithOptions(queryDeviceFileListRequest, runtime);
-            //AlibabaCloud.TeaConsole.Client.Log();
-            //;
+
             AlibabaCloudRes cloudRes= Tools.JsonToObjectTools<AlibabaCloudRes>(AlibabaCloud.TeaUtil.Common.ToJSONString(resp.ToMap()));
             cloudRes?.body?.Data?.FileSummary?.ForEach(fileSummary => 
             {
@@ -52,12 +51,43 @@ namespace DataVAPI.UpAndDown
                 if (_data != null)
                 {
                     _data.UtcCreatedOn = DateTime.Parse(_data.UtcCreatedOn).AddHours(8).ToString("yyyy-MM-dd HH:mm:ss");
+                    _data.DownloadUrl = CutStarStr(_data.DownloadUrl,"http://","https://"); 
                     retdata.Add(_data);
                 }
             });
             return retdata;
         }
-
+        /// <summary>  
+        /// 替换字符串起始位置(开头)中指定的字符串  
+        /// </summary>  
+        /// <param name="s">源串</param>  
+        /// <param name="searchStr">查找的串</param>  
+        /// <param name="replaceStr">替换的目标串</param>  
+        /// <returns></returns>  
+        public static string CutStarStr(string s, string searchStr, string replaceStr)
+        {
+            var result = s;
+            try
+            {
+                if (string.IsNullOrEmpty(result))
+                {
+                    return result;
+                }
+                if (s.Length < searchStr.Length)
+                {
+                    return result;
+                }
+                if (s.IndexOf(searchStr, 0, searchStr.Length, StringComparison.Ordinal) > -1)
+                {
+                    result = s.Substring(searchStr.Length);
+                }
+                return result;
+            }
+            catch (Exception e)
+            {
+                return result;
+            }
+        }
         public static QueryDeviceFileResponseBodyData FileQuery(string DeviceName,string FileId)
         {
             AlibabaCloud.SDK.Iot20180120.Client client = CreateClient("LTAI5tDbUDuCvqU5hP8ZpHHV", "SvNIRQuz3BQFEaC3PFSJdgpeOKWFRi");