diff --git a/Learun.Framework.Ultimate V7/Learun.Framework.Module/Learun.Application.Module/Learun.Application.TwoDevelopment/LR_Desktop/DataCollection/DataCollectionService.cs b/Learun.Framework.Ultimate V7/Learun.Framework.Module/Learun.Application.Module/Learun.Application.TwoDevelopment/LR_Desktop/DataCollection/DataCollectionService.cs
index 0beba6344..5886d116a 100644
--- a/Learun.Framework.Ultimate V7/Learun.Framework.Module/Learun.Application.Module/Learun.Application.TwoDevelopment/LR_Desktop/DataCollection/DataCollectionService.cs	
+++ b/Learun.Framework.Ultimate V7/Learun.Framework.Module/Learun.Application.Module/Learun.Application.TwoDevelopment/LR_Desktop/DataCollection/DataCollectionService.cs	
@@ -44,8 +44,8 @@ namespace Learun.Application.TwoDevelopment.LR_Desktop
         {
             try
             {
-                var refresh_token = _redis.Read<string>("refresh_token");
-                var access_token = _redis.Read<string>("access_token");
+                var refresh_token = _redis.Read<string>("refresh_token") == "null" ? "" : _redis.Read<string>("refresh_token");
+                var access_token = _redis.Read<string>("access_token") == "null" ? "" : _redis.Read<string>("access_token");
                 if (string.IsNullOrEmpty(refresh_token) || string.IsNullOrEmpty(_redis.Read<string>("access_token")))
                 {
                     //用户授权
@@ -75,7 +75,7 @@ namespace Learun.Application.TwoDevelopment.LR_Desktop
         private void login()
         {
             var login_url = InsUrl + "/prod-api/api/web/collect/oauth2/login?grant_type=password&client_id=" + client_id + "&username=" + username + "&password=" + password;
-            var login_res_str = HttpMethods.Get(login_url);
+            var login_res_str = HttpMethods.Post(login_url);
             var login_res = JsonConvert.DeserializeObject<InsResult>(login_res_str);
             var login_data = login_res.data;
             string access_token = ((dynamic)login_data)?.access_token;
@@ -95,7 +95,7 @@ namespace Learun.Application.TwoDevelopment.LR_Desktop
             var refresh_url =
                 InsUrl + "/prod-api/api/web/collect/oauth2/refresh?grant_type=refresh_token&client_id=" +
                 client_id + "&client_secret=" + client_secret + "&refresh_token=" + refresh_token;
-            var refresh_res_str = HttpMethods.Get(refresh_url);
+            var refresh_res_str = HttpMethods.Post(refresh_url);
             var refresh_res = JsonConvert.DeserializeObject<InsResult>(refresh_res_str);
             if (refresh_res == null || ((dynamic)refresh_res)?.code != 200)
             {