diff --git a/app/controllers/attachments_controller.rb b/app/controllers/attachments_controller.rb
index 79047b516..e9b767def 100644
--- a/app/controllers/attachments_controller.rb
+++ b/app/controllers/attachments_controller.rb
@@ -31,11 +31,11 @@ class AttachmentsController < ApplicationController
 
   def get_file
     normal_status(-1, "参数缺失") if params[:download_url].blank?
-    url = URI.encode(params[:download_url].to_s.gsub("http:", "https:"))
+    url = base_url.starts_with?("https:") ? URI.encode(params[:download_url].to_s.gsub("http:", "https:")) : URI.encode(params[:download_url].to_s)
     if url.starts_with?(base_url)
       domain  = GiteaService.gitea_config[:domain]
       api_url = GiteaService.gitea_config[:base_url]
-      url = url.split(base_url)[1].gsub("api", "repos").gsub('?filepath=', '/').gsub('&', '?')
+      url = ("/repos"+url.split(base_url + "/api")[1]).gsub('?filepath=', '/').gsub('&', '?')
       request_url = [domain, api_url, url, "?ref=#{params[:ref]}&access_token=#{current_user&.gitea_token}"].join
       response = Faraday.get(request_url)
       filename = url.to_s.split("/").pop()