修改了请求来源的判断

app/controllers/application_controller.rb

@@ -1151,7 +1151,7 @@ class ApplicationController < ActionController::Base
 
   def user_login_and_from_openi
     url = request.referer.nil? ? Redmine::Configuration['educoder_domain'] : request.referer
-    flag = URI(url).host == 'localhost' && !current_user.logged?
+    flag = URI(url).host == URI(Redmine::Configuration['openi_domain']).host && !current_user.logged?
     logger.info "----------------------- #{url} -------------------------"
     logger.info "----------------------- #{URI(url).host} --------------------------"
     logger.info "----------------------- #{flag} -------------------------"