微信登录问题

app/services/oauth/create_or_find_wechat_account_service.rb

@@ -24,7 +24,16 @@ class Oauth::CreateOrFindWechatAccountService < ApplicationService
       new_user = true
       # 新用户
       login = User.generate_login('w')
-      @user = User.new(login: login, nickname: result['nickname'].force_encoding('UTF-8'), type: 'User', status: User::STATUS_ACTIVE)
+      cd = CharDet.detect(result['nickname'])
+      Rails.logger.info "encoding: #{cd['encoding']} confidence: #{cd['confidence']}"
+      # 字符编码问题，GB18030编码识别率不行
+      decode_content =
+          if cd["encoding"] == 'GB18030' && cd['confidence'] > 0.8
+            result['nickname'].encode('UTF-8', 'GBK', {:invalid => :replace, :undef => :replace, :replace => ' '})
+          else
+            result['nickname'].force_encoding('UTF-8')
+          end
+      @user = User.new(login: login, nickname: decode_content, type: 'User', status: User::STATUS_ACTIVE)
     end
 
     ActiveRecord::Base.transaction do