Ruby Rails，jQuery，Uploadify - 奇怪的UTF-8錯誤

Question

我在我的Rails應用程序（帶有uploadify-rails插件）中設置了jQuery和Uploadify。它一切正常，閃存加載，真實性參數與會話密鑰一起通過，等等。然而，我的MySQL查詢處理從閃存上傳的方式都報告「多餘的UTF-8序列」錯誤。沒關係的SQL似乎什麼要，只是第一個叫做獲得誤差：

Processing RoomsController#update to json (for 86.162.102.136 at 2010-04-26 11:27:55) [PUT] 
Parameters: {"Filename"=>"fb-logo.png", "_myapp_session"=>"BAh7CzoPc2Vzc2lvbl9pZCIlY2I5N2FjYjQ4ZjcwMmQzMzQxMjIwMmRmN2EwM2ZhZWM6EWludmFsaWRfdXNlckY6EF9jc3JmX3Rva2VuIjEzSWtvaGJrWDNhQXV6OGtuUllyMmdhbkVnR3JKV2QrM3RrVVJZaTJiak1vPToQam9pbl9zb3VyY2UiN2h0dHA6Ly9iZXRhLmNyYXNocGFkZGVyLmNvbS9wcm9maWxlL2V4Y2VsbGVudGxhcmtzIgpmbGFzaElDOidBY3Rpb25Db250cm9sbGVyOjpGbGFzaDo6Rmxhc2hIYXNoewAGOgpAdXNlZHsAOgx1c2VyX2lkaQY=--52b594041395bf8cf5998859eb43c4ed82c74490", "format"=>"json", "folder"=>"/rooms/", "action"=>"update", "authenticity_token"=>"3IkohkX3aAuz8knRYr2ganEgGrJWd 3tkURYi2bjMo=", "_method"=>"PUT", "id"=>"2120", "Upload"=>"Submit Query", "fileext"=>"*.jpg;*.jpeg;*.gif;*.png", "controller"=>"rooms", "room"=>{"photo_uploads"=>#<File:/tmp/RackMultipart20100426-1152-12dn5rn-0>}} 
    [4;36;1mUser Load (0.0ms)[0m [0;1mArgumentError: redundant UTF-8 sequence: SELECT * FROM `users` WHERE (`users`.`id` = 1) LIMIT 1[0m 

ActiveRecord::StatementInvalid (ArgumentError: redundant UTF-8 sequence: SELECT * FROM `users` WHERE (`users`.`id` = 1) LIMIT 1): 
lib/authenticated_system.rb:109:in `login_from_session' 
lib/authenticated_system.rb:12:in `current_user' 
app/controllers/application_controller.rb:296:in `setup_page_titles' 
lib/redis_db_logging.rb:18:in `enable_redis_logging' 
lib/redis_logger.rb:43:in `redisize' 
lib/redis_logger.rb:42:in `redisize' 
lib/redis_db_logging.rb:11:in `enable_redis_logging' 
haml (2.2.2) lib/sass/plugin/rails.rb:19:in `process_without_compass' 
/home/crashpaddernew/.gem/ruby/1.8/gems/chriseppstein-compass-0.8.8/lib/compass/app_integration/rails/action_controller.rb:7:in `process' 
/dh/passenger/lib/phusion_passenger/rack/request_handler.rb:91:in `process_request' 
/dh/passenger/lib/phusion_passenger/abstract_request_handler.rb:206:in `main_loop' 
/dh/passenger/lib/phusion_passenger/railz/application_spawner.rb:376:in `start_request_handler' 
/dh/passenger/lib/phusion_passenger/railz/application_spawner.rb:334:in `handle_spawn_application' 
/dh/passenger/lib/phusion_passenger/utils.rb:182:in `safe_fork' 
/dh/passenger/lib/phusion_passenger/railz/application_spawner.rb:332:in `handle_spawn_application' 
/dh/passenger/lib/phusion_passenger/abstract_server.rb:351:in `__send__' 
/dh/passenger/lib/phusion_passenger/abstract_server.rb:351:in `main_loop' 
/dh/passenger/lib/phusion_passenger/abstract_server.rb:195:in `start_synchronously' 
/dh/passenger/lib/phusion_passenger/abstract_server.rb:162:in `start' 
/dh/passenger/lib/phusion_passenger/railz/application_spawner.rb:213:in `start' 
/dh/passenger/lib/phusion_passenger/spawn_manager.rb:261:in `spawn_rails_application' 

有誰知道一個「多餘的UTF-8序列」錯誤是什麼，以及爲什麼請求來自未來閃光上傳正在造成它？或者JSON有問題嗎？

Answer 1

我相信你遇到了這個錯誤：

https://rails.lighthouseapp.com/projects/8994/tickets/1112-redundant-utf-8-sequence-in-stringto_json

似乎未能從會議呼叫您的身份驗證，也許你的會話密鑰具有在bug報告中提到的人物。

Answer 2

如果其他人瘋狂搜索「多餘的UTF-8序列」（可能是因爲您試圖將Excel文檔上傳到Rails應用程序），請讓我爲您節省一些髮際線。

A fix has been implemented in the 3-2-stable branch of rails，但尚未發佈。爲了得到這個善良到您自己的應用程序，只需創建這個文件：

module ActiveSupport::JSON::Encoding 
    def self.escape(string) 
    if string.respond_to?(:force_encoding) 
     string = string.encode(::Encoding::UTF_8, :undef => :replace).force_encoding(::Encoding::BINARY) 
    end 
    json = string.gsub(escape_regex) { |s| ESCAPED_CHARS[s] } 
    json = %("#{json}") 
    json.force_encoding(::Encoding::UTF_8) if json.respond_to?(:force_encoding) 
    json 
    end 
end 

...並且一定要require它。之後你應該很好走。

Answer 3

不幸的補丁恢復on Rails的3.2.14 https://github.com/rails/rails/commit/c910388587220e962682b0b9187e79b8f1641c17