Ruby on Rails上传文件问题奇怪的utf8转换错误 [英] Ruby on Rails upload file problem odd utf8 conversion error

问题描述

 \xFFfrom ASCII- 8BIT到UTF-8 
  

我非常关注他们正在做的事情。这是我使用的代码。

$ p $ file = params [：uploaded_file]

File.open （Rails.root.join（'public'，'images'，file.original_filename），'w'）do | f |
f.write（file.read）
end


我不得到为什么它不起作用。更新 - 这是应用程序跟踪

  app / controllers / shows_controller.rb：16：在block中创建
 app / controllers / shows_controller.rb：15 ：在`open'
 app / controllers / shows_controller.rb：15：在`create'
  

为了避免编码问题在二进制模式下打开文件，所以你的模式应该是二进制的wb可写：

  File.open（Rails.root.join（'public'，'images'，file.original_filename），' wb'）do | f | 
 f.write（file.read）
 end 
  

I am trying to upload a file and i am getting the following error:

"\xFF" from ASCII-8BIT to UTF-8

I am pretty much following the rails guides in what they are doing. Here is the code I am using.

file = params[:uploaded_file]

File.open(Rails.root.join('public', 'images', file.original_filename), 'w') do |f|
  f.write(file.read)
end

I don't get why it doesn't work. What am I doing wrong?

Update -- Here is the application Trace

app/controllers/shows_controller.rb:16:in `write'
app/controllers/shows_controller.rb:16:in `block in create'
app/controllers/shows_controller.rb:15:in `open'
app/controllers/shows_controller.rb:15:in `create'

解决方案

I believe this is a change in how rails 3 works with ruby 1.9, since 1.9 supports encodings it will attempt to convert all strings to whatever encoding you have set in your app configuration (application.rb), typically this is 'utf-8'.

To avoid the encoding issue open the file in binary mode, so your mode would be 'wb' for binary writeable:

File.open(Rails.root.join('public', 'images', file.original_filename), 'wb') do |f|
  f.write(file.read)
end

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