rails中builder如何正确输出中文，

rails中builder如何正确输出中文？

xml.instruct! :xml, :version => "1.0", :encoding => "GB2312"

 headers['Content-Type'] = 'text/xml; character=GB2312'

这些都做了，但是输出总是乱码，不能正确输出中文。何故？

$KCODE = 'GB2312'
require 'jcode'

試試看？

呵呵。没有用啦。

在rails中么？我也遇到同样的问题，查看了原代码，发现在
C:\ruby\lib\ruby\gems\1.8\gems\activesupport-2.0.2\lib\active_support\multibyte\chars.rb
中有说明，缺省的multibyte字符串handler是按utf8来处理的。应该需要自己hack代码。
  # Chars enables you to work transparently with multibyte encodings in the Ruby String class without having extensive
  # knowledge about the encoding. A Chars object accepts a string upon initialization and proxies String methods in an
  # encoding safe manner. All the normal String methods are also implemented on the proxy.
  #
  # String methods are proxied through the Chars object, and can be accessed through the +chars+ method. Methods
  # which would normally return a String object now return a Chars object so methods can be chained.
  #
  #   "The Perfect String  ".chars.downcase.strip.normalize #=> "the perfect string"
  #
  # Chars objects are perfectly interchangeable with String objects as long as no explicit class checks are made.
  # If certain methods do explicitly check the class, call +to_s+ before you pass chars objects to them.
  #
  #   bad.explicit_checking_method "T".chars.downcase.to_s
  #
  # The actual operations on the string are delegated to handlers. Theoretically handlers can be implemented for
  # any encoding, but the default handler handles UTF-8. This handler is set during initialization, if you want to
  # use you own handler, you can set it on the Chars class. Look at the UTF8Handler source for an example how to
  # implement your own handler. If you your own handler to work on anything but UTF-8 you probably also
  # want to override Chars#handler.
  #
  #   ActiveSupport::Multibyte::Chars.handler = MyHandler
  #
  # Note that a few methods are defined on Chars instead of the handler because they are defined on Object or Kernel
  # and method_missing can't catch them.