title: django render to xml like html
body: <p>I'm trying to render to xml in by <code>django.shortcut.render_to_response</code>， but it seems not working. can any only find some solutions to work over this?</p>
  
  <p>here is the code </p>
  
  <pre><code>class BaseResponse(object):
      """
      这个类类似于Django的通用视图，response_name是要输出的消息模版
      msg是用户输入消息的一个字典,如果要自定义消息，只要自定义context
      就可以了，消息内容格式由微信官方指定
      """
      template_name = None
      response_type = "application/xhtml+xml"
  
      def __init__(self, msg):
          self.msg = msg
          self.template_context = {'ToUserName': msg['FromUserName'], 'FromUserName': msg['ToUserName'],
                                   'CreateTime': time.time()}
  
      def get_response(self, context=None):
          self.template_context.update(context)
          res = render_to_response(self.template_name, context=self.template_context,
                                   content_type=self.response_type)
          return self.template_context
  </code></pre>
  
  <p>and some xml</p>
  
  <pre><code>&lt;xml&gt;
      &lt;ToUserName&gt;&lt;![CDATA[{{ ToUserName }}]]&gt;&lt;/ToUserName&gt;
      &lt;FromUserName&gt;&lt;![CDATA[{{ FromUserName }}]]&gt;&lt;/FromUserName&gt;
      &lt;CreateTime&gt;{{ CreateTime }}&lt;/CreateTime&gt;
      &lt;MsgType&gt;&lt;![CDATA[text]]&gt;&lt;/MsgType&gt;
      &lt;Content&gt;&lt;![CDATA[{{ Content }}]]&gt;&lt;/Content&gt;
  &lt;/xml&gt;
  </code></pre>