def text_msg(from, to, content)
      msg = TextReplyMessage.new
      msg.ToUserName   = to
      msg.FromUserName = from
      msg.Content = content
      msg.to_xml
    end
def text_msg(from, to, content)
      msg = TextReplyMessage.new
      msg.ToUserName   = to
      msg.FromUserName = from
      msg.Content = content
      msg.to_xml
    end
创建文本信息