#微信入門代碼#!/usr/bin/env python2.7# -*- coding: utf-8 -*-import tornado.ioloopimport tornado.webimport hashlibimport xml.etree.ElementTree as ETimport timedef check_signature(signature, timestamp, nonce):  # 微信公眾平臺里輸入的token  token="linden"  #字典序排序  list = [token,timestamp,nonce]  list.sort()  sha1=hashlib.sha1()  map(sha1.update,list)  hashcode=sha1.hexdigest()  return hashcode == signatureclass MainHandler(tornado.web.RequestHandler):  def get(self):    signature = self.get_argument('signature')    timestamp = self.get_argument('timestamp')    nonce = self.get_argument('nonce')    echostr = self.get_argument('echostr')    if check_signature(signature, timestamp, nonce):      self.write(echostr)    else:      self.write('fail')  def post(self):     body = self.request.body    data = ET.fromstring(body)    toUser = data.find('ToUserName').text    fromUser = data.find('FromUserName').text    createTime = int(time.time())    msgType = data.find('MsgType').text    content = data.find('Content').text    msgId= data.find("MsgId").text    # from與to在返回的時候要交換    textTpl = """<xml>      <ToUserName><![CDATA[%s]]></ToUserName>      <FromUserName><![CDATA[%s]]></FromUserName>      <CreateTime>%s</CreateTime>      <MsgType><![CDATA[%s]]></MsgType>      <Content><![CDATA[%s]]></Content>      <MsgId>%s</MsgId>      </xml>"""    out = textTpl % (fromUser, toUser, createTime, msgType, content, msgId)    self.write(out)application = tornado.web.Application([  (r"/", MainHandler),])if __name__ == "__main__":  application.listen(80)  tornado.ioloop.IOLoop.instance().start()