python tornado微信开发

#微信入门代码
#!/usr/bin/env python2.7
# -*- coding: utf-8 -*-

import tornado.ioloop
import tornado.web
import hashlib
import xml.etree.ElementTree as ET
import time

def check_signature(signature, timestamp, nonce):
# 微信公众平台里输入的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 == signature

class 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与to在返回的时候要交换
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()