微信服务器后台消息处理机制

app.py

from flask import Flask, request

import time

import xml.etree.ElementTree as et

import hashlib

app = Flask(__name__)

@app.route('/wx/', methods=['GET', 'POST'])

def wechat():

if request.method == 'GET':

token = 'groundwalker'

data = request.args

signature = data.get('signature', '')

timestamp = data.get('timestamp', '')

nonce = data.get('nonce', '')

echostr = data.get('echostr', '')

list = [token, timestamp, nonce]

list.sort()

s = list[0] + list[1] + list[2]

hascode = hashlib.sha1(s.encode('utf-8')).hexdigest()

if hascode == signature:

return echostr

else:

return