用python实现监听微信撤回消息

import itchat
from itchat.content import *
import os
import time
import xml.dom.minidom   

temp = 'd:/itchat' + '/' + '撤回的消息'
if not os.path.exists(temp):
    os.mkdir(temp)

itchat.auto_login(True)   

dict = {}   

@itchat.msg_register([TEXT, PICTURE, FRIENDS, CARD, MAP, SHARING, RECORDING, ATTACHMENT, VIDEO]) 
def resever_info(msg):
    global dict   

    info = msg['Text']  
    msgId = msg['MsgId']  
    info_type = msg['Type'] 
    name = msg['FileName']  
    fromUser = itchat.search_friends(userName=msg['FromUserName'])['NickName']
    ticks = msg['CreateTime']  
    time_local = time.localtime(ticks)
    dt = time.strftime("%Y-%m-%d %H:%M:%S", time_local)
    dict[msgId] = {"info": info, "info_type": info_type, "name": name, "fromUser": fromUser, "dt": dt}


@itchat.msg_register(NOTE) 
def note_info(msg):
    if '撤回了一条消息' in msg['Text']:
        content = msg['Content']
        doc = xml.dom.minidom.parseString(content)
        result = doc.getElementsByTagName("msgid")
        msgId = result[0].childNodes[0].nodevalue
        msg_type = dict[msgId]['info_type']
        if msg_type == 'Recording':  
            recording_info = dict[msgId]['info']  
            info_name = dict[msgId]['name'] 
            fromUser = dict[msgId]['fromUser'] 
            dt = dict[msgId]['dt'] 
            recording_info(temp + '/' + info_name) 
            send_msg = '【发送人:】' + fromUser + 'n' + '发送时间:' + dt + 'n' + '撤回了一条语音'
            itchat.send(send_msg, 'filehelper') 
            itchat.send_file(temp + '/' + info_name, 'filehelper')
            del dict[msgId] 
            print("保存语音")
        elif msg_type == 'Text':
            text_info = dict[msgId]['info'] 
            fromUser = dict[msgId]['fromUser']
            dt = dict[msgId]['dt'] 
            send_msg = '【发送人:】' + fromUser + 'n' + '发送时间:' + dt + 'n' + '撤回内容:' + text_info
            itchat.send(send_msg, 'filehelper')
            del dict[msgId] 
            print("保存文本")
        elif msg_type == 'Picture':
            picture_info = dict[msgId]['info'] 
            fromUser = dict[msgId]['fromUser']
            dt = dict[msgId]['dt'] 
            info_name = dict[msgId]['name'] 
            picture_info(temp + '/' + info_name) 
            send_msg = '【发送人:】' + fromUser + 'n' + '发送时间:' + dt + 'n' + '撤回了一张图片'
            itchat.send(send_msg, 'filehelper')
            itchat.send_file(temp + '/' + info_name, 'filehelper')
            del dict[msgId] 
            print("保存图片")


itchat.run()

itchat下载桌面微信的库。切记。不要下载网页版的库，否则微信会报安全性错误无法登陆。