django中实现微信消息推送

Posted 2021-01-30 zhaijihai

-公众号(不能主动给用户发消息)
　　-认证的公众号:需要营业执照,需要交钱,可以发多篇文章
　　-未认证的公众号:一天只能发一篇文章
-服务号(微信推送)
　　-需要申请,需要认证
　　-可以主动给用户推送消息
　　-能给推送的人,必须关注我的服务号
　　-沙箱环境
-企业号
　　-企业里用的:
-你们所见的二维码:其实就是一个url地址
-咱们在前端通过url(https://open.weixin.qq.com/connect/oauth2.....)生成一个二维码
-注意*****修改:网页授权获取用户基本信息

一  具体实现代码

1.1moddls

import hashlib
from django.db import models

class UserInfo(models.Model):
    username = models.CharField("用户名", max_length=64, unique=True)
    password = models.CharField("密码", max_length=64)
    uid = models.CharField(verbose_name=\'个人唯一ID\',max_length=64, unique=True)
    wx_id = models.CharField(verbose_name="微信ID", max_length=128, blank=True, null=True, db_index=True)

    def save(self, *args, **kwargs):
        # 创建用户时，为用户自动生成个人唯一ID
        if not self.pk:
            m = hashlib.md5()
            m.update(self.username.encode(encoding="utf-8"))
            self.uid = m.hexdigest()
        super(UserInfo, self).save(*args, **kwargs)

1.2views

import json
import functools
import requests
from django.conf import settings
from django.shortcuts import render, redirect, HttpResponse
from django.http import JsonResponse
from app01 import models
# 沙箱环境地质：https://mp.weixin.qq.com/debug/cgi-bin/sandbox?t=sandbox/login
def index(request):
    obj = models.UserInfo.objects.get(id=1)
    return render(request,\'index.html\',{\'obj\':obj})


def auth(func):
    def inner(request, *args, **kwargs):
        user_info = request.session.get(\'user_info\')
        if not user_info:
            return redirect(\'/login/\')
        return func(request, *args, **kwargs)

    return inner


def login(request):
    """
    用户登录
    :param request: 
    :return: 
    """
    # models.UserInfo.objects.create(username=\'luffy\',password=123)

    if request.method == "POST":
        user = request.POST.get(\'user\')
        pwd = request.POST.get(\'pwd\')
        obj = models.UserInfo.objects.filter(username=user, password=pwd).first()
        if obj:
            request.session[\'user_info\'] = {\'id\': obj.id, \'name\': obj.username, \'uid\': obj.uid}
            return redirect(\'/bind/\')
    else:
        return render(request, \'login.html\')


@auth
def bind(request):
    """
    用户登录后，关注公众号，并绑定个人微信（用于以后消息推送）
    :param request: 
    :return: 
    """
    return render(request, \'bind.html\')


@auth
def bind_qcode(request):
    """
    生成二维码
    :param request: 
    :return: 
    """
    ret = {\'code\': 1000}
    try:
        access_url = "https://open.weixin.qq.com/connect/oauth2/authorize?appid={appid}&redirect_uri={redirect_uri}&response_type=code&scope=snsapi_userinfo&state={state}#wechat_redirect"
        access_url = access_url.format(
            # 商户的appid
            appid=settings.WECHAT_CONFIG["app_id"], # \'wx6edde7a6a97e4fcd\',
            # 回调地址
            redirect_uri=settings.WECHAT_CONFIG["redirect_uri"],
            # 当前登录用户的唯一id
            state=request.session[\'user_info\'][\'uid\'] # 为当前用户生成MD5值
        )
        ret[\'data\'] = access_url
    except Exception as e:
        ret[\'code\'] = 1001
        ret[\'msg\'] = str(e)

    return JsonResponse(ret)


def callback(request):
    """
    用户在手机微信上扫码后，微信自动调用该方法。
    用于获取扫码用户的唯一ID，以后用于给他推送消息。
    :param request: 
    :return: 
    """
    code = request.GET.get("code")

    # 用户md5值,用户唯一id
    state = request.GET.get("state")

    # 获取该用户openId(用户唯一，用于给用户发送消息)
    # request模块朝https://api.weixin.qq.com/sns/oauth2/access_token地址发get请求
    res = requests.get(
        url="https://api.weixin.qq.com/sns/oauth2/access_token",
        params={
            "appid": \'wx3e1f0883236623f9\',
            "secret": \'508ec4590702c76e6863be6df01ad95a\',
            "code": code,
            "grant_type": \'authorization_code\',
        }
    ).json()
    # res.data   是json格式
    # res=json.loads(res.data)
    # res是一个字典
    # 获取的到openid表示用户授权成功
    openid = res.get("openid")
    if openid:
        models.UserInfo.objects.filter(uid=state).update(wx_id=openid)
        response = "<h1>授权成功 %s </h1>" % openid
    else:
        response = "<h1>用户扫码之后，手机上的提示</h1>"
    return HttpResponse(response)


def sendmsg(request):
    def get_access_token():
        """
        获取微信全局接口的凭证(默认有效期俩个小时)
        如果不每天请求次数过多, 通过设置缓存即可
        """
        result = requests.get(
            url="https://api.weixin.qq.com/cgi-bin/token",
            params={
                "grant_type": "client_credential",
                "appid": settings.WECHAT_CONFIG[\'app_id\'],
                "secret": settings.WECHAT_CONFIG[\'appsecret\'],
            }
        ).json()
        if result.get("access_token"):
            access_token = result.get(\'access_token\')
        else:
            access_token = None
        return access_token

    access_token = get_access_token()

    openid = models.UserInfo.objects.get(id=1).wx_id

    def send_custom_msg():
        body = {
            "touser": openid,
            "msgtype": "text",
            "text": {
                "content": \'lqz大帅哥\'
            }
        }
        response = requests.post(
            url="https://api.weixin.qq.com/cgi-bin/message/custom/send",
            # 放到路径?后面的东西
            params={
                \'access_token\': access_token
            },
            # 这是post请求body体中的内容
            data=bytes(json.dumps(body, ensure_ascii=False), encoding=\'utf-8\')
        )
        # 这里可根据回执code进行判定是否发送成功(也可以根据code根据错误信息)
        result = response.json()
        return result

    def send_template_msg():
        """
        发送模版消息
        """
        res = requests.post(
            url="https://api.weixin.qq.com/cgi-bin/message/template/send",
            params={
                \'access_token\': access_token
            },
            json={
                "touser": openid,
                "template_id": \'IaSe9s0rukUfKy4ZCbP4p7Hqbgp1L4hG6_EGobO2gMg\',
                "data": {
                    "first": {
                        "value": "lqz",
                        "color": "#173177"
                    },
                    "keyword1": {
                        "value": "大帅哥",
                        "color": "#173177"
                    },
                }
            }
        )
        result = res.json()
        return result

    result = send_custom_msg()

    if result.get(\'errcode\') == 0:
        return HttpResponse(\'发送成功\')
    return HttpResponse(\'发送失败\')

1.3settings

# ############# 微信 ##############
WECHAT_CONFIG = {
    \'app_id\': \'wx3e1f0883236623f9\',
    \'appsecret\': \'508ec4590702c76e6863be6df01ad95a\',
    \'redirect_uri\': \'http://42.56.89.12/callback/\',
}

1.4url

from app01 import views

urlpatterns = [
    url(r\'^admin/\', admin.site.urls),
    url(r\'^login/$\', views.login),
    url(r\'^index/$\', views.index),
    url(r\'^bind/$\', views.bind),
    url(r\'^bind_qcode/$\', views.bind_qcode),
    url(r\'^callback/$\', views.callback),
    url(r\'^sendmsg/$\', views.sendmsg),
]

流程图