This article brings you two ways to use Python to generate QR codes in WeChat mini programs. It has certain reference value. Friends in need can refer to it. I hope it will be helpful to you.
WeChat applet generates QR code:
The language used is python, there are two ways:
1: The backend passes a string to the frontend, and the frontend displays
2: The backend directly generates the picture
1: The backend passes a string to the frontend, and the frontend displays
def get_wxCode(Request, UserInfo): try: scene = Request["scene"] access_token = get_wxCode_token() if not access_token: return False textmod = {"scene": scene, "page": "pages/index/main", "width": 430, "auto_color": True, "is_hyaline": False} textmod = json.dumps(textmod).encode(encoding='utf-8') header_dict = {'User-Agent': 'Mozilla/5.0 (Windows NT 6.1; Trident/7.0; rv:11.0) like Gecko', "Content-Type": "application/json"} url = 'https://api.weixin.qq.com/wxa/getwxacodeunlimit?access_token=' + access_token req = request.Request(url=url, data=textmod, headers=header_dict) res = request.urlopen(req) res = res.read() b64str = base64.b64encode(res) return b64str except Exception as e: print(e) return False
var getWXcode2 = function(hostname){ //获取管理端小程序码 //动态获取域名,若为本地环境,则默认携带参数为wx-test //示例:londex.i-plc.cn var hostname1 = window.location.host; hostname1 = hostname1.split('.')[0]; if(hostname1 == '127' || hostname1 == 'localhost'){ hostname1 = hostname; } if(window.localStorage.getItem('wxcode2')){ $('#wxcodeImg2').attr('src','data:image/png;base64,'+ window.localStorage.getItem('wxcode2')); $('#wxCodeModal2').modal('show'); return; } var params = { "scene":hostname1, }; $.ajax({ type:'post', url:'/request?rname=i_plc.Page.wechat_api.wechat.get_wxCode', data:params, success:function (res) { console.log(res) if(res === false){ $.MessageBox.notify('warn', '获取失败,请稍后再试!'); }else{ console.log(res) $('#wxcodeImg2').attr('src','data:image/png;base64,'+res); $('#wxCodeModal2').modal('show'); window.localStorage.setItem('wxcode2',res) } } }); };
2: The backend directly generates the picture
def get_wxCode(Request, UserInfo): """ 生成小程序二维码 :param Request: :param UserInfo: :return: """ result = {"success": False} try: # scene = Request["scene"] access_token = get_wxCode_token() if not access_token: raise Exception("access_token") compid = Request["compid"] sql = "select compIndex from company where operationFlag=9 and compID=%s" % compid Result = SqlRun(sql) if Result["Data"] and Result["Data"][0] and Result["Data"][0][0]: scene = Result["Data"][0][0] textmod = {"scene": scene, "page": "pages/index/main", "width": 430, "auto_color": True, "is_hyaline": False} textmod = json.dumps(textmod).encode(encoding='utf-8') header_dict = {'User-Agent': 'Mozilla/5.0 (Windows NT 6.1; Trident/7.0; rv:11.0) like Gecko', "Content-Type": "application/json"} url = 'https://api.weixin.qq.com/wxa/getwxacodeunlimit?access_token=' + access_token req = request.Request(url=url, data=textmod, headers=header_dict) res = request.urlopen(req) res = res.read() b64str = base64.b64encode(res) imgdata=base64.b64decode(b64str) path = "static/tmpfiles/scan_%s.png" % file_name file = open(os.path.join(settings.BASE_DIR, path,), 'wb+') file.write(imgdata) file.close() result["code_url"] = path result["success"] = True except Exception as e: result["error_msg"] = str(e) return json.dumps(result) def get_wxCode_token(): try: textmod = {"grant_type": "client_credential", "appid": "wx44a452fb08b0a990", "secret": "9aedb0a274027bdd09612fbde3298129" } textmod = parse.urlencode(textmod) header_dict = {'User-Agent': 'Mozilla/5.0 (Windows NT 6.1; Trident/7.0; rv:11.0) like Gecko'} url = 'https://api.weixin.qq.com/cgi-bin/token' req = request.Request(url='%s%s%s' % (url, '?', textmod), headers=header_dict) res = request.urlopen(req) res = res.read().decode(encoding='utf-8') res = json.loads(res) access_token = res["access_token"] return access_token except Exception as e: print(e) return False
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