微信小程序cookies和session会话

微信小程序cookies和session会话

最近由于业务需要在开发微信小程序，查阅帮助文档及社区，发现相关内容十分匮乏甚至官方的回复都模棱两可。
现存登录系统业务需求：当用户为已注册用户，则直接进入相关页面；若用户为未注册用户，则进入注册页面进行注册引导。

相关代码

小程序端登录代码

 wx.login({
      success: res => {
        // 发送 res.code 到后台换取 openId, sessionKey, unionId，serverIP为开发者服务器IP
        console.log('wx code:' + res.code)
        wx.request({
          url: serverIP + '/get_login_code/',
          data: { code:res.code },
          header: { "Content-type": "application/json" },
          method: 'POST',
          success: function (res) {
            console.log(res)
            //在接收到返回数据中 会有cookies，保存。再下次发送数据时，头部添加cookie，
            wx.setStorageSync('token', res.cookies[0])
          },
          fail: function (res) {},
          complete: function (res) {},
        })
        
      }
    })

在接收到返回数据中 会有cookies，保存。再下次发送数据时，头部添加cookie

//value.user_email等为注册信息，注意头部要加入上方保存的cookie
 wx.request({
      url: serverIP + '/regist_fromWX?user_email=' + value.user_email + '&user_name=' + value.user_name + '&user_telephone=' + value.user_telephone + '&user_type=' + value.user_type,
      header: {
        "Content-type": "application/json",
        'cookie': wx.getStorageSync("token")
      },
      success(res) {
        console.log(res)
      }
    })

服务器端用session来设置与读取，python代码

#接收登录信息函数
def get_login_code(request):
    print(request.session.keys())
    if request.method == "POST":
        print(request.body)
        pull_info = json.loads(request.body)
        code = pull_info['code']
        url = 'https://api.weixin.qq.com/sns/jscode2session'
        params = {'appid': 'xxxxxxxx', 'secret': 'xxxxxxx', 'js_code': code,
                  'grant_type': 'authorization_code'}
        result = get_method_request(url, params)
        print(result)
        result = json.loads(result)
        user_type = ''
        try:
            #查找是否在表TestTable中
            user_info = TestTable.objects.get(openid=result['openid'])
            user_type = 'engineer'
        except BaseException as e:
            print(e)
            print('no in Test table. ')
        # 此处为cookies session写法，默认session数据库进行存储
        if user_type != '':
            _response = {'code':200,'user_type':user_type,'userInfoID':user_info.id}
            return HttpResponse(json.dumps(_response))
        else:
            request.session['openid'] = result['openid']
            request.session['session_key'] = result['session_key']
            return HttpResponse('{"code":403}')


def get_method_request(url, params):
    headers = {
        "User-Agent": "Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/67.0.3396.87 Safari/537.36",
    }
    response = requests.get(url=url, params=params, headers=headers).text
    print(response)
    return response


def regist_fromWX(request):
    if request.method == "GET":
        user_name = request.GET['user_name']
        user_email = request.GET['user_email']
        user_telephone = request.GET['user_telephone']
        user_type = request.GET['user_type']
        user_nickname = request.GET['user_nickname']
        print(user_name, user_email, user_telephone, user_type, user_nickname)
        print(request.session['openid'], request.session['session_key'])
        try:
            try:
                #查找临时注册表值是否已存储此openid
                aa = Regist_admin.objects.filter(openid=request.session['openid'])
                print(aa[0].name)
                print('repeat')
                return HttpResponse('repeat')
            except:
                # 若临时注册表中无此openid，则保存此人进入临时注册表
                Regist_admin(nickname=user_nickname, name=user_name, openid=request.session['openid'],
                                        email=user_email,
                                        telephone=user_telephone, types=user_type).save()
                return HttpResponse('success')
        except:
            return HttpResponse('fail')