django中使用dwebsocket 后端实时进行和前端通讯

安装dwebsocket
https://github.com/StanleyLe/Utils/tree/StanleyLe-patch-1
下载到本地 在命令行中切换到压缩到的文件夹执行

 python setup.py install

简单使用

<script type="text/javascript">


    var socket = new WebSocket("ws:" + window.location.host + "/drug/drug_connect/");
            socket.onopen = function () {
                console.log('WebSocket open');//成功连接上Websocket
                socket.send('adasdasda。。。。');//发送数据到服务端
            };
            socket.onmessage = function (e) {
                console.log('message: ' + e.data);//打印服务端返回的数据
            };
            socket.onclose=function(e){
              console.log(e);
              socket.close(); //关闭TCP连接
            };
            if (socket.readyState == WebSocket.OPEN) socket.onopen();

</sctipt>

drug/urls.py

    url(r'drug_connect/$', views.drug_connect, name='drug_connect'),

drug/views.py

from  dwebsocket.decorators import accept_websocket
@accept_websocket
def drug_socket(request):

    if request.is_websocket():
        try:
            while 1:
                message = request.websocket.wait()  # 接受前段发送来的数据
                if message:
                    message = bytes.decode(message)
                    if message != '886':
                        try:
                            receive_data = RFID_cls.getRFID()
                            if receive_data:
                                request.websocket.send(receive_data.encode())  # 发送给前段的数据
                                time.sleep(1)

                        except Exception as e:
                            request.websocket.close()
                            return
                    else:
                        print('socket请求关闭！！！')
                        request.websocket.close()
                        return
        except Exception as e:
            try:
                request.websocket.close()
                return
            except:
                return