websocket_urlpatterns = [
 url(r'^ws/chat/("htmlcode">

class ChatConsumer(AsyncJsonWebsocketConsumer):
 chats = dict()
 async def connect(self):
 self.group_name = self.scope['url_route']['kwargs']['group_name']
 await self.channel_layer.group_add(self.group_name, self.channel_name)
 # 将用户添加至聊天组信息chats中
 try:
  ChatConsumer.chats[self.group_name].add(self)
 except:
  ChatConsumer.chats[self.group_name] = set([self])
 #print(ChatConsumer.chats)
 # 创建连接时调用
 await self.accept()
 async def disconnect(self, close_code):
 # 连接关闭时调用
 # 将关闭的连接从群组中移除
 await self.channel_layer.group_discard(self.group_name, self.channel_name)
 # 将该客户端移除聊天组连接信息
 ChatConsumer.chats[self.group_name].remove(self)
 await self.close()



接着，我们需要判断连接这个聊天组的用户个数。当有两个用户连接这个聊天组时，我们就直接向这个聊天组发送信息。当只有一个用户连接这个聊天组时，我们就通过push/xxx/把信息发给接收方。


 async def receive_json(self, message, **kwargs):
 # 收到信息时调用
 to_user = message.get('to_user')
 # 信息发送
 length = len(ChatConsumer.chats[self.group_name])
 if length == 2:
  await self.channel_layer.group_send(
  self.group_name,
  {
   "type": "chat.message",
   "message": message.get('message'),
  },
  )
 else:
  await self.channel_layer.group_send(
  to_user,
  {
   "type": "push.message",
   "event": {'message': message.get('message'), 'group': self.group_name}
  },
  )
 async def chat_message(self, event):
 # Handles the "chat.message" event when it's sent to us.
 await self.send_json({
  "message": event["message"],
 })
# 推送consumer
class PushConsumer(AsyncWebsocketConsumer):
 async def connect(self):
 self.group_name = self.scope['url_route']['kwargs']['username']
 await self.channel_layer.group_add(
  self.group_name,
  self.channel_name
 )
 await self.accept()
 async def disconnect(self, close_code):
 await self.channel_layer.group_discard(
  self.group_name,
  self.channel_name
 )
 # print(PushConsumer.chats)
 async def push_message(self, event):
 print(event)
 await self.send(text_data=json.dumps({
  "event": event['event']
 }))



前端
前端实现websocket就比较简单了。就是对websocket进行初始化，定义当websocket连接、关闭和接收消息时要执行哪些动作。


<script>
 export default {
 name : 'test',
 data() {
 return {
 websock: null,
 }
 },
 created() {
 this.initWebSocket();
 },
 destroyed() {
 this.websock.close() //离开路由之后断开websocket连接
 },
 methods: {
 initWebSocket(){ //初始化weosocket
 const wsuri = "ws://127.0.0.1:8080";
 this.websock = new WebSocket(wsuri);
 this.websock.onmessage = this.websocketonmessage;
 this.websock.onopen = this.websocketonopen;
 this.websock.onerror = this.websocketonerror;
 this.websock.onclose = this.websocketclose;
 },
 websocketonopen(){ //连接建立之后执行send方法发送数据
 let actions = {"test":"12345"};
 this.websocketsend(JSON.stringify(actions));
 },
 websocketonerror(){//连接建立失败重连
 this.initWebSocket();
 },
 websocketonmessage(e){ //数据接收
 const redata = JSON.parse(e.data);
 },
 websocketsend(Data){//数据发送
 this.websock.send(Data);
 },
 websocketclose(e){ //关闭
 console.log('断开连接',e);
 },
 },
 }
</script>



参考文章
Django Channels 实现点对点实时聊天和消息推送


Vue中使用websocket的正确使用方法


总结
以上所述是小编给大家介绍的vue+django实现一对一聊天功能的实例代码,希望对大家有所帮助，如果大家有任何疑问请给我留言，小编会及时回复大家的。在此也非常感谢大家对网站的支持！

如果你觉得本文对你有帮助，欢迎转载，烦请注明出处，谢谢！