其他的配置不赘述了，直接网上搜一下django使用channel的配置方法

我初步研究通道先用的内存
在setting文件中
 

CHANNEL_LAYERS = {"default": {"BACKEND": "channels.layers.InMemoryChannelLayer",},
}

这里我重点说一下luckysheet源码的部分

首先是websocket，这部分代码在源码的server.js中，通过研究源码，才解决了问题

pako解压的问题尝试了很多次都没不太对，于是直接把pako部分的源码给注释掉了，直接传过去的就是json字符串

} else {// let msg = pako.gzip(encodeURIComponent(JSON.stringify(d)), {to: "string"});let msg = JSON.stringify(d);//console.info(msg);if (_this.websocket != null) {_this.websocket.send(msg);}}

后端的消费者类的主要代码如下

from channels.generic.websocket import AsyncJsonWebsocketConsumer
from urllib.parse import parse_qs
import jsonclass TableConsumer(AsyncJsonWebsocketConsumer):table = NonegridKey = Noneasync def connect(self):query = self.scope['query_string'].decode('utf-8')t = parse_qs(query)['t'][0]self.gridKey = parse_qs(query)['g'][0]await self.channel_layer.group_add(f'table_{self.gridKey}', self.channel_name)await self.accept()print('建立连接')async def disconnect(self, close_code):print('断开连接')await self.channel_layer.group_discard(f'table_{self.gridKey}', self.channel_name)async def receive(self, text_data=None, bytes_data=None):# 使用json.loads方法将JSON字符串解析为Python的字典对象if text_data !='rub':parsed_data = json.loads(text_data)print(parsed_data)# 这里构造要广播的数据broadcast_data = dict()broadcast_data['type'] = 3broadcast_data['data'] = text_databroadcast_data['username'] = 'test'broadcast_event = {"type": "broadcast_message","message": broadcast_data}# 向对应的组发送广播事件，触发broadcast_message方法来实际发送给组内成员await self.channel_layer.group_send(f'table_{self.gridKey}', broadcast_event)async def broadcast_message(self, event):message = event["message"]await self.send_json(message)

之前对websocket和channel不太了解，看了前端代码后把type和message给改了，后来多次尝试发现这个千万别改，他会在send的时候卡住而且不报任何错误（因为协程），如果是广播的话只需要修改broadcast_data的内容就行，通过解读前端的代码，在后端构建返回的json，成果把type=3的内容实现了，也就是鼠标移动的部分

else if(type == 3){ //多人操作不同选区("t": "mv")（用不同颜色显示其他人所操作的选区）let id = data.id;let username = data.username;let item = JSON.parse(data.data);let type = item.t,index = item.i,value = item.v;

剩余的部分我就先不写了，具体操作应该是根据前端过来的json内容来自行判断返回的type，然后进行消息的分发！！！！

重点：读源码读源码读源码！！！！！

又写了两种type，批量的没写到type=4的情况，因为他前端写的感觉有问题还造成了后端的麻烦，于是后端写成多个type=2了，增加了一点点服务器压力

from channels.generic.websocket import AsyncJsonWebsocketConsumer
from urllib.parse import parse_qs
import jsonfrom pyasn1_modules.rfc5639 import brainpoolP160r1class TableConsumer(AsyncJsonWebsocketConsumer):table = NonegridKey = Noneasync def connect(self):query = self.scope['query_string'].decode('utf-8')t = parse_qs(query)['t'][0]self.gridKey = parse_qs(query)['g'][0]await self.channel_layer.group_add(f'table_{self.gridKey}', self.channel_name)await self.accept()print('建立连接')async def disconnect(self, close_code):print('断开连接')await self.channel_layer.group_discard(f'table_{self.gridKey}', self.channel_name)async def receive(self, text_data=None, bytes_data=None):# 使用json.loads方法将JSON字符串解析为Python的字典对象if text_data !='rub':parsed_data = json.loads(text_data)print(parsed_data)if parsed_data['t'] == 'mv':# 这里构造要广播的事件数据，假设要原封不动广播接收到的数据，将其放入'message'字段broadcast_data = dict()broadcast_data['type'] = 3broadcast_data['data'] = text_databroadcast_data['username'] = 'test'broadcast_event = {"type": "broadcast_message","message": broadcast_data}# 向对应的组发送广播事件，触发broadcast_message方法来实际发送给组内成员await self.channel_layer.group_send(f'table_{self.gridKey}', broadcast_event)if parsed_data['t'] == 'v':# 这里构造要广播的事件数据，假设要原封不动广播接收到的数据，将其放入'message'字段broadcast_data = dict()broadcast_data['type'] = 2broadcast_data['data'] = text_databroadcast_data['username'] = 'test'broadcast_event = {"type": "broadcast_message","message": broadcast_data}# 向对应的组发送广播事件，触发broadcast_message方法来实际发送给组内成员await self.channel_layer.group_send(f'table_{self.gridKey}', broadcast_event)if parsed_data['t'] == 'rv':row = parsed_data['range']['row']column = parsed_data['range']['column']for j in range(column[0], column[1]+1):numj = j-column[0]for i in range(row[0], row[1] + 1):numi = i-row[0]try:broadcast_data = dict()broadcast_data['type'] = 2# data = list()broadcast_data['username'] = 'test'data = dict()data['t'] = 'v'data['i'] = 0data['v'] = parsed_data['v'][numi][numj]data['r'] = idata['c'] = jbroadcast_data['data'] = json.dumps(data)broadcast_event = {"type": "broadcast_message","message": broadcast_data}await self.channel_layer.group_send(f'table_{self.gridKey}', broadcast_event)except Exception as e:print(e)async def broadcast_message(self, event):message = event["message"]await self.send_json(message)