.netcore signalR 实时消息推送

服务器端引入包   npm install @aspnet/signalr

 1 <template>
 2   <div><p>测试SignalR后台推送消息</p><p>ConnectionId {{connectId}}</p> {{retData}}</div>
 3 </template>
 4 
 5 <script>
 6 import * as signalR from '@aspnet/signalr'
 7     export default {
 8         data() {
 9             return {
10                 retData: '',
11                 connection: "",
12                 connectId:""
13             }
14         },
15         methods: {
16         },
17         created: function () {
18             let thisVue = this;
19            
20            //1 客户端创建连接
21             let connection = new signalR.HubConnectionBuilder()
22                   .withUrl('/api/chathub')
23                   //.withUrl('/chathub',signalR.HttpTransportType.WebSockets)//手动指定传输方式, 请在withUrl()方法的第二个参数
24                   .build();
25 
26             //2 监听服务器端发送的方法
27             connection.on('someFunc', function (obj) {
28                 thisVue.retData =obj.radom ;
29             });
30             connection.on('receiveupdate', function (obj) {
31                 thisVue.retData =obj ;
32             });
33             connection.on('getconnectId', function (obj) {
34                 thisVue.connectId = obj.connectId
35             });
36             connection.on('finsied', function () {
37                 connection.stop();
38                 thisVue.retData = "finished"
39             });
40 
41             //3 开始通信，并调用服务器端方法GetLatestCount
42             connection.start()
43                       //.then(() => {connection.invoke('GetLatestCount', 1);thisVue.retData = "started"})
44                       .catch(err => console.error(err.toString()));
45         }
46     }
47 </script>

前端代码