新增加signalR

2022-04-25 13:56:30 +08:00
parent 1e2cb25af4
commit d6675e84fe
10 changed files with 157 additions and 5 deletions
@@ -0,0 +1,87 @@
+// 官方文档：https://docs.microsoft.com/zh-cn/aspnet/core/signalr/javascript-client?view=aspnetcore-6.0&viewFallbackFrom=aspnetcore-2.2&tabs=visual-studio
+import * as signalR from '@microsoft/signalr'
+import store from '../store'
+import { getToken } from '@/utils/auth'
+import { ElNotification } from 'element-plus'
+
+export default {
+  // signalR对象
+  SR: {},
+  // 失败连接重试次数
+  failNum: 4,
+  baseUrl: '',
+	init(url) {
+		console.log(url);
+    const connection = new signalR.HubConnectionBuilder()
+      .withUrl(url, { accessTokenFactory: () => getToken() })
+      .withAutomaticReconnect()//自动重新连接
+      .configureLogging(signalR.LogLevel.Information)
+      .build();
+    this.SR = connection;
+    // 断线重连
+    connection.onclose(async () => {
+      console.log('断开连接了')
+			console.assert(connection.state === signalR.HubConnectionState.Disconnected);
+			// 建议用户重新刷新浏览器
+      await this.start();
+    })
+
+    connection.onreconnected(() => {
+      console.log('断线重新连接成功')
+    })
+    this.receiveMsg(connection);
+    // 启动
+    // this.start();
+  },
+  /**
+   * 调用 this.signalR.start().then(async () => { await this.SR.invoke("method")})
+   * @returns 
+   */
+  async start() {
+    var that = this;
+
+    try {
+      //使用async和await 或 promise的then 和catch 处理来自服务端的异常
+      await this.SR.start();
+      //console.assert(this.SR.state === signalR.HubConnectionState.Connected);
+      console.log('signalR 连接成功了', this.SR.state);
+      return true;
+    } catch (error) {
+      that.failNum--;
+      console.log(`失败重试剩余次数${that.failNum}`, error)
+      if (that.failNum > 0) {
+        setTimeout(async () => {
+          await this.SR.start()
+        }, 5000);
+      }
+      return false;
+    }
+  },
+	// 接收消息处理
+  receiveMsg(connection) {
+    connection.on("onlineNum", (data) => {
+      store.dispatch("socket/changeOnlineNum", data);
+    });
+    // 接收欢迎语
+    connection.on("welcome", (data) => {
+      console.log('welcome', data)
+      ElNotification.info(data)
+    });
+    // 接收后台手动推送消息
+    connection.on("receiveNotice", (title, data) => {
+      ElNotification({
+        type: 'info',
+        title: title,
+        message: data,
+        dangerouslyUseHTMLString: true,
+        duration: 0
+      })
+    })
+    // 接收系统通知/公告
+    connection.on("moreNotice", (data) => {
+      if (data.code == 200) {
+        store.dispatch("socket/getNoticeList", data.data);
+      }
+    })
+  }
+}