最近的项目中使用ws 长连接来接收和发送消息, 直接上代码
import * as SockJS from "sockjs-client"; import Stomp from "stompjs";
connection() {
if (this.clientSubscribe) {
console.log(‘unsubscribe‘)
this.clientSubscribe.unsubscribe()
}
const token = "";
// const TENANT_ID = getStore({name: ‘tenantId‘}) ? getStore({name: ‘tenantId‘}) : ‘1‘
const headers = {
Authorization: "Bearer " + token,
chatSessionId: this.chatBaseInfo.chatSessionId,
tempToken: this.chatBaseInfo.tempToken,
};
// 建立连接对象
this.socket = new SockJS("/bot/ws"); // 连接服务端提供的通信接口,连接以后才可以订阅广播消息和个人消息
//获取STOMP子协议的客户端对象
this.stompClient = Stomp.over(this.socket);
//this.stompClient.debug = true
//向服务器发起websocket连接
this.stompClient.connect(
headers,
() => {
this.isConnection = false
this.successCallback()
},
() => {
console.log(‘断开重新连接‘)
this.isConnection = true
console.log( this.stompClient)
if (this.env === "WEB") {
setTimeout(() => {
this.connection()
},2000)
}
//this.reconnect(this.successCallback);
}
);
},
successCallback(){
this.clientSubscribe = this.stompClient.subscribe(
"/x99/receive/" + this.chatBaseInfo.chatSessionId,
(msg) => {
// 订阅服务端提供的某个topic;
// 处理接收的数据
}
);
},
遇到的问题是 在ios手机端 锁屏的情况下 会把websocket 断开 解决的方案是
mounted() {
document.addEventListener(‘visibilitychange‘, () => {
if (!document.hidden) {//页面呼出
if (this.stompClient&&!this.stompClient.connected) {
this.connection()
}
}
})
},
注意 1.在web 端是没有这个事件的 所以在重新连接的地方加了判断 是web 端用了定时器去冲新连接
2.在重新连接前需要判断之前的订阅是不是存在 存在的话先取消订阅,
原文:https://www.cnblogs.com/buxiugangzi/p/13678286.html