前言：我是在vue+ts环境中写的

// 引入
import SockJS from 'sockjs-client'
import Stomp from 'stompjs'

// 进入主页时执行连接，浏览器有打印说明连接成功，接下来待后端发消息就存储到store，最后渲染即可
let stomp = null
const url = 'http://10.14.2.66:18000/ws'
const socket = new SockJS(url, null, { timeout: 30000 })
stomp = Stomp.over(socket)
const _this = this
//连接
stomp.connect({ userId: 1 }, function() {
  stomp.subscribe('/user/topic/todo', function(res) {
    // 存储store
    _this.$store.commit('setMsgContent', res.body)
  })
  stomp.subscribe('/user/topic/loginout', function() {})
})

// 在需要渲染组件中监听是否有发消息，若发了则在组件中显示出来
computed: {
  logMsg() {
    return this.$store.getters.getMsgContent
  }
},
watch: {
  logMsg(val) {
    // 拿到store中存储的消息
    this.logList = this.logList && this.logList.concat(JSON.parse(val))
    localStorage.setItem('logList', JSON.stringify(this.logList))
    this.logKey += 1
    if (JSON.parse(val).ifFinish) {
      this.showLoading = false
    }
  }
},

更详细的demo源码见：https://gitee.com/zh888/sock-demo