vuex提交state&&实时监听state数据的改变方法

[WEBSOCKETDATA](state,socketdata){
 state.socketData=null;//vue监听不到数组的改变 所以清空重置一下就好咯
 state.socketData=socketdata
 }

export default {
 getterSocketData (state) {
 return state.socketData
 }
}

import Vue from 'vue'
import Vuex from 'vuex'
import mutations from './mutations'
import getters from './getters'

const state = {
 socketData:{},//websocket数据
}

export default new Vuex.Store({
 state,
 mutations,
 getters
})

import {mapMutations,mapState} from 'vuex'
export default {
 computed:{
   ...mapState([
   'socketData',
   ])
  },
 data(){
  return{
  skip:'2',
  webdata:{
   "current_item": "111", "show_item": 'false', "cart_item_list": [],"totalPrice":7.5,"delIndexList":[],'addList':[]
  },
  }
 },
 mounted(){
  // this.initWebsocket()
  var addList=[{"sku":"1","num":"2","price":3.5,"name":'苹果0'}];
  var delIndexList=[];
  this.webdata.addList=addList;
  this.webdata.delIndexList=delIndexList;
  this.websocket_data(this.webdata)
  console.log("index1--------------------")
  console.log(this.socketData);
  setTimeout(()=>{//定时器为了模拟websocket发送数据
  var addList=[{"sku":"1","num":"2","price":3.5,"name":'苹果11'}];
  var delIndexList=[0];
  this.webdata.addList=addList;
  this.webdata.delIndexList=delIndexList;
  this.$store.commit("websocket_data",this.webdata)//必须写 要不然getter拿不到改变之后的数据
  console.log("index--------------------");
  console.log(this.socketData);
  },1000);
 },
 }

import {mapState,mapMutations,mapGetters} from 'vuex';
export default {
 data(){
  return{
  prolength:0,
  defaultImg: 'this.src="' + require('../assets/defaultImg.png') + '"',
  productinfos: {
   "current_item": "111", "show_item": 'false', "cart_item_list": [],"totalPrice":7.5,"delIndexList":[],'addList':[]
  },
  MyMar:'',
  }
 },
 computed: {//监听socketData的变化 做页面处理
  ...mapState([
  'socketData',
  ]),
  ...mapGetters([
  'getterSocketData',
  ])
 },
  watch:{
  getterSocketData(message){//message 就是socketData
  console.log(message);//根据数据指示 进行逻辑操作
  ........................
  }
  }
}