vue 使用vuex在页面跳转的实现方式

//index.js
import Vue from 'vue'
import Vuex from 'vuex'
import state from './state'
import mutations from  './mutations'
import getters from './getters'
Vue.use(Vuex)
export default new Vuex.Store({
  state,
  mutations,
  getters,
})

//state.js
const state = {
 song:{}
}
export default state

//mutations.js
const mutations = {
    get_song(state,song){
        state.song = song
    }
}
export default mutations

//getters.js
const getters = {
    song: state => state.song
}
export default getters

const store = new Vuex.Store({
state: {
parameters:{}//保存页面传参
},
getters:{
parameters : state => state.parameters
},
mutations: {
setParameters : (state,parametersData) => {//页面参数传递格式{key:‘key',value:‘value'}
if(parametersData){
//试了好久state.parameters[key]=value这样会报错只能先取出来添加属性再赋值
let parameters=state.parameters;
parameters[parametersData.key]=parametersData.value;
state.parameters=parameters;
}
}
},
modules
})
//放置参数
this.$ store.commit(“setParameters”,{key:‘faceAnalysis'+item.query.feature,value:this.query});
this.$ router.push({path:'/dataSelect/faceAnalysis/'+param.feature,query:{feature:this.query.feature})；

let parameters=this.$ store.getters.parameters;
if(this.$ route.query.feature&&parameters[‘faceAnalysis'+this.$route.query.feature]){
var query=parameters[‘faceAnalysis'+this . $route.query.feature];
}