vuex store 分模块化

store分模块代码如下所示：

代码结构下图所示

//  user.js 模块

const user = {
    state: {
        demo: '我是XX用户'
    },

    //同步 this.$store.commit('方法名'); 来调用
    mutations: {
        setDemo(state, value) {
            state.demo = value + " 触发demo";
        },
        setDemo1(state, value) {
            state.demo = value + " 触发demo1";
        }
    },
    //异步 this.$store.dispatch('方法名'); 来调用
    actions: {
        //this.$store.dispatch('setName');
        setName(content) {
            console.log("走这里了setName")
            content.commit('setDemo', "");
        },
        // 这里使用了异步
        setName1(content, value) {
            console.log("走这里了setName1")
            content.commit('setDemo1', value);
        }
    }
};
export default user;

//  getters.js

 const getters = { demo: state => state.user.demo } export default getters;

//  index.js


import Vue from 'vue'
import Vuex from 'vuex'
import getters from './getters'
Vue.use(Vuex)


//module文件夹下太多文件，导入太麻烦，使用context实现模块化导入
const modulesFiles = require.context('./modules', true, /\.js$/)

const modules = modulesFiles.keys().reduce((modules, modulePath) => {
    const moduleName = modulePath.replace(/^\.\/(.*)\.\w+$/, '$1')
    const value = modulesFiles(modulePath)
    modules[moduleName] = value.default
    return modules
}, {})

const store = new Vuex.Store({
    modules,
    getters
})
export default store

// main.js中引入

import App from './App.vue'

import Vue from 'vue'
Vue.config.productionTip = false
App.mpType = 'app'
import store from './store/index'  // 引入
//把vuex定义成全局组件
Vue.prototype.$store = store　　  // 挂载
const app = new Vue({
    ...App,
    store   // 挂载
})
app.$mount()

// 页面测试用例代码

<template>
    <viw>
        <view class="content">sotre 测试</view>

        <view>{{ this.$store.state.user.demo }}</view>
        <button @click="test" style=" 90%;">点我【commit提交】</button>

        <button @click="test2" style=" 90%;margin-top: 30px;">点我【dispatch提交】</button>
    </viw>
</template>

<script>
import { mapState, mapGetters, mapActions, mapMutations } from 'vuex';
export default {
    data() {
        return {
            title: 'Hello'
        };
    },
    computed: mapState(['user']), // 这里是引用user模块
    mounted() {
        console.log(this.$store.getters.demo);
        console.log('我是doemo2:' + this.$store.state.user.demo);
    },
    onLoad() {},
    methods: {
        ...mapMutations(['setDemo']),
        ...mapActions(['setName']),
        test() {
            this.$store.commit('setDemo', '大王加我来巡山-01');
        },
        test2() {
            //this.$store.dispatch('setName');
            this.$store.dispatch('setName1', '大王加我来巡山-02');
        }
    }
};
</script>