如何实现vue项目中vue-i18n和element-ui国际化开发

cnpm i vue-i18n --save-dev 
cnpm i element-ui --save-dev

import Vue from 'vue' 
import App from './App' 
import router from './router' 
// element-ui 
import Element from 'element-ui' 
import 'element-ui/lib/theme-chalk/index.css' 
Vue.use(Element) 
// vuei18n 
import i18n from './i18n/i18n' 
Vue.config.productionTip = false 
/* eslint-disable no-new */ 
new Vue({ 
 el: '#app', 
 router, 
 i18n, 
 components: { 
 App 
 }, 
 template: '<App/>' 
})

import Vue from 'vue' 
import locale from 'element-ui/lib/locale' 
import VueI18n from 'vue-i18n' 
import messages from './langs' 
Vue.use(VueI18n) 
const i18n = new VueI18n({ 
 locale: localStorage.lang || 'cn', 
 messages, 
}) 
locale.i18n((key, value) => i18n.t(key, value)) 
export default i18n

import en from './en'; 
import cn from './cn'; 
export default { 
 en: en, 
 cn: cn 
}

import enLocale from 'element-ui/lib/locale/lang/en' 
const en = { 
 message: { 
 'mes': 'hello', 
 }, 
 ...enLocale 
} 
export default en;

import enLocale from 'element-ui/lib/locale/lang/zh-CN' 
const cn = { 
 message: { 
 'mes': '你好', 
 }, 
 ...enLocale 
} 
export default cn;