crmeb_shop/template/admin/src/locale/index.js

import Vue from 'vue';
import VueI18n from 'vue-i18n';
import { localRead } from '@/libs/util';
import customZhCn from './lang/zh-CN';
import customZhTw from './lang/zh-TW';
import customEnUs from './lang/en-US';
import zhCnLocale from 'iview/src/locale/lang/zh-CN';
import enUsLocale from 'iview/src/locale/lang/en-US';
import zhTwLocale from 'iview/src/locale/lang/zh-TW';

Vue.use(VueI18n);

// 自动根据浏览器系统语言设置语言
const navLang = navigator.language;
const localLang = navLang === 'zh-CN' || navLang === 'en-US' ? navLang : false;
let lang = localLang || localRead('local') || 'zh-CN';

Vue.config.lang = lang;

// vue-i18n 6.x+写法
Vue.locale = () => {};
const messages = {
  'zh-CN': Object.assign(zhCnLocale, customZhCn),
  'zh-TW': Object.assign(zhTwLocale, customZhTw),
  'en-US': Object.assign(enUsLocale, customEnUs),
};
const i18n = new VueI18n({
  locale: lang,
  messages,
});

export default i18n;

// vue-i18n 5.x写法
// Vue.locale('zh-CN', Object.assign(zhCnLocale, customZhCn))
// Vue.locale('en-US', Object.assign(zhTwLocale, customZhTw))
// Vue.locale('zh-TW', Object.assign(enUsLocale, customEnUs))