第一步：创建文件夹lang、文件夹下创建index.js、en.js、zh.js

index.js

import Vue from "vue";

// 引入自己的语言包
import chinese from "./zh"; // 中文
import english from "./en"; // 英文

// element ui 国际化
import Element from "element-ui";
import enLocale from "element-ui/lib/locale/lang/en";
import zhLocale from "element-ui/lib/locale/lang/zh-CN";
// 国际化
import VueI18n from "vue-i18n";
Vue.use(VueI18n);

// 配置i18n语言包
const messages = {
  en: {
    ...english,
    ...enLocale, // 或者用 Object.assign({ message: 'hello' }, enLocale)
  },
  zh: {
    ...chinese,
    ...zhLocale, // 或者用 Object.assign({ message: '你好' }, zhLocale)
  },
};

// 国际化配置
const i18n = new VueI18n({
  locale: localStorage.getItem("language")
    ? localStorage.getItem("language")
    : "zh", // 默认中文
  messages,
  silentTranslationWarn: true,
});

// vue配置
Vue.use(Element, {
  i18n: (key, value) => i18n.t(key, value),
});

export default i18n;

en.js

export default {
  level: "level",
  // 路由
  router: {
    Dashboard: "Dashboard",
  },
};

zh.js

export default {
  level: "级",
  // 路由
  router: {
    Dashboard: "首页",
  },
};

第二步：在main.js中引入

import i18n from "./lang/index";

new Vue({
  el: "#app",
  i18n,
  render: (h) => h(App),
});

第三步：页面内使用

  <img :src="$t('Process.Proimg')" style="width: 100%" />

侧边栏显示：

第一步：创建文件utils/i18n.js

import i18n from "@/lang/index";
// 翻译router.meta。标题，用于面包屑侧边栏tagsview
export function generateTitle(title) {
  const hasKey = this.$t("router." + title);
  if (hasKey) {
    // $t :this method from vue-i18n, inject in @/lang/index.js
    const translatedTitle = this.$t("router." + title);

    return translatedTitle;
  }
  return title;
}

第二步：修改SidebarItem文件

先引入，然后在method中调用，页面内使用

:title="generateTitle(onlyOneChild.meta.title)"

:title="generateTitle(item.meta.title)"

import { generateTitle } from "@/utils/i18n";

methods: {

   generateTitle,

 }

<template>
  <div v-if="!item.hidden">
    <template
      v-if="
        hasOneShowingChild(item.children, item) &&
        (!onlyOneChild.children || onlyOneChild.noShowingChildren) &&
        !item.alwaysShow
      "
    >
      <app-link v-if="onlyOneChild.meta" :to="resolvePath(onlyOneChild.path)">
        <el-menu-item
          :index="resolvePath(onlyOneChild.path)"
          :class="{ 'submenu-title-noDropdown': !isNest }"
          @click.native="toggleDrawer"
        >
          <item
            :icon="onlyOneChild.meta.icon || (item.meta && item.meta.icon)"
            :title="generateTitle(onlyOneChild.meta.title)"
          />
        </el-menu-item>
      </app-link>
    </template>

    <el-submenu
      v-else
      ref="subMenu"
      :index="resolvePath(item.path)"
      popper-append-to-body
    >
      <template slot="title">
        <item
          v-if="item.meta"
          :icon="item.meta && item.meta.icon"
          :title="generateTitle(item.meta.title)"
        />
      </template>
      <sidebar-item
        v-for="child in item.children"
        :key="child.path"
        :is-nest="true"
        :item="child"
        :base-path="resolvePath(child.path)"
        class="nest-menu"
        @click="toggleDrawer"
      />
    </el-submenu>
  </div>
</template>

<script>
import path from 'path'
import { isExternal } from '@/utils/validate'
import Item from './Item'
import AppLink from './Link'
import FixiOSBug from './FixiOSBug'
import { generateTitle } from "@/utils/i18n";

export default {
  name: 'SidebarItem',
  components: { Item, AppLink },
  mixins: [FixiOSBug],
  props: {
    // route object
    item: {
      type: Object,
      required: true
    },
    isNest: {
      type: Boolean,
      default: false
    },
    basePath: {
      type: String,
      default: ''
    }
  },
  data () {
    // To fix https://github.com/PanJiaChen/vue-admin-template/issues/237
    // TODO: refactor with render function
    this.onlyOneChild = null
    return {}
  },
  methods: {
    generateTitle,
    hasOneShowingChild (children = [], parent) {
      const showingChildren = children.filter(item => {
        if (item.hidden) {
          return false
        } else {
          // Temp set(will be used if only has one showing child)
          this.onlyOneChild = item
          return true
        }
      })

      // When there is only one child router, the child router is displayed by default
      if (showingChildren.length === 1) {
        return true
      }

      // Show parent if there are no child router to display
      if (showingChildren.length === 0) {
        this.onlyOneChild = { ...parent, path: '', noShowingChildren: true }
        return true
      }

      return false
    },
    toggleDrawer () {
      this.$store.dispatch('app/toggleDrawer')
    },
    resolvePath (routePath) {
      if (isExternal(routePath)) {
        return routePath
      }
      if (isExternal(this.basePath)) {
        return this.basePath
      }
      return path.resolve(this.basePath, routePath)
    }
  }
}
</script>

页面内使用路由

<div style="font-size: 18px; font-weight: 600">
        {{ generateTitle($route.matched[0].meta.title) }}
</div>

created () {
      this.title = this.generateTitle(this.$route.matched[0].meta.title);
  },

import { generateTitle } from "@/utils/i18n";

methods: {
    generateTitle,
}