nuxt实现封装axios并且获取token

  "scripts": {
    "dev": "cross-env process.env.__ENV=测试地址 nuxt",
    "build": "cross-env process.env.__ENV=打包地址 nuxt build",
    "start": "nuxt start",
    "export": "nuxt export",
    "serve": "nuxt serve"
  },

env: {
  __ENV: process.env.__ENV
},

axios.defaults.baseURL?=?process.env.__ENV

//修改 nuxt.config.js
//添加模块
  modules: [
    'cookie-universal-nuxt',
    "@nuxtjs/axios",
  ]
//添加插件引用
  plugins:[
    '@/plugins/axios',
  ]

//添加插件文件 plugins/axios.js
let isClient = process.env.VUE_ENV === 'client' //区分端
export default ({ redirect, $axios, app }) => {
  $axios.onRequest(config => {
    return new Promise((resolve, reject) => {
      //match api
      let token = app.$cookies.get('token')
      //add token
      if (token) config.headers.Authorization = token;
      //其他的请求前业务逻辑 比如：api map
      resolve(config);
    })
  });
  $axios.onResponse(res => {
    return new Promise((resolve, reject) => {
      //返回数据逻辑处理 比如：error_code错误处理
      resolve(res.data);
    })
  });
  $axios.onError(config => {
    console.log('Making request to ' + config.url)
  })
};

import { Message, Notification } from 'element-ui'
import Cookie from 'js-cookie'
export default function (app) {
  const axios = app.$axios
  // 基本配置
  axios.defaults.timeout = 10000
  axios.defaults.headers.post['Content-Type'] = 'application/json'
  axios.defaults.headers.patch['Content-Type'] = 'application/json'
  axios.defaults.headers.put['Content-Type'] = 'application/json'
  // 请求回调（若token从localStorage获取，接口只能在mounted之后调用）
  axios.onRequest((config) => {
    const token = Cookie.get('token')
    config.headers.Authorization = token 
  })
  // 返回回调
  axios.onResponse((response) => {
    console.log(8888,response.data)
    if (response.data.code === 200) {
      return Promise.resolve(response.data)
    } else if (response.data.code === 401) {
      Message.error('请登录后再操作');
    } else {
      Message.error(response.data.msg);
      return Promise.reject(response.data)
    }
  })
  // 错误回调
  axios.onError((error) => {
    switch (error.response.status) {
      case 401:
        location.href = '/login'
        break
    }
  })
}
// 	nuxt.config.js
plugins: [
    '@/plugins/element-ui',
    '@/plugins/axios',
    //{ src: '@/plugins/axios', ssr: false } 关闭服务端渲染
  ],
//找到modules模块，把proxy添加到里面
 modules: [
    '@nuxtjs/axios',
    '@nuxtjs/proxy'
  ],
 axios: {
    proxy: true // Can be also an object with default options
  },
  proxy: {
      '/api': {
      changeOrigin: true,
      target: 'http://127.0.0.1:8082', // 允许跨域的服务器地址
      pathRewrite: {
        '^/api': ''
      }
     }
 }

  async asyncData ({ params, $axios }) {
    const { data } = await $axios.get(`/articles/index?pageIndex=1`)
    return { data, page: 1 }
  }
  this.$axios.post('url', {})
  this.$axios.get('url', { params:{} })
  async asyncData ({ params, $axios }) {
    const [articles, category] = await Promise.all([
      $axios.$get(`/articles/category/${params.id}`),
      $axios.$get(`/categories/${params.id}`)
    ])
  }