/**
 * axios 配置模塊
 * @module config
 * @see utils/request
*/

/**
 * axios具體配置對(duì)象
 * @description 包含了基礎(chǔ)路徑/請(qǐng)求前后對(duì)數(shù)據(jù)對(duì)處理，自定義請(qǐng)求頭的設(shè)置等
 */
const axiosConfig = {
 baseURL: process.env.RESTAPI_PREFIX,
 // 請(qǐng)求前的數(shù)據(jù)處理
 // transformRequest: [function (data) {
 // return data
 // }],
 // 請(qǐng)求后的數(shù)據(jù)處理
 // transformResponse: [function (data) {
 // return data
 // }],
 // 自定義的請(qǐng)求頭
 // headers: {
 // 'Content-Type': 'application/json'
 // },
 // 查詢對(duì)象序列化函數(shù)
 // paramsSerializer: function (params) {
 // return qs.stringify(params)
 // },
 // 超時(shí)設(shè)置s
 timeout: 10000,
 // 跨域是否帶Token 項(xiàng)目中加上會(huì)出錯(cuò)
 // withCredentials: true,
 // 自定義請(qǐng)求處理
 // adapter: function(resolve, reject, config) {},
 // 響應(yīng)的數(shù)據(jù)格式 json / blob /document /arraybuffer / text / stream
 responseType: 'json',
 // xsrf 設(shè)置
 xsrfCookieName: 'XSRF-TOKEN',
 xsrfHeaderName: 'X-XSRF-TOKEN',
 // 下傳和下載進(jìn)度回調(diào)
 onUploadProgress: function (progressEvent) {
 Math.round(progressEvent.loaded * 100 / progressEvent.total)
 },
 onDownloadProgress: function (progressEvent) {
 Math.round(progressEvent.loaded * 100 / progressEvent.total)
 },
 // 最多轉(zhuǎn)發(fā)數(shù)，用于node.js
 maxRedirects: 5,
 // 最大響應(yīng)數(shù)據(jù)大小
 maxContentLength: 2000,
 // 自定義錯(cuò)誤狀態(tài)碼范圍
 validateStatus: function (status) {
 return status >= 200 && status < 300
 }
 // 用于node.js
 // httpAgent: new http.Agent({ keepAlive: true }),
 // httpsAgent: new https.Agent({ keepAlive: true })
}
/** 導(dǎo)出配置模塊 */
export default axiosConfig

const request = axios.create(config)

// 請(qǐng)求攔截器
request.interceptors.request.use(
 config => {
 // 觸發(fā)loading效果
 store.dispatch('SetLoding', true)
 return config
 },
 error => {
 return Promise.reject(error)
 }
)

// 返回狀態(tài)判斷(添加響應(yīng)攔截器)
request.interceptors.response.use(

 (res) => {
 // 加載loading
 store.dispatch('SetLoding', false)
 // 如果數(shù)據(jù)請(qǐng)求失敗
 let message = ''
 let prefix = res.config.method !== 'get' ? '操作失敗：' : '請(qǐng)求失?。?
 switch (code) {
  case 400: message = prefix + '請(qǐng)求參數(shù)缺失'; break
  case 401: message = prefix + '認(rèn)證未通過(guò)'; break
  case 404: message = prefix + '此數(shù)據(jù)不存在'; break
  case 406: message = prefix + '條件不滿足'; break
  default: message = prefix + '服務(wù)器出錯(cuò)了'; break
 }
 let error = new Error(message)

 if (tip) {
  errorTip(vueInstance, error, message)
 }
 let result = { ...res.data, error: error }
 return result
 },
 (error, a, b) => {
 store.dispatch('SetLoding', false)
 process.env.NODE_ENV !== 'production' && console.log(error)
 return { data: null, code: 500, error: error }
 }
)

 state: {
 loading: 0
 },
 mutations: {
 SET_LOADING: (state, loading) => {
  loading ? ++state.loading : --state.loading
 },
 CLEAN_LOADING: (state) => {
  state.loading = 0
 }
 },
 actions: {
 SetLoding ({ commit }, boolean) {
  commit('SET_LOADING', boolean)
 },
 CLEANLOADING ({commit}) {
  commit('CLEAN_LOADING')
 }
 },
 getters: {
 loading (state) {
  return state.loading
 }
 }

router.beforeEach((to, from, next) => {
 store.dispatch('CLEANLOADING')
 next()
})

<div class="request-loading" :class="{'request-loading-show':loading}">
 <div class="request-loading-main" ></div>
</div>

import { mapGetters } from 'vuex'
export default { 
 data () {
 
 }
 computed: {
 ...mapState(['loading]) 
 }
<scrirpt lang="scss" scoped>
//這個(gè)我就不寫了 loading樣式不同 我們代碼也就不同
</script>