react ts混合双打，实现ajax的封装，以及401的特殊处理

import axios from 'axios'
import {AMDIN_EXPIRES_KEY,AMDIN_KEY,AMDIN_REFRESH_EXPIRES_KEY,AMDIN_REFRESH_KEY,COMMID_KEY,getToken,removeToken
} from '../utils/user-token'
import { showMessage } from '../utils/feedback'
import { fetchGetRefreshInfo } from './user'
import { setUserToken } from '../utils/public'
import router from '../router'// 失败的fetch 集合
let isRefreshing = false
let failedQueue: any[] = []// 创建一个axios实例
const instance = axios.create()// 添加请求拦截器
instance.interceptors.request.use((config: any) => {// 在发送请求之前做些什么const token = getToken(AMDIN_KEY)// if (token) {// config.headers.Authorization = `Bearer ${token}` // 将token设置到请求头中config.headers = {Authorization: `Bearer ${token}`,...config.headers}// }return config},(error) => {// 对请求错误做些什么return Promise.reject(error)}
)// 添加响应拦截器
instance.interceptors.response.use(async (res) => {const resData = (res.data || {}) as ResType// console.log('response - resData: ', resData)const { code, msg = '系统正在升级，稍后再试' } = resDataif ((code) === 200) {return Promise.resolve(resData as any)} else {await showMessage(msg).then(() => {return Promise.reject(resData)})}},async (error) => {// 对响应错误做点什么// if (error.response && error.response.status === 401) {//   // 判断是否为401//   const refreshToken = getToken(AMDIN_REFRESH_KEY)//   if (refreshToken) {//     try {//       // 使用refreshToken请求新的token//       const res = await fetchGetRefreshInfo()//       // 将新的token保存到localStorage//       setUserToken(res.Data.token)//       // 用新的token重新发送失败的请求//       const config = error.config//       config.headers.Authorization = `Bearer ${getToken(AMDIN_KEY)}`//       return instance(config)//     } catch (err) {//       console.error('刷新token失败', err)//       // 刷新token失败，跳转到登录页等处理//       router.navigate(`/login?commId=${getToken(COMMID_KEY)}`, {//         replace: true//       })//     }//   }// }if (error.response && error.response.status === 401) {// 特殊处理 当RefreshToken 的接口401时候，及RefreshToken token的也过期了// 如果不处理，将会死循环if (error.response.config.url.indexOf('RefreshToken') > -1) {// 刷新token失败，跳转到登录页等处理removeToken(AMDIN_KEY)removeToken(AMDIN_EXPIRES_KEY)removeToken(AMDIN_REFRESH_EXPIRES_KEY)removeToken(AMDIN_REFRESH_KEY)router.navigate(`/login?commId=${getToken(COMMID_KEY)}`, {replace: true})return}const originalRequest = error.configif (!isRefreshing) {isRefreshing = trueawait fetchGetRefreshInfo().then((res) => {// 将新的token保存到localStoragesetUserToken(res.Data.token)isRefreshing = falseconst newToken = getToken(AMDIN_KEY)processQueue(null, newToken)originalRequest.headers['Authorization'] = 'Bearer ' + newTokenreturn instance(originalRequest)}).catch((err) => {processQueue(err, null)return Promise.reject(err)})} else {return new Promise(function (resolve, reject) {failedQueue.push({ resolve, reject })}).then((token) => {originalRequest.headers['Authorization'] = 'Bearer ' + tokenreturn instance(originalRequest)}).catch((err) => {return Promise.reject(err)})}}return Promise.reject(error)}
)const processQueue = (error: any, token: string | null = null) => {failedQueue.forEach((prom) => {if (error) {prom.reject(error)} else {prom.resolve(token)}})failedQueue = []
}export default instanceexport type ResType = {code?: numberdata?: ResDataTypemsg?: string
}export type ResDataType = {[key: string]: any
}

• service.ts

// 刷新token
export async function fetchGetRefreshInfo(): Promise<ResDataType> {const url = `${REACT_APP_URL}/XXXXXXXXXXXXXXXXX/RefreshToken`return axios({url,method: 'post',headers: {Authorization: `Bearer ${refreshToken}`}})
}