处理重复请求：没有响应完成的请求，再去请求一个相同的请求，会把之前的请求取消掉

新增一个cancelRequest.js文件

import axios from "axios"
const cancelTokens = {}export const addPending = (config) => {const requestKey = getRequestKey(config)if (cancelTokens[requestKey]) {cancelTokens[requestKey].cancel('cancel request')}const source = axios.CancelToken.source()cancelTokens[requestKey] = sourceconfig.cancelToken = source.token
}export const deletePending = (res) => {const requestKey = getRequestKey(res.config)if (cancelTokens[requestKey]) {delete cancelTokens[requestKey]}
}const getRequestKey = (config = {}) => {return config.url + config.method + JSON.stringify(config.params, config.data)
}

request.js

import axios from "axios"
import { baseUrl } from "@/config"
import { addPending, deletePending } from "./cancelRequest"
const service = axios.create({baseURL: baseUrl,timeout: 100000,
})
service.interceptors.request.use(config => {addPending(config)return config},error => {return Promise.error(error)}
)service.interceptors.response.use(success => {deletePending(success)},error => {deletePending(error)}
)export default service