Axios 请求响应拦截器 每次只发送一次请求封装

import axios from "axios";
import general from "@/utils/general";

const request =axios.create({
    baseURL:general.serverUrl
})


const requestMap =new Map() //保存每一次请求

request.interceptors.request.use(req=>{
        let oldRequest =requestMap.get(req.url) //当前请求
        if(oldRequest)//是否未响应
        { //取消上一次请求
            oldRequest.abort() //取消上次请求
            requestMap.delete(req.url) //删除对象
        }
        const coll = new AbortController()
        req.signal=coll.signal
        requestMap.set(req.url,coll)//不存在添加当前请求
    return req
},)

request.interceptors.response.use(res => {
    requestMap.delete(res.config.url)
        return res.data
    }, error => {

    if(error.code=="ERR_CANCELED")//取消后的报错自行处理
    {
        console.warn('重复的请求')
    }else{
        return Promise.reject(error)
    }

    }
)

export  default request