封装axios请求

import axios from ‘axios‘
import { Message } from ‘element-ui‘
import store from ‘@/store/store‘
import qs from "qs"
import { getToken } from ‘@/utils/auth‘
import {commonParams} from ‘@/api/config‘
import router from ‘@/router/index.js‘

let cancel ,promiseArr = {}
const CancelToken = axios.CancelToken;

// 创建axios默认请求
const service = axios.create({
    baseURL: "http://localhost:8000/bpm/",
    timeout: 5000, // request timeout,
})

// 请求拦截
service.interceptors.request.use(config => {
    // 为了防止重复请求ajax
    if (promiseArr[config.url]) {
        promiseArr[config.url](‘操作取消‘)
        promiseArr[config.url] = cancel
    } else {
        promiseArr[config.url] = cancel
    }
    // 拼接公共参数
    config.params = Object.assign({},commonParams,config.params)
    //当为传统接收方式post的时候对参数进行序列化
    if (
            config.method === "put" ||
            config.method === "delete"
        ) {
            // 序列化
            config.headers = {
                ‘Content-Type‘: "application/x-www-form-urlencoded;charset=utf-8" //当post的时候请求头需要序列化
            };
            config.data = qs.stringify(config.data);
        }
    // 是否携带cookie不知
    if (store.getters.token) {
        config.headers[‘Token‘] = getToken() // 让每个请求携带token-- [‘Token‘]为自定义key 请根据实际情况自行修改
    }
    return config
}, error => {
    // Do something with request error
    console.log(error) // for debug
    Promise.reject(error)
})
// 相应拦截
service.interceptors.response.use(
    response => response,
    error => {
        if (error) {
            switch (error.response.status) {
                case 401:
                    // router.push({
                    //     path: "/login"
                    // });
                    error.response.statusText = ‘未授权，请重新登录‘
                    break;
                case 404:
                    error.response.statusText = ‘请求错误,未找到该资源‘
                    Message({
                        //  饿了么的消息弹窗组件,类似toast
                        showClose: true,
                        message: error.response.statusText,
                        type: "error",
                        center: true
                    });
                    break;
            }
          } else {
            error.response.statusText = "连接到服务器失败"
          }
        return Promise.reject(error)
    })
export default {
    //get请求
    get (url,param) {
        return new Promise((resolve,reject) => {
            service({
                method: ‘get‘,
                url,
                params: param,
                // 取消请求函数创建
                cancelToken: new CancelToken(c => {
                    cancel = c
                })
            }).then(res => {
                resolve(res)
            }).catch(error=>{
                reject(error)
            })
        })
    },
    //post请求
    post (url,param) {
        return new Promise((resolve,reject) => {
            service.post(
                url,
                param,
                // 取消请求函数创建
                {
                    cancelToken: new CancelToken(c => {
                        cancel = c
                    })
                }
            ).then(res => {
                resolve(res)
            }).catch(error=>{
                reject(error)
            })
        })
    }
}