mini-program/api/request.js

const  Fly = require("../lib/wx.umd.min") //wx.js is your downloaded code
const  fly = new Fly(); //Create an instance of Fly
const app = getApp()

fly.config.timeout = 20000;
fly.config.baseURL = "https://wx.sgsino.cn"
const  newFly = new Fly(); 
newFly.config = fly.config;
let reqCount = 0 ;// 重发请求的次数
// 获取白名单
import whiteList from './whiteList';
// Add interceptors
fly.interceptors.request.use((request) => {
// console.log('进入fly-request', request);
wx.showLoading({
  'title': '加载中',
  'mask': true
});
  // 不显示加载页面的接口
  if (request.url.indexOf(whiteList.loading) === -1) {
    // 隐藏loading遮罩
    wx.hideLoading();
  }
  // 白名单内url不添加token
  if (request.url.indexOf(whiteList.nullHeaderToken) !== -1) {
    request.timeout = 30000; // 请求超时
    request.headers = {
      'content-type': 'application/json',
      'X-Tag': 'flyio'
    };
    console.log('nullHeaderToken()')
    return request;
  }
  //头文件带Authorization为请求token，不添加token
  if (request.headers.Authorization) {
    // 给所有请求添加自定义header
    request.timeout = 30000;
    Object.assign(request.headers, {
      'content-type': 'application/json',
      'X-Tag': 'flyio'
    })
    return request;
  }
//其他请求需要在头文件中自动附加token
  if(wx.getStorageSync('token')) {
     // 给所有请求添加自定义header
     request.timeout = 30000;
     Object.assign(request.headers, {
       'content-type': 'application/json',
       'X-Tag': 'flyio',
       'Authorization': `Bearer ${wx.getStorageSync('token')}`
     })
     return request;
  } 
}, (error, promise) => {
  // Do something with request error
  console.log(error); // for debug
  promise.reject(error)
});

fly.interceptors.response.use(
  (response) => {
    //正常返回
    reqCount =0;
    wx.hideLoading();
    return response
  },
  (err, promise) => {
    wx.hideLoading();
    let msg = ''; 
    if (err.status === 0) {
      msg = '网络连接异常'
    } 
    else if (err.status === 1) {
      msg = '网络连接超时'
    } 
    else if (err.status === 401) {
      reqCount += 1    
      wx.clearStorageSync('token')
            if (reqCount < 3) {
               msg = '用户已过期，正在自动刷新用户，尝试次数'+reqCount.toString();
               this.lock(); //锁定响应拦截器
               wx.login({ success(wxres)  {
                  newFly.request(
                    { url: '/auth/mobile/token/social?grant_type=mobil&mobile=MINI@'+ wxres.code,
                     method: 'post',
                     headers:{ 'Authorization': 'Basic dGVzdDp0ZXN0'}})
                     .then(res => { if (res.data.access_token) {wx.setStorageSync('token', res.data.access_token); }})
                     .finally(() => this.unlock())
                     .then(() => { return fly.request(err.request); })}})
    } 
  }
    else if (err.status === 502) {
      reqCount += 1
      if (reqCount < 3) {
        msg = '网络错误，正在进行自动重试，重试次数'+reqCount.toString();
         return fly.request(err.request);
      }    
    }       
    else {
      if (err.response.data.message) {
        msg = err.response.data.message
      } else {
        msg = '程序已3次连接失败,请稍后手动登录后再试'
      }
    }
    wx.showToast({
      title: msg,
      icon: 'none',
      duration: 3000
    });
    return promise.resolve(err)
  }
)


export default fly;