目录如下

api.js （api配置）

export const api = {
  // 默认请求就是get请求
  user: {
    url: '/user',
    name: '用户信息',
    method: 'GET',
  },
}

env.js (环境配置)

// prod 生产 dev 开发
const env = "test"


const prod = {
  url: 'https://localhost:5000', // 线上环境'
  appKey: 'WX_MINI_MEHZ'
}
const dev = {
  url: 'https://localhost:5000', // 生产环境'
  appKey: 'WX_MINI_MEHZ'
}
const test = {
  url: 'https://localhost:5000', // 测试环境'
  appKey: 'WX_MINI_MEHZ'
}



const config = {
  dev,
  prod,
  test,
}

let baseURL = config[env].url;
let appKey = config[env].appKey

export  {
  baseURL,
  appKey
}

interceptors (拦截器)

import { baseURL } from './env.js'

import { api } from './api.js'

import Store from '@/store/index.js'


// 请求拦截
const fetch = (url,opt) => {
  console.log("opt",opt)
  let urls = (api[opt.url]?.url || api[url]?.url);
  let params = opt.params ? ('?'+Object.keys(opt.params).map(key=>key+'='+opt.params[key]).join('&')) : ''
  opt.url = baseURL + urls + params
  opt.method = opt.method || "GET";
  var header = {}
  if( Store.state.user.token) {
    header = { Authorization: Store.state.user.token }
  }
  opt.header = {...opt.header,...header}
  console.log("header",opt.header)
  opt.data = opt.data || {};
  return new Promise((resolve,reject) => {
    let options = {}
    Object.keys(opt).map(key=>{
     if(key !== "params") {
       return options[key] = opt[key]
     }
    })
    uni.request(options)
    .then(res => interceptorsRes(res,resolve,reject))
    .catch(err=> interceptorsErr(err,reject))
  })
}

// 响应拦截
const interceptorsRes = ([err,resp],resolve,reject) => {
  const { code } = resp.data
  if(code == 200) {
    console.log("请求成功")
  }
  if(code == 401) {
    console.log("未授权，跳转回登录页")
  }
  resolve(resp)
} 

// 异常处理
const interceptorsErr = (err,reject) => {
  console.log("网络异常",err)
  reject(err)
}


export { fetch }

index.js (导出配置)

import { fetch } from './interceptors.js'

const obj = {
  headerGET: {
    "Content-type":'application/x-www-from-urlencoded'
  },
  headerPOST: {
    "Content-type":'application/json'
  },
}

// 通用接口请求
export const reqAll = (url,params,opt={}) => {
  opt.data = params
  opt.header = obj['headerPOST']
  return fetch(url,opt)
}

// get请求
export const reqGet = (url,params,opt={}) => {
  opt.header = obj['headerGET']
  opt.method = "GET"
  opt.data = params
  return fetch(url,opt)
}

// post请求
export const reqPost = (url,params,opt={}) => {
  opt.header = obj['headerPOST']
  opt.method = "POST"
  opt.data = params
  return fetch(url,opt)
}

main.js (注入)

import { reqAll, reqGet, reqPost } from './fetch/index.js'
Vue.prototype.$reqAll = reqAll;
Vue.prototype.$reqGet = reqGet;
Vue.prototype.$reqPost = reqPost;

页面使用

    getUserInfo1() {
        this.$reqPost("user").then(res=>{
          console.log("res",res)
        })
      },

页面展示