Vue二次封装axios流程详解

import axios from "axios";

'use strict'
// Template version: 1.3.1
// see http://vuejs-templates.github.io/webpack for documentation.
const path = require('path')
module.exports = {
  dev: {
    // Paths
    assetsSubDirectory: 'static',
    assetsPublicPath: '/',
    proxyTable: {
      '/': {
        target: 'http://localhost:8080',
        changeOrigin: true,
        pathRewrite: {
          '^/': ''
        }
      },
      '/ws/*': {
        target: 'ws://127.0.0.1:8080',
        ws: true
      }
    },
    // Various Dev Server settings
    host: 'localhost', // can be overwritten by process.env.HOST
    port: 8082, // can be overwritten by process.env.PORT, if port is in use, a free one will be determined
    autoOpenBrowser: false,
    errorOverlay: true,
    notifyOnErrors: true,
    poll: false, // https://webpack.js.org/configuration/dev-server/#devserver-watchoptions-
    // Use Eslint Loader?
    // If true, your code will be linted during bundling and
    // linting errors and warnings will be shown in the console.
    useEslint: true,
    // If true, eslint errors and warnings will also be shown in the error overlay
    // in the browser.
    showEslintErrorsInOverlay: false,
    /**
     * Source Maps
     */
    // https://webpack.js.org/configuration/devtool/#development
    devtool: 'cheap-module-eval-source-map',
    // If you have problems debugging vue-files in devtools,
    // set this to false - it *may* help
    // https://vue-loader.vuejs.org/en/options.html#cachebusting
    cacheBusting: true,
    cssSourceMap: true
  },
  build: {
    // Template for index.html
    index: path.resolve(__dirname, '../dist/index.html'),
    // Paths
    assetsRoot: path.resolve(__dirname, '../dist'),
    assetsSubDirectory: 'static',
    assetsPublicPath: '/',
    /**
     * Source Maps
     */
    productionSourceMap: true,
    // https://webpack.js.org/configuration/devtool/#production
    devtool: '#source-map',
    // Gzip off by default as many popular static hosts such as
    // Surge or Netlify already gzip all static assets for you.
    // Before setting to `true`, make sure to:
    // npm install --save-dev compression-webpack-plugin
    productionGzip: false,
    productionGzipExtensions: ['js', 'css'],
    // Run the build command with an extra argument to
    // View the bundle analyzer report after build finishes:
    // `npm run build --report`
    // Set to `true` or `false` to always turn it on or off
    bundleAnalyzerReport: process.env.npm_config_report
  }
}

/****   request.js   ****/
// 导入axios
import axios from 'axios'
// 使用element-ui Message做消息提醒
import { Message} from 'element-ui';
//1. 创建新的axios实例，
const service = axios.create({
  // 公共接口--这里注意后面会讲
  baseURL: process.env.BASE_API,
  // 超时时间 单位是ms，这里设置了3s的超时时间
  timeout: 3 * 1000
})
// 2.请求拦截器
service.interceptors.request.use(config => {
  //发请求前做的一些处理，数据转化，配置请求头，设置token,设置loading等，根据需求去添加
  config.data = JSON.stringify(config.data); //数据转化,也可以使用qs转换
  config.headers = {
    'Content-Type':'application/json' //配置请求头
  }
  //如有需要：注意使用token的时候需要引入cookie方法或者用本地localStorage等方法，推荐js-cookie
  //const token = getCookie('名称');//这里取token之前，你肯定需要先拿到token,存一下
  //if(token){
  //config.params = {'token':token} //如果要求携带在参数中
  //config.headers.token= token; //如果要求携带在请求头中
  //}
  return config
}, error => {
  Promise.reject(error)
})
// 3.响应拦截器
service.interceptors.response.use(response => {
  //接收到响应数据并成功后的一些共有的处理，关闭loading等
  return response
}, error => {
  /***** 接收到异常响应的处理开始 *****/
  if (error && error.response) {
    // 1.公共错误处理
    // 2.根据响应码具体处理
    switch (error.response.status) {
      case 400:
        error.message = '错误请求'
        break;
      case 401:
        error.message = '未授权，请重新登录'
        break;
      case 403:
        error.message = '拒绝访问'
        break;
      case 404:
        error.message = '请求错误,未找到该资源'
        window.location.href = "/NotFound"
        break;
      case 405:
        error.message = '请求方法未允许'
        break;
      case 408:
        error.message = '请求超时'
        break;
      case 500:
        error.message = '服务器端出错'
        break;
      case 501:
        error.message = '网络未实现'
        break;
      case 502:
        error.message = '网络错误'
        break;
      case 503:
        error.message = '服务不可用'
        break;
      case 504:
        error.message = '网络超时'
        break;
      case 505:
        error.message = 'http版本不支持该请求'
        break;
      default:
        error.message = `连接错误${error.response.status}`
    }
  } else {
    // 超时处理
    if (JSON.stringify(error).includes('timeout')) {
      Message.error('服务器响应超时，请刷新当前页')
    }
    error.message = '连接服务器失败'
  }
  Message.error(error.message)
  /***** 处理结束 *****/
  //如果不需要错误处理，以上的处理过程都可省略
  return Promise.resolve(error.response)
})
//4.导入文件
export default service

/****   http.js   ****/
// 导入封装好的axios实例
import request from './request'
const http ={
  /**
   * methods: 请求
   * @param url 请求地址
   * @param params 请求参数
   */
  get(url,params){
    const config = {
      method: 'get',
      url:url
    }
    if(params) config.params = params
    return request(config)
  },
  post(url,params){
    const config = {
      method: 'post',
      url:url
    }
    if(params) config.data = params
    return request(config)
  },
  put(url,params){
    const config = {
      method: 'put',
      url:url
    }
    if(params) config.params = params
    return request(config)
  },
  delete(url,params){
    const config = {
      method: 'delete',
      url:url
    }
    if(params) config.params = params
    return request(config)
  }
}
//导出
export default http

import request from "@/utils/request.js";
import qs from "qs";
const baseUrl = '/api/jwt/auth'
//登录
export function authCodeLogin(params) {
  return request({
    url: baseUrl + "/authCodeLogin/" + params.code,
    method: "get",
  });
}
//退出
export function authLogout(params) {
  return request({
    url: baseUrl + "/logout",
    method: "get",
  });
}
//获取用户数据
export function getUserInfo(params) {
  return request({
    url: baseUrl + "/getUserInfo",
    method: "get",
    params:qs.stringfy(params)
  });
}
//其实，也不一定就是params，也可以是 query 还有 data 的呀！
//params是添加到url的请求字符串中的，用于get请求。会将参数加到 url后面。所以，传递的都是字符串。无法传递参数中含有json格式的数据
//而data是添加到请求体（body）中的， 用于post请求。添加到请求体（body）中，json 格式也是可以的。

import { authCodeLogin  } from '@/api/api.js'
   getModellogin(code){
      let params = {
        code: code,
      }
      authCodeLogin(params).then(res=>{
        if (res.code === 200) {
          localStorage.clear()
          // 菜单
          this.$store.dispatch('saveMenu', [])
          // this.getFloorMenu()
          // this.getmenu()
          this.$router.push('/')
        }else{
          console.log('error');
        }
      })
    },