# 一、封装axios

vue.config.js 配置文件

module.exports = {
 configureWebpack: {
  resolve: {
   alias: {
    api: '@/api',
    assets: '@/assets',
    components: '@/components',
    layouts: '@/layouts',
    router: '@/router',
    store: '@/store',
    utils: '@/utils',
    views: '@/views'
   }
  }
 },
 devServer: {
  //端口
  port: 8081,
  //后端接口
  proxy: {
   '/api': {
    target: 'http://localhost:8099', // 目标代理接口地址
    changeOrigin: true, // 开启代理，在本地创建一个虚拟服务端
    // ws: true, // 是否启用websockets
    pathRewrite: {
     '^/api': ''
    }
   }
  }
 }
}

request.js，封装组件

//配置axios
import axios from 'axios'

const instance = axios.create({
 baseURL: '/api',
 timeout: 6000
})


instance.defaults.headers.post['Content-Type'] = 'application/x-www-form-urlencoded'
//请求拦截器
instance.interceptors.request.use(
 function(config) {
  return config
 },
 function(error) {
  //对请求错误做些什么
  return Promise.reject(error)
 }
)
//响应拦截器
instance.interceptors.response.use(
 function(response) {
  return response.data
 },
 function(error) {
  //对响应错误做点什么
  return Promise.reject(error)
 }
)

export default function(method, url, data = '', config = '') {
 method = method.toLowerCase()
 if (method === 'post') {
  if (config !== '') {
   return instance.post(url, data, config)
  } else {
   return instance.post(url, data)
  }
 } else if (method === 'get') {
  return instance.get(url, {params: data})
 } else if (method === 'delete') {
  return instance.delete(url, {params: data})
 } else if (method === 'put') {
  return instance.put(url, data)
 } else {
  console.error('未知的method' + method)
  return false
 }
}

api.js,接口文件

import req from '@/utils/request'

/**
 * 批量查询
 * @param params
 */
export const list = params => req("get", "/resource/list", params);

具体的页面之中进行导入使用即可