前言：

跨域方案有很多種，既然我們用到了Vue，那么就使用vue提供的跨域方案。

解決方案：

1.修改HttpRequestUtil.js

 import axios from 'axios' export var baseurl = '/api' /** * Get請求 */ export function get(url, callback){  console.log('測試get請求')  axios.get(baseurl+url)  .then(function (response) {   console.log(response)   callback(response.data,true)  })  .catch(function (error) {   console.log(error)   callback(null,false)  }) } export default {  get }

2.修改index.js

'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: {  '/api': {   target: 'http://127.0.0.1:8088',//設置你調用的接口域名和端口號 別忘了加http   changeOrigin: true,   pathRewrite: {   '^/api': 'http://127.0.0.1:8088'//這里理解成用‘/api'代替target里面的地址，后面組件中我們掉接口時直接用api代替 比如我要調用'http://40.00.100.100:3002/user/add'，直接寫‘/api/user/add'即可   }  }  },  // Various Dev Server settings  host: 'localhost', // can be overwritten by process.env.HOST  port: 8090, // 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-  /**  * 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 of  bundleAnalyzerReport: process.env.npm_config_report } }

proxyTable: {'/api' : {target: 'http://127.0.0.1:8088' , //設置你調用的接口域名和端口號 別忘了加httpchangeOrigin: true ,pathRewrite: {'^/api' : 'http://127.0.0.1:8088' //這里理解成用‘/api'代替target里面的地址，后面組件中我們掉接口時直接用api代替 比如我要調用'http://40.00.100.100:3002/user/add'，直接寫‘/api/user/add'即可}}},