在旧版本的vue-cli中是在build目录下dev-sever.js中添加数据接口
vue-cli升级到2.9.1之后，把webpack升级到了v3.6.0，里边去掉了dev-server和dev-client两个文件，改在webpack.dev.conf.js设置
1、找到build文件夹
2、找到文件，webpack.dev.conf.js文件
3、找到const portfinder = require('portfinder')这句话添加下面代码
const axios = require('axios');const express = require('express');const apiRoutes = express.Router();4、找到const devWebpackConfig=merge(baseWebpackConfig,{}里面的devServer添加代码
const devWebpackConfig = merge(baseWebpackConfig, { module: { rules: utils.styleLoaders({ sourceMap: config.dev.cssSourceMap, usePostCSS: true }) }, // cheap-module-eval-source-map is faster for development devtool: config.dev.devtool, // these devServer options should be customized in /config/index.js devServer: { clientLogLevel: 'warning', historyApiFallback: { rewrites: [ { from: /.*/, to: path.posix.join(config.dev.assetsPublicPath, 'index.html') }, ], }, hot: true, contentBase: false, // since we use CopyWebpackPlugin. compress: true, host: HOST || config.dev.host, port: PORT || config.dev.port, open: config.dev.autoOpenBrowser, overlay: config.dev.errorOverlay ? { warnings: false, errors: true } : false, publicPath: config.dev.assetsPublicPath, proxy: config.dev.proxyTable, quiet: true, // necessary for FriendlyErrorsPlugin watchOptions: { poll: config.dev.poll, }, //在这里添加一个before方法 before (apiRoutes) { apiRoutes.get('/api/getDiscList', (req, res) => { // 这里是要链接的api地址 const url = 'https://c.y.qq.com/splcloud/fcgi-bin/fcg_get_diss_by_tag.fcg'; axios.get(url, { headers: { // 配置api地址referer referer: 'https://c.y.qq.com/', // 配置api地址host host: 'c.y.qq.com' }, params: req.query // 这是请求的query }).then((response) => { // response是api地址返回的，数据在data里。 res.json(response.data) }).catch((e) => { console.log(e); }) }); app.use('/api', apiRoutes); } }