使用vue-cli脚手架工具之后生存的目录下找到config\index.js文件

替换其中dev字段的代码：    

dev: {            
    // Paths
    assetsSubDirectory: 'static',
    assetsPublicPath: '/',
    proxyTable: {
      '/api': {
        target: 'http://localhost:8081/',  // 通过本地服务器将你的请求转发到这个地址
        changeOrigin: true,  // 设置这个参数可以避免跨域
        pathRewrite: {
          '/api': '/'
        }
      },
    },
    // Various Dev Server settings
    host: 'localhost', // can be overwritten by process.env.HOST
    port: 8080, // 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
  },

 然后找到build\webpack.dev.conf.js文件 在末尾添加代码：

const express = require('express')
var apiServer = express()
var bodyParser = require('body-parser')
apiServer.use(bodyParser.urlencoded({ extended: true }))
apiServer.use(bodyParser.json())
var apiRouter = express.Router()
var fs = require('fs')
apiRouter.route('/:apiName')
  .all(function (req, res) {
    fs.readFile('data.json', 'utf8', function (err, data) {
      if (err) throw err;
      var data = JSON.parse(data)
      if (data[req.params.apiName]) {
        res.json(data[req.params.apiName])
      }
      else {
        res.send('no such api name')
      }
    })
  })
apiServer.use(apiRouter);
apiServer.listen(8081, function (err) {
  if (err) {
    console.log(err)
    return
  }
  console.log('Listening at http://localhost:' + (8081) + '\n')
})

最后在更目录下新建data.json文件即为数据接口：

{
  "ratings": [
    {
      "username": "3******c",
      "rateTime": 1469281964000,
      "deliveryTime": 30,
      "score": 5,
      "rateType": 0,
      "text": "不错,粥很好喝,我经常吃这一家,非常赞,以后也会常来吃,强烈推荐.",
      "avatar": "http://static.galileo.xiaojukeji.com/static/tms/default_header.png",
      "recommend": [
        "南瓜粥",
        "皮蛋瘦肉粥",
        "扁豆焖面",
        "娃娃菜炖豆腐",
        "牛肉馅饼"
      ]
	}
  ]
}