0、先建一个json文件：data.json 放在跟目录下
1、使用json-server这个工具，可以虚构出后端接口对应的数据，然后在项目里发送特定的请求，就可以发请求拿到模拟的数据，首先npm安装
npm install json-server --save
2、在build/webpack.dev.conf.js中进行配置
'use strict'
const utils = require('./utils')
const webpack = require('webpack')
const config = require('../config')
const merge = require('webpack-merge')
const path = require('path')
const baseWebpackConfig = require('./webpack.base.conf')
const CopyWebpackPlugin = require('copy-webpack-plugin')
const HtmlWebpackPlugin = require('html-webpack-plugin')
const FriendlyErrorsPlugin = require('friendly-errors-webpack-plugin')
const portfinder = require('portfinder')
// 第一步
// const express = require('express')
// const app = express()
//
// var appData = require('../data.json')
// var seller = appData.seller
// var goods = appData.goods
// var ratings = appData.ratings
//
// var apiRoutes = express.Router()
// app.use('/api',apiRoutes)
const HOST = process.env.HOST
const PORT = process.env.PORT && Number(process.env.PORT)
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,
},
// 第二步
// before(app) {
// app.get('/api/seller', (req,res) => {
// res.json({
// errno: 0,
// data: seller
// })//接口返回json数据，上面配置的数据seller就赋值给data
// }),
// app.get('/api/goods', (req,res) => {
// res.json({
// errno: 0,
// data: goods
// })//接口返回json数据，上面配置的数据goods就赋值给data
// }),
// app.get('/api/ratings', (req,res) => {
// res.json({
// errno: 0,
// data: ratings
// })//接口返回json数据，上面配置的数据ratings就赋值给data
// })
// }
},
plugins: [
new webpack.DefinePlugin({
'process.env': require('../config/dev.env')
}),
new webpack.HotModuleReplacementPlugin(),
new webpack.NamedModulesPlugin(), // HMR shows correct file names in console on update.
new webpack.NoEmitOnErrorsPlugin(),
// https://github.com/ampedandwired/html-webpack-plugin
new HtmlWebpackPlugin({
filename: 'index.html',
template: 'index.html',
inject: true
}),
// copy custom static assets
new CopyWebpackPlugin([
{
from: path.resolve(__dirname, '../static'),
to: config.dev.assetsSubDirectory,
ignore: ['.*']
}
])
]
})
// json-server配置信息
const jsonServer = require('json-server')
const apiServer = jsonServer.create()
const apiRouter = jsonServer.router('data.json') // 数据关联server，data.json与index.html同级
const middlewares = jsonServer.defaults()
apiServer.use(middlewares)
apiServer.use('/api',apiRouter)
apiServer.listen(3000, () => { // 监听端口
console.log('JSON Server is running')
})
module.exports = new Promise((resolve, reject) => {
portfinder.basePort = process.env.PORT || config.dev.port
portfinder.getPort((err, port) => {
if (err) {
reject(err)
} else {
// publish the new Port, necessary for e2e tests
process.env.PORT = port
// add port to devServer config
devWebpackConfig.devServer.port = port
// Add FriendlyErrorsPlugin
devWebpackConfig.plugins.push(new FriendlyErrorsPlugin({
compilationSuccessInfo: {
messages: [`Your application is running here: http://${devWebpackConfig.devServer.host}:${port}`],
},
onErrors: config.dev.notifyOnErrors
? utils.createNotifierCallback()
: undefined
}))
resolve(devWebpackConfig)
}
})
})
配置完成以后，npm run dev 启动，浏览器输入localhost:3000，出现如下图，说明配置成功
访问 data.json 数据
3、代码的服务端接口是80，json-server的服务端端口是3000，由于浏览器的同源策略问题，这样请求会存在一个跨域问题，所以这里要做一个服务端代理的配置，配置build/index.js中的 proxyTable:
'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://localhost:3000',
pathRewrite: {
'^/api': '/'
},
changeOrigin: false
}
},
// Various Dev Server settings
host: 'localhost', // can be overwritten by process.env.HOST
port: 80, // 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
}
}
这样就可以在localhost:80下访问接口了
4、在 vue 代码中可以发送 ajax 请求
created: function () {
this.$http.get('/api/seller').then((response) => {
this.seller = response.data
console.log(this.seller)
})
},
来源：http://www.cnblogs.com/kiloyip/p/8568230.html