在使用vue开发过程中,难免需要去本地数据地址进行请求,而原版配置在dev-server.js
中,新版vue-webpack-template
已经删除dev-server.js
,改用webpack.dev.conf.js
代替,所以 配置本地访问在webpack.dev.conf.js
里配置即可。
现在我们就来用node里的express来解决本地数据请求的问题。主要为下面三步:安装express和resource、注册并使用vue-resource、配置express并设置路由规则
1、安装node的express,和vue-resource
2、注意: 这里安装vue-resource
后需要在main.js
注册并使用下
import VueResource from ‘vue-resource‘ Vue.use(VueResource)
3、在webpack.dev.conf
配置express并设置路由规则
#webpack.dev.conf.js // 首先在const portfinder = require(‘portfinder‘)后添加 // nodejs开发框架express,用来简化操作 const express = require(‘express‘) // 创建node.js的express开发框架的实例 const app = express() // 引用的json地址 var appData = require(‘../data.json‘) // json某一个key var goods = appData.result var apiRoutes = express.Router() app.use(‘/api‘, apiRoutes)
(1)get请求配置
#webpack.dev.conf.js // 在devServer选项中添加以下内容 before(app) { app.get(‘/api/someApi‘, (req, res) => { res.json({ // 这里是你的json内容 }) }) }
注意: 修改配置文件完毕后,需要重新运行命令npm run dev
即可。
(2)post请求配置。如果要配置post请求,需要在该文件夹配置如下:
#webpack.dev.conf.js apiRoutes.post(‘/foods‘, function (req, res) { //注意这里改为post就可以了 res.json({ error: 0, data: foods }); }) // 在组件里面 #...vue created () { this.$http.post(‘http://localhost:8080/api/foods‘).then((res) => { console.log(res) }) }
(3)完整配置
‘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‘) const HOST = process.env.HOST const PORT = process.env.PORT && Number(process.env.PORT) //增加express --start const express = require(‘express‘) const app = express() var appData = require(‘../goods.json‘) var goods = appData.goods var apiRoutes = express.Router() app.use(‘/api‘, apiRoutes) //增加express --end 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, }, //增加express --start before(app) { app.get(‘/api/goods‘, (req, res) => { res.json({ code: 0, data: goods }) }) } //增加express --end }, 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: [‘.*‘] } ]) ] }) 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) } }) })
4、检测 npm run dev
后,在浏览器地址栏中输入http://localhost:8080/api/goods
即可看到数据
注意:新建goods.json
引入时候的路径
在使用中有个粗心的位置,就是npm run dev的时候总是报错:missing scripts dev,导致项目启动不了。
考虑到可能是package.json文件里的scripts里面没有dev导致,所以查看,结果却有:
最后就是粗心导致的问题,原来我是在 cd vueCli 这个目录下去 npm run dev 的,所以肯定会missing scripts dev;改成cd exprice目录下去 npm run dev 就行了。所以一定得细心啊。
原文地址:https://www.cnblogs.com/goloving/p/8695346.html