vue中通过脚手架来模拟数据的通讯

来源：互联网发布：conerstone for mac 编辑：程序博客网时间：2024/05/17 09:12

vue-cli(版本更新)，由原来的2.8.1升级为2.9.1。主要改变是原来在build文件夹下的dev-server.js删掉了，增加了webpack.dev.conf.js。导致原来通过express方式引入的数据找不到

1.我们知道在2.9.1的版本中没有express。

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)

在webpack.dev.conf配置express并设置路由规则

'use strict'const utils = require('./utils')const webpack = require('webpack')const config = require('../config')const merge = require('webpack-merge')const baseWebpackConfig = require('./webpack.base.conf')const HtmlWebpackPlugin = require('html-webpack-plugin')const FriendlyErrorsPlugin = require('friendly-errors-webpack-plugin')const portfinder = require('portfinder')/* datura_lj 增加express 20171126 */const express = require('express')const app = express()var appData = require('../goods.json')//加载本地数据文件var goods = appData.goodsvar 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: true,    hot: true,    compress: true,    host: process.env.HOST || config.dev.host,    port: process.env.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,    },    /* datura_lj 增加express 20171126 */    before(app) {      app.get('/api/goods', (req, res) => {        res.json({          code: 0,          data: goods        })      })    }     /* datura_lj 增加路由规则 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    }),  ]})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://${config.dev.host}:${port}`],        },        onErrors: config.dev.notifyOnErrors        ? utils.createNotifierCallback()        : undefined      }))      resolve(devWebpackConfig)    }  })})

检测 npm run dev后，在浏览器地址栏中输入http://127.0.0.1:8080/api/goods即可看到数据
注意新建goods.json引入时候的路径

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