webpack构建react多页面应用

写这个的初衷是很难找一个简洁的项目脚手架,很多脚手架都有很多依赖,光看依赖就要很久,所以自己参照网上的内容,弄个这么一个简单的多页面的脚手架。

利用creat-react-app 新建一个react应用

npm install -g create-react-app

然后创建一个项目

create-react-app demo

create-react-app会自动初始化一个脚手架并安装 React 项目的各种必要依赖,如果在过程中出现网络问题,请用cnpm淘宝镜像安装。
然后我们进入项目并启动。

cd demo

然后启动项目

npm start

那就会看到如下页面

 
E84870BA-D45F-4947-AF52-1425143E6225.png

然后进入src/App.js,用下面代码替换App.js中的代码(因为在webpack中暂时不想处理图片和icon)

import React, { Component } from 'react';
import './App.css';

class App extends Component {
  render() {
    return (
      <div className="App">
        <div className="App-header">
          <h2>Welcome to App</h2>
        </div>
        <p className="App-intro">
          To get started, edit <code>src/App.js</code> and save to reload.
        </p>
      </div>
    );
  }
}

export default App

然后将 index.js 中的 内容替换为如下代码(删除registerServiceWorker)

import React from 'react';
import ReactDOM from 'react-dom';
import './index.css';
import App from './App';


ReactDOM.render(<App />, document.getElementById('root'));

然后删除src下面的registerServiceWorker.js(该文件用于构建pwa应用用的,暂时我们用不了)和 logo.svg文件(不想处理图片文件)和 App.test.js(用于测试用的)。
现在src/下面有四个文件。接下来,在src下面新建两个文件夹 app1和 app2,分别将原来的四个文件拷贝进入app1和app2。文件目录如下:

 
53337069-7D74-40F6-BF8C-AF739BD08B48.png

接下来,进入public文件下,删除favicon.ico(不想处理)和 manifest.json(构建pwa用的),然后将index.html中的内容用如下内容替换

<!doctype html>
<html lang="en">
  <head>
    <meta charset="utf-8">
    <meta name="viewport" content="width=device-width, initial-scale=1, shrink-to-fit=no">
    <meta name="theme-color" content="#000000">
    <title>React App</title>
  </head>
  <body>
    <noscript>
      You need to enable JavaScript to run this app.
    </noscript>
    <div id="root"></div>
  </body>
</html>

这个index.html就是我们的模版html。

进入正题,开始install webpack和配置webpack

1.安装依赖。将package.json文件用下面的文件替代

{
  "name": "demo",
  "version": "0.1.0",
  "private": true,
  "dependencies": {
    "react": "^15.6.1",
    "react-dom": "^15.6.1"
  },
  "devDependencies": {
    "babel-core": "^6.26.0",
    "babel-loader": "^7.1.2",
    "babel-preset-es2015": "^6.24.1",
    "babel-preset-react": "^6.24.1",
    "clean-webpack-plugin": "^0.1.16",
    "css-loader": "^0.28.7",
    "extract-text-webpack-plugin": "^3.0.0",
    "file-loader": "^1.0.0",
    "glob": "^7.1.2",
    "html-webpack-plugin": "^2.30.1",
    "postcss-loader": "^2.0.6",
    "style-loader": "^0.18.2",
    "url-loader": "^0.5.9",
    "webpack": "^3.5.6",
    "webpack-dev-server": "^2.8.1"
  },
  "scripts": {
    "start": "webpack-dev-server --open",
    "build": "webpack"
  }
}

2.删除当前目录中的node_modules,然后重新在控制台执行

npm i 

3.在根目录下也就是/demo下新建一个webpack.config.js文件,写入如下代码

const webpack = require('webpack');
const glob = require('glob');
const path = require('path');
const HtmlWebpackPlugin = require('html-webpack-plugin');
const ExtractTextPlugin = require('extract-text-webpack-plugin');
const CleanWebpackPlugin = require('clean-webpack-plugin');

const webpackConfig = {
    entry: {},
    output:{
        path:path.resolve(__dirname, './dist/'),
        filename:'[name].[chunkhash:6].js'
    },
    //设置开发者工具的端口号,不设置则默认为8080端口
    devServer: {
        inline: true,
        port: 8181
    },
    module:{
        rules:[
            {
                test:/.js?$/,
                exclude:/node_modules/,
                loader:'babel-loader',
                query:{
                    presets:['es2015','react']
                }
            },
            {
                test: /.(scss|sass|css)$/, 
                loader: ExtractTextPlugin.extract({fallback: "style-loader", use: "css-loader"})
            },
            
        ]
    },
    plugins: [
        new ExtractTextPlugin("[name].[chunkhash:6].css"),
        new CleanWebpackPlugin(
            ['dist'],  
            {
                root: __dirname,                 
                verbose:  true,                  
                dry:      false                  
            }
        )
    ],
};

// 获取指定路径下的入口文件
function getEntries(globPath) {
    const files = glob.sync(globPath),
      entries = {};
    files.forEach(function(filepath) {
        const split = filepath.split('/');
        const name = split[split.length - 2];
        entries[name] = './' + filepath;
    });
    return entries;
}
       
const entries = getEntries('src/**/index.js');

Object.keys(entries).forEach(function(name) {
   webpackConfig.entry[name] = entries[name];
   const plugin = new HtmlWebpackPlugin({
       filename: name + '.html',
       template: './public/index.html',
       inject: true,
       chunks: [name]
   });
   webpackConfig.plugins.push(plugin);
})

module.exports = webpackConfig;

4.然后用直接执行如下代码

npm run build

成功在dist中看到你的两个页面app1和app2.
如果要自己调试用直接启用npm run start,然后在localhost:8181/app1.html查看页面进行调试。



作者:小然同学
链接:https://www.jianshu.com/p/ee8aad48bf91
來源:简书
著作权归作者所有。商业转载请联系作者获得授权,非商业转载请注明出处。
原文地址:https://www.cnblogs.com/lvhw/p/8232907.html