react+webpack+redux+react-router环境搭建

发布时间：2020-12-15 06:35:05 所属栏目：百科来源：网络整理

导读：第一步，新建一个文件夹，然后 npm init -yes 初始化，会生成一个 package.json 记录整个项目的依赖包信息安装 webpack cnpm i webpack webpack-dev-server --save-dev 新建以下目录文件，安装 react 包 cnpm i react react-dom redux react-redux redux-t

第一步，新建一个文件夹，然后npm init -yes初始化，会生成一个package.json记录整个项目的依赖包信息

安装webpack cnpm i webpack webpack-dev-server --save-dev

新建以下目录文件，

安装react包 cnpm i react react-dom redux react-redux redux-thunk react-router --save-dev

index.html文件内容：

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>react-weChat</title>
</head>
<body>
<div id="root"></div>
</body>
</html>

index.jsx文件内容，作为整个项目的主入口

import ReactDOM from 'react-dom';
import React,{Component} from 'react';
 
class App extends Component {
    render() {
        return <div>Hello React !!!</div>
    }
}

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

接下来开始配置webpack.config.js:
webpack四大组成部分：entry,output,module,plugins

const srcDir = __dirname + "/src";
const distDir = __dirname + "/dist";

module.exports = {
    entry: [
        srcDir + "/index.jsx" //入口
    ],output: {
        path: distDir,//打包后的文件存放地方，会自动新建
        filename: 'index.[hash:7].js'//打包后输出的文件名，后面跟7位随机hash值
    },devtool: 'source-map',devServer: {
        contentBase: './public',//本地服务器所加载的页面的目录
        historyApiFallback: true,//不跳转
        inline: true,//实时刷新
        port: 8090,//端口号
        hot: true
    },module:{},plugins:[]

再安装解析jsx的loader及插件去解析jsx和es6语法：cnpm i babel-cli babel-loader babel-preset-env babel-preset-react babel-plugin-react-transform react-transform-hmr --save-dev

module: {
        rules: [
            {
                test: /(.jsx|.js)$/,use: {
                    loader: "babel-loader",options: {
                        presets: [
                            'env','react'
                        ]
                    }
                },exclude: /node_modules/
            },//.babelrc
    {
      "presets": [
        "react","env"
      ],"env": {
        "development": {
          "plugins": [
            [
              "react-transform",{
                "transforms": [
                  {
                    "transform": "react-transform-hmr","imports": [
                      "react"
                    ],"locals": [
                      "module"
                    ]
                  }
                ]
              }
            ]
          ]
        }
      }
    }

cnpm i html-webpack-plugin --save-dev

const HtmlWebpackPlugin = require("html-webpack-plugin");//生成新的html文件

plugins: [
        
        new HtmlWebpackPlugin({//根据模板引入css,js最终生成的html文件
            filename: 'index.html',//生成文件存放路径
            template: './public/index.html',//html模板路径
        }),

cnpm i extract-text-webpack-plugin clean-webpack-plugin --save-dev

const ExtractTextPlugin = require('extract-text-webpack-plugin');//分离css和js
const CleanWebpackPlugin = require('clean-webpack-plugin');//清缓存


new ExtractTextPlugin('style.css'),//独立导出css
    new CleanWebpackPlugin('dist/*.*',{
        root: __dirname,verbose: true,dry: false
    })

cnpm i style-loader css-loader postcss-loader autoprefixer --save-dev

{
                test: /.css$/,use: [
                    {
                        loader: "style-loader" //在html中插入<style>标签
                    },{
                        loader: "css-loader",//获取引用资源，如@import,url()
                        options: {
                            modules: true,//启用css modules
                            localIdentName: '[name__[local]--[hash:base64:5]]'//指定css的类名格式，避免全局污染
                        }
                    },{
                        loader: "postcss-loader",options: {
                            plugins:[
                                require('autoprefixer')({
                                    browsers:['last 5 version']
                                })
                            ]
                        }
                    }
                ]
            },

cnpm i less sass less-loader sass-loader stylus-loader node-sass --save-dev

{
                test:/.less$/,use: [
                    {
                        loader: "style-loader"
                    },options: {
                            importLoaders:2
                        }
                    },//自动加前缀
                        options: {
                            plugins:[
                                require('autoprefixer')({
                                    browsers:['last 5 version']
                                })
                            ]
                        }

                    },{
                        loader: "less-loader"
                    }
                ]
            },{
              test:/.scss$/,use:[
                  {
                      loader: "style-loader"
                  },{
                      loader: "css-loader",options: {
                          importLoader:1,}
                  },{
                      loader: "sass-loader"
                  },{
                      loader: "postcss-loader",options: {
                          plugins:[
                              require('autoprefixer')({
                                  browsers:['last 5 version']
                              })
                          ]
                      }
                  }
              ]
            },

cnpm i file-loader url-loader --save-dev

{
    test: /.(png|jpg|gif|woff|svg|eot|woff2|tff)$/,use: 'url-loader?limit=8129',//注意后面那个limit的参数，当你图片大小小于这个限制的时候，会自动启用base64编码图片
    exclude: /node_modules/
}

再加一些webpack的插件

const webpack = require("webpack");

 new webpack.HotModuleReplacementPlugin(),//热加载插件
 new webpack.optimize.OccurrenceOrderPlugin(),new webpack.optimize.UglifyJsPlugin(),//压缩

//package.json
"scripts": {
"start": "webpack-dev-server --progress","build": "webpack --config ./webpack.production.config.js --progress && babel dist --out-dir dist"
},

完整版代码请参考：github源代码
代理：

devServer: {
    contentBase: './public',//本地服务器所加载的页面的目录
    historyApiFallback: true,//不跳转
    inline: true,//实时刷新
    port: 8090,//端口号
    hot: true,proxy:{
        '/api1':{
            target:'http://10.7.10
            107:8001',changeOrigin:true,pathRewrite:{'^/api':''}
        },'/api2':{
            target:'http://10.7.10.138:4000',pathRewrite:{'^/api2':''}
        }
},

（编辑：李大同）

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