404因为重新启动webpack-dev-server

当我尝试更改反应组件并保存它以查看热加载器是否更新了我的页面时，我在开发人员工具中得到了这个：

GET http://localhost:3000/public/bundle/76566a1ad7e45b834d4e.hot-update.json 404 (Not Found)hotDownloadManifest @ main.js:26hotCheck @ main.js:210check @ main.js:9288(anonymous function) @ main.js:9346
main.js:9303 [HMR] Cannot find update. Need to do a full reload!
main.js:9304 [HMR] (Probably because of restarting the webpack-dev-server)

我不知道为什么会发生这种情况。我正在尝试运行 django 作为我的后端服务器（网页包指令 https://webpack.github.io/docs/webpack-dev-server.html#combining-with-an-existing-server)

这是我的 webpack.watch.js：

var path = require('path');
var config = require("./webpack.config.js");
var Webpack = require("webpack");
var ExtractTextPlugin = require("extract-text-webpack-plugin");

var port = process.env.WEBPACK_PORT || 3000;
var host = process.env.HOST || 'localhost';

config.entry.unshift(
    "webpack-dev-server/client?http://" + host + ":" + port,
    "webpack/hot/only-dev-server"   // only prevents reload on syntax errors
);

config.plugins = [
    new Webpack.HotModuleReplacementPlugin(),
    new Webpack.NoErrorsPlugin(), // don't reload if there is an error
    new ExtractTextPlugin("style.css", {
        allChunks: true
    })
];

config.module.loaders = [
    { test: /\.css$/, exclude: /node_modules/, loader: ExtractTextPlugin.extract('style-loader', 'css-loader') },
    { test: /\.json$/, loader: 'json-loader' },
    { test: /\.jsx$/, loaders: ['react-hot', 'babel-loader'], include: path.join(__dirname, 'app') },
    { test: /\.es6$/, exclude: /node_modules/, loader: 'babel-loader?stage=0&optional=runtime'},
    { test: /\.js$/, exclude: /node_modules/, loader: 'babel-loader?stage=0&optional=runtime'},
    { test: /\.scss$/, exclude: /node_modules/, loaders: ExtractTextPlugin.extract('style-loader', 'css-loader!sass-loader') }
];

config.devServer = {
    publicPath:  config.output.publicPath,
    filename: 'main.js',
    contentBase: './public',
    hot:         true,
    // Make connection between webpack-dev-server and its runtime set inline: true
    inline:      true,
    lazy:        false,
    quiet:       true,
    noInfo:      true,
    headers:     {"Access-Control-Allow-Origin": "*"},
    stats:       {colors: true},

    // webpack-dev-server will serve built/bundled static files from host:port
    host:        "0.0.0.0",
    port:        port
};

module.exports = config;

这是我的 webpack.config.js：

module.exports = {
    entry: [
        './app/index.js'
    ],

    output: {
        path: './public/bundle',
        filename: 'main.js',
        publicPath: 'http://localhost:3000/public/bundle/'
    },

    plugins: [
        new BundleTracker({filename: './webpack-stats.json'}),
    ],

    module: {
        loaders: [
            { test: /\.css$/, exclude: /node_modules/, loader: ExtractTextPlugin.extract('style-loader', 'css-loader') },
            { test: /\.json$/, loader: 'json-loader' },
            { test: /\.jsx$/, loaders: ['react-hot', 'babel-loader'], include: path.join(__dirname, 'app') },
            { test: /\.es6$/, exclude: /node_modules/, loader: 'babel-loader?stage=0&optional=runtime'},
            { test: /\.js$/, exclude: /node_modules/, loader: 'babel-loader?stage=0&optional=runtime'},
            { test: /\.scss$/, exclude: /node_modules/, loaders: ExtractTextPlugin.extract('style-loader', 'css-loader!sass-loader') }
        ]
    },
}

而不是使用

entry: [
    './app/index.js'
],

作为您的条目

添加两个附加条目，如下所示：

entry: [
    'webpack-dev-server/client?http://localhost:3000', // WebpackDevServer host and port
    'webpack/hot/only-dev-server', // "only" prevents reload on syntax errors
    './app/index.js' // Your appʼs entry point
]