__webpack_hmr进入错误的端口并失败

Question

__webpack_hmr进入错误的端口并失败

Ste*_*ili 2 javascript gulp webpack webpack-hmr webpack-hot-middleware

我正在尝试热重新加载以使用我的设置.目前,它的工作原理如下 -

server.js

// this is the main server, which connects to db, serves react components, etc

const app = express();

app.get('/:params?*', (req, res) => {
  res.status(200).send(`
    <!doctype html>
    <html>
      <head>
        <meta charset="utf-8">
      </head>
      <body>
        hi
        <script src="http://localhost:3000/build/client.js"></script>
      </body>
    </html>
  `);
});

...
app.listen(5000);

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gulpfile.babel.js

const CLIENT_DEV_CONFIG = {
  entry: [
    CLIENT_ENTRY,
    'webpack-hot-middleware/client',
    'eventsource-polyfill',
  ],
  plugins: [
    new webpack.HotModuleReplacementPlugin(),
  ],
  output: {
    ...CLIENT_OUTPUT,
    publicPath: 'http://localhost:3000/build/',
  },
  module: {
    loaders: [BABEL_LOADER]
  },
}

gulp.task('client-watch', done => {
  console.log(CLIENT_DEV_CONFIG.output.publicPath);
  const opts = {
    hot: true,
    publicPath: CLIENT_DEV_CONFIG.output.publicPath,
    headers: {'Access-Control-Allow-Origin': '*'},
  };
  const app = new express();
  const compiler = webpack(CLIENT_DEV_CONFIG);
  app.use(webpackDevMiddleware(compiler, opts));
  app.use(webpackHotMiddleWare(compiler));
  app.listen(3000, (err) => {
    console.log(err || '[webpack-hot-devserver] running on 3000');
    done();
  });
});

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现在,

如果我访问localhost:5000.有用
如果我访问localhost:3000/build/client.js,它也有效

但是,如果我更新的东西我没有得到实时更新,我需要刷新... :(

查看网络选项卡,我看到一个失败的请求 http://localhost:5000/__webpack_hmr,我认为这可能是一个问题.

http://localhost:5000/__webpack_hmr 应该是 http://localhost:3000/__webpack_hmr

但是,我不知道如何纠正这个问题

Answer 1

Ste*_*ili 9

您可以在entry数组中的行中的webpack配置中指定URL,如下所示:

const CLIENT_DEV_CONFIG = {
  entry: [
    CLIENT_ENTRY,
    `webpack-hot-middleware/client?path=${HOT_SERVER_URL}/__webpack_hmr`,
    'eventsource-polyfill',
  ],
  plugins: [
    new webpack.HotModuleReplacementPlugin(),
  ],
  output: {
    ...CLIENT_OUTPUT,
    publicPath: `${HOT_SERVER_URL}/build/`,
  },
  module: {
    loaders: [
      {
        ...BABEL_LOADER,
        query: {...BABEL_QUERY, presets: [...BABEL_QUERY.presets, 'react-hmre']},
      },
    ],
  },
}

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所以这一行特别是:

`webpack-hot-middleware/client?path=${HOT_SERVER_URL}/__webpack_hmr`,

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该path选项允许设置热模块重新加载应该访问__webpack_hmr端点的位置.例如,可以将其设置为:

'webpack-hot-middleware/client?path=//localhost:3000/__webpack_hmr'

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