Question

我已经尝试了几乎所有解决该问题的方法。为<link rel="stylesheet" href="./style.css" />使用app.use(express.static('public'))等提供类型，但看来我无法为此找到解决方案。

index.js：

从'react'导入React；从'react-dom'导入{render}; 从'react-redux'导入{提供者} 导入“ ./assets/styles/app.less”；导入'bootstrap / dist / js / bootstrap.js'; 从“ ./components/base/App”导入应用；从“ ./store”导入商店

const provider =
  <Provider store={store}>
    <App />
  </Provider>

render(provider, document.getElementById('my-app'))

index.html：

<!DOCTYPE html>
<html>

<head>
  <meta http-equiv=X-UA-Compatible content="IE=edge,chrome=1">
  <meta name="viewport" content="width=device-width">
  <meta charset=utf-8>
  <meta http-equiv=Content-Type content="text/html;charset=utf-8">
  <meta name="viewport" content="width=device-width, initial-scale=1.0, maximum-scale=1.0, user-scalable=no">
  <title>XYZ</title>
  <link href="https://fonts.googleapis.com/icon?family=Material+Icons" rel="stylesheet">
  <link rel="stylesheet" href="./style.css" />
</head>

<body>
  <div id="my-app"></div>
  <script type='text/javascript' src="./bundle.js"></script>
</body>

</html>

webPack.config.js：

'use strict';
const webpack = require('webpack');

const MiniCssExtractPlugin = require("mini-css-extract-plugin");
const CopyWebpackPlugin = require('copy-webpack-plugin');
const CleanWebpackPlugin = require('clean-webpack-plugin');
const HtmlWebpackPlugin = require('html-webpack-plugin')

const plugins = [
  new CleanWebpackPlugin({
    root: __dirname,
    verbose: true,
    dry: false
  }),
  new webpack.DefinePlugin({ 'process.env.NODE_ENV': '"production"' }),
  new MiniCssExtractPlugin({ filename: "style.css", allChunks: false }),
  new CopyWebpackPlugin([
    { from: './src/index.html', to: 'index.html' },
  ]),
  new webpack.ProvidePlugin({
    Promise: 'es6-promise-promise',
    'React': 'react'
  }),
  new HtmlWebpackPlugin({
    template: './src/index.html'
  })
];

module.exports = {
  entry: ['@babel/polyfill', "./src/index.js"],
  output: {
    path: __dirname + '/dist',
    filename: "bundle.js",
    publicPath: '/'
  },
  module: {
    rules: [
      {
        test: /\.(js|jsx)$/,
        exclude: /node_modules/,
        use: {
          loader: "babel-loader"
        }
      },
      //load styles
      {
        test: /\.(sass|less|css)$/,
        use: [
          { loader: 'style-loader' },
          { loader: MiniCssExtractPlugin.loader },
          { loader: "css-loader", options: {} },
          {
            loader: "postcss-loader",
            options: {
              ident: 'postcss',
              plugins: [
                require('autoprefixer')({
                  'browsers': ['> 1%', 'last 2 versions']
                }),
              ]
            }
          },
          { loader: "less-loader", options: {} }
        ]
      },

      // Load images
      {
        test: /\.jpg/,
        use: [{
          loader: "url-loader",
          options: {
            limit: 10000,
            mimetype: "image/jpg"
          }
        }]
      },
      {
        test: /\.gif/,
        use: [{
          loader: "url-loader",
          options: {
            limit: 10000,
            mimetype: "image/gif"
          }
        }]
      },
      {
        test: /\.png/,
        use: [{
          loader: "url-loader",
          options: {
            limit: 10000,
            mimetype: "image/png"
          }
        }]
      },

      // Load fonts
      {
        test: /\.woff(\?v=[0-9]\.[0-9]\.[0-9])?$/,
        use: [{
          loader: "url-loader",
          options: {
            limit: 10000,
            mimetype: "application/font-woff"
          }
        }]
      },
      {
        test: /\.(ttf|eot|svg)(\?v=[0-9]\.[0-9]\.[0-9])?$/,
        use: [{
          loader: "file-loader"
        }]
      },
      {
        test: /\.woff(2)?(\?v=\d+\.\d+\.\d+)?$/,
        use: [{
          loader: "url-loader",
          options: {
            limit: 10000,
            mimetype: "application/font-woff"
          }
        }]
      }
    ]
  },
  plugins: plugins,
  resolve: {
    extensions: ['.js', '.jsx', '.less', '.css'],
    modules: ["src", "node_modules"]
  },
  devServer: {
    compress: true,
    disableHostCheck: true,   // That solved it
  }
}

package.json脚本标签：

"scripts": {
    "start": "webpack-dev-server --content-base dist/ --port 9000 --config webpack.config.js --watch --progress --inline --hot --history-api-fallback --mode development",
    "build": "cross-env NODE_ENV=production webpack --config webpack.config.js"
  },

npm strat运行正常，应用程序运行正常，但是当我执行npm run build时，出现错误：

**Refused to apply style from 'http://localhost:9000/style.css' because its MIME type ('text/html') is not a supported stylesheet MIME type, and strict MIME checking is enabled.**

**Refused to execute script from 'http://localhost:9000/bundle.js' because its MIME type ('text/html') is not executable, and strict MIME type checking is enabled.**

在网络部分，我得到了以下信息：

Ok response for : http://localhost:9000/bundle.js

cancled for : http://localhost:9000/style.css

帮助!!

Answer 1

I believe that the issue is due to the HtmlWebpackPlugin not providing the mimetype for the css file that has been injected with the MiniCssExtractPlugin. I've managed to solve the problem by using the HtmlWebpackLinkTypePlugin which should insert the mimetype into the css file.

/// top of file
const LinkTypePlugin = require('html-webpack-link-type-plugin').HtmlWebpackLinkTypePlugin;

....

const plugins = [
  new CleanWebpackPlugin({
    root: __dirname,
    verbose: true,
    dry: false
  }),
  new webpack.DefinePlugin({ 'process.env.NODE_ENV': '"production"' }),
  new MiniCssExtractPlugin({ filename: "style.css", allChunks: false }),
  new CopyWebpackPlugin([
    { from: './src/index.html', to: 'index.html' },
  ]),
  new webpack.ProvidePlugin({
    Promise: 'es6-promise-promise',
    'React': 'react'
  }),
  new HtmlWebpackPlugin({
    template: './src/index.html'
  }),
  new LinkTypePlugin({
    '*.css' : 'text/css'
  })
];

This should make your injected stylesheet line look like this:

<link rel="stylesheet" href="./style.css" type="text/css" />

Just a note that the *.css rule is a glob, so if your css file is hosted in a directory under your root, you will need to add something like **/*.css as your rule.

I hope this answers your question.

Answer 2

我要添加第二个答案，因为我认为可能存在其他问题。我认为MIME类型错误可能是由于CSS路径不正确。我认为它正在尝试提供错误而不是与MIME类型不匹配的css文件。尝试从HTML模板中删除以下行，并允许HtmlWebPackPlugin自动注入它。

<link rel="stylesheet" href="./style.css" />

下面是我自己的webpack.config和index.html模板，希望对您有所帮助。

webpack.config

const MiniCssExtractPlugin = require("mini-css-extract-plugin");
const HtmlWebpackPlugin = require('html-webpack-plugin');
const LinkTypePlugin = require('html-webpack-link-type-plugin').HtmlWebpackLinkTypePlugin;
const CopyPlugin = require('copy-webpack-plugin');

module.exports = {
    entry: './src/index.tsx',
    output: {
        filename: 'app/main.js'
    },
    devServer: {
        contentBase: './',
        watchContentBase: true
    },
    module: {
        rules: [
            {
                test: /\.scss$/,
                use: [{
                        loader: MiniCssExtractPlugin.loader,
                        options: {

                        }
                    },
                    "css-loader",
                    "resolve-url-loader",
                    {
                        loader: "sass-loader?sourceMap",
                        options: {
                            includePaths: [
                            ],
                            sourceMap: true
                        }
                    }
                ],
                exclude: /node_modules/
            },
            {
                test: /\.tsx?$/,
                use: {
                    loader: 'babel-loader'
                },
                exclude: /node_modules/
            },
            {
                test: /\.(eot|svg|ttf|woff|woff2)$/,
                loader: 'file-loader',
                options: {
                    publicPath: "./",
                    outputPath: "app"
                }
            }
        ]
    },
    resolve: {
        extensions: ['.tsx', '.ts', '.js']
    },
    plugins: [
        new MiniCssExtractPlugin({
            filename: './app/style.css',
        }),
        new HtmlWebpackPlugin({
            template: 'index.html'
        }),
        new LinkTypePlugin({
            '**/*.css' : 'text/css'
        }),
        new CopyPlugin([
            { from: 'assets', to: 'assets' }
        ])
    ]
};

index.html

<!DOCTYPE html>
<html>

<head>
    <meta charset="utf-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <title>My Site</title>
    <meta name="viewport" content="width=device-width, initial-scale=1">
</head>

<body>
    <div id="home_container">
</body>

</html>

Answer 3

您可以尝试添加type属性：

<link type="css" rel="stylesheet" href="src/node_modules/bootstrap/dist/css/bootstrap.css" crossorigin="anonymous">

Answer 4

我的问题是路径错误。

运行npm run build后

React 创建了静态文件，但在 index.html 中类似于 href="/static/css/main.39c237f9.chunk.css"，所以我在路径的开头添加了一个点，变成了 href="./static/css/main.39c237f9.chunk.css。

Answer 5

它似乎在 cd 或 VSCode 扩展中出错

将现有的 live server 名称更改为 style.css，错误消失。

不知道是什么问题。

我记得之前无意中创建了一个名为 abc.css 的文件夹，但我已将其删除

MIME类型（'text / html'）不是受支持的样式表MIME类型

5 个答案:

webpack.config

index.html