Webpack 网页包开发服务器未生成和重新加载index.html

我正在使用WebpackV4，试图将Webpackdev服务器添加到我的项目中。我在这里面临的问题是，当我运行webpack dev server命令my时，它会在默认浏览器中打开一个本地服务器，但不会为已编译的资产提供服务，也不会监视文件的更改

我还没有实施热模块更换

这是项目结构

package.json

{
  "name": "webpack-starterkit",
  "version": "1.0.0",
  "description": "webpack starter kit",
  "main": "index.js",
  "scripts": {
    "test": "echo \"Error: no test specified\" && exit 1",
    "build": "webpack --mode production",
    "dev": "webpack --mode development",
    "start": "webpack-dev-server --mode development --open"
  },
  "author": "",
  "license": "ISC",
  "devDependencies": {
    "autoprefixer": "^8.6.3",
    "browser-sync": "^2.24.4",
    "browser-sync-webpack-plugin": "^2.2.2",
    "css-loader": "^0.28.11",
    "mini-css-extract-plugin": "^0.4.0",
    "node-sass": "^4.9.0",
    "postcss-loader": "^2.1.5",
    "sass-loader": "^7.0.3",
    "style-loader": "^0.21.0",
    "webpack": "^4.12.0",
    "webpack-cli": "^3.0.8",
    "webpack-dev-server": "^3.1.4"
  }
}

webpack.config.js

const path = require("path");
const MiniCssExtractPlugin = require("mini-css-extract-plugin");
const webpack = require("webpack");
module.exports = {
  entry: "./app/src/js/index.js",
  output: {
    filename: "bundle.js",
    path: path.resolve(__dirname, "app/dist/js"),
    publicPath: "dist/js"
  },
  devServer: {
    contentBase: path.resolve(__dirname, "app/dist"),
    port: 3000,
    hot: true
  },
  module: {
    rules: [
      {
        test: /\.(sa|sc|c)ss$/,
        use: [
          {
            loader: "style-loader"
          },
          {
            loader: MiniCssExtractPlugin.loader
          },
          {
            loader: "css-loader"
          },
          {
            loader: "postcss-loader"
          },
          {
            loader: "sass-loader"
          }
        ]
      }
    ]
  },
  plugins: [
    new MiniCssExtractPlugin({
      filename: "../css/style.css"
    }),
  ]
};

请帮助我解决此问题。

用于设置应用程序的输出目录

您试图在

“app/dist/js”

中输出所有内容，而应将其设置为

“app/dist”

，然后您可以为资产选择特定的输出路径

要在名为js的文件夹中输出javascript包，可以设置

output.filename:“js/bundle.js”

对于css，您可以在MinicsExtractPlugin选项中设置

文件名：“css/style.css”

在本例中无需设置（将从本地主机服务器的根目录提供资产）

重要提示：如果您运行生产捆绑包，然后将应用上载到与服务器根目录不同的文件夹中，则需要相应地设置

publicPath

此外，您不需要任何

devServer

选项（默认情况下用于

http://localhost:8080/

）

下面是解决方案（我将代码简化了一点），

devServer

即使使用html文件也可以正常工作

package.json

{
  "name": "webpack-starterkit",
  "version": "1.0.0",
  "description": "webpack starter kit",
  "main": "index.js",
  "scripts": {
    "test": "echo \"Error: no test specified\" && exit 1",
    "build": "webpack --mode production",
    "dev": "webpack --mode development",
    "start": "webpack-dev-server --mode development --open"
  },
  "author": "",
  "license": "ISC",
  "devDependencies": {
    "autoprefixer": "^8.6.3",
    "browser-sync": "^2.24.4",
    "browser-sync-webpack-plugin": "^2.2.2",
    "css-loader": "^0.28.11",
    "mini-css-extract-plugin": "^0.4.0",
    "node-sass": "^4.9.0",
    "postcss-loader": "^2.1.5",
    "sass-loader": "^7.0.3",
    "style-loader": "^0.21.0",
    "webpack": "^4.12.0",
    "webpack-cli": "^3.0.8",
    "webpack-dev-server": "^3.1.4"
  }
}

{
“名称”：“网页包测试”，
“版本”：“1.0.0”，
“main”：“index.js”，
“脚本”：{
“dev”：“webpack--mode=development--devtool=false”，
“开始”：“网页包开发服务器--模式=开发”
},
“许可证”：“麻省理工学院”，
“依赖性”：{
“css加载器”：“^0.28.11”，
“html网页包插件”：“^3.2.0”，
“迷你css提取插件”：“^0.4.0”，
“网页包”：“^4.12.0”，
“webpack cli”：“^3.0.8”，
网页包开发服务器“^3.1.4”
}
}

webpack.config.js

const path = require("path");
const MiniCssExtractPlugin = require("mini-css-extract-plugin");
const webpack = require("webpack");
module.exports = {
  entry: "./app/src/js/index.js",
  output: {
    filename: "bundle.js",
    path: path.resolve(__dirname, "app/dist/js"),
    publicPath: "dist/js"
  },
  devServer: {
    contentBase: path.resolve(__dirname, "app/dist"),
    port: 3000,
    hot: true
  },
  module: {
    rules: [
      {
        test: /\.(sa|sc|c)ss$/,
        use: [
          {
            loader: "style-loader"
          },
          {
            loader: MiniCssExtractPlugin.loader
          },
          {
            loader: "css-loader"
          },
          {
            loader: "postcss-loader"
          },
          {
            loader: "sass-loader"
          }
        ]
      }
    ]
  },
  plugins: [
    new MiniCssExtractPlugin({
      filename: "../css/style.css"
    }),
  ]
};

const path=require（“路径”）；
const MiniCssExtractPlugin=require（“迷你css提取插件”）；
const HtmlWebpackPlugin=require（'html-webpack-plugin'）；
module.exports={
条目：“./app/src/js/index.js”，
输出：{
path:path.resolve（uu dirname，“app/dist”），
文件名：“js/bundle.js”
},
模块：{
规则：[
{
测试：/\.css$/,，
使用：[
{loader:MiniCssExtractPlugin.loader}，
{加载程序：“css加载程序”}
]
}
]
},
插件：[
新的MinicsSextract插件({
文件名：“css/style.css”
}),
新HtmlWebpackPlugin({
模板：“./app/src/index.html”，
标题：“测试”
})
]
};

index.html

你好，世界

index.js

const path = require("path");
const MiniCssExtractPlugin = require("mini-css-extract-plugin");
const webpack = require("webpack");
module.exports = {
  entry: "./app/src/js/index.js",
  output: {
    filename: "bundle.js",
    path: path.resolve(__dirname, "app/dist/js"),
    publicPath: "dist/js"
  },
  devServer: {
    contentBase: path.resolve(__dirname, "app/dist"),
    port: 3000,
    hot: true
  },
  module: {
    rules: [
      {
        test: /\.(sa|sc|c)ss$/,
        use: [
          {
            loader: "style-loader"
          },
          {
            loader: MiniCssExtractPlugin.loader
          },
          {
            loader: "css-loader"
          },
          {
            loader: "postcss-loader"
          },
          {
            loader: "sass-loader"
          }
        ]
      }
    ]
  },
  plugins: [
    new MiniCssExtractPlugin({
      filename: "../css/style.css"
    }),
  ]
};

导入“./css/style.css”； log（“test！”）； style.css

const path = require("path");
const MiniCssExtractPlugin = require("mini-css-extract-plugin");
const webpack = require("webpack");
module.exports = {
  entry: "./app/src/js/index.js",
  output: {
    filename: "bundle.js",
    path: path.resolve(__dirname, "app/dist/js"),
    publicPath: "dist/js"
  },
  devServer: {
    contentBase: path.resolve(__dirname, "app/dist"),
    port: 3000,
    hot: true
  },
  module: {
    rules: [
      {
        test: /\.(sa|sc|c)ss$/,
        use: [
          {
            loader: "style-loader"
          },
          {
            loader: MiniCssExtractPlugin.loader
          },
          {
            loader: "css-loader"
          },
          {
            loader: "postcss-loader"
          },
          {
            loader: "sass-loader"
          }
        ]
      }
    ]
  },
  plugins: [
    new MiniCssExtractPlugin({
      filename: "../css/style.css"
    }),
  ]
};

正文{
背景色：红色；
}

文件夹结构

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@ippi，我想用webpack dev server实现开发环境。我使用生产模式构建它，工作资产正在编译并生成到“dist”文件夹。我读过的大多数关于webpack devserver的教程都是自动编译资产并观察更改的，但在我的案例中并没有发生这种情况。有什么想法吗？我猜，试着换成公共路径：“/js/”@VitaliySmolyakov，不工作