“无法加载资源：服务器响应状态为404” express docker
[英]“Failed to load resource: the server responded with a status of 404” express docker
问题描述
I got error message in browser "Failed to load resource: the server responded with a status of 404" and I am using Node/Express, Mongo Database and Docker. 
我在浏览器中收到错误消息“无法加载资源：服务器响应状态为404”，并且我正在使用Node / Express，Mongo Database和Docker。 Everything works fine without a Docker. 没有Docker，一切工作正常。
Folder structure: 资料夹结构：
- backend 后端
- server 服务器
- server.js server.js
- server.js
- server
- frontend 前端
- src src
- index.html index.html
- index.html
- src
- dist dist
- webpack.config.js webpack.config.js
- package.json package.json
- Dockerfile Docker文件
- docker-compose.yml docker-compose.yml
server.js server.js
app.use('/', express.static(__dirname + '../../dist/'));
app.get('/gallery', (req, res) => { Gallery.find({}, {name: 1, path: 1, _id: 0, image: 1}).then( gallery => { res.json({gallery}); }, e => { res .status(500) .send(e) .send('Undefined error'); }, ); });
index.html index.html
<!DOCTYPE html> <html lang="en"> <head> <meta charset="UTF-8"> <meta name="viewport" content="width=device-width, initial-scale=1, shrink-to-fit=no"> <title>Gallery</title> <base href="/"> <link href="https://fonts.googleapis.com/css?family=Roboto:400,500,700" rel="stylesheet"> </head> <body> <div id="root"></div> <script type="text/javascript" src="dist/frontend-output.js"></script> </body> </html>
webpack.config.js
const frontend = { resolve: { modules: [path.resolve(__dirname, 'frontend'), 'node_modules'], }, mode: 'development', entry: './frontend/js/index.js', output: { path: path.resolve(__dirname, '/dist/'), publicPath: '/', filename: 'frontend-output.js', }, module: { rules: [ { test: /\\.(js)$/, exclude: /node_modules/, use: { loader: 'babel-loader', options: { presets: ['env', 'stage-0', 'react'], }, }, }, {test: /\\.css$/, use: ['style-loader', 'css-loader']}, {test: /\\.(jpe?g|png|gif|svg)$/i, use: ['url-loader', 'file-loader']}, { test: /\\.(jpe?g|png|ttf|eot|gif|svg|woff(2)?)(\\?[a-z0-9=&.]+)?$/, use: 'base64-inline-loader?limit=1000&name=[name].[ext]', }, ], }, plugins: [ new HtmlWebpackPlugin({ publicPath: '/', template: './frontend/src/index.html', }), ], devServer: { historyApiFallback: true, }, };
package.json {scripts} package.json {脚本}
FROM node:latest
WORKDIR /app
COPY . /app
EXPOSE 3000
Dockerfile Docker文件
version: "3"
services:
app:
container_name: projectX
image: docker-node-express-mongoapp
restart: always
build: .
command: npm run start
ports:
- "3000:3000"
mongo:
container_name: mongo
image: mongo
command: ["mongod", "--bind_ip_all"]
volumes:
- /app:/data/configdb
- mongo-data:/data/db
ports:
- "27017:27017"
volumes:
mongo-data:
docker-compose.yml docker-compose.yml
version: "3"
If I type in the browser "192.168.99.100:3000/gallery" I had only data (json) response from database but not any html/css code. 如果我在浏览器中输入“ 192.168.99.100:3000/gallery”，则只有数据库的数据（json）响应，而没有任何html / css代码。
When I try manually send index.html to the browser with: 当我尝试通过以下方式手动将index.html发送到浏览器时：
app.get('/', function(request, response) { response.sendFile(path.resolve(__dirname + '../../../frontend/src/index.html'), ); });
I have problem with load frontend-output.js. 我对load frontend-output.js有问题。 (404 not found) （找不到404）
Thank you very much for help :) 非常感谢您的帮助:)
1 个解决方案
解决方案1
0 已采纳 2018-08-23 17:34:43
PROBLEM SOLVED !!! 问题解决了 ！！！ to dockerfile add: 到dockerfile添加：
- EXPOSE 3000 博览会3000
- EXPOSE 8080 展览8080
to docker-compose.yml add: 到docker-compose.yml添加：
- ports: 端口：
- "8080:8080" “ 8080：8080”
- "3000:3000" “ 3000：3000”
and set port for devServer in webpack.config.js 并在webpack.config.js中设置devServer的端口
- port: 8080 端口：8080
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