由于某种原因，Heroku 忽略了我的 .env 文件，即使 Express 显示了要使用的端口等。我收到此错误
Web process failed to bind to $PORT within 60 seconds
我阅读了其他有关删除 dotenv 的解决方案，但如果我这样做，它会使我的应用程序崩溃。我需要 dotenv 来获取 env 变量，有没有办法为 heroku 设置 .env 或者在 heroku 上部署 Express + React + Postgress 应用程序的最佳解决方案是什么？
这是我的个人资料
web: node app.js
app.js
var express = require('express');
var app = express();
var userRoute = require('./routes/users');
var postRoute = require('./routes/posts');
var bodyParser = require('body-parser');
var logger = require('morgan');
var session = require('express-session');
var cookieParser = require('cookie-parser') ;
var dotenv = require('dotenv');
var env = dotenv.config();
var cors = require('cors');
var models = require('./models/');
const PORT = process.env.PORT || 8000;
const passport = require('passport');
const path = require('path');
// const allowOrigin = process.env.ALLOW_ORIGIN || '*'
// CORS Middleware
if (!process.env.PORT) {
require('dotenv').config()
}
// console.log(process.env.DATABASE_URL);
if (!process.env.PORT) {
console.log('[api][port] 8000 set as default')
console.log('[api][header] Access-Control-Allow-Origin: * set as default')
} else {
console.log('[api][node] Loaded ENV vars from .env file')
console.log(`[api][port] ${process.env.PORT}`)
console.log(`[api][header] Access-Control-Allow-Origin: ${process.env.ALLOW_ORIGIN}`)
}
require('./config/passport-github');
require('./config/passport');
app.use(logger('dev'));
app.use(express.static(path.join(__dirname, 'public')));
app.use(express.static(path.join(__dirname, 'build')));
app.use(cookieParser());
app.use(session({
secret : process.env.JWT_SECRET,
saveUninitialized: false,
maxAge: 1000 * 60 * 60 * 84,
resave: false
}));
app.use(passport.initialize());
app.use(passport.session());
app.use(bodyParser.json());
app.use(bodyParser.urlencoded({ extended:false}));
const isAuthenticated = function(req, res, next){
if(req.isAuthenticated()){
next();
console.log('this works');
}else{
res.redirect('http://127.0.0.1:8001/signIn');
}
}
// app.use(function(req, res, next) {
// res.header('Access-Control-Allow-Origin', '*');
// // res.header('Access-Control-Allow-Credentials', true);
// res.header("preflightContinue", false)
// // res.header('Access-Control-Allow-Methods', 'GET,PUT,POST,DELETE');
// res.header('Access-Control-Allow-Headers', 'Content-Type, Authorization');
// next();
// });
app.use(cors({
'allowedHeaders': ['Content-Type'], // headers that React is sending to the API
'exposedHeaders': ['Content-Type'], // headers that you are sending back to React
'origin': '*',
'methods': 'GET,HEAD,PUT,PATCH,POST,DELETE',
'preflightContinue': false
}));
app.use('/api/users', userRoute );
app.use('/api/posts', isAuthenticated, postRoute );
app.use(function(req, res, next) {
res.locals.user = req.user; // This is the important line
// req.session.user = user
console.log(res.locals.user);
next();
});
models.sequelize.sync().then(() => {
const server = app.listen(PORT, () => {
console.log(`Server is up and running on port ${PORT}`);
});
});
package.json
{
"name": "sequelize-demo",
"version": "1.0.0",
"description": "",
"main": "index.js",
"scripts": {
"test": "echo \"Error: no test specified\" && exit 1",
"client": "cd ./client && npm start ",
"server": "nodemon app.js",
"start": "concurrently --kill-others \"npm run client\" \"npm run server\" ",
"heroku-postbuild": "cd client && npm install && npm run build"
},
"author": "",
"license": "ISC",
"dependencies": {
"async": "^2.6.1",
"bcrypt": "^3.0.2",
"body-parser": "^1.18.3",
"concurrently": "^4.1.0",
"cookie-parser": "^1.4.3",
"cookie-session": "^2.0.0-beta.3",
"cors": "^2.8.5",
"crypto": "^1.0.1",
"dotenv": "^7.0.0",
"express": "^4.16.4",
"express-flash": "0.0.2",
"express-session": "^1.15.6",
"foreman": "^3.0.1",
"jsonwebtoken": "^8.4.0",
"morgan": "^1.9.1",
"nodemailer": "^5.1.1",
"nodemon": "^1.18.9",
"passport": "^0.4.0",
"passport-github": "^1.1.0",
"passport-github2": "^0.1.11",
"passport-jwt": "^4.0.0",
"passport-local": "^1.0.0",
"pg": "^7.8.0",
"pg-hstore": "^2.3.2",
"sequelize": "^4.42.0"
},
"devDependencies": {
"chai": "^4.2.0",
"mocha": "^6.1.2"
}
}
config/database.js
if (!process.env.PG_DB) {
const fs = require('fs')
const dotenv = require('dotenv')
const envConfig = dotenv.config({silent: true})
// for (var k in envConfig) {
// process.env[k] = envConfig[k]
// }
console.log('[api][sequelize] Loaded database ENV vars from .env file')
}
module.exports = {
development: {
username: process.env.POSTGRES_USER,
password: process.env.POSTGRES_PASSWORD,
database: process.env.POSTGRES_DB,
host: process.env.POSTGRES_HOST,
dialect: 'postgres',
migrationStorageTableName: 'sequelize_meta'
},
production: {
username: "root",
password: null,
database: "*******",
host: "127.0.0.1",
dialect: "postgres"
}
}
config/config.json
{
"development": {
"username": "eli",
"password": "",
"database": "elitest4",
"host": "127.0.0.1",
"dialect": "postgres"
},
"test": {
"username": "root",
"password": null,
"database": "database_test",
"host": "127.0.0.1",
"dialect": "postgres"
},
"production": {
"username": "root",
"password": null,
"database": "*******",
"host": "127.0.0.1",
"dialect": "postgres"
}
}
client/package.json
{
"name": "client",
"version": "0.1.0",
"private": true,
"dependencies": {
"@material-ui/core": "^3.9.1",
"@material-ui/icons": "^3.0.2",
"axios": "^0.18.0",
"history": "^4.7.2",
"http-proxy-middleware": "^0.19.1",
"jsonwebtoken": "^8.4.0",
"jwt-decode": "^2.2.0",
"material-ui-icons": "^1.0.0-beta.36",
"moment": "^2.24.0",
"react": "^16.7.0",
"react-dom": "^16.7.0",
"react-redux": "^6.0.0",
"react-router-dom": "^4.3.1",
"react-scripts": "2.1.3",
"redux": "^4.0.1",
"redux-thunk": "^2.3.0",
"superagent": "^4.1.0"
},
"scripts": {
"start": "PORT=8001 react-scripts start",
"build": "react-scripts build",
"test": "react-scripts test",
"eject": "react-scripts eject",
"postinstall": "react-scripts build"
},
"eslintConfig": {
"extends": "react-app"
},
"browserslist": [
">0.2%",
"not dead",
"not ie <= 11",
"not op_mini all"
],
"devDependencies": {
"dotenv": "^6.2.0"
}
}
最佳答案
这是部署到 Heroku 时的一个简单疏忽。 Heroku 管理自己的环境变量以确保它们的安全。您不应该提交您的 .env git 或任何版本控制。在 Heorkus 的情况下，只需转到应用程序仪表板的设置选项卡中，然后单击 reveal config vars并将你的 dot env 的内容放入 ui 中。
您可以使用下面的链接将您的应用程序名称放入其中，您应该会看到设置屏幕。
https://dashboard.heroku.com/apps/<your_app_name>/settings
关于javascript - Web进程绑定(bind)$port节点失败，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/55616420/