错误R10（启动超时）-> Web进程在启动后60秒内未能绑定到$ PORT

Question

嗨，我刚刚跟踪了Udemy类中的代码，但是打开Heroku时遇到了问题。 我是这里的新手，希望有人能帮助我

Index.js

    const express = require('express');
const app = express();

app.get('/', (req, res) => {
    res.send({ hi: 'there' });
});

const PORT = process.env.PORT || 5000;
app.listen(5000);

Package.json

{
  "name": "server",
  "version": "1.0.0",
  "description": "",
  "main": "index.js",
  "engines": {
    "node": "12.16.2",
    "npm": "6.14.4"
  },
  "scripts": {
    "start": "node index.js"
  },
  "author": "",
  "license": "ISC",
  "dependencies": {
    "express": "^4.17.1"
  }
}

错误

Error R10 (Boot timeout) -> Web process failed to bind to $PORT within 60 seconds of launch


at=error code=H10 desc="App crashed" method=GET path="/" host=radiant-cliffs-96699.herokuapp.com request_id=ea43a5f3-75e7-4815-a059-a62d486c79f4 fwd="69.157.0.58" dyno= connect= service= status=503 bytes= protocol=https

Answer 1

const PORT = process.env.PORT || 5000;
app.listen(5000);

您没有在听变量PORT。您一直在听5000。绑定到PORT。