部署到Heroku时失败

Question

我试图将我的应用程序部署到Heroku。

构建成功，但存在应用程序错误。

这里是生成日志：

2017-08-19T10:52:32.433135+00:00 heroku[web.1]: State changed from crashed to 
starting 

2017-08-19T10:52:20.000000+00:00 app[api]: Build succeeded                

2017-08-19T10:52:34.561890+00:00 heroku[web.1]: Starting process with command 
`node app.js` 

2017-08-19T10:52:38.533264+00:00 app[web.1]: (node:4) DeprecationWarning: 
`open()` is deprecated in mongoose >= 4.11.0, use `openUri()` instead, or set 
the `useMongoClient` option if using `connect()` or `createConnection()`. See 
http://mongoosejs.com/docs/connections.html#use-mongo-client 

2017-08-19T10:52:38.577755+00:00 app[web.1]: Db.prototype.authenticate method 
will no longer be available in the next major release 3.x as MongoDB 3.6 will 
only allow auth against users in the admin db and will no longer allow 
multiple credentials on a socket. Please authenticate using 
MongoClient.connect with auth credentials. 

2017-08-19T10:52:38.879889+00:00 app[web.1]: the data has been seeded 

2017-08-19T10:53:38.120507+00:00 heroku[router]: at=error code=H10 desc="App 
crashed" method=GET path="/" host=murmuring-garden-83350.herokuapp.com 
request_id=dae4f901-83d5-442c-bca0-396508c8661e fwd="83.185.242.212" dyno= 
connect= service= status=503 bytes= protocol=https 

真的希望有人能指出我在正确的方向。谢谢。

Answer 1

找到我这里的解决方案：Heroku + node.js error (Web process failed to bind to $PORT within 60 seconds of launch)

在我的情况下我的应用程序崩溃，因为我很难设置端口，而不是使用Heroku的dinamicaly设置端口，可与process.env.PORT

访问

app.listen(process.env.PORT || 3000, function(){ 
console.log("Express server listening on port %d in %s mode", 
this.address().port, app.settings.env); 
});