在尝试在heroku中部署节点应用程序时，请继续收到应用程序错误

我在使用heroku时遇到了困难。 跟着部署一个节点js应用程序在heroku指南，但仍然不断得到一个应用程序错误。 任何想法为什么请？ 这里是我的英雄日志

heroku logs 2015-10-27T19:48:35.704758+00:00 heroku[api]: Enable Logplex by [e-mail] 2015-10-27T19:48:35.704758+00:00 heroku[api]: Release v2 created by [e-mail] 2015-10-27T19:57:58.536860+00:00 heroku[slug-compiler]: Slug compilation started 2015-10-27T19:57:58.536871+00:00 heroku[slug-compiler]: Slug compilation finished 2015-10-27T19:57:58.397214+00:00 heroku[api]: Scale to web=1 by [e-mail] 2015-10-27T19:57:58.466140+00:00 heroku[api]: Deploy 51bdb1d by [e-mail] 2015-10-27T19:57:58.466140+00:00 heroku[api]: Release v3 created by [e-mail] 2015-10-27T19:58:00.692453+00:00 heroku[web.1]: Starting process with command `npm start` 2015-10-27T19:58:03.827532+00:00 app[web.1]: 2015-10-27T19:58:03.827554+00:00 app[web.1]: > node app.js 2015-10-27T19:58:03.827552+00:00 app[web.1]: > gf17@0.0.1 start /app 2015-10-27T19:58:03.827555+00:00 app[web.1]: 2015-10-27T19:58:04.616168+00:00 app[web.1]: Express server listening on port 3000 2015-10-27T19:59:00.972722+00:00 heroku[web.1]: Error R10 (Boot timeout) -> Web process failed to bind to $PORT within 60 seconds of launch 2015-10-27T19:59:00.972722+00:00 heroku[web.1]: Stopping process with SIGKILL 2015-10-27T19:59:01.940288+00:00 heroku[web.1]: State changed from starting to crashed 2015-10-27T19:59:01.941567+00:00 heroku[web.1]: State changed from crashed to starting 2015-10-27T19:59:01.932037+00:00 heroku[web.1]: Process exited with status 137 2015-10-27T19:59:04.247002+00:00 heroku[web.1]: Starting process with command `npm start` 2015-10-27T19:59:07.923766+00:00 app[web.1]: 2015-10-27T19:59:07.923776+00:00 app[web.1]: > gf17@0.0.1 start /app 2015-10-27T19:59:07.923778+00:00 app[web.1]: > node app.js 2015-10-27T19:59:07.923779+00:00 app[web.1]: 2015-10-27T19:59:09.513389+00:00 app[web.1]: Express server listening on port 3000 2015-10-27T20:00:04.705994+00:00 heroku[web.1]: Error R10 (Boot timeout) -> Web process failed to bind to $PORT within 60 seconds of launch 2015-10-27T20:00:04.705994+00:00 heroku[web.1]: Stopping process with SIGKILL 2015-10-27T20:00:05.657468+00:00 heroku[web.1]: State changed from starting to crashed 2015-10-27T20:00:05.644215+00:00 heroku[web.1]: Process exited with status 137 2015-10-27T20:17:45.559370+00:00 heroku[router]: at=error code=H10 desc="App crashed" method=GET path="/" host=evening-fjord-8286.herokuapp.com request_id=ce9f7865-5431-4514-83e3-9228df351291 fwd="154.118.30.203" dyno= connect= service= status=503 bytes= 2015-10-27T20:17:46.110795+00:00 heroku[router]: at=error code=H10 desc="App crashed" method=GET path="/favicon.ico" host=evening-fjord-8286.herokuapp.com request_id=e7b1f9b7-4600-4ce7-b90c-3239a82abcb9 fwd="154.118.30.203" dyno= connect= service= status=503 bytes= 2015-10-27T20:17:48.086903+00:00 heroku[router]: at=error code=H10 desc="App crashed" method=GET path="/favicon.ico" host=evening-fjord-8286.herokuapp.com request_id=8a41518c-cfd8-4dac-8622-1f94de9346b3 fwd="198.15.118.148" dyno= connect= service= status=503 bytes= 2015-10-27T20:17:48.543167+00:00 heroku[router]: at=error code=H10 desc="App crashed" method=GET path="/favicon.ico" host=evening-fjord-8286.herokuapp.com request_id=e1ce271b-7a76-43c1-931e-0ac9a375cfb7 fwd="154.118.30.203" dyno= connect= service= status=503 bytes= 2015-10-27T20:19:48.784831+00:00 heroku[router]: at=error code=H10 desc="App crashed" method=GET path="/" host=evening-fjord-8286.herokuapp.com request_id=9229308a-6604-4426-8ba6-4cabb8b94de9 fwd="154.118.30.203" dyno= connect= service= status=503 bytes= 2015-10-27T20:19:49.552910+00:00 heroku[router]: at=error code=H10 desc="App crashed" method=GET path="/favicon.ico" host=evening-fjord-8286.herokuapp.com request_id=e542cc92-ca00-4044-8c23-76642887ef35 fwd="154.118.30.203" dyno= connect= service= status=503 bytes= 2015-10-27T20:22:17.304691+00:00 heroku[web.1]: State changed from crashed to starting 2015-10-27T20:22:19.261727+00:00 heroku[web.1]: Starting process with command `npm start` 2015-10-27T20:22:21.447920+00:00 app[web.1]: 2015-10-27T20:22:21.447934+00:00 app[web.1]: > gf17@0.0.1 start /app 2015-10-27T20:22:21.447935+00:00 app[web.1]: > node app.js 2015-10-27T20:22:21.447936+00:00 app[web.1]: 2015-10-27T20:22:22.123539+00:00 app[web.1]: Express server listening on port 3000 2015-10-27T20:23:19.916089+00:00 heroku[web.1]: Stopping process with SIGKILL 2015-10-27T20:23:19.916089+00:00 heroku[web.1]: Error R10 (Boot timeout) -> Web process failed to bind to $PORT within 60 seconds of launch 2015-10-27T20:23:20.780482+00:00 heroku[web.1]: Process exited with status 137 2015-10-27T20:23:20.792567+00:00 heroku[web.1]: State changed from starting to crashed 2015-10-27T20:25:54.984210+00:00 heroku[router]: at=error code=H10 desc="App crashed" method=GET path="/" host=evening-fjord-8286.herokuapp.com request_id=83eec29d-598c-44d1-b6bc-55933e60013f fwd="154.118.30.203" dyno= connect= service= status=503 bytes= 2015-10-27T20:25:56.659875+00:00 heroku[router]: at=error code=H10 desc="App crashed" method=GET path="/favicon.ico" host=evening-fjord-8286.herokuapp.com request_id=c384f7e6-e6e9-4088-bdf1-b7370b572b68 fwd="154.118.30.203" dyno= connect= service= status=503 bytes= 

Answer 1

从你的日志，看起来你没有绑定到正确的端口。

我将假设您的Express.js应用程序如下所示：

 app.listen(3000); 

这行代码告诉Express.js开始在端口3000上运行一个web服务器。当你在你的笔记本电脑上编写代码时，这很好，但是当你将代码部署到Heroku时，Heroku会为你指定一个RANDOM端口号，你必须绑定到。

所以，要解决您的问题，您应该重写上面的代码行如下所示：

 app.listen(process.env.PORT || 3000); 

这将告诉你的应用程序在正确的Heroku端口上运行，但在本地笔记本电脑上进行开发时可以回到3000端口=）这是两全其美的。

希望这可以帮助！