问题

我在Heroku上部署了我的Spring应用，但它每次都会崩溃。应用在本地主机上运行正常，并且在Heroku上似乎也能正常启动，但一分钟后就会崩溃。我甚至无法打开它，因为出现了超时错误。我附上了日志末尾的内容：

2020-04-09T15:29:42.942785+00:00 app[web.1]: 2020-04-09 15:29:42.942 INFO 4 --- [ main] o.s.b.w.embedded.tomcat.TomcatWebServer : Tomcat在端口8080（http）上启动，上下文路径为''。
2020-04-09T15:29:42.945506+00:00 app[web.1]: 2020-04-09 15:29:42.945 INFO 4 --- [ main] c.a.a.backend.BackendApplication : 在15.604秒内启动了BackendApplication（JVM已运行17.531秒）。
2020-04-09T15:30:53.816851+00:00 heroku[web.1]: 状态从启动中更改为已崩溃

日志中没有更多的信息。我应该检查什么？

<details>
<summary>英文:</summary>

i deployed my Spring app on Heroku but it crashes every time. Application works fine on localhost and also seems to correctly starting on Heroku but after one minute it crashes. I can&#39;t even open it because i&#39;ve got timeout. I attached end of the logs:

2020-04-09T15:29:42.942785+00:00 app[web.1]: 2020-04-09 15:29:42.942 INFO 4 --- [ main] o.s.b.w.embedded.tomcat.TomcatWebServer : Tomcat started on port(s): 8080 (http) with context path ''
2020-04-09T15:29:42.945506+00:00 app[web.1]: 2020-04-09 15:29:42.945 INFO 4 --- [ main] c.a.a.backend.BackendApplication : Started BackendApplication in 15.604 seconds (JVM running for 17.531)
2020-04-09T15:30:53.816851+00:00 heroku[web.1]: State changed from starting to crashed

There is nothing more in logs. What can i check?


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# 答案1
**得分**: 0

看起来你没有将你的Tomcat绑定到正确的端口。你需要绑定到Heroku提供的`$PORT`环境变量。Heroku有一篇关于这个的文章，也涵盖了Tomcat：https://devcenter.heroku.com/articles/setting-the-http-port-for-java-applications

<details>
<summary>英文:</summary>

It looks like you&#39;re not binding your tomcat to the correct port. You need to bind to the Heroku provided `$PORT` env variable. Heroku has an article about this, that also covers Tomcat: https://devcenter.heroku.com/articles/setting-the-http-port-for-java-applications

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