有没有人可以帮助Heroku的“入门java”指南： https://devcenter.heroku.com/articles/getting-started-with-java
它在scale = 1时工作正常 但是当我尝试扩大规模时失败了，例如：
heroku ps:scale web=2 --app myap
这会响应“内部服务器错误”并要求运行“heroku status”。 然而，“heroku status”只是说“此时不知道问题”。 并且“heroku：logs”没有提供太多信息，除了一些“413”错误：
2013-12-19T06:42:53+00:00 heroku[slug-compiler]: Slug compilation finished
2013-12-19T06:42:53.947859+00:00 heroku[web.1]: State changed from up to starting
2013-12-19T06:42:57.590970+00:00 heroku[web.1]: Stopping all processes with SIGTERM
2013-12-19T06:42:58.225911+00:00 heroku[web.1]: Starting process with command `java -cp target/classes:target/dependency/* HelloWorld`
2013-12-19T06:42:59.363034+00:00 app[web.1]: Picked up JAVA_TOOL_OPTIONS: -Djava.rmi.server.useCodebaseOnly=true -Djava.rmi.server.useCodebaseOnly=true
2013-12-19T06:42:59.677493+00:00 app[web.1]: 2013-12-19 06:42:59.675:INFO:oejs.Server:jetty-7.6.0.v20120127
2013-12-19T06:42:59.752285+00:00 app[web.1]: 2013-12-19 06:42:59.751:INFO:oejsh.
ContextHandler:started o.e.j.s.ServletContextHandler{/,null}
2013-12-19T06:42:59.795692+00:00 app[web.1]: 2013-12-19 06:42:59.787:INFO:oejs.A
bstractConnector:Started SelectChannelConnector@0.0.0.0:37683
2013-12-19T06:42:59.936719+00:00 heroku[web.1]: Process exited with status 143
2013-12-19T06:43:00.226719+00:00 heroku[web.1]: State changed from starting to u
帮助将不胜感激， 非常感谢