小编Mac*_*tow的帖子

我开发了一个小的Heroku + Grails + Postreg应用程序.部署后20分钟它会工作正常,之后我总是得到:

 This connection has been closed.. Stacktrace follows: Heroku/myapp
- org.postgresql.util.PSQLException: This connection has been closed. Heroku/myapp
- at org.postgresql.jdbc2.AbstractJdbc2Connection.checkClosed(AbstractJdbc2Connection.java:837) Heroku/myapp
- at org.postgresql.jdbc2.AbstractJdbc2Connection.getAutoCommit(AbstractJdbc2Connection.java:798) Heroku/myapp
- at org.grails.datastore.gorm.GormStaticApi$_methodMissing_closure2.doCall(GormStaticApi.groovy:102) Heroku/myapp
- at com.myapp.WorkspaceController.list(WorkspaceController.groovy:18) Heroku/myapp
- at grails.plugin.cache.web.filter.PageFragmentCachingFilter.doFilter(PageFragmentCachingFilter.java:198) Heroku/myapp
- at grails.plugin.cache.web.filter.AbstractFilter.doFilter(AbstractFilter.java:63) Heroku/myapp
- at grails.plugin.springsecurity.web.filter.GrailsAnonymousAuthenticationFilter.doFilter(GrailsAnonymousAuthenticationFilter.java:53) Heroku/myapp
- at grails.plugin.springsecurity.web.authentication.RequestHolderAuthenticationFilter.doFilter(RequestHolderAuthenticationFilter.java:53) Heroku/myapp
- at grails.plugin.springsecurity.web.authentication.logout.MutableLogoutFilter.doFilter(MutableLogoutFilter.java:62) Heroku/myapp
- at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145) Heroku/myapp
- at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615) Heroku/myapp
- at java.lang.Thread.run(Thread.java:745) Heroku/myapp
- 2015-08-07 15:11:10,685 [http-nio-20850-exec-5] ERROR spi.SqlExceptionHelper - This connection has been …

我已将 svn 存储库迁移到本地 git。由于某种原因，所有作者看起来都是这样的：

userid <userid@localhost> 

有没有办法将所有作者重写“localhost”更改为“myorg.org”

userid <userid@myorg.org> 

更新

userid 不固定。

我有一个嵌套的地图 Map<String, Map<String, Map<String, ...>

我如何使用Java 8 lambdas在地图上导航.这里可能的必要解决方案:

Object getObjectWithKey(String key) { // key = "parent.parent1.parent1.1"
    Map head = mainMap;

    for (String k in key.split(".")){
      head = head.get(k);
    }

    return (Object) head;
}