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我在本地開發機器上運行Tomcat 7，並且我的web應用程序運行良好，將它移動到服務器（也運行Tomcat 7），我開始收到Error 500，抱怨無法編譯一些JSP。我已經重新啓動了服務器，但仍然沒有修復它。這是我最近的日誌。可能是什麼問題呢？Tomcat - 無法編譯JSP的類
下面是我在嘗試訪問上下文根目錄下的index.jsp時獲得的屏幕截圖（所有其他頁面也都這樣做）https://docs.google.com/open?id=0B62YJhbvaJNkN3hjTUpEMVp1eUk 大約4次刷新後可能會加載的東西。我也看到了一些permGen的東西。請我需要幫助。謝謝！
Aug 25, 2012 5:05:29 AM org.apache.catalina.core.StandardWrapperValve invoke
SEVERE: Servlet.service() for servlet [LoginChurch] in context with path [/ReligionApp] threw exception [Servlet execution threw an exception] with root cause
java.lang.OutOfMemoryError: PermGen space
at java.lang.ClassLoader.defineClass1(Native Method)
at java.lang.ClassLoader.defineClass(ClassLoader.java:634)
at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:142)
at org.apache.catalina.loader.WebappClassLoader.findClassInternal(WebappClassLoader.java:2818)
at org.apache.catalina.loader.WebappClassLoader.findClass(WebappClassLoader.java:1148)
at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1643)
at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1521)
at java.lang.ClassLoader.loadClassInternal(ClassLoader.java:334)
at com.mchange.v2.c3p0.C3P0Registry.reregister(C3P0Registry.java:239)
at com.mchange.v2.c3p0.impl.DriverManagerDataSourceBase.<init>(DriverManagerDataSourceBase.java:212)
at com.mchange.v2.c3p0.DriverManagerDataSource.<init>(DriverManagerDataSource.java:60)
at com.mchange.v2.c3p0.DriverManagerDataSource.<init>(DriverManagerDataSource.java:56)
at com.mchange.v2.c3p0.DataSources.unpooledDataSource(DataSources.java:152)
at org.hibernate.connection.C3P0ConnectionProvider.configure(C3P0ConnectionProvider.java:154)
at org.hibernate.connection.ConnectionProviderFactory.newConnectionProvider(ConnectionProviderFactory.java:124)
at org.hibernate.connection.ConnectionProviderFactory.newConnectionProvider(ConnectionProviderFactory.java:56)
at org.hibernate.cfg.SettingsFactory.createConnectionProvider(SettingsFactory.java:414)
at org.hibernate.cfg.SettingsFactory.buildSettings(SettingsFactory.java:62)
at org.hibernate.cfg.Configuration.buildSettings(Configuration.java:2009)
at org.hibernate.cfg.Configuration.buildSessionFactory(Configuration.java:1292)
at org.hibernate.cfg.AnnotationConfiguration.buildSessionFactory(AnnotationConfiguration.java:859)
at com.pacesolutions.religionapp.HibernateUtil.<clinit>(HibernateUtil.java:24)
at com.pacesolutions.religionapp.services.LoginChurch.processRequest(LoginChurch.java:68)
at com.pacesolutions.religionapp.services.LoginChurch.doPost(LoginChurch.java:140)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:641)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:722)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:306)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:240)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:161)
at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:496)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:164)
Aug 25, 2012 5:06:04 AM org.apache.catalina.core.StandardWrapperValve invoke
SEVERE: Servlet.service() for servlet [LoginChurch] in context with path [/ReligionApp] threw exception [Servlet execution threw an exception] with root cause
java.lang.NoClassDefFoundError: Could not initialize class com.pacesolutions.religionapp.HibernateUtil
at com.pacesolutions.religionapp.services.LoginChurch.processRequest(LoginChurch.java:68)
at com.pacesolutions.religionapp.services.LoginChurch.doGet(LoginChurch.java:127)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:621)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:722)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:306)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:240)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:161)
at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:496)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:164)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:100)
at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:541)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:118)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:383)
at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:243)
at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:188)
at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:166)
at org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:288)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1110)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:603)
at java.lang.Thread.run(Thread.java:636)
Aug 25, 2012 5:11:50 AM org.apache.catalina.core.StandardWrapperValve invoke
SEVERE: Servlet.service() for servlet [LoginChurch] in context with path [/ReligionApp] threw exception [Servlet execution threw an exception] with root cause
java.lang.NoClassDefFoundError: Could not initialize class com.pacesolutions.religionapp.HibernateUtil
at com.pacesolutions.religionapp.services.LoginChurch.processRequest(LoginChurch.java:68)
at com.pacesolutions.religionapp.services.LoginChurch.doPost(LoginChurch.java:140)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:641)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:722)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:306)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:240)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:161)
at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:496)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:164)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:100)
at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:541)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:118)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:383)
at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:243)
at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:188)
at org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:288)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1110)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:603)
at java.lang.Thread.run(Thread.java:636)
Aug 25, 2012 7:18:05 AM org.apache.catalina.core.ApplicationContext log
INFO: ContextListener: contextInitialized()
Aug 25, 2012 7:18:05 AM org.apache.catalina.core.ApplicationContext log
INFO: SessionListener: contextInitialized()
Aug 25, 2012 7:18:05 AM org.apache.catalina.core.ApplicationContext log
INFO: SessionListener: contextDestroyed()
Aug 25, 2012 7:18:05 AM org.apache.catalina.core.ApplicationContext log
INFO: ContextListener: contextDestroyed()
好的，謝謝，還有其他什麼問題？請注意，我重新啓動了Tomcat，問題仍然存在。也請看看我發佈的截圖的鏈接。謝謝。 –
另一個問題是找不到類。看起來你缺少類路徑中的某些東西 - 例如WEB-INF /庫。 – Dan
它在我的本地開發Tomcat上正常工作。同時，作爲一個快速解決方案，我已將該Tomcat（在服務器計算機上）交換到另一個端口，然後在端口8080上安裝新的Tomcat並重新部署。但我想知道如何解決這個問題，以防將來遇到它（我認爲很可能我會在職業生涯中再次遇到它）。 –