好的，所以我遇到了一个我似乎无法弄清楚的间歇性异常，我似乎也无法始终如一地重现它以找出问题所在。我所拥有的只是一个异常和一个堆栈跟踪，也许你们可以帮助我。我可以告诉你，我在浏览我的 web 应用程序时遇到了这个问题，从一个页面到另一个页面并返回，等等第四个只是为了看到我所有的转发都正常工作并且我所有的 jstl 标签都可以正常加载正确的信息。堆栈跟踪是这样的：
java.lang.IllegalStateException: The resources may not be accessed if they are not currently started
at org.apache.catalina.webresources.StandardRoot.validate(StandardRoot.java:232)
at org.apache.catalina.webresources.StandardRoot.getResource(StandardRoot.java:199)
at org.apache.catalina.webresources.StandardRoot.getResource(StandardRoot.java:193)
at org.apache.catalina.mapper.Mapper.internalMapWrapper(Mapper.java:990)
at org.apache.catalina.mapper.Mapper.internalMap(Mapper.java:808)
at org.apache.catalina.mapper.Mapper.map(Mapper.java:667)
at org.apache.catalina.connector.CoyoteAdapter.postParseRequest(CoyoteAdapter.java:862)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:521)
at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1078)
at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:655)
at org.apache.coyote.http11.Http11NioProtocol$Http11ConnectionHandler.process(Http11NioProtocol.java:222)
at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1566)
at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.run(NioEndpoint.java:1523)
at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)
at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
at java.lang.Thread.run(Unknown Source)
有什么想法吗