Question

Can't find compiler errors in log

Asked by: knightEknight

I'm getting this response due to a compiler error in a JSP page:  javax.servlet.ServletException: JSPTranslator.CouldNotLoadClass

This is because even though the .java file is generated, the .class file is not because it won't compile.  But I can't find any detailed compiler error messages in any of the server logs or event logs.

I'm using JRun 4 update 7 with JDK 6_12 on Windows 2003.  Can anyone point me to where the detailed compiler messages are logged?

javax.servlet.ServletException: JSPTranslator.CouldNotLoadClass/myServlet.jsp
	at jrun.jsp.JSPEngine.loadServlet(JSPEngine.java:880)
	at jrun.jsp.JSPEngine.getServlet(JSPEngine.java:728)
	at jrun.jsp.JSPServlet.service(JSPServlet.java:115)
	at jrun.servlet.ServletInvoker.invoke(ServletInvoker.java:106)
	at jrun.servlet.JRunInvokerChain.invokeNext(JRunInvokerChain.java:42)
	at jrun.servlet.JRunRequestDispatcher.invoke(JRunRequestDispatcher.java:286)
	at jrun.servlet.ServletEngineService.dispatch(ServletEngineService.java:543)
	at jrun.servlet.jrpp.JRunProxyService.invokeRunnable(JRunProxyService.java:203)
	at jrunx.scheduler.ThreadPool$DownstreamMetrics.invokeRunnable(ThreadPool.java:320)
	at jrunx.scheduler.ThreadPool$ThreadThrottle.invokeRunnable(ThreadPool.java:428)
	at jrunx.scheduler.ThreadPool$UpstreamMetrics.invokeRunnable(ThreadPool.java:266)
	at jrunx.scheduler.WorkerThread.run(WorkerThread.java:66)

                                  
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Asked On
2009-07-31 at 06:50:48ID24616658
Tags

JSP compiler error log

Topic

Java Server Pages (JSP)

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Answers

 

by: MuraliKanthPosted on 2009-08-02 at 20:11:43ID: 25001693

using a good editor like eclipse should point out the compilation problems in your jsp. I dont think jsp compilation errors are logged anywhere as such. A shortcut would be open the .java file and try to place it in a editor GUI to get the compilation problems.

 

by: knightEknightPosted on 2009-08-03 at 06:34:06ID: 25004116

Thanks, I tried that before I posted the question, but I have since resolved the issue.

The problem was not in the changed .jsp page, but rather in an included one.  The included page had a variable called "enum", which compiled fine under java 1.4, but it a keyword in java 1.6.   When we upgraded to jdk 1.6 a few months ago, this page failed to recompile, but the previously generated .class file remained, and so the system continued working properly and passed all tests.  However, when I recently changed the including .jsp page, it could not recompile because of the problem in the included page.

It took me several hours of browsing the generated .java code line by line before I saw it.  I never did find any detailed compiler errors - that SUX about JSP.

20120131-EE-VQP-002

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