我的JRUN4 怎么不能运行JSP文件呀？500 java.lang.NullPointerException

[hardways]

出现以下异常：
500

java.lang.NullPointerException
at jrun.servlet.JRunRequestDispatcher.invoke(JRunRequestDispatcher.java:258)
at jrun.servlet.ServletEngineService.dispatch(ServletEngineService.java:541)
at jrun.servlet.http.WebService.invokeRunnable(WebService.java:172)
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)

[fengfangfang]

添些log看看到哪里出错了

[hardways]

以下是LOG:
12/30 10:31:09 user JSPServlet: init

12/30 10:31:09 error Unexpected end of ZLIB input stream

[1]java.io.EOFException: Unexpected end of ZLIB input stream

at java.util.zip.InflaterInputStream.fill(InflaterInputStream.java:215)

at java.util.zip.InflaterInputStream.read(InflaterInputStream.java:134)

at java.util.zip.ZipInputStream.read(ZipInputStream.java:139)

at java.util.jar.JarInputStream.read(JarInputStream.java:159)

at java.util.zip.ZipInputStream.closeEntry(ZipInputStream.java:91)

at java.util.zip.ZipInputStream.getNextEntry(ZipInputStream.java:69)

at java.util.jar.JarInputStream.getNextEntry(JarInputStream.java:114)

at java.util.jar.JarInputStream.getNextJarEntry(JarInputStream.java:142)

at jrun.jsp.JSPEngine.checkResourceForTaglibs(JSPEngine.java:477)

at jrun.jsp.JSPEngine.findImplicitTaglibs(JSPEngine.java:451)

at jrun.jsp.JSPEngine.<init>(JSPEngine.java:141)

at jrun.jsp.JSPServlet.init(JSPServlet.java:62)

at jrun.servlet.WebApplicationService.loadServlet(WebApplicationService.java:1200)

at jrun.servlet.JRunRequestDispatcher.init(JRunRequestDispatcher.java:812)

at jrun.servlet.JRunRequestDispatcher.<init>(JRunRequestDispatcher.java:100)

at jrun.servlet.WebApplicationService.getDispatcher(WebApplicationService.java:867)

at jrun.servlet.ServletEngineService$1.fetch(ServletEngineService.java:511)

at jrunx.util.Cache.get(Cache.java:116)

at jrun.servlet.ServletEngineService.dispatch(ServletEngineService.java:537)

at jrun.servlet.http.WebService.invokeRunnable(WebService.java:172)

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)

[0]javax.servlet.ServletException: Unexpected end of ZLIB input stream

at jrun.jsp.JSPEngine.findImplicitTaglibs(JSPEngine.java:457)

at jrun.jsp.JSPEngine.<init>(JSPEngine.java:141)

at jrun.jsp.JSPServlet.init(JSPServlet.java:62)

at jrun.servlet.WebApplicationService.loadServlet(WebApplicationService.java:1200)

at jrun.servlet.JRunRequestDispatcher.init(JRunRequestDispatcher.java:812)

at jrun.servlet.JRunRequestDispatcher.<init>(JRunRequestDispatcher.java:100)

at jrun.servlet.WebApplicationService.getDispatcher(WebApplicationService.java:867)

at jrun.servlet.ServletEngineService$1.fetch(ServletEngineService.java:511)

at jrunx.util.Cache.get(Cache.java:116)

at jrun.servlet.ServletEngineService.dispatch(ServletEngineService.java:537)

at jrun.servlet.http.WebService.invokeRunnable(WebService.java:172)

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)

[hardways]

用TOMCAT没问题。