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From "alex" <zhang...@alegria.co.jp>
Subject debug in tomcat
Date Wed, 13 Dec 2000 08:17:11 GMT
hi all!!
i got a problem with my code.
and the most of all.
i cannot find where i made mistake.
i was stuck for several days.
who can help me?

Location: /usertable/userlist.jsp
Internal Servlet Error:

org.apache.jasper.JasperException: Unable to compile class for JSP
	at org.apache.jasper.servlet.JspServlet.doLoadJSP(JspServlet.java:476)
	at
org.apache.jasper.servlet.JasperLoader12.loadJSP(JasperLoader12.java:146)
	at org.apache.jasper.servlet.JspServlet.loadJSP(JspServlet.java:433)
	at
org.apache.jasper.servlet.JspServlet$JspServletWrapper.loadIfNecessary(JspSe
rvlet.java:152)
	at
org.apache.jasper.servlet.JspServlet$JspServletWrapper.service(JspServlet.ja
va:164)
	at
org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:318)
	at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:391)
	at javax.servlet.http.HttpServlet.service(HttpServlet.java:853)
	at
org.apache.tomcat.core.ServletWrapper.doService(ServletWrapper.java:404)
	at org.apache.tomcat.core.Handler.service(Handler.java:286)
	at org.apache.tomcat.core.ServletWrapper.service(ServletWrapper.java:372)
	at
org.apache.tomcat.core.ContextManager.internalService(ContextManager.java:79
7)
	at org.apache.tomcat.core.ContextManager.service(ContextManager.java:743)
	at
org.apache.tomcat.service.http.HttpConnectionHandler.processConnection(HttpC
onnectionHandler.java:210)
	at
org.apache.tomcat.service.TcpWorkerThread.runIt(PoolTcpEndpoint.java:416)
	at
org.apache.tomcat.util.ThreadPool$ControlRunnable.run(ThreadPool.java:498)
	at java.lang.Thread.run(Thread.java:484)

Root cause:
java.lang.NullPointerException
	at
org.apache.jasper.compiler.TagBeginGenerator.generateSetters(TagBeginGenerat
or.java:196)
	at
org.apache.jasper.compiler.TagBeginGenerator.generateServiceMethodStatements
(TagBeginGenerator.java:291)
	at
org.apache.jasper.compiler.TagBeginGenerator.generate(TagBeginGenerator.java
:360)
	at
org.apache.jasper.compiler.JspParseEventListener$GeneratorWrapper.generate(J
spParseEventListener.java:773)
	at
org.apache.jasper.compiler.JspParseEventListener.generateAll(JspParseEventLi
stener.java:220)
	at
org.apache.jasper.compiler.JspParseEventListener.endPageProcessing(JspParseE
ventListener.java:175)
	at org.apache.jasper.compiler.Compiler.compile(Compiler.java:183)
	at org.apache.jasper.servlet.JspServlet.doLoadJSP(JspServlet.java:462)
	at
org.apache.jasper.servlet.JasperLoader12.loadJSP(JasperLoader12.java:146)
	at org.apache.jasper.servlet.JspServlet.loadJSP(JspServlet.java:433)
	at
org.apache.jasper.servlet.JspServlet$JspServletWrapper.loadIfNecessary(JspSe
rvlet.java:152)
	at
org.apache.jasper.servlet.JspServlet$JspServletWrapper.service(JspServlet.ja
va:164)
	at
org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:318)
	at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:391)
	at javax.servlet.http.HttpServlet.service(HttpServlet.java:853)
	at
org.apache.tomcat.core.ServletWrapper.doService(ServletWrapper.java:404)
	at org.apache.tomcat.core.Handler.service(Handler.java:286)
	at org.apache.tomcat.core.ServletWrapper.service(ServletWrapper.java:372)
	at
org.apache.tomcat.core.ContextManager.internalService(ContextManager.java:79
7)
	at org.apache.tomcat.core.ContextManager.service(ContextManager.java:743)
	at
org.apache.tomcat.service.http.HttpConnectionHandler.processConnection(HttpC
onnectionHandler.java:210)
	at
org.apache.tomcat.service.TcpWorkerThread.runIt(PoolTcpEndpoint.java:416)
	at
org.apache.tomcat.util.ThreadPool$ControlRunnable.run(ThreadPool.java:498)
	at java.lang.Thread.run(Thread.java



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