can you trouble shoot the null pointers.. i mean is pagecontext
initialized.. do a system.out.println on it
what the the exact lines of code the npe comes from.. are you using jikes to
compile jsp or default javac??
man my boss is gonna kill me 2..
-----Original Message-----
From: Naeem Malik [mailto:[EMAIL PROTECTED]]
Sent: Friday, 18 May 2001 5:34 PM
To: [EMAIL PROTECTED]
Subject: java.lang.NullPointerException....Helllloo PLZ HELP me
HI
i mailed again caz i need reply today, my Boss
getting angry.
Yesterday I was also mailed my problem but there was
persons who guide me but i need more
guidence to sort out that problem... so i m mailing
again.
I am webdevloper developing one website and using
tools JSP, Servlet,
and working on Jakarta-Tomcat version 3.1. I am the
old user of jakarta-tomcat,
so i know how to configure it properly. I m using
tomcat for my website but from
last 5 days, I am getting the problems what i
undersatnd it is related to the buffer
or context stuff but i m unbale to sort it out, so
there is full description of
my problem:
1>Some time it start working properly and then
suddenly start give following
Exception from Browser>
Error: 500
Location: /examples/jsp/New/dyeing.jsp
Internal Servlet Error:
java.lang.NullPointerException
at
jsp.New._0002fjsp_0002fNew_0002fdyeing_0002ejspdyeing_jsp_0._jspService(_000
2fjsp_0002fNew_0002fdyeing_0002ejspdyeing_jsp_0.java:123)
at
org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:126)
at
javax.servlet.http.HttpServlet.service(HttpServlet.java:588)
at
org.apache.jasper.runtime.JspServlet$JspServletWrapper.service(JspServlet.ja
va:174)
at
org.apache.jasper.runtime.JspServlet.serviceJspFile(JspServlet.java:261)
at
org.apache.jasper.runtime.JspServlet.service(JspServlet.java:369)
at
javax.servlet.http.HttpServlet.service(HttpServlet.java:588)
at
org.apache.tomcat.core.ServletWrapper.handleRequest(ServletWrapper.java:503)
at
org.apache.tomcat.core.ContextManager.service(ContextManager.java:559)
at
org.apache.tomcat.service.http.HttpConnectionHandler.processConnection(HttpC
onnectionHandler.java:160)
at
org.apache.tomcat.service.TcpConnectionThread.run(SimpleTcpEndpoint.java:338
)
at java.lang.Thread.run(Unknown Source)
then i Checked the 123 line of
_0002fjsp_0002fNew_0002fdyeing_0002ejspdyeing_jsp_0.java
there was the following code:
} catch (Exception ex) {
if (out.getBufferSize() != 0)
out.clearBuffer();
pageContext.handlePageException(ex);
} finally {
out.flush();
_jspxFactory.releasePageContext(pageContext);
}
OR
Error: 500
Location: /examples
Internal Servlet Error:
java.lang.NullPointerException
at
org.apache.tomcat.servlets.DefaultServlet.serveFile(DefaultServlet.java:301)
at
org.apache.tomcat.servlets.DefaultServlet.doGet(DefaultServlet.java:218)
at
javax.servlet.http.HttpServlet.service(HttpServlet.java:499)
at
javax.servlet.http.HttpServlet.service(HttpServlet.java:588)
at
org.apache.tomcat.core.ServletWrapper.handleRequest(ServletWrapper.java:503)
at
org.apache.tomcat.core.ContextManager.service(ContextManager.java:559)
at
org.apache.tomcat.service.http.HttpConnectionHandler.processConnection(HttpC
onnectionHandler.java:160)
at
org.apache.tomcat.service.TcpConnectionThread.run(SimpleTcpEndpoint.java:338
)
at java.lang.Thread.run(Unknown Source)
then i Checked the 301 line of DefaultServlet.java
there was the following code:
if(absPath.indexOf("..") != -1) {
// We have .. in the path...
response.sendError(response.SC_NOT_FOUND);
return;
}
2> or very rarely it gives the following message or
error>
Error: 404
Location: /
File Not Found
/
3> even it gives like most common message of Browser
by the giving the
URL> http://localhost:8080 on InternetExplorer and
then suddenly start working and
then again same message which is as follow>
The page cannot be found
bla bla bla
HTTP 404 - File not found
Internet Explorer
The following r the configurations of My system
I am using Compaq 800 MHZ of PIII, 20 GB Hard
Disk, 128 MB RAM.
Operating System WinNT 4 +Service Pack 5
Data Base Oracle 8
Tools JDK1.3.0_01, JSP1.1, Servlet,
Jakarta-ant, JavaScript,
HTML and etc
Autoexec.bat Path = set
PATH=%PATH%;c:\jdk13\bin;c:\java\jakarta-tomcat\bin
set JAVA_HOME=c:\jdk13
set
CLASSPATH=.;c:\jdk13\jre\lib\rt.jar;
c:\jdk13\lib\tools.jar;
c:\jdk13\lib\jsdk.jar;
c:\java\jakarta-tomcat\lib\servlet.jar
set ANT_HOME=c:\java\jakarta-ant
set Temp=C:\Temp
I will be very thanks full if you guide me that what's
going on, is there some thing wrong
with product or there is some problem in my
configuration.
Where as I using tomcat on port 8080 and I changed it
many times but nothing happen else dam
exceptions or messages.
I installed JDK1.3 & Tomcat 10 times in these 4 days
with different settings but I am still
not able to sort out the problem. So again I am very
hope full for positive response from
your side.
Thanks & Regard
Naeem Malik
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