Error Messages?

[Kevin Mullin <mu...@us.ibm.com>]

I am using Tomcat, and just starting the server, I see these messages that 
look like error messages:

SEVERE: Servlet /ibi_html threw load() exception 
java.lang.NullPointerException 

and

SEVERE: StandardWrapper.Throwable 
java.lang.NullPointerException 

log4j:ERROR setFile(null,true) call failed.  
java.io.FileNotFoundException: 
/appls/WebFocusClient/ibi/WebFOCUS71/logs/wfibihtml.log (EDC5129I No such 
file or directory

and

SEVERE: StandardWrapper.Throwable
java.lang.NullPointerException 

and

log4j:ERROR setFile(null,true) call failed. 
java.io.FileNotFoundException: 
/appls/WebFocusClient/ibi/WebFOCUS71/logs/wfibihtml.log (EDC5129I No such 
file or directory.) 

(which sure looks like the previous one)

and

SEVERE: Servlet /approot threw load() exception
java.lang.NullPointerException 

and

SEVERE: StandardWrapper.Throwable 
java.lang.NullPointerException 

and

log4j:ERROR setFile(null,true) call failed. 
java.io.FileNotFoundException: 
/appls/WebFocusClient/ibi/WebFOCUS71/logs/wfapproot.log (EDC5129I No such 
file or directory.)

I say that these LOOK like errors, but the server does come up and nothing 
seems amiss.  Are these errors that need to be looked at?  The problems 
with 'No Such file or directory' are easy, and I can track those down, but 
the others?




Kevin Mullin
Sr. Analyst
IBM Corporation
(206) 345-7068
mullink@us.ibm.com

Re: Error Messages?

[Martin Gainty <mg...@hotmail.com>]

Kevin-

every Servlet has  an init(ServletCinfig) method
where you want to make sure you initialise all of the servlet variables 
Also perform quick sanity checks by initialising as well as printing the variable to make sure it is NOT null
and avoid NullPointerExceptions on load
e.g.
YourServlet extends javax.servlet.http.HttpServlet
{
string foo=null;
init(javax.servlet.ServletConfig config)
{
foo="foo";
out.println("foo variable = "+foo);
}

M-
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  ----- Original Message ----- 
  From: Kevin Mullin 
  To: users@tomcat.apache.org 
  Sent: Friday, November 03, 2006 2:39 PM
  Subject: Error Messages?



  I am using Tomcat, and just starting the server, I see these messages that look like error messages: 

  SEVERE: Servlet /ibi_html threw load() exception   
  java.lang.NullPointerException                     

  and 

  SEVERE: StandardWrapper.Throwable 
  java.lang.NullPointerException     

  log4j:ERROR setFile(null,true) call failed.                                     
  java.io.FileNotFoundException: /appls/WebFocusClient/ibi/WebFOCUS71/logs/wfibihtml.log (EDC5129I No such file or directory 

  and 

  SEVERE: StandardWrapper.Throwable 
  java.lang.NullPointerException   

  and 

  log4j:ERROR setFile(null,true) call failed.                               
  java.io.FileNotFoundException: /appls/WebFocusClient/ibi/WebFOCUS71/logs/wfibihtml.log (EDC5129I No such file or directory.)   

  (which sure looks like the previous one) 

  and 

  SEVERE: Servlet /approot threw load() exception 
  java.lang.NullPointerException                 

  and 

  SEVERE: StandardWrapper.Throwable 
  java.lang.NullPointerException     

  and 

  log4j:ERROR setFile(null,true) call failed.                             
  java.io.FileNotFoundException: /appls/WebFocusClient/ibi/WebFOCUS71/logs/wfapproot.log (EDC5129I No such file or directory.) 

  I say that these LOOK like errors, but the server does come up and nothing seems amiss.  Are these errors that need to be looked at?  The problems with 'No Such file or directory' are easy, and I can track those down, but the others?



        Kevin Mullin
        Sr. Analyst
        IBM Corporation
        (206) 345-7068
        mullink@us.ibm.com   

RE: Error Messages?

["Caldarale, Charles R" <Ch...@unisys.com>]

> From: Kevin Mullin [mailto:mullink@us.ibm.com] 
> Subject: Error Messages?
> 
> I say that these LOOK like errors, but the server does come 
> up and nothing seems amiss.

They are errors.  At least one of your webapps is not running properly.
Individual webapp failures do not normally affect the container, unless
the webapp starts consuming resources excessively.

> Are these errors that need to be looked at?

Certainly, if you want your apps to run properly.

 - Chuck


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