Tomcat Servlet: System.out.println in servlet not printing to catalina.out

Hello friends ,
When i m using System.out.println() in servlet its o/p should come in catalina.out but its not coming plz help me....one thing more can we replace exixting catalina.out file with new one...
please Help me soon.
Thanks

go to[u] TOMCAT_DIR/config/server.xml.
Open this xml file and find something like <Logger className="org.apache.catalina.logger.FileLogger"
              prefix="catalina_log." suffix=".txt"
              timestamp="true"/>and
<Logger className="org.apache.catalina.logger.FileLogger"
                 directory="logs" prefix="localhost_log." suffix=".txt"
            timestamp="true"/>You can change the log file name to another one.
It's much better to use a logger tool like log4j (http://logging.apache.org/log4j/docs/download.html) then using a System.out.println()...
hope that helps

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Hi...
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hi
iam using xml parser to display document it displaying on window it should dislpay on emulater screen
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Tomcat Java Servlets, how to log System.out.println() messages

I have recently installed a new (x86) Mac OS Xserve, and am porting some Java application Servlets from an existing older Mac OSX server. All the servlets were working (I am connecting via port 9006). I have carefully used the old JDK 1.4 compiler, edited my server.xml (for port 9006) and web.xml files, etc. The Tomcat example servlets work fine, and all my (other) servlets work fine, with one exception, where I get the typically vague "java.io.IOException: Server returned HTTP response code: 500" message.
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System.out.println in Servlets/JSPs

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Goes to standard out, not a file. So if you're running the embedded server you will see it in your Embedded Server Console window. However, you should never be using system.out.println in a servlet/jsp. Instead use commons logging or log4j to get log messages.

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How can I see whatever I print through System.out.println in my servlets when I use iplanet 4.1

how can I see whatever I print through System.out.println in my servlets when I use iplanet 4.1

Hi Nitin,
Look out the below link, Hope this helps you.
http://knowledgebase.iplanet.com/ikb/kb/articles/4235.html
http://knowledgebase.iplanet.com/ikb/kb/articles/4790.html
http://knowledgebase.iplanet.com/ikb/kb/articles/4699.html
Regards,
Dakshin.
Developer Technical Support
Sun Microsystems
http://www.sun.com/developers/support.

Tomcat 4.0.1 on Linux, system.out.prinln() not working

I recently installed Tomcat 4.0.1 on RH Linux 7.2 and I am trying to develop some servlet- and JSP-based applications. I've set up everything according to the instructions, however, I'm finding that when I put a system.out.println(somestring) statement in my servlet and I have a console window open, nothing is printed out on the command line.
In the past when I was using Tomcat 3.1 that was not a problem.
Thanks,
Ethan

err. did you check "catalina.out" in the logs
directory ?
rahulOK, I just did, and there's the output from my print statements. I didn't know that's where standard output goes. Thanks for the information.
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System.out.println does not print out anything

I'm wonder why the dos mode does not print out the System.out.println.
My code has:
import java.io.*;
import javax.servlet.*;
import javax.servlet.http.*;
public class test extends HttpServlet {
   public void doGet(HttpServletRequest request,
   HttpServletResponse response) throws IOException,
   ServletException {
      System.out.println("Hello");
The compilation is ok... but it does not display anything... how come?

"System.out.print()" prints to the log file of the tomcat server. in order to print on the screen use JspWriter.
import java.io.*;
import javax.servlet.*;
import javax.servlet.http.*;
public class test extends HttpServlet {
public void doGet(HttpServletRequest request,
HttpServletResponse response) throws IOException,
ServletException {
response.setContentType("text/html");
PrintWriter out = response.getWriter();
out.println("Hello");
//System.out.println("Hello");
Hope this helps!

System.out.println not showing up in the console

Hi,
I've some System.out.println statements in a static block in a Stateless
Session Bean. I could not see these outputs in the Weblogic console. I'm
using Weblogic 5.1 Any one faced this problem before? any help is
appreciated.
Thanks & Regards,
Nithi.

Take a look in the weblogic log files they might be redirecting std out.
"Ryan LeCompte" <[email protected]> wrote:
>
Hello Nithi,
I'm all out of ideas, unfortunately! However, check out the following
links for
some possible insight into the problem:
http://groups.google.com/groups?q=System.out.println+5.1+WebLogic&start=60&hl=en&lr=&ie=UTF-8&oe=UTF-8&selm=3d3df18e%40newsgroups.bea.com&rnum=69
http://groups.google.com/groups?q=System.out.println+5.1+WebLogic&start=70&hl=en&lr=&ie=UTF-8&oe=UTF-8&selm=3977417b%40newsgroups.bea.com&rnum=71
http://groups.google.com/groups?q=System.out.println+5.1+WebLogic&start=200&hl=en&lr=&ie=UTF-8&oe=UTF-8&selm=3bc20346%241%40newsgroups.bea.com&rnum=209
Best regards,
Ryan LeCompte
[email protected]
http://www.louisiana.edu/~rml7669
"Nithi Rajan" <[email protected]> wrote:
Hi Ryan,
Thanks for your reply and sorry for the long silence. I was on vocation.
Thre problem still remains.I'm very sure that the EJB
is deployed by WebLogic as I'm able to call some methods.
and I'm also calling EJB methods from Servlet. But my
System.out.println statments work fine in the Servlet and
not inside EJB (or anyother classes used by EJB).
Any one has faced similar problems? BTW am using WebLogic 5.1
Thanks in advance,
Regards,
Nithi.
"Ryan LeCompte" <[email protected]> wrote in message
news:[email protected]...
Hello Nithi,
I find it strange that your System.out.println statements are beingexecuted from
within your servlets, but not in your stateless session bean. Are
you
positive
that your EJB is being located and deployed by WebLogic? The statementsin
your
static { } block should be executed as soon as the WebLogic class
loader
finds
the class and loads it into the JVM. I would suggest examining theconsole
and
try to determine if your EJB is in fact being deployed. Are you invokingmethods
on the EJB inside of your servlets? Are you using any logging frameworkfrom within
the EJBs which would redirect output to a file?
Best regards,
Ryan LeCompte
[email protected]
http://www.louisiana.edu/~rml7669
"Nithi Rajan" <[email protected]> wrote:
Hi Ryan,
Thanks for your reply. The setting in the weblogic.properties is
as
follows.
weblogic.system.enableConsole=true
So, that tells me that I should see all the System.out.printlns right?
(Pleasecorrect me if I'm wrong). I can see all the System.out.println
from
my
servletand not from the Session Bean (even if the System.out.println
is
outside
static block).
Please let me know your thoughts.
Thanks & Regards,
Nithi.
"Ryan LeCompte" <[email protected]> wrote in message
news:[email protected]...
Hello Nithi,
Are you sure that you don't have WebLogic configured to redirect
all
messages
to a file instead of the console? Are you able to see yourSystem.out.println
statements when placed within other methods of your stateless sessionbean? Please
be a bit more specific.
Thank you,
Ryan LeCompte
[email protected]
http://www.louisiana.edu/~rml7669
"Nithi Rajan" <[email protected]> wrote:
Hi,
I've some System.out.println statements in a static block in a
Stateless
Session Bean. I could not see these outputs in the Weblogic console.
I'm
using Weblogic 5.1 Any one faced this problem before? any helpis
appreciated.
Thanks & Regards,
Nithi.

Help: What can make "System.out.println" not displaying anything?

Hello,
We have Portal 10g.
I have noticed a pb on the interpretation of existing JSP pages.
I simplified the code... and I noticed that even this command doesn't work :
<%
System.out.println("Hello World");
%>
Any idea ?
Is there any security ? permission I should get ?
JSP works fine on our old 8i environment ...
Thanks in advance for your help.
Olivier

Olivier,
between 8i and 10g are aeons of time (for computer technology). As far as I recall, in 8i came with a Apache and JServ module. This supported Servlets and JSP through a special Oracle implementation. After that OC4J as a J2EE container for EJBs and Servlets/JSPs was introduced.
Using JSPs with the database installation only is not advised anymore. You can use OC4J for that. But be aware that will require some changes in the configuration and deployment of JSPs.
HTH,
--olaf

Compiled Tomcat Servlet Example & got JAR, not WAR?

Is there a basic reference on how to create a simple servlet with NetBeans 4.1 and deploy it to Tomcat?
When I created the project I chose Samples->Web->Tomcat Servlet Example, and yet it does not create a WAR file on compilation.
And of course once I'm past that I have to figure out how to edit the XML file, I gather.
I need a reference that will hold me by the hand and walk me through it once to kick start me.
After that I think I can make it without having to ask such newbie questions.

Hi,
not sure to what extent you are clear in build.xml file (done thru ant).
what i can tell you is, ant creates any archive file (be it .jar, .war, .ear) with the tasks named "jar" (<jar jarfile="yourfilename.jar"..>), "war" and "ear". But both war and ear are the extensions of the jar only.
You can achieve creation of any archive file with the jar task itself.
you need to take care of the following...
(1) you can /should edit the extension of the files at every stage.. first .jar and then .war and then .ear (if necessary) => basic flow
(2) at every step, you have to have a file inclusion inside the corresponding archive file..
say for example, for a .jar file you should include all the compiled .class files, and ejb-jar.xml (incase you use ejbs) and other built-in jar files....
In case of .war files (web archive) you should include the web.xml file, any static files (html, jsp etc), any tld files - it goes with your application's nature and requirement.....
fyi, i m including a sample build.xml file which i use for a webapplication, so it deals with war...
<?xml version="1.0" encoding="UTF-8"?>
<project name="ServletsReqDispFwd" default="deploy">
     <property name="top" value="."/>
     <property name="webinf" value="${top}/WEB-INF"/>
     <property name="lib" value="${webinf}/lib"></property>
     <property name="classes" value="WEB-INF/classes"/>
     <property name="jboss.dir" value="D:\jboss-3.2.2RC3\server\default\deploy"></property>
     <property name="tomcat.dir" value="D:\jakarta-tomcat-4.1.27\webapps"></property>
     <property name="warfile" value="ServletsReqDispFwd.war"></property>
     <property name="src" value="${top}/src"/>
     <property name="web.xml" value="WEB-INF/web.xml"/>
     <target name="package">
          <javac srcdir="${src}" destdir="${classes}"
                 listfiles="true" debug="true" verbose="true"
                      classpath="${lib}/*.jar"/>
          <war warfile="${warfile}" webxml="${web.xml}">
               <webinf dir="${top}">
                    <include name="**/*web*.xml"/>
                    <include name="**/*application*.xml"/>
                    <exclude name="src/**/*.xml"/>
               </webinf>
               <lib dir="${lib}">
                    <include name="*.jar"/>
               </lib>
               <fileset dir="." includes="**/*.html"/>
               <classes dir="${classes}" includes="**/*.class"></classes>
          </war>
     </target>
     <target name="deploy" depends="clean,package">
          <copy file="${warfile}" todir="${tomcat.dir}" overwrite="true"></copy>
     </target>
     <target name="clean">
          <delete dir="${classes}">
               <filename name="*.class"/>
          </delete>
          <delete>
               <fileset dir="${top}" includes="${warfile}"/>
          </delete>
          <delete>
               <fileset dir="${tomcat.dir}" includes="${warfile}"/>
          </delete>
     </target>
</project>hope this contribues to a certain extent to help you edit the buildfile (xml file as you go) to meet your requirement.....

32-bit JDK 7 System.out.println not working in IDE

Hi folks,
I have a 64-bit Windows 7 OS.
Due to 3rd party library/jar dependencies, i had to install the 32-bit Java JDK 1.7 and Eclipse IDE.
I also installed NetBeans.
So i have a 64-bit OS and am running 32-bit Java JDK/JRE & IDEs.
The problem I am having is that my program's System.out.println("...") statements are not outputting strings to either IDE debug console.
Executing the compiled program from a command line/prompt produces the expected string output.
The basic "Hello, World" program is enough to cause this behaviour to start occurring.
I have not manually / intentionally changed any IDE-specific Debug Console or Windows environment settings.
One caveat: This same environment has worked successfully in the past ?! Yes, this is one of those "..it worked last week & yesterday and today it isn't and i swear i didn't do anything..." issue.
Thoughts ?

Thanks for the reply.
The 64-bit versions of Java & Eclipse were installed first.
When i discovered I had to use the 32-bit versions, i un-installed the 64-bit ones & installed the 32-bits.
Even after that initial un-install 64-bit/install 32-bit process, it was working.
I have also been installing the Windows 7 64-bit OS updates when i am informed of them.
I'm not sure if any of these would affect how the Eclipse / NetBeans IDEs behave.
Behaviour has been inconsistent.
Initially it was always working.
But over the past several days, it has been working less and less.
I don't have any large data structures.
This isn't a large complicated program, couple hundred lines, so i highly doubt that i'm doing anything to the resources, but something has changed.
The main project I am working on takes command line parameters, does some initial processing, produces output using System.out.printlns [SOP] then depending on the parameters, branches into 2 different processing paths, let's call them A & B. Each of these processing paths also use SOPs. When i run the program in the IDE going thru path A, sometimes the initial SOP statements will work and the SOP statements specific to path A will also work. If i immediately change the parameters to go thru path B & re-run it, not even the initial SOP statements before the branching decision work.
I've tried doing System.flush()s too - no affect.
I haven't tried the re-direction option to a file option you mentioned yet.
It always works from a command prompt - that is telling me that the Java SOPs are working properly, correct ?
Inside an Eclipse or NetBeans IDE, SOP output to the debug console is inconsistent.
Running from a command prompt, the SOPs always work.
It'd help to know if this an IDE issue, a Java issue, a Windows 7 issue so i can narrow down where to try and correct the situation.
I have a Windows XP VM set up, i'll try running the program there and see if there's a difference.
Thanks for your reply.

CiscoWorks Tomcat Servlet Engine service does not start

Hello!
CiscoWorks Tomcat Servlet Engine service does not start.
Events in the Windows Event Viewer:
The CiscoWorks Tomcat Servlet Engine service terminated unexpectedly. It has done this 1 time(s).
output pdshow and file stderr.log, hs_err_pid2128.log attached.
Do you have an idea how to resolve this?
Thanks!

The only things which I see are wrong are the start types for the IPM NG database engine and HUM database engine services. They must be set to Manual, not Automatic. However, that would not account for the Tomcat crash. The crash points to an error in the code which processes regdaemon.xml, but I see no reason why that should be failing. As I said before, I think it would be best to open a Service Request. Remote access would be helpful to dig into this problem in more detail.
Please support CSC Helps Haiti
https://supportforums.cisco.com/docs/DOC-8895
https://supportforums.cisco.com

Is it possible not to use System.out.println?

Hi guyz,
Can anyone tell me if there is a way not to use System.out.println but produce the output on the command prompt? I need to add two numbers which are accepted through the args(command prompt). I have to add them and show them on command prompt without using System.out.println. Can ANYONE HELP?

Hi guyz,
Can anyone tell me if there is a way not
s a way not to use System.out.println but produce the
output on the command prompt? I need to add two
numbers which are accepted through the args(command
prompt). I have to add them and show them on command
prompt without using System.out.println. Can ANYONE
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Why System.out.println not PrintStream.println ?

Hi, just a beginner question
I just wonder why should we use System.out.println, not PrintStream.println ?
the field out in the System class is the instance of PrintStream class, isn't it?
So why don't we just use the PrintStream class directly?
Thanks..
Edited by: riff_almighty on Oct 27, 2007 3:27 AM

According to the api:
A PrintStream adds functionality to another output stream, namely the ability to print representations of various data values conveniently. Two other features are provided as well. Unlike other output streams, a PrintStream never throws an IOException; instead, exceptional situations merely set an internal flag that can be tested via the checkError method. Optionally, a PrintStream can be created so as to flush automatically; this means that the flush method is automatically invoked after a byte array is written, one of the println methods is invoked, or a newline character or byte ('\n') is written.
So there is nowhere mentioned about the PrintStream associated with the user console. System.out is the one instance of PrintStream which is associated with the console...
Also println() is not a static method and cant be called upon the class...
Edited by: VijayBabu on Oct 27, 2007 12:51 AM

Tomcat Servlet: System.out.println in servlet not printing to catalina.out

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