RE: [Off Topic] Turn on Logging in Tomcat 4.0.1

[Jenkins, David]

All Logs are in the logs directory which is off your tomcat installation
directory.

Dave


-Original Message-
From: Matt Raible [mailto:[EMAIL PROTECTED]]
Sent: Thursday, 17 January 2002 6:10 a.m.
To: [EMAIL PROTECTED]
Subject: [Off Topic] Turn on Logging in Tomcat 4.0.1


I'm hoping someone on this list will know the solution to this.  I'm using
Tomcat 4.0.1 on a Windows platform.

I start Tomcat and run it in a console window on my machine, but I never see
any logging messages.  I *know* they're there, because when I put the same
application on another machine (fresh install of Tomcat) - I get all the
startup messages from my struts app.

My question is - how do I turn on logging, so I get more than just this:

Starting service Tomcat-Standalone
Apache Tomcat/4.0.1
Starting service Tomcat-Apache
Apache Tomcat/4.0.1



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RE: How to use Log4j with a startup logging servlet

[Jenkins, David]

Hi Eric, here's how use Logging to provide method call logging.

import org.apache.log4j.Category;

public class myclass {

  private static final Category log = Category.getInstance(myclass .class);

  public void mymethod() {
try {
  log.debug("enter mymethod");
}
finally {
  log.debug("exit mymethod");
}
  }
}

Dave

-Original Message-
From: Eric L. Ma [mailto:[EMAIL PROTECTED]]
Sent: Wednesday, 16 January 2002 3:58 p.m.
To: 'Struts Users Mailing List'
Subject: RE: How to use Log4j with a startup logging servlet


Thanks, gentlemen.  I start to get the idea but am still fuzzy on how to
issue logging requests in my custom Action classes.  Do I have to
declare a static Category variable in each and every Action class I
write?  Please share some code on how logging is actually done, now that
I know how to set up the startup servlet.

Eric

-Original Message-
From: Eric Ma [mailto:[EMAIL PROTECTED]] 
Sent: Tuesday, January 15, 2002 12:33 PM
To: [EMAIL PROTECTED]
Subject: How to use Log4j with a startup logging servlet

I want to use Log4J for logging exceptions thrown in a Struts-based web
app.  After searching through this list, I found 2 common solutions:

1. Extend the Struts ActionServlet and override the init() method to set
up a Log4J Category.  Then in any custom Action class I can just call
servlet.Category.debug() (let's assume Category is a protected or public
variable).

2. Write a separate startup servlet and again set up LOG4J in the init()
method.  But my question is, how do I invoke this servlet from my custom
Action class?  Do I need to do a RequestDispatcher.forward() to the
servlet when an exception is thrown?  Then how do I get back to the page
I am on to display the error message?

Eric Ma


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RE: about connectionPool

[Jenkins, David]

I use Tomcat 4.0.x which has connection pooling built in. The pooling jar is
available separately from http://tyrex.exolab.org/. The version bundled with
Tomcat 4.0.1 is missing some configuration options, this may be fixed in the
newer release.

Dave


-Original Message-
From: Struts Newsgroup [mailto:[EMAIL PROTECTED]]
Sent: Wednesday, 16 January 2002 9:25 p.m.
To: [EMAIL PROTECTED]
Subject: about connectionPool


Subject: about connectionPool
From: "Gary" <[EMAIL PROTECTED]>
 ===
Since most of u r using Structs, what kind of database connection pool do u
highly recommend to adopt? ( shareware will be better)

Thanks.

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RE: How to use Log4j with a startup logging servlet

[Jenkins, David]

If you're using Tomcat 4.0.x then the documentation shows how to use a
servlet to configure Log4J. Essentially you create a normal servlet, slap it
in your web.xml and configure it to load on startup.
I do this in all my web apps and also use the same method to init Velocity.
Here's a sample web.xml entry

  
log4j-init
Log4jInit

  log4j-init-file
  WEB-INF/classes/log4j.properties

1
  

and the init method from the servlet

  public void init() throws ServletException {
String prefix =  getServletContext().getRealPath("/");
String file = getInitParameter("log4j-init-file");
// if the log4j-init-file is not set, then no point in trying
if(file != null) {
  PropertyConfigurator.configure(prefix+file);
}
getServletContext().log("logging to: "+prefix+file);
  }



-Original Message-
From: Eric Ma [mailto:[EMAIL PROTECTED]]
Sent: Wednesday, 16 January 2002 6:33 a.m.
To: [EMAIL PROTECTED]
Subject: How to use Log4j with a startup logging servlet


I want to use Log4J for logging exceptions thrown in a Struts-based web app.
After searching through this list, I found 2 common solutions:

1. Extend the Struts ActionServlet and override the init() method to set up
a Log4J Category.  Then in any custom Action class I can just call
servlet.Category.debug() (let's assume Category is a protected or public
variable).

2. Write a separate startup servlet and again set up LOG4J in the init()
method.  But my question is, how do I invoke this servlet from my custom
Action class?  Do I need to do a RequestDispatcher.forward() to the servlet
when an exception is thrown?  Then how do I get back to the page I am on to
display the error message?

Eric Ma


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RE: iterate issue

[Jenkins, David]

Try declaring the return type as Collection. I had the same problem which
disappeared when I changed type from List to Collection.

Dave


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struts-user@jakarta.apache.org

[Jenkins, David]

Hi all,

First let me say that I know absolutely nothing about HTML. However that
doesn't deter me.
I'm trying to create a wizard framework in struts, you know the sort where
the are a number of pages linked by "next' and 'back' buttons.
So I have these buttons on my forms and need the action bean to determine
which button submitted the form. Looking at the documentation it seems that
I can use a 'property' attribute on my  tags and according to
the manual 'Name of the request parameter that will be included with this
submission, set to the specified value'. However when I examine the request
attributes for all my submit buttons in the action bean after the form has
been submitted, the attributes have no (null) values.
I would be grateful if someone can point me in the right direction.
Dave



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