Amit,
Here is some sample code of how we have used Log4J in servlets.
public class StartupServlet extends HttpServlet
{
static Category cat =
Category.getInstance(StartupServlet.class.getName());
public void init()
{
URL propsURL = Util.configureLog4j();
PropertyConfigurator.configure(propsURL);
cat.info( "Starting the app");
}
...........
}
//here is the Util class
public class Util
{
public static URL configureLog4j()
{
ClassLoader loader = Thread.currentThread().getContextClassLoader();
URL propertiesURL = loader.getResource("log4j.properties");
return propertiesURL;
}
}
Thanks
Zeba
Amit Vaidya wrote:
> Hi,
>
> If following code is valid
> Category cat = Category.getInstance(NameOfTheServlet.class.getName());
>
> then, could you please give me an example of how to use Log4J with
> servlets?
> I need to use XML file as configuration file which should be parsed
> thru' servlet
> and necessary logging should be done.
>
> Currently I've used the following code (inside doPost method):
> ---------------
> static Category cat =
> Category.getInstance(assign4Servlet.class.getName());
>
> try
> {
> URL url =
> getServletConfig().getServletContext().getResource("/sample1.xml");
> DocumentBuilderFactory factory =
> DocumentBuilderFactory.newInstance();
> factory.setValidating(true);
> DocumentBuilder builder =
> factory.newDocumentBuilder();
> Document doc =
> builder.parse(url.toExternalForm());
>
> DOMConfigurator.configure(doc.getDocumentElement());
> --------------
> -------- some servlet code --------
> --------------
> cat.info("Inside doPost method of the servlet");
> cat.debug("Inside doPost method of the
> servlet");
>
> }
> catch(ParserConfigurationException eP)
> {
>
> }
> catch(SAXException eS)
> {
>
> }
>
> --------------------
> file sample1.xml is in the same directory as the servlet class file.
> But there is no log being generated.
> What could be the problem?
>
> Thanks & regards,
> Amit
>
> ________________________________________________________________________
> Amit Vaidya Infosys® Pune, India
> Tel : 91-2139-32801 (outside Pune) 95-2139-32801 (from Pune) Ext : 4342
>
> -----Original Message-----
> From: Ceki Gülcü [mailto:[EMAIL PROTECTED]]
> Sent: Wednesday, June 13, 2001 2:20 PM
> To: LOG4J Users Mailing List; [EMAIL PROTECTED]
> Subject: Re: Help needed : Log4J with servlets
>
> At 17:30 13.06.2001 +1000, SCOTT FARQUHAR wrote:
> >The problem is that Category takes a String, not a class.
>
> Hello Scott,
>
> Categoty.getInstance takes a string or a class. Assuming that the
> MyFooBar class is in the ch.qos package. The following a strictly
> equivalent:
>
> Category x = Category.getInstance("ch.qos.MyFooBar");
> Category x = Category.getInstance(MyFooBar.class.getName());
> Category x = Category.getInstance(MyFooBar.class);
>
> >Category cat = Category.getInstance(NameOfTheServlet.class.getName());
> >
> >If you turn off friendly error messages in IE, you would have been able
> to see this error.
> >
> >Scott
> >
> >
> >>>> [EMAIL PROTECTED] 06/13/01 01:15pm >>>
> >Hi,
> >
> >I'm trying to use log4J with servlets (running on weblogic)
> >When I try to create a category instance inside my servlet,
> >--------------
> >Category cat = Category.getInstance(NameOfTheServlet.class);
> >--------------
> >This causes internal server error. What exactly could be the problem?
> >I've imported the following packages in my servlet:
> >--------------
> >import org.apache.log4j.xml.DOMConfigurator;
> >import org.apache.log4j.Category;
> >import org.apache.log4j.Priority;
> >--------------
> >The java file compiles without any warnings or errors but the servlet
> >during runtime gives 'Internal server error'.
> >
> >I would really appreciate a sample code that illustrates the usage of
> >log4J with
> >servlets.
> >
> >Thanks & regards,
> >Amit
> >
> >---------------------------------------------------------------------
> >To unsubscribe, e-mail: [EMAIL PROTECTED]
> >For additional commands, e-mail: [EMAIL PROTECTED]
> >
> >
> >
> >-----------------------------------------------------------
> >This message has been scanned by MailSweeper.
> >-----------------------------------------------------------
> >
> >
> >
> >-----------------------------------------------------------
> >This e-mail is solely for the use of the intended recepient
> >and may contain information which is confidential or
> >privileged. Unauthorised use of its contents is prohibited.
> >If you have received this e-mail in error, please notify
> >the sender immediately via e-mail and then delete the
> >original e-mail.
> >-----------------------------------------------------------
> >
> >---------------------------------------------------------------------
> >To unsubscribe, e-mail: [EMAIL PROTECTED]
> >For additional commands, e-mail: [EMAIL PROTECTED]
>
> --
> Ceki Gülcü
>
> ---------------------------------------------------------------------
> To unsubscribe, e-mail: [EMAIL PROTECTED]
> For additional commands, e-mail: [EMAIL PROTECTED]
>
> ---------------------------------------------------------------------
> To unsubscribe, e-mail: [EMAIL PROTECTED]
> For additional commands, e-mail: [EMAIL PROTECTED]
---------------------------------------------------------------------
To unsubscribe, e-mail: [EMAIL PROTECTED]
For additional commands, e-mail: [EMAIL PROTECTED]
