Re: log4jResource setting in GBean: ApplicationLog4jConfigurationGBean

[David Jencks]

On Jun 8, 2009, at 11:03 PM, viola.lu wrote:

hi, i follow steps in

http://cwiki.apache.org/GMOxDOC22/configuring-application-specific-logging-with-log4j.html ,

and add gbean information in geronimo-web.xml using log4jResource.

<dep:gbean

class = "org .apache .geronimo.system.logging.log4j.ApplicationLog4jConfigurationGBean"

name="testlogLog4jConfiguration">

   <dep:attribute
name="log4jResource">META-INF/log4j.properties</dep:attribute>

   </dep:gbean>

But "Can't find META-INF/log4j.properties " error always exists. if i use

log4jFile setting like below:

<dep:gbean

class = "org .apache .geronimo.system.logging.log4j.ApplicationLog4jConfigurationGBean"

name="testlogLog4jConfiguration">
     <dep:attribute
name="log4jFile">var/log/log4j.properties</dep:attribute>
   <dep:reference
name="ServerInfo"><dep:name>ServerInfo</dep:name></dep:reference>
   <!--<dep:attribute
name="log4jResource">META-INF/log4j.properties</dep:attribute>-->
   </dep:gbean>

it works well.

I looked into ApplicationLog4jConfigurationGBean code:
...
InputStream in;
       if (log4jFile != null) {
           File file = serverInfo.resolveServer(log4jFile);
           in = new FileInputStream(file);
       } else if (log4jResource != null) {
           in = classloader.getResourceAsStream(log4jResource);
           if (in == null) {

throw new NullPointerException("No log4j properties resource

found at " + log4jResource);
           }
       } else {
           return;
       }

...

in = classloader.getResourceAsStream(log4jResource);

ClassLoader will search this file from classpath, and my project structure

is:

LogWeb
   ---src(testlog.java
   ---WebContent
         META-INF(log4j.properties)
         WEB-INF
         index.jsp
   ----

Why it can't find out file META-INF/log4j.properties?

Because that's not in your classpath.

Try WEB-INF/classes/META-INF/log4j.properties.

thanks
david jencks

Anyone can figure it out? Thanks.
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