[slf4j-user] How to debug sl4j

[Farrukh Najmi]

It appears that my immediate problem was solved when I specified 
-DforkMode=none to maven-sure-fire-plugin's test goal:

mvn test -DforkMode=none -Dtest=MyTestClass

Now I see debug messages from Hibernate. So this *does* seem to be some 
sort of classloader issue.

It does make me curious why using jcl-over-slf4j did not fix the 
problem. Any ideas?

Farrukh Najmi wrote:
> Hello,
>
> My project currently uses JCL. I have this strange problem where I can 
> control log4j messages for hibernate via log4j.properties
> in my deployed servlet but cannot do the same for my junit tests that 
> run via maven-surefire-plugin.
>
> Reading up I learned about JCLs extreme vulnerability to classloader 
> hacks and how it can behave oddly under different classloader situations.
> So I decided to give slj4j a try.
>
> I followed instruction for gradual migration here:
>
> <http://www.slf4j.org/legacy.html#jcl-over-slf4j>
>
> In my modules pom I added the following dependencies:
>
>     <dependency>
>       <groupId>org.slf4j</groupId>
>       <artifactId>slf4j-api</artifactId>
>       <version>1.5.5</version>
>     </dependency>
>     <dependency>
>       <groupId>org.slf4j</groupId>
>       <artifactId>slf4j-log4j12</artifactId>
>       <version>1.5.5</version>
>     </dependency>
>     <dependency>
>       <groupId>org.slf4j</groupId>
>       <artifactId>jcl-over-slf4j</artifactId>
>       <version>1.5.5</version>
>     </dependency>    
>
> The good thing is that I now seem to get exactly the same log output 
> that I did before.
> However, I was expecting the missing hibernate log messages to start 
> appearing but they
> did not.
>
> I had assumed that since the same log4j.properties file works in the 
> servlet but does not work
> in the junit test that the problem must be classloader related and that 
> using sl4j would fix it.
>
> I did not get the anticipated joy.
>
> Would a kind soul guide me as to what I should try next?
>
> TIA for your help.
>
>   


-- 
Regards,
Farrukh Najmi

Web: http://www.wellfleetsoftware.com