Injecting a Logger within a Java SE application results in a NullPointerException

[feder]

Hi,

I'm working on a new open source Java SE library. Presumably I'm missing a step about injection of a Log4J instance, since I always receive a NullpointerException when I wish to log. E.g. invoking logger.warning("foo").

It goes without saying, that I have added Weld SE to may Maven dependencies

     {code:xml}<dependency>
            <groupId>org.jboss.weld</groupId>
            <artifactId>weld-se</artifactId>
            <version>1.0.1-Final</version>
        </dependency>{code}

I also added the beans.xml to /src/main/resources/META-INF/

I added the producer method.

{code}
package com.melinxa.logic.factories;
import javax.enterprise.inject.Produces;
import javax.enterprise.inject.spi.InjectionPoint;
import org.apache.log4j.Logger;
public class LogFactory {
    @Produces
    public Logger createLogger(InjectionPoint injectionPoint) {
        return Logger.getLogger(injectionPoint.getMember().getDeclaringClass().getName());
    }
}
{code}

Finally, I wish to inject a Logger with each of my Java files. But it returns a NullPointerException.

{code}@Inject Logger logger{code}

What is it that I'm missing? Why is the logger variable not instantiated?

Again, it all works fine with Java EE (e.g. JBOSS AS 7) but it fails with a simple Java SE application.

thanks a lot for any hints.

Feder

[jharting]

You are using very old version of Weld. I suggest upgrading to

<dependency>

  <groupId>org.jboss.weld.se</groupId>

  <artifactId>weld-se</artifactId>

  <version>2.0.0.Beta2</version>

</dependency>

or 1.1.10.Final.

[feder]

Dear Jozef, Sorry, I got dragged away for another project. Will check later (though I believe I have tried the latest version, too). thanks.