@Inject Logger does not work

[sg26565]

I am trying to get the LoggerProducer from the seam-solder package to work, but I always get the error message:

WELD-001408 Unsatisfied dependencies for type [Logger] with qualifiers [@Default] at injection point [[field] @Inject private de.treichels.test.ejb.StartupSingleton.logger]

My Java class looks like this:

@Startup
@Singleton
public class StartupSingleton {
    @Inject
    private Logger logger;


    @Inject
    private Event<ContainerStartupEvent> event;


    @PostConstruct
    public void Start() {
        logger.info("fire startup event");
        event.fire(new ContainerStartupEvent());
    }
}

I was expecting that the Logger instance gets created by the org.jboss.seam.solder.logging.LoggerProducer class.

class LoggerProducer {
   @Produces
   Logger produceLog(InjectionPoint injectionPoint) { ...}
}

I've added seam-solder-3.0.0.Final.jar as a dependency and it gets packaged into the resulting ear alongside with my ejb.jar. My application.xml looks like this:

<?xml version="1.0" encoding="UTF-8"?>
<application xmlns="http://java.sun.com/xml/ns/javaee" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/application_6.xsd" version="6">
  <display-name>myApp</display-name>
  <module>
    <ejb>myEjb-0.0.1-SNAPSHOT.jar</ejb>
  </module>
</application>

I seems that the LoggerProducer from the seam-solder-3.0.0.Final.jar is not recognized by the Weld runtime and therefore, no Logger get injected into my ejb.

Can anyone help?

[sg26565]

I found a solution.

The seam-solder-3.0.0.Final.jar needs to be packaged into the lib subfolder of the ear. This is how my pom.xml for the ear looks like:

<build>
     <plugins>
          <plugin>
               <groupId>org.apache.maven.plugins</groupId>
               <artifactId>maven-ear-plugin</artifactId>
               <version>2.4.2</version>
               <configuration>
                    <version>6</version>
                    <defaultLibBundleDir>lib</defaultLibBundleDir>
               </configuration>
          </plugin>
          ...
     </plugins>
</build>

Details can be found in https://docs.jboss.org/author/display/AS7/Class+Loading+in+AS7. I assume that adding a Class-Path: entry to MANIFEST.MF would also work, but I didn't test this.

Here is another post on a related issue: http://community.jboss.org/thread/167102

[jimdwyer]

Can you post you import statements.  I have a similar issue.  My code compiles but will not deploy.

I get this error

Caused by: java.lang.NoClassDefFoundError: Lorg/apache/log4j/Logger

It seems that log4j is part of the server but I can't seem to get ahold of it.

Here is my code:

@Startup
@Singleton
@Remote(IngestRemote.class)
@Local(IngestLocal.class)
public class IngestMBean implements IngestRemote, IngestLocal{
 
private static final Logger log = Logger.getLogger(IngestMBean.class);
//@Inject private Logger log;

@PostConstruct
public void postConstruct() throws Exception{
         log.info("postConstruct");
}

@PreDestroy
public void preDestroy() throws Exception{
  log.info("preDestroy");
}

}

I tried the @Inject and the old fashioned way with the same result.  What am I doing wrong.  I have no .xml files.  I let the bean autowire.

[sg26565]

I'm using JBoss logging:

import javax.annotation.PostConstruct;

import javax.ejb.Singleton;

import javax.ejb.Startup;

import javax.inject.Inject;

import org.jboss.logging.Logger

Don't use org.apache.log4j.Logger directly. JBoss logging is a logging facade that abstracts the actual logging framework similar to commons logging or slf4j.

[jimdwyer]

Thats it.  Thanks.