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Posted to users@kafka.apache.org by David Novogrodsky <da...@gmail.com> on 2014/05/06 17:11:10 UTC
still looking for Maven POM for Java Kafka
All,
I am running some examples from the packet book Apache Kafka. I am
creating a HighLevelconsumer. I am getting an error when I try to run the
code:
--
C:\Users\david.j.novogrodsky\Documents\TestingKafka\target>java -cp
Kafka_test-1.0-SNAPSHOT.jar com.cat.HighLevelConsumer test
Exception in thread "main" java.lang.NoClassDefFoundError:
kafka/consumer/ConsumerConfig
at com.cat.HighLevelConsumer.<init>(HighLevelConsumer.java:32)
at com.cat.HighLevelConsumer.main(HighLevelConsumer.java:61)
Caused by: java.lang.ClassNotFoundException: kafka.consumer.ConsumerConfig
at java.net.URLClassLoader$1.run(Unknown Source)
at java.net.URLClassLoader$1.run(Unknown Source)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(Unknown Source)
at java.lang.ClassLoader.loadClass(Unknown Source)
at sun.misc.Launcher$AppClassLoader.loadClass(Unknown Source)
at java.lang.ClassLoader.loadClass(Unknown Source)
--
Is this an error with the POM?
David Novogrodsky
david.novogrodsky@gmail.com
http://www.linkedin.com/in/davidnovogrodsky
Re: still looking for Maven POM for Java Kafka
Posted by Steven A Robenalt <sr...@stanford.edu>.
Hi Dave,
Here's a POM I use to build the examples. It's pretty simple, including
kafka 0.8.0 with scala 2.9.2 libs, and targeting Java 7. I also made a
couple of mods to make things easier:
1) I use log4j 1.2.17 to eliminate a log4j 1.2.15 dependency on the sun
jdmk.
2) I use the maven dependency plugin to build a lib folder that has all the
jars you need for the runtime classpath.
Hope it helps,
Steve
On Tue, May 6, 2014 at 8:11 AM, David Novogrodsky <
david.novogrodsky@gmail.com> wrote:
> All,
>
> I am running some examples from the packet book Apache Kafka. I am
> creating a HighLevelconsumer. I am getting an error when I try to run the
> code:
> --
> C:\Users\david.j.novogrodsky\Documents\TestingKafka\target>java -cp
> Kafka_test-1.0-SNAPSHOT.jar com.cat.HighLevelConsumer test
> Exception in thread "main" java.lang.NoClassDefFoundError:
> kafka/consumer/ConsumerConfig
> at com.cat.HighLevelConsumer.<init>(HighLevelConsumer.java:32)
> at com.cat.HighLevelConsumer.main(HighLevelConsumer.java:61)
> Caused by: java.lang.ClassNotFoundException: kafka.consumer.ConsumerConfig
> at java.net.URLClassLoader$1.run(Unknown Source)
> at java.net.URLClassLoader$1.run(Unknown Source)
> at java.security.AccessController.doPrivileged(Native Method)
> at java.net.URLClassLoader.findClass(Unknown Source)
> at java.lang.ClassLoader.loadClass(Unknown Source)
> at sun.misc.Launcher$AppClassLoader.loadClass(Unknown Source)
> at java.lang.ClassLoader.loadClass(Unknown Source)
> --
> Is this an error with the POM?
> David Novogrodsky
> david.novogrodsky@gmail.com
> http://www.linkedin.com/in/davidnovogrodsky
>
--
Steve Robenalt
Software Architect
HighWire | Stanford University
425 Broadway St, Redwood City, CA 94063
srobenal@stanford.edu
http://highwire.stanford.edu
Re: still looking for Maven POM for Java Kafka
Posted by David Novogrodsky <da...@gmail.com>.
Yury,
Thank you for the reply. It was helpful.
David Novogrodsky
david.novogrodsky@gmail.com
http://www.linkedin.com/in/davidnovogrodsky
On Tue, May 6, 2014 at 10:47 AM, Yury Ruchin <yu...@gmail.com> wrote:
> Looks like Kafka classes is not on your classpath. You should either
> assemble an uber-jar from your project (e. g. using Maven Assembly plugin
> with jar-with-dependencies descriptor ref) or add location of Kafka classes
> to your classpath.
>
>
> 2014-05-06 19:11 GMT+04:00 David Novogrodsky <david.novogrodsky@gmail.com
> >:
>
> > All,
> >
> > I am running some examples from the packet book Apache Kafka. I am
> > creating a HighLevelconsumer. I am getting an error when I try to run
> the
> > code:
> > --
> > C:\Users\david.j.novogrodsky\Documents\TestingKafka\target>java -cp
> > Kafka_test-1.0-SNAPSHOT.jar com.cat.HighLevelConsumer test
> > Exception in thread "main" java.lang.NoClassDefFoundError:
> > kafka/consumer/ConsumerConfig
> > at com.cat.HighLevelConsumer.<init>(HighLevelConsumer.java:32)
> > at com.cat.HighLevelConsumer.main(HighLevelConsumer.java:61)
> > Caused by: java.lang.ClassNotFoundException:
> kafka.consumer.ConsumerConfig
> > at java.net.URLClassLoader$1.run(Unknown Source)
> > at java.net.URLClassLoader$1.run(Unknown Source)
> > at java.security.AccessController.doPrivileged(Native Method)
> > at java.net.URLClassLoader.findClass(Unknown Source)
> > at java.lang.ClassLoader.loadClass(Unknown Source)
> > at sun.misc.Launcher$AppClassLoader.loadClass(Unknown Source)
> > at java.lang.ClassLoader.loadClass(Unknown Source)
> > --
> > Is this an error with the POM?
> > David Novogrodsky
> > david.novogrodsky@gmail.com
> > http://www.linkedin.com/in/davidnovogrodsky
> >
>
Re: still looking for Maven POM for Java Kafka
Posted by Yury Ruchin <yu...@gmail.com>.
Looks like Kafka classes is not on your classpath. You should either
assemble an uber-jar from your project (e. g. using Maven Assembly plugin
with jar-with-dependencies descriptor ref) or add location of Kafka classes
to your classpath.
2014-05-06 19:11 GMT+04:00 David Novogrodsky <da...@gmail.com>:
> All,
>
> I am running some examples from the packet book Apache Kafka. I am
> creating a HighLevelconsumer. I am getting an error when I try to run the
> code:
> --
> C:\Users\david.j.novogrodsky\Documents\TestingKafka\target>java -cp
> Kafka_test-1.0-SNAPSHOT.jar com.cat.HighLevelConsumer test
> Exception in thread "main" java.lang.NoClassDefFoundError:
> kafka/consumer/ConsumerConfig
> at com.cat.HighLevelConsumer.<init>(HighLevelConsumer.java:32)
> at com.cat.HighLevelConsumer.main(HighLevelConsumer.java:61)
> Caused by: java.lang.ClassNotFoundException: kafka.consumer.ConsumerConfig
> at java.net.URLClassLoader$1.run(Unknown Source)
> at java.net.URLClassLoader$1.run(Unknown Source)
> at java.security.AccessController.doPrivileged(Native Method)
> at java.net.URLClassLoader.findClass(Unknown Source)
> at java.lang.ClassLoader.loadClass(Unknown Source)
> at sun.misc.Launcher$AppClassLoader.loadClass(Unknown Source)
> at java.lang.ClassLoader.loadClass(Unknown Source)
> --
> Is this an error with the POM?
> David Novogrodsky
> david.novogrodsky@gmail.com
> http://www.linkedin.com/in/davidnovogrodsky
>