Hello Ewen, Thanks for the response. I am running this on an EC2 instance, instead of com.spnotes...i tried the path like home.ec2-user...HelloKafkaProducer, but that did not work.
Update/Edit: Fixed it...I had to move my java file to src/main/java and then do the mvn clean install. It seemed that it could not find HPK.java unless it was in that directory. Thanks! On Tue, Jan 20, 2015 at 1:27 PM, Ewen Cheslack-Postava <e...@confluent.io> wrote: > You should only need jar.with.dependencies.jar -- maven-assembly-plugin's > jar-with-dependencies mode collects all your code and project dependencies > into one jar file. It looks like the problem is that your mainclass is set > to only 'HelloKafkaProducer'. You need to specify the full name > 'com.spnotes.kafka.HelloKafkaProducer'. Then running > > java -jar jar.with.dependencies.jar > > should work. Alternatively, you can put the jar on the class path and then > specify the exact class you want to run > > java -cp jar.with.dependencies.jar com.spnotes.kafka.HelloKafkaProducer > > > On Tue, Jan 20, 2015 at 11:43 AM, Su She <suhsheka...@gmail.com> wrote: > > > Hello Everyone, > > > > Sorry for the duplicate post, I hadn't subscribed to the list yet, so I > > couldn't reply to suggestions. That has been fixed now. > > > > 1) Using Maven, I wrote a Kafka Producer similar to the one found here: > > > > > https://github.com/pppsunil/HelloKafka/blob/master/src/main/java/com/spnotes/kafka/HelloKafkaProducer.java > > > > 2) This is my pom file: > > > > <?xml version="1.0" encoding="UTF-8"?> <project xmlns=" > > http://maven.apache.org/POM/4.0.0"; xmlns:xsi=" > > http://www.w3.org/2001/XMLSchema-instance"; xsi:schemaLocation=" > > http://maven.apache.org/POM/4.0.0 > > http://maven.apache.org/xsd/maven-4.0.0.xsd";> > > <modelVersion>4.0.0</modelVersion> <groupId>HelloKafka</groupId> > > <artifactId>HelloKafka</artifactId> <version>1.0-SNAPSHOT</version> > <build> > > <plugins> <plugin> <groupId>org.apache.maven.plugins</groupId> > > <artifactId>maven-jar-plugin</artifactId> <version>2.2</version> <!-- > > nothing here --> </plugin> <plugin> > > <groupId>org.apache.maven.plugins</groupId> > > <artifactId>maven-assembly-plugin</artifactId> > > <version>2.2-beta-4</version> <configuration> <descriptorRefs> > > <descriptorRef>jar-with-dependencies</descriptorRef> </descriptorRefs> > > <archive> <manifest> <mainClass>HelloKafkaProducer</mainClass> > </manifest> > > </archive> </configuration> <executions> <execution> > <phase>package</phase> > > <goals> <goal>single</goal> </goals> </execution> </executions> </plugin> > > </plugins> </build> <dependencies> <dependency> > > <groupId>org.apache.kafka</groupId> <artifactId>kafka_2.10</artifactId> > > <version>0.8.2-beta</version> <scope>compile</scope> <exclusions> > > <exclusion> <artifactId>jmxri</artifactId> <groupId>com.sun.jmx</groupId> > > </exclusion> <exclusion> <artifactId>jms</artifactId> > > <groupId>javax.jms</groupId> </exclusion> <exclusion> > > <artifactId>jmxtools</artifactId> <groupId>com.sun.jdmk</groupId> > > </exclusion> </exclusions> </dependency> <dependency> > > <groupId>org.slf4j</groupId> <artifactId>slf4j-log4j12</artifactId> > > <version>1.5.6</version> </dependency> <dependency> > > <groupId>org.scala-lang</groupId> <artifactId>scala-library</artifactId> > > <version>2.10.4</version> </dependency> <dependency> > > <groupId>org.scala-lang</groupId> <artifactId>scala-compiler</artifactId> > > <version>2.10.4</version> </dependency> <dependency> > > <groupId>org.apache.kafka</groupId> <artifactId>kafka_2.10</artifactId> > > <version>0.8.2-beta</version> </dependency> <dependency> > > <groupId>com.101tec</groupId> <artifactId>zkclient</artifactId> > > <version>0.3</version> </dependency> <dependency> > > <groupId>com.yammer.metrics</groupId> > <artifactId>metrics-core</artifactId> > > <version>2.2.0</version> </dependency> <dependency> > > <groupId>org.apache.kafka</groupId> > <artifactId>kafka-clients</artifactId> > > <version>0.8.2-beta</version> </dependency> <dependency> > > <groupId>org.apache.maven.plugins</groupId> > > <artifactId>maven-assembly-plugin</artifactId> <version>2.4</version> > > </dependency> </dependencies> </project> > > > > 3) I am really lost on how to run kafka producer from the command line. I > > have followed the instructions here as seen in my above pom: > > > > > http://stackoverflow.com/questions/1814526/problem-building-executable-jar-with-maven > > > > 4) So I have my HKP.java file, then the pom file I have shown above and > > then I do mvn clean install. It builds the target directory with two jar > > files...what is my next step? I try java -cp jar.with.dependencies.jar > -jar > > main.jar, but it says no main manifest attribute. I try java -cp > > jar.with.dependencies HKP, but it says it can't find class HKP > > > > I have a feeling I am not writing the mainClass properly as most online > > examples say com.example.class, but I'm not sure how that translates to > > working on EC2. > > > > Thanks a lot for the help! > > > > -Su > > > > > > -- > Thanks, > Ewen >
