maven - Executing storm program but cannot find a class -


i cloned project https://github.com/storm-book/examples-ch02-getting_started, when execute command

mvn exec:java -dexec.mainclass="topologymain" -dexec.args="src/main/resources/words.txt"

i got following error message.

[info] scanning projects... [info]  [info] using builder org.apache.maven.lifecycle.internal.builder.singlethreaded.singlethreadedbuilder thread count of 1 [info]                                                                          [info] ------------------------------------------------------------------------ [info] building getting-started 0.0.1-snapshot [info] ------------------------------------------------------------------------ [info]  [info] --- exec-maven-plugin:1.3:java (default-cli) @ getting-started --- [warning] warning: killafter deprecated. need ? please comment on mexec-6. [warning]  java.lang.classnotfoundexception: topologymain     @ java.net.urlclassloader$1.run(urlclassloader.java:217)     @ java.security.accesscontroller.doprivileged(native method)     @ java.net.urlclassloader.findclass(urlclassloader.java:205)     @ java.lang.classloader.loadclass(classloader.java:323)     @ java.lang.classloader.loadclass(classloader.java:268)     @ org.codehaus.mojo.exec.execjavamojo$1.run(execjavamojo.java:281)     @ java.lang.thread.run(thread.java:701) [info] ------------------------------------------------------------------------ [info] build failure [info] ------------------------------------------------------------------------ [info] total time: 1.771 s [info] finished at: 2014-06-01t11:29:45-06:00 [info] final memory: 11m/160m [info] ------------------------------------------------------------------------ [error] failed execute goal org.codehaus.mojo:exec-maven-plugin:1.3:java (default-cli) on project getting-started: exception occured while executing java class. topologymain -> [help 1] [error]  [error] see full stack trace of errors, re-run maven -e switch. [error] re-run maven using -x switch enable full debug logging. [error]  [error] more information errors , possible solutions, please read following articles: [error] [help 1] http://cwiki.apache.org/confluence/display/maven/mojoexecutionexception

you should run mvn compile, produce topologymain.class, before can execute mvn exec:java ....

this can specified in single mvn command chaining targets

mvn compile exec:java -dexec.mainclass="topologymain" -dexec.args="src/main/resources/words.txt"

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