You don't run "mvn pom.xml", just "mvn". Downloaded trunk version of.. Mahout? It doesn't come with any JAR file. Maven downloads all dependencies and that works.
You need to use 0.5 with the example code, not trunk. But the error shows that you don't have the Mahout code in your class path. You Java command has no classpath at all! Usually you are going to need to add at least "-cp path/to/jars". On Sun, Jun 17, 2012 at 11:37 AM, Paul Abernathy < [email protected]> wrote: > I also have gotten the Mahout in Action book recently and am stuck on the > first example. I downloaded the 0.6 distribution and downloaded and built > the MiA code. When I attempt to run the class from the command line, I get > this error: > > > java mia.recommender.ch02.**RecommenderIntro > Exception in thread "main" java.lang.**NoClassDefFoundError: > org/apache/mahout/cf/taste/**model/DataModel > Caused by: java.lang.**ClassNotFoundException: org.apache.mahout.cf.taste. > **model.DataModel > at java.net.URLClassLoader$1.run(**URLClassLoader.java:217) > at java.security.**AccessController.doPrivileged(**Native Method) > at java.net.URLClassLoader.**findClass(URLClassLoader.java:**205) > at java.lang.ClassLoader.**loadClass(ClassLoader.java:**321) > at sun.misc.Launcher$**AppClassLoader.loadClass(**Launcher.java:294) > at java.lang.ClassLoader.**loadClass(ClassLoader.java:**266) > Could not find the main class: mia.recommender.ch02.**RecommenderIntro. > Program will exit. > > > Am I missing a jar somewhere, or am I running with the wrong Mahout > version? > > When I change into the MiA directed and attempt to run it with Maven, I > get this error: > > mvn pom.xml > [INFO] Scanning for projects... > [INFO] > [INFO] ------------------------------**------------------------------** > ------------ > [INFO] Building Mahout in Action Examples 0.1 > [INFO] ------------------------------**------------------------------** > ------------ > [INFO] ------------------------------**------------------------------** > ------------ > [INFO] BUILD FAILURE > [INFO] ------------------------------**------------------------------** > ------------ > [INFO] Total time: 0.642s > [INFO] Finished at: Sun Jun 17 06:22:08 EDT 2012 > [INFO] Final Memory: 2M/15M > [INFO] ------------------------------**------------------------------** > ------------ > [ERROR] Unknown lifecycle phase "pom.xml". You must specify a valid > lifecycle phase or a goal in the format <plugin-prefix>:<goal> or > <plugin-group-id>:<plugin-**artifact-id>[:<plugin-version>**]:<goal>. > Available lifecycle phases are: validate, initialize, generate-sources, > process-sources, generate-resources, process-resources, compile, > process-classes, generate-test-sources, process-test-sources, > generate-test-resources, process-test-resources, test-compile, > process-test-classes, test, prepare-package, package, pre-integration-test, > integration-test, post-integration-test, verify, install, deploy, > pre-clean, clean, post-clean, pre-site, site, post-site, site-deploy. -> > [Help 1] > [ERROR] > [ERROR] To see the full stack trace of the errors, re-run Maven with the > -e switch. > [ERROR] Re-run Maven using the -X switch to enable full debug logging. > [ERROR] > [ERROR] For more information about the errors and possible solutions, > please read the following articles: > [ERROR] [Help 1] http://cwiki.apache.org/**confluence/display/MAVEN/** > LifecyclePhaseNotFoundExceptio**n<http://cwiki.apache.org/confluence/display/MAVEN/LifecyclePhaseNotFoundException> > > > I am new to Maven to it may be that I don't know how to run Maven > correctly. Also, when I downloaded the trunk version from svn I was not > able to get it to build (it seemed to be missing a few jar files but I > forget which ones), but that's a different issue. Right now I am trying to > figure out how to run the first examples in some version of Mahout. If > anybody knows how to run the examples I would greatly appreciate the > assistance. > > thanks, > > Paul > > > On 06/13/2012 12:20 PM, Sean Owen wrote: > >> (Since you also asked in the publisher's forum, and it pertains to the >> book, I will answer there rather than on the general Mahout mailing list.) >> >> On Wed, Jun 13, 2012 at 2:25 PM, Yaprak Ayazoglu >> <[email protected]>**wrote: >> >> Hi, >>> >>> I'm following "Mahout in Action" book to learn Mahout. I'm trying to run >>> the example codes in this book. I downloaded the codes and run >>> "RecommenderIntro.java" (a code at chapter 2 - ch2). >>> >>> After running this code I get the following error: >>> >>> Exception in thread "main" java.io.FileNotFoundException: intro.csv >>> at >>> >>> org.apache.mahout.cf.taste.**impl.model.file.FileDataModel.** >>> <init>(FileDataModel.java:160) >>> at >>> >>> org.apache.mahout.cf.taste.**impl.model.file.FileDataModel.** >>> <init>(FileDataModel.java:146) >>> at mia.recommender.ch02.**RecommenderIntro.main(** >>> RecommenderIntro.java:26) >>> at sun.reflect.**NativeMethodAccessorImpl.**invoke0(Native Method) >>> at >>> >>> sun.reflect.**NativeMethodAccessorImpl.**invoke(** >>> NativeMethodAccessorImpl.java:**57) >>> at >>> >>> sun.reflect.**DelegatingMethodAccessorImpl.**invoke(** >>> DelegatingMethodAccessorImpl.**java:43) >>> at java.lang.reflect.Method.**invoke(Method.java:601) >>> at com.intellij.rt.execution.**application.AppMain.main(** >>> AppMain.java:120) >>> >>> Can you help me to solve this problem? >>> >>> Thanks. >>> >>> -- >>> Yaprak >>> >>> >
