Yes perhaps the Maven-conversion crew can comment on how you pass
params to the build -- I think this part was brought over?
Basically you need to fill in the name of your Recommender class
implementation in web.xml -- you see the placeholder
${recommender.class}? The old script took this as a command line param
and I believe the new one has a similar mechanism.
I think for now you could just edit web.xml manually to achieve the same thing.
On Mon, Mar 2, 2009 at 11:11 PM, Matthew Roberson <[email protected]> wrote:
> Have installed and built mahout following the directions @
> cwiki.apache.org/MAHOUT
>
> Wanted to run the Taste demo from Apache Taste Documentation: grouplens
> demo.
>
> Successfully built the example web application: mahout-taste.war using
> ant.
>
> However, when trying to run web application in Tomcat, I get the
> following error:
> HTTP Status 500 -
>
> ________________________________________________________________________
>
> type Exception report
>
> message
>
> description The server encountered an internal error () that prevented
> it from fulfilling this request.
>
> exception
>
> javax.servlet.ServletException:
> org.apache.mahout.cf.taste.common.TasteException:
> java.lang.ClassNotFoundException: ${recommender.class}
>
> org.apache.mahout.cf.taste.web.RecommenderServlet.init(RecommenderServlet.java:78)
>
> org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102)
>
> org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:286)
>
> org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:845)
>
> org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:583)
>
> org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:447)
> java.lang.Thread.run(Thread.java:619)
>
> root cause
>
> org.apache.mahout.cf.taste.common.TasteException:
> java.lang.ClassNotFoundException: ${recommender.class}
>
> org.apache.mahout.cf.taste.web.RecommenderSingleton.<init>(RecommenderSingleton.java:53)
>
> org.apache.mahout.cf.taste.web.RecommenderSingleton.initializeIfNeeded(RecommenderSingleton.java:42)
>
> org.apache.mahout.cf.taste.web.RecommenderServlet.init(RecommenderServlet.java:76)
>
> org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102)
>
> org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:286)
>
> org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:845)
>
> org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:583)
>
> org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:447)
> java.lang.Thread.run(Thread.java:619)
>
> root cause
>
> java.lang.ClassNotFoundException: ${recommender.class}
>
> org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1387)
>
> org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1233)
> java.lang.ClassLoader.loadClassInternal(ClassLoader.java:319)
> java.lang.Class.forName0(Native Method)
> java.lang.Class.forName(Class.java:169)
>
> org.apache.mahout.cf.taste.web.RecommenderSingleton.<init>(RecommenderSingleton.java:51)
>
> org.apache.mahout.cf.taste.web.RecommenderSingleton.initializeIfNeeded(RecommenderSingleton.java:42)
>
> org.apache.mahout.cf.taste.web.RecommenderServlet.init(RecommenderServlet.java:76)
>
> org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102)
>
> org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:286)
>
> org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:845)
>
> org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:583)
>
> org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:447)
> java.lang.Thread.run(Thread.java:619)
>
> note The full stack trace of the root cause is available in the Apache
> Tomcat/6.0.18 logs.
>
>
> ________________________________________________________________________
> Apache Tomcat/6.0.18
>
> I am new to this and have not been able to resolve this problem...
>
> Can anyone help???
>
