Right I fixed the problem by specifically adding my plugin jar to the class path. Is this right? Is there some place I can add it in the build scripts to do this automatically?
Regards On 14 November 2009 at 16:40 "david.stu...@progressivealliance.co.uk" <david.stu...@progressivealliance.co.uk> wrote: > Hi, > > I am trying to write a plugin for nutch and am having real troubles getting it > registered in the system. I have created in src/plugin and added it to both > the > build.xml in plugin and to nutch-site.xml now it seems to build ok but when I > try to run a basic crawl urls -dir crawl -depth 3 -topN 2 I see the plugin > registered in the hadoop.log > > 2009-11-14 14:57:45,739 INFO plugin.PluginRepository - Html Filter Parse > Plug-in (parse-htmlfilter) > > But then get the error message below. I have followed all of the tutorials but > they are mostly for nutch 0.9 and have error in them which I have worked > through > > Thanks for your help > > regards, > Dave > java.lang.RuntimeException: org.apache.nutch.plugin.PluginRuntimeException: > java.lang.ClassNotFoundException: > org.apache.nutch.parse.htmlfilter.HtmlfilterIndexer > at > org.apache.nutch.indexer.IndexingFilters.<init>(IndexingFilters.java:100) > at > org.apache.nutch.indexer.IndexerMapReduce.configure(IndexerMapReduce.java:61) > at > org.apache.hadoop.util.ReflectionUtils.setConf(ReflectionUtils.java:58) > at > org.apache.hadoop.util.ReflectionUtils.newInstance(ReflectionUtils.java:83) > at org.apache.hadoop.mapred.MapRunner.configure(MapRunner.java:34) > at > org.apache.hadoop.util.ReflectionUtils.setConf(ReflectionUtils.java:58) > at > org.apache.hadoop.util.ReflectionUtils.newInstance(ReflectionUtils.java:83) > at org.apache.hadoop.mapred.MapTask.run(MapTask.java:338) > at > org.apache.hadoop.mapred.LocalJobRunner$Job.run(LocalJobRunner.java:138) > Caused by: org.apache.nutch.plugin.PluginRuntimeException: > java.lang.ClassNotFoundException: > org.apache.nutch.parse.htmlfilter.HtmlfilterIndexer > at > org.apache.nutch.plugin.Extension.getExtensionInstance(Extension.java:166) > at > org.apache.nutch.indexer.IndexingFilters.<init>(IndexingFilters.java:70) > ... 8 more > Caused by: java.lang.ClassNotFoundException: > org.apache.nutch.parse.htmlfilter.HtmlfilterIndexer > at java.net.URLClassLoader$1.run(URLClassLoader.java:200) > at java.security.AccessController.doPrivileged(Native Method) > at java.net.URLClassLoader.findClass(URLClassLoader.java:188) > at java.lang.ClassLoader.loadClass(ClassLoader.java:319) > at java.lang.ClassLoader.loadClass(ClassLoader.java:254) > at > org.apache.nutch.plugin.Extension.getExtensionInstance(Extension.java:156)
