Yes, this is a pure CLASSPATH issue. I haven't built a Nutch war in a while,
so I don't recall what is in it, but most likely it has WEB-INF/lib directory
with some jar files. One of these .... ah, let's just see. Here:
[EMAIL PROTECTED] trunk]$ unzip -l build/nutch-1.0-dev.war | grep jar | grep -v
plugin
125955 08-03-06 22:55 WEB-INF/lib/commons-cli-2.0-SNAPSHOT.jar
207723 09-10-05 11:34 WEB-INF/lib/commons-lang-2.1.jar
34242 03-28-07 00:02 WEB-INF/lib/commons-logging-1.0.4.jar
26202 07-16-05 13:59 WEB-INF/lib/commons-logging-api-1.0.4.jar
1707358 02-18-08 00:55 WEB-INF/lib/hadoop-0.16.0-core.jar
358180 06-27-06 11:55 WEB-INF/lib/log4j-1.2.13.jar
664675 02-18-08 00:55 WEB-INF/lib/lucene-core-2.3.0.jar
48567 02-18-08 00:55 WEB-INF/lib/lucene-misc-2.3.0.jar
29558 07-16-05 13:59 WEB-INF/lib/taglibs-i18n.jar
113156 02-18-08 00:55 WEB-INF/lib/tika-0.1-incubating.jar
124724 07-16-05 13:59 WEB-INF/lib/xerces-2_6_2-apis.jar
1010675 07-16-05 13:59 WEB-INF/lib/xerces-2_6_2.jar
550411 06-16-08 22:17 WEB-INF/lib/nutch-1.0-dev.jar
Note this last jar. That's what you'll want to have, because that has
CommonGrams:
[EMAIL PROTECTED] trunk]$ unzip build/nutch-1.0-dev.jar | grep Common
inflating: org/apache/nutch/analysis/CommonGrams$ArrayTokens.class
inflating: org/apache/nutch/analysis/CommonGrams$Filter.class
inflating: org/apache/nutch/analysis/CommonGrams.class
inflating: org/apache/nutch/metadata/CreativeCommons.class
I built my Nutch war with "ant war".
Otis
--
Sematext -- http://sematext.com/ -- Lucene - Solr - Nutch
----- Original Message ----
> From: John Thompson <[EMAIL PROTECTED]>
> To: [email protected]
> Sent: Monday, June 16, 2008 3:48:56 PM
> Subject: ClassNotFoundException: org.apache.nutch.analysis.CommonGrams
>
> Hi,
>
> I've been trying to debug this problem for the past few days in my recently
> set up Nutch installation. Essentially, the main page, about page, and help
> page are fine, but as soon as I try to submit a search query, I get the
> following stack trace (sorry for the length):
>
> *exception*
>
> org.apache.jasper.JasperException: org/apache/nutch/analysis/CommonGrams
>
> org.apache.jasper.servlet.JspServletWrapper.handleJspException(JspServletWrapper.java:460)
>
> org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:355)
> org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:329)
> org.apache.jasper.servlet.JspServlet.service(JspServlet.java:265)
> javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
> sun.reflect.GeneratedMethodAccessor48.invoke(Unknown Source)
>
> sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
> java.lang.reflect.Method.invoke(Method.java:597)
> org.apache.catalina.security.SecurityUtil$1.run(SecurityUtil.java:244)
> java.security.AccessController.doPrivileged(Native Method)
> javax.security.auth.Subject.doAsPrivileged(Subject.java:517)
> org.apache.catalina.security.SecurityUtil.execute(SecurityUtil.java:276)
>
> org.apache.catalina.security.SecurityUtil.doAsPrivilege(SecurityUtil.java:162)
>
> *root cause*
>
> javax.servlet.ServletException: org/apache/nutch/analysis/CommonGrams
>
> org.apache.jasper.runtime.PageContextImpl.doHandlePageException(PageContextImpl.java:841)
>
> org.apache.jasper.runtime.PageContextImpl.access$11(PageContextImpl.java:779)
> org.apache.jasper.runtime.PageContextImpl$12.run(PageContextImpl.java:761)
> java.security.AccessController.doPrivileged(Native Method)
>
> org.apache.jasper.runtime.PageContextImpl.handlePageException(PageContextImpl.java:759)
> org.apache.jsp.search_jsp._jspService(search_jsp.java:777)
> org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:98)
> javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
>
> org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:331)
> org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:329)
> org.apache.jasper.servlet.JspServlet.service(JspServlet.java:265)
> javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
> sun.reflect.GeneratedMethodAccessor48.invoke(Unknown Source)
>
> sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
> java.lang.reflect.Method.invoke(Method.java:597)
> org.apache.catalina.security.SecurityUtil$1.run(SecurityUtil.java:244)
> java.security.AccessController.doPrivileged(Native Method)
> javax.security.auth.Subject.doAsPrivileged(Subject.java:517)
> org.apache.catalina.security.SecurityUtil.execute(SecurityUtil.java:276)
>
> org.apache.catalina.security.SecurityUtil.doAsPrivilege(SecurityUtil.java:162)
>
> *root cause*
>
> java.lang.NoClassDefFoundError: org/apache/nutch/analysis/CommonGrams
>
> org.apache.nutch.searcher.FieldQueryFilter.setConf(FieldQueryFilter.java:108)
>
> org.apache.nutch.searcher.url.URLQueryFilter.setConf(URLQueryFilter.java:34)
> org.apache.nutch.plugin.Extension.getExtensionInstance(Extension.java:162)
> org.apache.nutch.searcher.QueryFilters.(QueryFilters.java:76)
> org.apache.nutch.searcher.IndexSearcher.init(IndexSearcher.java:79)
> org.apache.nutch.searcher.IndexSearcher.(IndexSearcher.java:63)
> org.apache.nutch.searcher.NutchBean.init(NutchBean.java:140)
> org.apache.nutch.searcher.NutchBean.(NutchBean.java:106)
> org.apache.nutch.searcher.NutchBean.(NutchBean.java:84)
> org.apache.nutch.searcher.NutchBean.get(NutchBean.java:71)
> org.apache.jsp.search_jsp._jspService(search_jsp.java:106)
> org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:98)
> javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
>
> org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:331)
> org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:329)
> org.apache.jasper.servlet.JspServlet.service(JspServlet.java:265)
> javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
> sun.reflect.GeneratedMethodAccessor48.invoke(Unknown Source)
>
> sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
> java.lang.reflect.Method.invoke(Method.java:597)
> org.apache.catalina.security.SecurityUtil$1.run(SecurityUtil.java:244)
> java.security.AccessController.doPrivileged(Native Method)
> javax.security.auth.Subject.doAsPrivileged(Subject.java:517)
> org.apache.catalina.security.SecurityUtil.execute(SecurityUtil.java:276)
>
> org.apache.catalina.security.SecurityUtil.doAsPrivilege(SecurityUtil.java:162)
>
> Could this be a classpath problem? My setup may be a little peculiar. My
> site information is located at:
>
> /usr/share/tomcat5.5-webapps/site_name
>
> But I've appropriately specified that as the docBase at:
>
> /usr/share/tomcat5.5/conf/Catalina/localhost/site_name.xml
>
> so that shouldn't be a problem.
>
> Inside
>
> /usr/share/tomcat5.5-webapps/site_name
>
> I've just unpacked nutch-0.9.war, which I got from the tarball at the Nutch
> site. The only modifications I've made there are related to doctype issues
> because a few of the xml files were apparently incompatible with Java 6.
> That should be irrelevant to the current problem.
>
> So I guess the question is where is Nutch expecting to find
> CommonGrams.class?
>
> Best,
> John
