Hello List, I am currently using Apache Nutch 1.2 and Tomcat 6.0.26 (first post on list). I recently configured use of a plugin within Nutch which has been known to cause the above error due to the fact that Tomcat and Jena (a framework for building semantic web apps) are using conflicting versions of xerces library. I understand that previously I could replace the parser to match in $CATALINA_HOME/common/lib, however I learned when running on JSE 5 the class loader delegation process will default to the implementation inside the JDK. I have therefore ended up reading about the endorsed standards override mechanism but have strayed slightly and now think it is best to seek help! The Jena jar packaged with the Nutch plugin was released in 2004 so I am aware that I would probably need to 'downgrade' the Tomcat xerces parser library for testing purposes. I attach part of the exception report to give an idea of the problem. Any suggestions would be appreciated. Thank you
Lewis exception org.apache.jasper.JasperException: javax.servlet.ServletException: java.lang.NoClassDefFoundError: org/apache/xerces/util/XMLChar org.apache.jasper.servlet.JspServletWrapper.handleJspException(JspServletWrapper.java:491) org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:401) org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:313) org.apache.jasper.servlet.JspServlet.service(JspServlet.java:260) javax.servlet.http.HttpServlet.service(HttpServlet.java:717) root cause javax.servlet.ServletException: java.lang.NoClassDefFoundError: org/apache/xerces/util/XMLChar org.apache.jasper.runtime.PageContextImpl.doHandlePageException(PageContextImpl.java:862) org.apache.jasper.runtime.PageContextImpl.handlePageException(PageContextImpl.java:791) org.apache.jsp.search_jsp._jspService(search_jsp.java:886) org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:70) javax.servlet.http.HttpServlet.service(HttpServlet.java:717) org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:377) org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:313) org.apache.jasper.servlet.JspServlet.service(JspServlet.java:260) javax.servlet.http.HttpServlet.service(HttpServlet.java:717) Glasgow Caledonian University is a registered Scottish charity, number SC021474 Winner: Times Higher Education's Widening Participation Initiative of the Year 2009 and Herald Society's Education Initiative of the Year 2009 http://www.gcu.ac.uk/newsevents/news/bycategory/theuniversity/1/name,6219,en.html --------------------------------------------------------------------- To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org