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Asked: 2026-05-25T12:32:55+00:00

I tried running this jsp program in tomcat5.5 in netbeans 6.1 <%@ page import=java.io.*

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I tried running this jsp program in tomcat5.5 in netbeans 6.1

<%@ page import="java.io.*" %>
<%@ page import="java.util.*" session="true"%>
<%@ page import="com.hp.hpl.jena.rdf.model.*"%>
<%@ page import="com.hp.hpl.jena.query.*"%>

<%
         try
          {
             String inputFile="C:\\Users\\Admin\\Documents\\NetBeansProjects\\finalview\\resumenew.rdf";

         InputStream in = new BufferedInputStream(new FileInputStream(new File(inputFile)));

         Model model = ModelFactory.createMemModelMaker().createModel("");
         model.read(in,null) ;

          String queryString =
                                  "PREFIX rdf: <http://www.w3.org/1999/02/22-rdf-syntax-ns#> " +
                                  "PREFIX foaf: <http://www.xmlns.com/foaf/0.1> " +

                                    "SELECT ?name  ?phone WHERE { ?person foaf:name ?name . ?person foaf:phone ?phone }";



                       Query query1 = QueryFactory.create(queryString);
                       QueryExecution qe = QueryExecutionFactory.create(query1,model);
                       ResultSet results = qe.execSelect();
                       ResultSetFormatter.out(System.out, results, query1);
                       qe.close();
                       }catch(Exception e){}
%>

And I get the following exception when I run the program

exception

org.apache.jasper.JasperException: Unable to compile class for JSP

An error occurred at line: 6 in the jsp file: /test.jsp
Generated servlet error:
Model cannot be resolved to a type

An error occurred at line: 6 in the jsp file: /test.jsp
Generated servlet error:
ModelFactory cannot be resolved

An error occurred at line: 6 in the jsp file: /test.jsp
Generated servlet error:
Query cannot be resolved to a type

An error occurred at line: 6 in the jsp file: /test.jsp
Generated servlet error:
QueryFactory cannot be resolved

An error occurred at line: 6 in the jsp file: /test.jsp
Generated servlet error:
QueryExecution cannot be resolved to a type

An error occurred at line: 6 in the jsp file: /test.jsp
Generated servlet error:
QueryExecutionFactory cannot be resolved

An error occurred at line: 6 in the jsp file: /test.jsp
Generated servlet error:
ResultSet cannot be resolved to a type

An error occurred at line: 6 in the jsp file: /test.jsp
Generated servlet error:
ResultSetFormatter cannot be resolved


    org.apache.jasper.servlet.JspServletWrapper.handleJspException(JspServletWrapper.java:510)
    org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:375)
    org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:314)
    org.apache.jasper.servlet.JspServlet.service(JspServlet.java:264)
    javax.servlet.http.HttpServlet.service(HttpServlet.java:802)c

Can you tell me, where should I keep my jsp program and the file that is given as input to it.

How can I avoid this error ?

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1 Answer

  1. Editorial Team

    Your Jena libraries (and its dependencies) should be under WEB-INF/lib (case sensitive), the standard Java EE folder to put your application jar files. Make sure that your clases (Query, QueryFactory, ModelFactory, etc):

    1. Exist in any of the jar files you put under WEB-INF/lib.
    2. Belong to com.hp.hpl.jena.rdf.model.* or com.hp.hpl.jena.query.*

    Try with this application structure:

    tomcat/webapps/ROOT
 - test.jsp
 - WEB-INF
    - lib
        - your .jar files

    By the way, your “Model 1 code” seems to be a good candidate to be moved to a servlet (Model 2), but that is only a design advice that has nothing to do with your JSP compiler error.

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