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this is my code to print data in html from servlet
when running it is not showing data
Java
package finalpackage;

import java.io.File;
import java.io.IOException;
import java.io.PrintWriter;
import java.util.ArrayList;
import java.util.List;

import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import com.hp.hpl.jena.query.QueryExecution;
import com.hp.hpl.jena.query.QueryExecutionFactory;
import com.hp.hpl.jena.query.QueryFactory;
import com.hp.hpl.jena.query.QuerySolution;
import com.hp.hpl.jena.query.ResultSetFormatter;
import com.hp.hpl.jena.rdf.model.Model;
import com.hp.hpl.jena.rdf.model.ModelFactory;
import com.hp.hpl.jena.util.FileManager;

/**
 * Servlet implementation class tablet
 */
@WebServlet("/tablet")
public class tablet extends HttpServlet {
	private static final long serialVersionUID = 1L;
	public static final String MY_FOAF_FILE = "//home/ubuntu/indoor.rdf";
       
    /**
     * @see HttpServlet#HttpServlet()
     */
    public tablet() {
        super();
        // TODO Auto-generated constructor stub
    }

	/**
	 * @see HttpServlet#doGet(HttpServletRequest request, HttpServletResponse response)
	 */
	protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
		// TODO Auto-generated method stub
		doPost(request, response);
	}

	/**
	 * @see HttpServlet#doPost(HttpServletRequest request, HttpServletResponse response)
	 */
	protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
		// TODO Auto-generated method stub
		
		Model model = ModelFactory.createDefaultModel();			

		
	    FileManager.get().readModel(model,MY_FOAF_FILE);
	    model.read(new File(MY_FOAF_FILE).toURI().toString());
	    String queryString =  "SELECT ?predicate ?object   WHERE {?subject ?predicate ?object .}";  
		
	    com.hp.hpl.jena.query.Query query = QueryFactory.create(queryString);
	     QueryExecution qe = QueryExecutionFactory.create(query, model);

	     	com.hp.hpl.jena.query.ResultSet results = qe.execSelect();
	     	
			 ResultSetFormatter.out(System.out, results);
	

		      PrintWriter out  = response.getWriter();
				 out.println("<html><body>");
				
				 while ( results.hasNext()) {
					 QuerySolution binding = results.nextSolution();
					  out.println("<p>"+binding.get("object").toString() +"</p>");
				 }
				 
				 out.println("</body>") ;
			        out.println("</html>") ;
			        out.close() ;

	}

}
Posted
Updated 30-Mar-13 9:45am
v2
Comments
Member 3369145 30-Mar-13 8:29am    
and here is web.xml details


<web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://java.sun.com/xml/ns/javaee" xmlns:web="http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd" xsi:schemalocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_3_0.xsd" version="3.0">
<display-name>finalproject
<servlet>
<servlet-name>tablet
<servlet-class>finalpackage.tablet

<servlet-mapping>
<servlet-name>tablet
<url-pattern>/tablet

<welcome-file-list>
<welcome-file>index.jsp

Prasad Khandekar 30-Mar-13 15:51pm    
Please have a look at (http://www.codeproject.com/Answers/569785/notplusshowingplusdataplusfromplusservletplustoplu#answer1)

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