Jsp X relatório

Front-end
#1

olá pessoal
tenho um projeto web em jsp
e criei um relatorio no ireport para teste, sem select
na mesma pasta “servlet” do meu projeto tenho o arquivo executa.java e o Zonas.jasper
na hora de executar dá a mensagem que nao encontra o arquivo

caminho null
java.lang.NullPointerException
fim

segue abaixo meu arquivo executa.java

package Servelts;

import java.io.IOException;
import java.io.InputStream;
import java.sql.Connection;
import java.util.HashMap;
import javax.servlet.ServletException;
import javax.servlet.ServletOutputStream;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import net.sf.jasperreports.engine.JRException;
import net.sf.jasperreports.engine.JasperRunManager;
import Classes.Conectar;

public class Executa extends HttpServlet {
       
    public Executa() {
        super();
    }

	protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
	}

	protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
	
		ServletOutputStream servletOutputStream = response.getOutputStream();
		String relatorio = "Zonas.jasper" ;
		InputStream reportStream = getServletConfig().getServletContext().getResourceAsStream(relatorio);
		System.out.println("caminho " + reportStream );

		try {
			Conectar conectar = new Conectar();
			Connection c = conectar.getConnection();
			HashMap parametros = new HashMap();
			JasperRunManager.runReportToPdfStream(reportStream, servletOutputStream, parametros, c);
			response.setContentType("application/pdf");
			System.out.println("deu" );
			servletOutputStream.flush();
			servletOutputStream.close();
			if (c != null) c.close();
		} catch (JRException e) {
			System.out.println( e );
			//e.printStackTrace();
		} catch (Exception e) {
			System.out.println( e );
			//e.printStackTrace();
		}
		
		System.out.println("fim" );

		
	}

}
#2

fazendo algumas alterações agora aparece o seguinte erro

java.io.FileNotFoundException: C:\Program%20Files\Eclipse\workspace.metadata.plugins\org.eclipse.wst.server.core\tmp0\wtpwebapps\SSE\WEB-INF\classes\Relatorios\Zonas.jasper (O sistema não pode encontrar o caminho especificado)
java.io.FileInputStream.open(Native Method)

		ServletOutputStream sOutputStream = response.getOutputStream();  
        String caminho = "/Relatorios/";  
        String relatorio = caminho + "Zonas.jasper";  
        java.net.URL resource = this.getClass().getClassLoader().getResource(relatorio);  
        InputStream reportStream = new FileInputStream(resource.getFile());  
  
        try {  
            HashMap<String, String> parametros = new HashMap<String, String>();  
            //parametros.put("nome", "Joaquim");  
            JasperRunManager.runReportToPdfStream(reportStream, sOutputStream, parametros);  
            response.setContentType("application/pdf");  
            sOutputStream.flush();  
            sOutputStream.close(); 
            System.out.println("pdf gerado");
        } catch (JRException e){  
            StringWriter sWriter = new StringWriter();  
            PrintWriter pWriter = new PrintWriter(sWriter);  
            e.printStackTrace(pWriter);  
            response.setContentType("text/plain");  
            response.getOutputStream().print(sWriter.toString());
            System.out.println("txt gerado");
        }
#3

e tentando de outra maneira volta o erro null

java.lang.NullPointerException
at net.sf.jasperreports.engine.fill.JRFiller.fillReport(JRFiller.java:89)
at net.sf.jasperreports.engine.JasperFillManager.fillReport(JasperFillManager.java:601)
at net.sf.jasperreports.engine.JasperFillManager.fillReport(JasperFillManager.java:517)
at Servelts.Executa.doPost(Executa.java:182)

		String fileName = "C:\\Program Files\\Eclipse\\workspace\\SSE\\src\\Servelts\\Zonas.jasper";
		String outFileName = "C:\\Program Files\\Eclipse\\workspace\\SSE\\src\\Servelts\\Zonas.pdf";
		HashMap hm = new HashMap();
		try {
			JasperPrint print = JasperFillManager.fillReport(fileName,hm,new JREmptyDataSource());
			JRExporter exporter = new net.sf.jasperreports.engine.export.JRPdfExporter();
			exporter.setParameter(JRExporterParameter.OUTPUT_FILE_NAME,outFileName);
			exporter.setParameter(JRExporterParameter.JASPER_PRINT,print);
			exporter.exportReport();
			System.out.println("Created file: " + outFileName);
		} catch (JRException e) {
			e.printStackTrace();
		} catch (Exception e) {
			e.printStackTrace();
		}
#4

Nada pessoal ?

#5