Galera estou com uma duvida cruel estou usando um servlet para fazer a contrução de um relatorio jarperReport tenho um botão na pagina com dois label para passar as data de inicio e fim do periodo ate ai blz, mais como eu faço para acessar o servlet a partir da pagina tentei pesquisar na net mais obtenho sempre que tenho q fazer um bean para o servlet mais como fazer isso? segue abaixo meu servlet:
/*
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*/
package br.pmjp.sisgec.servlets;
import br.pmjp.sisgec.model.fachada.Facade;
import java.io.IOException;
import java.io.InputStream;
import java.io.PrintWriter;
import java.io.StringWriter;
import java.sql.SQLException;
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;
/**
*
* @author Igor
*/
public class RelatorioEscolaServlet extends HttpServlet {
public static final long serialVersionUID = 1L;
public RelatorioEscolaServlet() {
super();
}
protected void processRequest(HttpServletRequest req, HttpServletResponse resp)
throws ServletException, IOException, SQLException, ClassNotFoundException {
try {
PrintWriter out = resp.getWriter();
Facade facade = Facade.getInstance();
ServletOutputStream servletOutPutStream = resp.getOutputStream();
String caminho = getServletContext().getRealPath("") + "/WEB-INF/relatorios/relatorio_escola.pdf";
out.print(caminho);
String dataInicio = req.getParameter("dataInicio");
String dataFim = req.getParameter("dataFim");
InputStream reportStream = getServletConfig().getServletContext().getResourceAsStream(caminho);
HashMap parametrosRelatorio = new HashMap();
parametrosRelatorio.put("dataInicio", dataInicio);
parametrosRelatorio.put("dataFim", dataFim);
JasperRunManager.runReportToPdfStream(reportStream, servletOutPutStream, parametrosRelatorio, facade.conectar());
resp.setContentType("application/pdf");
servletOutPutStream.flush();
servletOutPutStream.close();
resp.sendRedirect("listEscola.xhtml");
} catch (JRException e) {
StringWriter stringWriter = new StringWriter();
PrintWriter printWriter = new PrintWriter(stringWriter);
e.printStackTrace();
resp.setContentType("text/plain");
resp.getOutputStream().print(stringWriter.toString());
}catch(Exception e){
e.printStackTrace();
}
}
protected void doGet(HttpServletRequest req, HttpServletResponse resp)throws ServletException, IOException {
try {
processRequest(req,resp);
} catch (Exception e) {
e.printStackTrace();
}
}
protected void doPost(HttpServletRequest req, HttpServletResponse resp)throws ServletException, IOException {
try {
processRequest(req,resp);
} catch (Exception e) {
e.printStackTrace();
}
}
}
