Entendi.
Todos os exemplos que vi até agora só mostram com uma iamgem de cada vez, utilizando o seu id. Consegui mostrar uma imagem, seguindo o exemplo que voce deu (Servlet), mas não consegui usando o action do struts, agora estou querendo saber como vou mostrar todas as imagens que estao no BD, de qualquer forma, muito obrigado pela ajuda até agora.
Meu Servlet ficou assim:
package catalogo.util;
import catalogo.dao.FotoDAO;
import catalogo.modelo.Foto;
import java.io.IOException;
import java.io.PrintWriter;
import javax.servlet.ServletException;
import javax.servlet.ServletOutputStream;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import org.hibernate.Session;
public class ExibirImagem extends HttpServlet {
@Override
protected void service(HttpServletRequest req, HttpServletResponse resp)
throws ServletException, IOException {
resp.setHeader("Expires", "Sat, 1 Jan 1990 12:00:00 GMT");
resp.setHeader("Cache-Control", "no-store, no-cache, must-revalidate");
resp.addHeader("Cache-Control", "post-check=0, pre-check=0");
resp.setHeader("Pragma", "no-cache");
try
{
Session session = HibernateUtil.getSession();
FotoDAO fotoDao = new FotoDAO(session, Foto.class);
Foto foto = fotoDao.carregarFotoPeloId(2);
byte[] buffer = foto.getDados();
ServletOutputStream output = resp.getOutputStream();
output.write(buffer);
output.flush();
output.close();
}
catch (Exception e)
{
throw new ServletException(e);
}
}
/**
* Processes requests for both HTTP <code>GET</code> and <code>POST</code> methods.
* @param request servlet request
* @param response servlet response
* @throws ServletException if a servlet-specific error occurs
* @throws IOException if an I/O error occurs
*/
protected void processRequest(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
response.setContentType("text/html;charset=UTF-8");
PrintWriter out = response.getWriter();
try {
/* TODO output your page here
out.println("<html>");
out.println("<head>");
out.println("<title>Servlet ExibirImagem</title>");
out.println("</head>");
out.println("<body>");
out.println("<h1>Servlet ExibirImagem at " + request.getContextPath () + "</h1>");
out.println("</body>");
out.println("</html>");
*/
} finally {
out.close();
}
}
// <editor-fold defaultstate="collapsed" desc="HttpServlet methods. Click on the + sign on the left to edit the code.">
/**
* Handles the HTTP <code>GET</code> method.
* @param request servlet request
* @param response servlet response
* @throws ServletException if a servlet-specific error occurs
* @throws IOException if an I/O error occurs
*/
@Override
protected void doGet(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
processRequest(request, response);
}
/**
* Handles the HTTP <code>POST</code> method.
* @param request servlet request
* @param response servlet response
* @throws ServletException if a servlet-specific error occurs
* @throws IOException if an I/O error occurs
*/
@Override
protected void doPost(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
processRequest(request, response);
}
/**
* Returns a short description of the servlet.
* @return a String containing servlet description
*/
@Override
public String getServletInfo() {
return "Short description";
}// </editor-fold>
}
A minha action do struts ficou assim:
package catalogo.controle.actions;
import catalogo.dao.FotoDAO;
import catalogo.modelo.Foto;
import catalogo.util.HibernateUtil;
import javax.servlet.ServletOutputStream;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import org.apache.struts.action.ActionForm;
import org.apache.struts.action.ActionForward;
import org.apache.struts.action.ActionMapping;
import org.hibernate.Session;
public class TesteAction extends org.apache.struts.action.Action {
/**
* This is the action called from the Struts framework.
* @param mapping The ActionMapping used to select this instance.
* @param form The optional ActionForm bean for this request.
* @param request The HTTP Request we are processing.
* @param response The HTTP Response we are processing.
* @throws java.lang.Exception
* @return
*/
@Override
public ActionForward execute(ActionMapping mapping, ActionForm form,
HttpServletRequest request, HttpServletResponse response)
throws Exception {
response.setHeader("Expires", "Sat, 1 Jan 1990 12:00:00 GMT");
response.setHeader("Cache-Control", "no-store, no-cache, must-revalidate");
response.addHeader("Cache-Control", "post-check=0, pre-check=0");
response.setHeader("Pragma", "no-cache");
try
{
Session session = HibernateUtil.getSession();
FotoDAO fotoDao = new FotoDAO(session, Foto.class);
Foto foto = fotoDao.carregarFotoPeloId(2);
byte[] buffer = foto.getDados();
ServletOutputStream output = response.getOutputStream();
output.write(buffer);
output.flush();
output.close();
}
catch (Exception e)
{
e.getMessage();
}
return mapping.findForward("teste");
}
}
Se alguem souber pelo menos como posso fazer para mostrar a imagem usando o struts, ao invez de servle, ja agradeço.
