[jboss-user] [JBoss Seam] - Re: Restrict

[tony.herstell@gmail.com]

  | package nz.co.risingstars.content;
  | 
  | import java.io.ByteArrayOutputStream;
  | import java.io.IOException;
  | import java.io.InputStream;
  | 
  | import javax.servlet.ServletException;
  | import javax.servlet.http.HttpServlet;
  | import javax.servlet.http.HttpServletRequest;
  | import javax.servlet.http.HttpServletResponse;
  | 
  | import nz.co.risingstars.entities.Image;
  | 
  | import org.jboss.seam.Component;
  | 
  | /**
  |  * Serves images and other member content
  |  * 
  |  * @author Shane Bryzak
  |  */
  | public class ContentServlet extends HttpServlet {
  | 
  | 	private static final String IMAGES_PATH = "/images";
  | 
  | 	private byte[] noImage;
  | 
  | 	public ContentServlet() {
  | 		InputStream noImageFromStorage = getClass().getResourceAsStream("/images/no_image.png");
  | 		if (noImageFromStorage != null) {
  | 			ByteArrayOutputStream out = new ByteArrayOutputStream();
  | 			byte[] buffer = new byte[512];
  | 			try {
  | 				int read = noImageFromStorage.read(buffer);
  | 				while (read != -1) {
  | 					out.write(buffer, 0, read);
  | 					read = noImageFromStorage.read(buffer);
  | 				}
  | 
  | 				noImage = out.toByteArray();
  | 			} catch (IOException e) {
  | 			}
  | 		}
  | 	}
  | 
  | 	@Override
  | 	protected void doGet(HttpServletRequest request,
  | 			HttpServletResponse response) throws ServletException, IOException {
  | 
  | 		if (IMAGES_PATH.equals(request.getPathInfo())) {
  | 			ContentController contentController = (ContentController) Component
  | 					.getInstance(ContentControllerImpl.class);
  | 
  | 			String id = request.getParameter("id");
  | 			Image imageToFetch = null;
  | 			if (id != null && !"".equals(id)) {
  | 				imageToFetch = contentController.getImage(Long.parseLong(id));
  | 			}
  | 
  | 			String contentType = null;
  | 			byte[] data = null;
  | 
  | 			if (imageToFetch != null && imageToFetch.getThumbnail() != null && imageToFetch.getThumbnail().length > 0) {
  | 				contentType = imageToFetch.getType();
  | 				data = imageToFetch.getThumbnail();
  | 			} else if (noImage != null) {
  | 				contentType = "image/png";
  | 				data = noImage;
  | 			}
  | 
  | 			if (data != null) {
  | 				response.setContentType(contentType);
  | 			}
  | 			response.getOutputStream().write(data);
  | 			response.getOutputStream().flush();
  | 		}
  | 	}
  | }
  | 
  | 
  | package nz.co.risingstars.content;
  | 
  | import nz.co.risingstars.entities.Image;
  | 
  | public interface ContentController
  | {
  |   Image getImage(long imageId);
  | }
  | 
  | 
  | package nz.co.risingstars.content;
  | 
  | import javax.ejb.Stateless;
  | import javax.persistence.EntityManager;
  | import javax.persistence.PersistenceContext;
  | 
  | import nz.co.risingstars.entities.Image;
  | 
  | import org.jboss.seam.annotations.Name;
  | 
  | @Stateless
  | @Name("contentController")
  | public class ContentControllerImpl implements ContentController {
  | 
  | 	@PersistenceContext
  | 	private EntityManager em;
  | 
  | 	public Image getImage(long imageId) {
  | 		Image img = em.find(Image.class, imageId);
  | 
  | 		// if (img == null || !Identity.instance().hasPermission("memberImage", "view", img))
  | 		// return null;
  | 		// else
  | 		return img;
  | 	}
  | }
  | 
  | 
  | 
  | 
  | 
  | 
  | 

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