Package com.vaadin.server

Examples of com.vaadin.server.DownloadStream

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            ImageIO.write(image, "png", imagebuffer);

            // Return a stream from the buffer.
            ByteArrayInputStream istream = new ByteArrayInputStream(
                    imagebuffer.toByteArray());
            DownloadStream downloadStream = new DownloadStream(istream,
                    "image/png", "generatedFile.png");

            if (relativeUri.startsWith("myresource_download")) {
                downloadStream.setParameter("Content-Disposition",
                        "attachment; filename=\"downloadedPNG.png\"");
            }
            downloadStream.writeResponse(request, response);
            return true;
        } catch (IOException e) {
            return false;
        }
    }
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            ImageIO.write(image, "png", imagebuffer);

            // Return a stream from the buffer.
            ByteArrayInputStream istream = new ByteArrayInputStream(
                    imagebuffer.toByteArray());
            new DownloadStream(istream, null, null).writeResponse(request,
                    response);
            return true;
        } catch (IOException e) {
            return false;
        }
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        Matcher matcher = Pattern.compile("(\\d+)(/.*)?").matcher(path);
        if (!matcher.matches()) {
            return super.handleConnectorRequest(request, response, path);
        }

        DownloadStream stream;

        VaadinSession session = getSession();
        session.lock();
        try {
            List<URLReference> sources = getState().sources;

            int sourceIndex = Integer.parseInt(matcher.group(1));

            if (sourceIndex < 0 || sourceIndex >= sources.size()) {
                getLogger().log(Level.WARNING,
                        "Requested source index {0} is out of bounds",
                        sourceIndex);
                return false;
            }

            URLReference reference = sources.get(sourceIndex);
            ConnectorResource resource = (ConnectorResource) ResourceReference
                    .getResource(reference);
            stream = resource.getStream();
        } finally {
            session.unlock();
        }

        stream.writeResponse(request, response);
        return true;
    }
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        Matcher matcher = Pattern.compile("(\\d+)(/.*)?").matcher(path);
        if (!matcher.matches()) {
            return super.handleConnectorRequest(request, response, path);
        }

        DownloadStream stream;

        VaadinSession session = getSession();
        session.lock();
        try {
            List<URLReference> sources = getState().sources;

            int sourceIndex = Integer.parseInt(matcher.group(1));

            if (sourceIndex < 0 || sourceIndex >= sources.size()) {
                getLogger().log(Level.WARNING,
                        "Requested source index {0} is out of bounds",
                        sourceIndex);
                return false;
            }

            URLReference reference = sources.get(sourceIndex);
            ConnectorResource resource = (ConnectorResource) ResourceReference
                    .getResource(reference);
            stream = resource.getStream();
        } finally {
            session.unlock();
        }

        stream.writeResponse(request, response);
        return true;
    }
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Related Classes of com.vaadin.server.DownloadStream

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  • com.vaadin.tests.tickets.Ticket2292
  • com.vaadin.ui.AbstractMedia
  • java.io.InputStream
  • java.io.OutputStream
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