Example usage for javax.servlet.http HttpServletResponse flushBuffer

List of usage examples for javax.servlet.http HttpServletResponse flushBuffer

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Introduction

In this page you can find the example usage for javax.servlet.http HttpServletResponse flushBuffer.

Prototype

public void flushBuffer() throws IOException;

Source Link

Document

Forces any content in the buffer to be written to the client.

Usage

From source file:fr.gael.dhus.api.UploadController.java

@SuppressWarnings("unchecked")
@PreAuthorize("hasRole('ROLE_UPLOAD')")
@RequestMapping(value = "/upload", method = { RequestMethod.POST })
public void upload(Principal principal, HttpServletRequest req, HttpServletResponse res) throws IOException {
    // process only multipart requests
    if (ServletFileUpload.isMultipartContent(req)) {
        User user = (User) ((UsernamePasswordAuthenticationToken) principal).getPrincipal();
        // Create a factory for disk-based file items
        FileItemFactory factory = new DiskFileItemFactory();
        // Create a new file upload handler
        ServletFileUpload upload = new ServletFileUpload(factory);

        // Parse the request
        try {//from w  w  w.j a va2  s .c  om
            ArrayList<Long> collectionIds = new ArrayList<>();
            FileItem product = null;

            List<FileItem> items = upload.parseRequest(req);
            for (FileItem item : items) {
                if (COLLECTIONSKEY.equals(item.getFieldName())) {
                    if (item.getString() != null && !item.getString().isEmpty()) {
                        for (String cid : item.getString().split(",")) {
                            collectionIds.add(new Long(cid));
                        }
                    }
                } else if (PRODUCTKEY.equals(item.getFieldName())) {
                    product = item;
                }
            }
            if (product == null) {
                res.sendError(HttpServletResponse.SC_BAD_REQUEST,
                        "Your request is missing a product file to upload.");
                return;
            }
            productUploadService.upload(user.getId(), product, collectionIds);
            res.setStatus(HttpServletResponse.SC_CREATED);
            res.getWriter().print("The file was created successfully.");
            res.flushBuffer();
        } catch (FileUploadException e) {
            logger.error("An error occurred while parsing request.", e);
            res.sendError(HttpServletResponse.SC_INTERNAL_SERVER_ERROR,
                    "An error occurred while parsing request : " + e.getMessage());
        } catch (UserNotExistingException e) {
            logger.error("You need to be connected to upload a product.", e);
            res.sendError(HttpServletResponse.SC_UNAUTHORIZED, "You need to be connected to upload a product.");
        } catch (UploadingException e) {
            logger.error("An error occurred while uploading the product.", e);
            res.sendError(HttpServletResponse.SC_INTERNAL_SERVER_ERROR,
                    "An error occurred while uploading the product : " + e.getMessage());
        } catch (RootNotModifiableException e) {
            logger.error("An error occurred while uploading the product.", e);
            res.sendError(HttpServletResponse.SC_INTERNAL_SERVER_ERROR,
                    "An error occurred while uploading the product : " + e.getMessage());
        } catch (ProductNotAddedException e) {
            logger.error("Your product can not be read by the system.", e);
            res.sendError(HttpServletResponse.SC_NOT_ACCEPTABLE, "Your product can not be read by the system.");
        }
    } else {
        res.sendError(HttpServletResponse.SC_UNSUPPORTED_MEDIA_TYPE,
                "Request contents type is not supported by the servlet.");
    }
}

From source file:architecture.ee.web.spring.controller.DownloadController.java

@RequestMapping(value = "/image/{imageId}/{filename:.+}", method = RequestMethod.GET)
@ResponseBody/*  www .jav a2 s . c om*/
public void handleImage(@PathVariable("imageId") Long imageId, @PathVariable("filename") String filename,
        @RequestParam(value = "width", defaultValue = "0", required = false) Integer width,
        @RequestParam(value = "height", defaultValue = "0", required = false) Integer height,
        HttpServletResponse response) throws IOException {

    log.debug(" ------------------------------------------");
    log.debug("imageId:" + imageId);
    log.debug("width:" + width);
    log.debug("height:" + height);
    log.debug("------------------------------------------");
    try {
        if (imageId > 0 && StringUtils.isNotEmpty(filename)) {
            Image image = imageManager.getImage(imageId);
            User user = SecurityHelper.getUser();
            if (hasPermissions(image, user) && StringUtils.equals(filename, image.getName())) {
                InputStream input;
                String contentType;
                int contentLength;
                if (width > 0 && width > 0) {
                    input = imageManager.getImageThumbnailInputStream(image, width, height);
                    contentType = image.getThumbnailContentType();
                    contentLength = image.getThumbnailSize();
                } else {
                    input = imageManager.getImageInputStream(image);
                    contentType = image.getContentType();
                    contentLength = image.getSize();
                }
                response.setContentType(contentType);
                response.setContentLength(contentLength);
                IOUtils.copy(input, response.getOutputStream());
                response.flushBuffer();
            } else {
                throw new NotFoundException();
            }
        } else {
            throw new NotFoundException();
        }
    } catch (NotFoundException e) {
        response.sendError(404);
    }
}

From source file:com.ibm.sbt.service.basic.ProxyService.java

protected void serviceProxy(HttpServletRequest request, HttpServletResponse response)
        throws ServletException, IOException {
    this.debugHook = (DebugProxyHook) DebugServiceHookFactory.get().get(Type.PROXY, request, response);
    if (debugHook != null) {
        request = debugHook.getRequestWrapper();
        response = debugHook.getResponseWrapper();
    }//  ww w . j a  va  2s .c o  m
    try {
        try {
            initProxy(request, response);
            try {
                checkRequestAllowed(request);
                String smethod = request.getMethod();
                DefaultHttpClient client = getClient(request, getSocketReadTimeout());
                URI url = getRequestURI(request);
                HttpRequestBase method = createMethod(smethod, url, request);
                if (prepareForwardingMethod(method, request, client)) {
                    HttpResponse clientResponse = executeMethod(client, method);
                    prepareResponse(method, request, response, clientResponse, true);
                }
                response.flushBuffer();
            } catch (Exception e) {
                writeErrorResponse("Unexpected Exception", new String[] { "exception" },
                        new String[] { e.toString() }, response, request);
            } finally {
                termProxy(request, response);
            }
        } catch (Exception e) {
            writeErrorResponse("Unexpected Exception", new String[] { "exception" },
                    new String[] { e.toString() }, response, request);
        }
    } finally {
        if (debugHook != null) {
            debugHook.terminate();
            debugHook = null;
        }
    }
}

From source file:net.sourceforge.fenixedu.presentationTier.Action.student.onlineTests.StudentTestsAction.java

public ActionForward exportChecksum(ActionMapping mapping, ActionForm form, HttpServletRequest request,
        HttpServletResponse response) throws Exception {
    final String logId = request.getParameter("logId");
    final User userView = getUserView(request);
    if (logId != null && logId.length() != 0) {
        StudentTestLog studentTestLog = FenixFramework.getDomainObject(logId);
        if (studentTestLog.getStudent().getPerson().equals(userView.getPerson())) {
            List<StudentTestLog> studentTestLogs = new ArrayList<StudentTestLog>();
            studentTestLogs.add(studentTestLog);
            byte[] data = ReportsUtils.exportToPdfFileAsByteArray(
                    "net.sourceforge.fenixedu.domain.onlineTests.StudentTestLog.checksumReport", null,
                    studentTestLogs);/*from  w w w  .ja  va 2  s.  c o  m*/
            response.setContentType("application/pdf");
            response.addHeader("Content-Disposition",
                    "attachment; filename=" + studentTestLog.getStudent().getNumber() + ".pdf");
            response.setContentLength(data.length);
            ServletOutputStream writer = response.getOutputStream();
            writer.write(data);
            writer.flush();
            writer.close();
            response.flushBuffer();
            return mapping.findForward("");
        }
    }
    return null;
}

From source file:org.nuxeo.ecm.platform.picture.web.PictureBookManagerBean.java

protected String createZip(List<DocumentModel> documents) throws IOException {

    FacesContext context = FacesContext.getCurrentInstance();
    HttpServletResponse response = (HttpServletResponse) context.getExternalContext().getResponse();

    BufferedOutputStream buff = new BufferedOutputStream(response.getOutputStream());
    ZipOutputStream out = new ZipOutputStream(buff);
    out.setMethod(ZipOutputStream.DEFLATED);
    out.setLevel(9);//  ww w . java 2  s.  com
    byte[] data = new byte[BUFFER];
    for (DocumentModel doc : documents) {

        // first check if DM is attached to the core
        if (doc.getSessionId() == null) {
            // refetch the doc from the core
            doc = documentManager.getDocument(doc.getRef());
        }

        // NXP-2334 : skip deleted docs
        if (doc.getCurrentLifeCycleState().equals("delete")) {
            continue;
        }

        BlobHolder bh = doc.getAdapter(BlobHolder.class);
        if (doc.isFolder() && !isEmptyFolder(doc)) {
            addFolderToZip("", out, doc, data);
        } else if (bh != null) {
            addBlobHolderToZip("", out, data, (PictureBlobHolder) bh);
        }
    }
    try {
        out.close();
    } catch (ZipException e) {
        // empty zip file, do nothing
        setFacesMessage("label.clipboard.emptyDocuments");
        return null;
    }
    response.setHeader("Content-Disposition", "attachment; filename=\"" + "clipboard.zip" + "\";");
    response.setContentType("application/gzip");
    response.flushBuffer();
    context.responseComplete();
    return null;
}

From source file:org.fenixedu.academic.ui.struts.action.student.onlineTests.StudentTestsAction.java

public ActionForward exportChecksum(ActionMapping mapping, ActionForm form, HttpServletRequest request,
        HttpServletResponse response) throws Exception {
    final String logId = request.getParameter("logId");
    final User userView = getUserView(request);
    if (logId != null && logId.length() != 0) {
        StudentTestLog studentTestLog = FenixFramework.getDomainObject(logId);
        if (studentTestLog.getStudent().getPerson().equals(userView.getPerson())) {
            List<StudentTestLog> studentTestLogs = new ArrayList<StudentTestLog>();
            studentTestLogs.add(studentTestLog);
            byte[] data = ReportsUtils
                    .generateReport("org.fenixedu.academic.domain.onlineTests.StudentTestLog.checksumReport",
                            null, studentTestLogs)
                    .getData();/*from  ww w  . j a  v a2s. co  m*/
            response.setContentType("application/pdf");
            response.addHeader("Content-Disposition",
                    "attachment; filename=" + studentTestLog.getStudent().getNumber() + ".pdf");
            response.setContentLength(data.length);
            ServletOutputStream writer = response.getOutputStream();
            writer.write(data);
            writer.flush();
            writer.close();
            response.flushBuffer();
            return mapping.findForward("");
        }
    }
    return null;
}

From source file:org.fao.unredd.portal.ApplicationController.java

@RequestMapping("/layers.json")
public void getLayers(HttpServletRequest request, HttpServletResponse response) throws IOException {

    response.setContentType("application/json;charset=UTF-8");
    try {//from w w w . j  a  v a2 s .c o  m

        /*
          * Checking whether a custom configuration file has to be requested within an Overview Portal.
          * This feature is useful to upload different custom configuration files (i.e. layers.json) according to the country you want to select
          * within a Regional Portal.
          * 
          * FEATURE:
          * In order to load a specific layers.json, there will be a portals_config/<country_name>/ new dir in the
          * /var/portal/ main directory to host the custom layers.json configuration file. The configuration files available here have a custom
          * syntax defined to fit with the new functionality - i.e. if the portal is for Fiji 
          * Islands the configuration file name will be layers_fiji.json; in order to pick up
          * the right configuration file the head definition will be /portals_config/fiji/layers.json?fiji
          * 
          * @author Alfonsetti
          */
        if (request.getParameterMap().containsKey("fiji")) {
            System.out.println("testfiji");
            response.getWriter().print("layers_json = ");
        } else if (request.getParameterMap().containsKey("jsonp")) {
            response.getWriter().print("layers_json = ");
        }

        response.getWriter().print(setLayerTimes());
        response.flushBuffer();
    } catch (IOException e) {
        logger.error("Error reading file", e);
        response.sendError(HttpServletResponse.SC_INTERNAL_SERVER_ERROR);
    }
}

From source file:net.sourceforge.fenixedu.presentationTier.Action.publico.candidacies.erasmus.ErasmusIndividualCandidacyProcessPublicDA.java

public ActionForward retrieveLearningAgreement(ActionMapping mapping, ActionForm form,
        HttpServletRequest request, HttpServletResponse response) throws Exception {
    MobilityIndividualApplicationProcess process = (MobilityIndividualApplicationProcess) getProcess(request);

    final LearningAgreementDocument document = new LearningAgreementDocument(process);
    byte[] data = ReportsUtils.exportMultipleToPdfAsByteArray(document);

    response.setContentLength(data.length);
    response.setContentType("application/pdf");
    response.addHeader("Content-Disposition", "attachment; filename=" + document.getReportFileName() + ".pdf");

    final ServletOutputStream writer = response.getOutputStream();
    writer.write(data);//from  w  ww  .  ja  v  a2  s. c  om
    writer.flush();
    writer.close();

    response.flushBuffer();
    return mapping.findForward("");
}

From source file:com.ucap.uccc.cmis.impl.atompub.CmisAtomPubServlet.java

@Override
protected void service(HttpServletRequest request, HttpServletResponse response)
        throws ServletException, IOException {

    CallContext context = null;//ww w .  j a v  a  2 s. co  m
    try {
        if (METHOD_HEAD.equals(request.getMethod())) {
            request = new HEADHttpServletRequestWrapper(request);
            response = new NoBodyHttpServletResponseWrapper(response);
        } else {
            request = new QueryStringHttpServletRequestWrapper(request);
        }

        // set default headers
        response.addHeader("Cache-Control", "private, max-age=0");
        response.addHeader("Server", ServerVersion.OPENCMIS_SERVER);

        context = createContext(getServletContext(), request, response);
        dispatch(context, request, response);
    } catch (Exception e) {
        if (e instanceof CmisUnauthorizedException) {
            response.setHeader("WWW-Authenticate", "Basic realm=\"CMIS\"");
            response.sendError(HttpServletResponse.SC_UNAUTHORIZED, "Authorization Required");
        } else if (e instanceof CmisPermissionDeniedException) {
            if ((context == null) || (context.getUsername() == null)) {
                response.setHeader("WWW-Authenticate", "Basic realm=\"CMIS\"");
                response.sendError(HttpServletResponse.SC_UNAUTHORIZED, "Authorization Required");
            } else {
                response.sendError(getErrorCode((CmisPermissionDeniedException) e), e.getMessage());
            }
        } else {
            printError(e, response);
        }
    } finally {
        // we are done.
        response.flushBuffer();
    }
}