Example usage for javax.servlet.http HttpServletResponse flushBuffer

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:de.unirostock.sems.cbarchive.web.servlet.IconServlet.java

protected void doGet(HttpServletRequest request, HttpServletResponse response)
        throws UnsupportedEncodingException {
    // set charset
    response.setCharacterEncoding(Fields.CHARSET);
    request.setCharacterEncoding(Fields.CHARSET);

    // splitting request URL
    String requestUrl = request.getRequestURI();
    LOGGER.debug("IconServlet request: ", requestUrl);

    if (requestUrl != null && !requestUrl.isEmpty()) {

        String formatString = null;
        try {//from w  w w . java2  s .  co m
            response.setContentType("image/png");

            formatString = requestUrl.substring(requestUrl.indexOf("res/icon/") + 9);
            LOGGER.debug("format: ", formatString);

            URI format = new URI(formatString);
            LOGGER.debug("format url: ", format);
            OutputStream output = response.getOutputStream();

            InputStream input = Iconizer.formatToIconStream(format);
            int size = IOUtils.copy(input, output);
            response.setContentLength(size);

            output.flush();
            output.close();
            input.close();

            response.flushBuffer();

        } catch (IOException e) {
            LOGGER.error(e, "IOException while loading icon");
        } catch (URISyntaxException e) {
            LOGGER.warn(e, "Not able to generate URL for Iconizer: ", formatString);
        }

    }

}

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From source file:org.asqatasun.webapp.controller.AuditScenarioController.java

@RequestMapping(value = TgolKeyStore.DOWNLOAD_SCENARIO_URL_CONTRACT_URL, method = RequestMethod.GET)
@Secured({ TgolKeyStore.ROLE_USER_KEY, TgolKeyStore.ROLE_ADMIN_KEY })
public void getScenarioFile(@RequestParam(TgolKeyStore.CONTRACT_ID_KEY) String contractId,
        @RequestParam(TgolKeyStore.SCENARIO_ID_KEY) String scenarioId, HttpServletResponse response) {
    Contract contract = getContractDataService().read(Long.valueOf(contractId));
    if (contract.getUser().getId().equals(getCurrentUser().getId())) {
        try {// w w  w . j  a v a 2  s . co m
            for (Scenario scenario : contract.getScenarioSet()) {
                if (scenario.getId().equals(Long.valueOf(scenarioId))) {
                    InputStream is = IOUtils.toInputStream(scenario.getContent());
                    IOUtils.copy(is, response.getOutputStream());
                    response.setContentType(TgolKeyStore.CONTENT_TYPE);
                    StringBuilder strb = new StringBuilder(TgolKeyStore.ATTACHMENT);
                    strb.append(scenario.getLabel());
                    strb.append(TgolKeyStore.JSON_EXTENSION);
                    response.setHeader(TgolKeyStore.CONTENT_DISPOSITION, strb.toString());
                    response.flushBuffer();
                    break;
                }
            }
            throw new ForbiddenPageException(getCurrentUser());
        } catch (IOException ex) {
            throw new RuntimeException("IOError writing file to output stream");
        }
    } else {
        throw new ForbiddenPageException(getCurrentUser());
    }
}

---

From source file:net.sourceforge.fenixedu.presentationTier.Action.gep.ects.ManageEctsComparabilityTablesDispatchAction.java

public ActionForward exportTemplate(ActionMapping mapping, ActionForm actionForm, HttpServletRequest request,
        HttpServletResponse response) {
    EctsTableFilter filter = readFilter(request);
    try {/*from  w  ww. ja va  2 s.  co  m*/
        try {
            SheetData<?> builder = exportTemplate(request, filter);
            response.setContentType("text/csv");
            response.setHeader("Content-disposition", "attachment; filename=template.tsv");
            new SpreadsheetBuilder().addSheet("template", builder).build(WorkbookExportFormat.TSV,
                    response.getOutputStream());
            return null;
        } finally {
            response.flushBuffer();
        }
    } catch (IOException e) {
        addActionMessage(request, "error.ects.comparabilityTables.ioException");
        processStatus(request, filter);
        request.setAttribute("filter", filter);
        return mapping.findForward("index");
    }
}

---

From source file:org.ejbca.extra.ra.ScepRAServlet.java

/**
 * Sends back a number of bytes//from w ww  .  j a va  2s.  c  om
 *
 * @param bytes DER encoded certificate to be returned
 * @param out output stream to send to
 * @param contentType mime type to send back bytes as
 * @param fileName to call the file in a Content-disposition, can be null to leave out this header
 *
 * @throws Exception on error
 */
private void sendBinaryBytes(byte[] bytes, HttpServletResponse out, String contentType, String filename)
        throws Exception {
    if ((bytes == null) || (bytes.length == 0)) {
        log.error("0 length can not be sent to client!");
        return;
    }
    if (filename != null) {
        // We must remove cache headers for IE
        removeCacheHeaders(out);
        out.setHeader("Content-disposition", "filename=\"" + filename + "\"");
    }
    // Set content-type to general file
    out.setContentType(contentType);
    out.setContentLength(bytes.length);
    // Write the certificate
    ServletOutputStream os = out.getOutputStream();
    os.write(bytes);
    out.flushBuffer();
    log.debug("Sent " + bytes.length + " bytes to client");
}

---

From source file:ru.codemine.ccms.router.TaskRouter.java

@Secured("ROLE_USER")
@RequestMapping(value = "/tasks/getfile/{urlfilename}", method = RequestMethod.GET)
public void getFileFromTask(@RequestParam("taskid") Integer taskid, @RequestParam("fileid") Long fileid,
        @PathVariable("urlfilename") String urlFileName, HttpServletResponse response) {
    Task task = taskService.getById(taskid);
    DataFile targetDataFile = dataFileService.getById(fileid);
    Employee currentUser = employeeService.getCurrentUser();

    if (targetDataFile == null || task == null || !task.isInTask(currentUser))
        return;//  w w w  .j a  v  a  2 s . c  om

    File targetFile = new File(targetDataFile.getFilename());

    try {
        String encFilename = URLEncoder.encode(targetDataFile.getViewName().replace(" ", "_"), "UTF-8");
        String decFilename = URLDecoder.decode(encFilename, "ISO8859_1");
        response.setHeader("Content-Disposition", "attachment;filename=" + decFilename);

        BufferedInputStream bs = new BufferedInputStream(new FileInputStream(targetFile));
        IOUtils.copy(bs, response.getOutputStream());
        response.flushBuffer();
    } catch (IOException ex) {
        log.error("    " + targetDataFile.getViewName()
                + ", : " + ex.getLocalizedMessage());
    }

}

---

From source file:eionet.transfer.controller.FileOpsController.java

/**
 * AJAX Upload file for transfer./*from  www  .ja v  a 2  s . c om*/
 */
@RequestMapping(value = "/fileupload", method = RequestMethod.POST, params = "ajaxupload=1")
public void importFileWithAJAX(@RequestParam("file") MultipartFile myFile, @RequestParam("fileTTL") int fileTTL,
        HttpServletRequest request, HttpServletResponse response) throws IOException {

    if (myFile == null || myFile.getOriginalFilename() == null) {
        response.sendError(HttpServletResponse.SC_BAD_REQUEST, "Select a file to upload");
        return;
    }
    if (fileTTL > 90) {
        response.sendError(HttpServletResponse.SC_BAD_REQUEST, "Invalid expiration date");
        return;
    }
    String uuidName = storeFile(myFile, fileTTL);
    response.setContentType("text/xml");
    PrintWriter printer = response.getWriter();
    StringBuffer requestUrl = request.getRequestURL();
    String url = requestUrl.substring(0, requestUrl.length() - "/fileupload".length());
    printer.println("<?xml version='1.0'?>");
    printer.println("<package>");
    printer.println("<downloadLink>" + url + "/download/" + uuidName + "</downloadLink>");
    printer.println("<deleteLink>" + url + "/delete/" + uuidName + "</deleteLink>");
    printer.println("</package>");
    printer.flush();
    response.flushBuffer();
}

---

From source file:net.sourceforge.fenixedu.presentationTier.Action.scientificCouncil.credits.MasterDegreeCreditsManagementDispatchAction.java

public ActionForward exportToExcel(ActionMapping mapping, ActionForm actionForm, HttpServletRequest request,
        HttpServletResponse response) throws FenixServiceException {

    ExecutionDegree executionDegree = getExecutionDegreeFromParameter(request);
    List<MasterDegreeCreditsDTO> listing = getListing(executionDegree);
    if (!listing.isEmpty()) {
        Collections.sort(listing, new BeanComparator("curricularCourse.name"));
    }//from w w w.j  a va  2s.  c  om

    try {
        String filename = getFileName(executionDegree);
        response.setContentType("application/vnd.ms-excel");
        response.setHeader("Content-disposition", "attachment; filename=" + filename + ".xls");

        ServletOutputStream writer = response.getOutputStream();
        exportToXls(executionDegree, listing, writer);

        writer.flush();
        response.flushBuffer();

    } catch (IOException e) {
        throw new FenixServiceException();
    }
    return null;
}

---

From source file:org.nuxeo.ecm.automation.jsf.operations.ExtDownloadFile.java

@OperationMethod
public void run(Blob blob) throws Exception {
    if (blob == null) {
        throw new OperationException("there is no file content available");
    }//from   w  w  w .j  a va 2 s. co m
    FacesContext faces = FacesContext.getCurrentInstance();
    String filename = blob.getFilename();
    if (blob.getLength() > Functions.getBigFileSizeLimit()) {

        HttpServletResponse response = (HttpServletResponse) FacesContext.getCurrentInstance()
                .getExternalContext().getResponse();
        HttpServletRequest request = (HttpServletRequest) FacesContext.getCurrentInstance().getExternalContext()
                .getRequest();

        if (!blob.isPersistent()) {
            blob.persist();
        }

        String sid = "Blob-" + ctx.getCoreSession().getSessionId() + "-" + System.currentTimeMillis();
        sid = sid.replace("#", "");

        request.getSession(true).setAttribute(sid, blob);

        String bigDownloadURL = BaseURL.getBaseURL(request);
        bigDownloadURL += "nxbigblob" + "/" + sid;

        try {
            // Operation was probably triggered by a POST
            // so we need to desactivate the ResponseWrapper that would rewrite the URL
            request.setAttribute(NXAuthConstants.DISABLE_REDIRECT_REQUEST_KEY, new Boolean(true));
            // send the redirect
            response.sendRedirect(bigDownloadURL);
            // mark all JSF processing as completed
            response.flushBuffer();
            FacesContext.getCurrentInstance().responseComplete();
            // set Outcome to null (just in case)
            ctx.getVars().put("Outcome", null);
        } catch (IOException e) {
            log.error("Error while redirecting for big blob downloader", e);
        }
    } else {
        ComponentUtils.download(faces, blob, filename);
    }
}

---

From source file:de.knurt.fam.template.controller.DelegateResourceController.java

@RequestMapping(value = "/jobsurvey__{filename}__html__delegate.fam", method = RequestMethod.GET)
public final ModelAndView handleGetJobsurvey(HttpServletResponse response, HttpServletRequest request) {
    this.generalInit(response, "text/html; charset=UTF-8");
    User user = SessionAuth.user(request);
    if (user == null) {
        return RedirectResolver.redirect(RedirectTarget.PUBLIC_HOME);
    } else {/*from   ww w .j a v  a  2 s . c o m*/
        OutputStream os = null;
        try {
            os = response.getOutputStream();
            JobSurveyView jsv = JobSurveyViewFactory.getJobSurveyView(user, request, response);
            if (jsv.isValidRequest()) {
                IOUtils.write(jsv.getView(), os);
                response.flushBuffer();
            } else {
                FamLog.error("no jobsurvey found!;" + request.getQueryString() + ";" + user.getUsername(),
                        201203281229l);
                IOUtils.write("please report error 201203281229-" + FamDateFormat.getDateAndTimeShort(), os);
            }
        } catch (IOException e) {
            FamLog.exception(e, 201202160927l);
        } finally {
            IOUtils.closeQuietly(os);
        }
        return null;
    }
}

---

From source file:org.apache.sentry.api.service.thrift.LogLevelServlet.java

/**
 * Parse the class name and log level in the http servlet request.
 * If the request contains only class name, return the log level in the response message.
 * If the request contains both class name and level, set the log level to the requested level
 * and return the setting result in the response message.
 *//*from w w  w .  ja  va 2 s .co  m*/
@Override
public void doGet(HttpServletRequest request, HttpServletResponse response)
        throws ServletException, IOException {
    String logName = getParameter(request, "log");
    String level = getParameter(request, "level");
    response.setContentType("text/html;charset=utf-8");
    response.setStatus(HttpServletResponse.SC_OK);
    PrintWriter out = response.getWriter();

    if (logName != null) {
        Logger logInstance = LogManager.getLogger(logName);
        if (level == null) {
            out.write(
                    String.format(FORMS_GET, escapeHtml(logName), logInstance.getEffectiveLevel().toString()));
        } else if (isLogLevelValid(level)) {
            logInstance.setLevel(Level.toLevel(level));
            out.write(String.format(FORMS_SET, escapeHtml(logName), escapeHtml(level), escapeHtml(level),
                    logInstance.getEffectiveLevel().toString()));
        } else {
            response.sendError(HttpServletResponse.SC_BAD_REQUEST, "Invalid log level: " + escapeHtml(level));
            return;
        }
    }
    out.write(FORMS_END);
    out.close();
    response.flushBuffer();
}

---

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