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:com.nec.harvest.security.handler.HarvestLogoutSuccessHandler.java

/**
 * Causes a logout to be completed. The method must complete successfully
 * //  w  ww .  j  a v  a 2s.  c o m
 * @param request
 * @param response
 * @param authentication
 * @throws IOException
 * @throws ServletException
 */
protected void onLogout(HttpServletRequest request, HttpServletResponse response, Authentication authentication)
        throws IOException, ServletException {
    final HttpSession session = request.getSession();
    if (session != null) {
        // ??????????
        session.invalidate();

        // Invalidates this session then unbinds any objects bound to it
        logger.info(
                "??????????");
    }

    // Remove from LRU Cache
    AuthenticatedUserDetails.removeUserPrincipal();

    // The {} successfully logged out...
    String username = authentication != null ? authentication.getName() : "HARVEST SYSTEM";
    logger.info("The {} successfully logged out...", username);

    // Empty authentication
    SecurityContextHolder.getContext().setAuthentication(null);

    // Redirect to LOGIN
    response.setStatus(HttpServletResponse.SC_OK);
    response.setContentType(HttpServletContentType.PLAN_TEXT);
    response.sendRedirect(request.getContextPath() + "/login");
    response.flushBuffer();
}

From source file:org.jumpmind.symmetric.web.FileSyncPushUriHandler.java

public void handle(HttpServletRequest req, HttpServletResponse res)
        throws IOException, ServletException, FileUploadException {
    String nodeId = ServletUtils.getParameter(req, WebConstants.NODE_ID);

    if (StringUtils.isBlank(nodeId)) {
        ServletUtils.sendError(res, HttpServletResponse.SC_BAD_REQUEST, "Node must be specified");
        return;//from w  w w  .  ja v a 2s .  com
    } else if (!ServletFileUpload.isMultipartContent(req)) {
        ServletUtils.sendError(res, HttpServletResponse.SC_BAD_REQUEST, "We only handle multipart requests");
        return;
    } else {
        log.debug("File sync push request received from {}", nodeId);
    }

    ServletFileUpload upload = new ServletFileUpload();

    // Parse the request
    FileItemIterator iter = upload.getItemIterator(req);
    while (iter.hasNext()) {
        FileItemStream item = iter.next();
        String name = item.getFieldName();
        if (!item.isFormField()) {
            log.debug("Processing upload file field " + name + " with file name " + item.getName()
                    + " detected.");
            engine.getFileSyncService().loadFilesFromPush(nodeId, item.openStream(), res.getOutputStream());

        }
    }

    res.flushBuffer();

}

From source file:de.itsvs.cwtrpc.controller.RemoteServiceControllerServlet.java

protected void processUnexpectedFailure(HttpServletRequest request, HttpServletResponse response,
        Throwable exception) throws ServletException, IOException {
    log.error("Unexpected error while processing service request", exception);

    if (CwtRpcUtils.getRpcSessionInvalidationPolicy(request).isInvalidateOnUnexpectedException()) {
        invalidateSession(request);//w  w  w .j  ava2  s  . c  om
    }
    if (!response.isCommitted()) {
        response.reset();
        addNoCacheResponseHeaders(request, response);
        RPCServletUtils.writeResponseForUnexpectedFailure(getServletContext(), response, exception);
        /*
         * Flush all remaining output to the client (client can continue
         * immediately). Also response will be marked as being committed
         * (status may be required later by a filter).
         */
        response.flushBuffer();
    }
}

From source file:org.openmrs.module.CDAGenerator.web.controller.ExportCDAController.java

@RequestMapping(method = RequestMethod.POST)
public void manage(@RequestParam(value = "patientId", required = true) org.openmrs.Patient p,
        @RequestParam(value = "ChildCDAHandler", required = false) String ccth, BaseCdaTypeHandler bcth,
        HttpServletResponse response) {

    ClinicalDocument cda = null;/*from  www . j  av  a  2  s  .c om*/

    String[] arr = ccth.split(",");
    System.out.println("----->" + arr[0]);
    System.out.println("----->" + arr[1]);
    System.out.println("----->" + arr[2]);

    CDAGeneratorService cdaservice = (CDAGeneratorService) Context.getService(CDAGeneratorService.class);

    bcth.setDocumentFullName(arr[0]);
    bcth.setDocumentShortName(arr[1]);
    bcth.setDocumentDescription(arr[2]);
    bcth.setTemplateid(arr[3]);
    bcth.setFormatCode(arr[4]);

    cda = cdaservice.produceCDA(p, bcth);
    response.setHeader("Content-Disposition", "attachment;filename=" + p.getGivenName() + "sampleTest.xml");
    try {

        StringWriter r = new StringWriter();

        CDAUtil.save(cda, r);
        String ccdDoc = r.toString();
        ccdDoc = ccdDoc.replaceAll("&lt;", "<");
        ccdDoc = ccdDoc.replaceAll("&quot;", "\"");
        byte[] res = ccdDoc.getBytes(Charset.forName("UTF-8"));
        response.setContentType("text/xml");
        response.setCharacterEncoding("UTF-8");
        response.getOutputStream().write(res);
        response.flushBuffer();
    } catch (IOException e) {

        e.printStackTrace();
    } catch (Exception e) {
        e.printStackTrace();
    }
}

From source file:org.fenixedu.academic.ui.struts.action.administrativeOffice.lists.StudentsListByCurricularCourseDA.java

public ActionForward downloadStatistics(ActionMapping mapping, ActionForm actionForm,
        HttpServletRequest request, HttpServletResponse response) throws Exception {
    ExecutionYear executionYear = getDomainObject(request, "executionYearId");
    Set<Degree> degreesToInclude = AcademicAccessRule
            .getDegreesAccessibleToFunction(AcademicOperationType.STUDENT_LISTINGS, Authenticate.getUser())
            .collect(Collectors.toSet());

    final String filename = getResourceMessage("label.statistics") + "_"
            + executionYear.getName().replace('/', '-');
    final Spreadsheet spreadsheet = new Spreadsheet(filename);
    addStatisticsHeaders(spreadsheet);//from w  ww .j  a  v  a2 s  . c  o m
    addStatisticsInformation(spreadsheet, executionYear, degreesToInclude);

    response.setContentType("application/vnd.ms-excel");
    response.setHeader("Content-disposition", "attachment; filename=" + filename + ".xls");
    ServletOutputStream writer = response.getOutputStream();

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

    return null;
}

From source file:net.lightbody.bmp.proxy.jetty.jetty.servlet.ServletHandler.java

protected void handleOptions(HttpServletRequest request, HttpServletResponse response) throws IOException {
    // Handle OPTIONS request for entire server
    if ("*".equals(request.getRequestURI())) {
        // 9.2//from w w w.  j  ava  2 s.c om
        response.setIntHeader(HttpFields.__ContentLength, 0);
        response.setHeader(HttpFields.__Allow, __AllowString);
        response.flushBuffer();
    } else
        response.sendError(HttpResponse.__404_Not_Found);
}

From source file:org.nsesa.editor.gwt.an.amendments.server.service.HtmlExportService.java

@Override
public void export(final AmendmentContainerDTO object, final HttpServletResponse response) throws IOException {
    response.setContentType("text/html; charset=UTF-8");
    response.setHeader("Content-Disposition",
            "attachment;filename=" + object.getAmendmentContainerID() + ".html");
    response.setCharacterEncoding("UTF8");

    final String content = object.getBody();
    final InputSource inputSource;
    inputSource = new InputSource(new StringReader(content));

    try {/*from w w  w  . j  a  v  a2  s. co m*/
        final NodeModel model = NodeModel.parse(inputSource);
        final Configuration configuration = new Configuration();
        configuration.setDefaultEncoding("UTF-8");
        configuration.setDirectoryForTemplateLoading(template.getFile().getParentFile());
        final StringWriter sw = new StringWriter();
        Map<String, Object> root = new HashMap<String, Object>();
        root.put("amendment", model);
        root.put("editorUrl", editorUrl);
        configuration.getTemplate(template.getFile().getName()).process(root, sw);
        byte[] bytes = sw.toString().getBytes("utf-8");
        IOUtils.copy(new ByteArrayInputStream(bytes), response.getOutputStream());
        response.setContentLength(bytes.length);
        response.flushBuffer();

    } catch (IOException e) {
        throw new RuntimeException("Could not read file.", e);
    } catch (SAXException e) {
        throw new RuntimeException("Could not parse file.", e);
    } catch (ParserConfigurationException e) {
        throw new RuntimeException("Could not parse file.", e);
    } catch (TemplateException e) {
        throw new RuntimeException("Could not load template.", e);
    }
}

From source file:org.craftercms.cstudio.publishing.servlet.DeployVersionServlet.java

@Override
protected void doPost(HttpServletRequest request, HttpServletResponse response)
        throws ServletException, IOException {
    PrintWriter serverOut = response.getWriter();
    try {/* w  w w  . ja  va  2 s  .c  o  m*/
        String target = request.getParameter(FileUploadServlet.PARAM_TARGET);
        String version = request.getParameter(PARAM_NEW_VERSION);
        if (StringUtils.isEmpty(target)) {
            response.setStatus(HttpServletResponse.SC_BAD_REQUEST);
            serverOut
                    .write("Parameter \"" + FileUploadServlet.PARAM_TARGET + "\" is need and can not be empty");
        } else if (StringUtils.isEmpty(version)) {
            response.setStatus(HttpServletResponse.SC_BAD_REQUEST);
            serverOut.write("Parameter \"" + PARAM_NEW_VERSION + "\" is need and can not be empty");
        } else {
            versioningService.writeNewVersion(version, target);
            response.setStatus(HttpServletResponse.SC_OK);
            serverOut.write(version);
        }
    } catch (VersionException ex) {
        response.setStatus(HttpServletResponse.SC_INTERNAL_SERVER_ERROR);
        serverOut.write(ex.getMessage());
    }
    setDefaultHeaders(response);
    serverOut.flush();
    response.flushBuffer();
}

From source file:cz.zcu.kiv.eegdatabase.webservices.rest.datafile.DataFileServiceImpl.java

/**
 * Method for downloading file from server.
 *
 * @param id       data file identifier//from   ww  w .  j  av  a  2  s .c  o m
 * @param response HTTP response
 * @throws RestServiceException  error while accessing to file
 * @throws SQLException          error while reading file from db
 * @throws IOException           error while reading file
 * @throws RestNotFoundException no such file on server
 */
@Override
@Transactional(readOnly = true)
public void getFile(int id, HttpServletResponse response)
        throws RestServiceException, SQLException, IOException, RestNotFoundException {
    List<DataFile> dataFiles = experimentDao.getDataFilesWhereId(id);
    DataFile file = null;

    if (dataFiles != null && !dataFiles.isEmpty()) {
        file = dataFiles.get(0);
    }

    if (file == null)
        throw new RestNotFoundException("No file with such id!");

    //if is user member of group, then he has rights to download file
    //basic verification, in future should be extended
    ResearchGroup expGroup = file.getExperiment().getResearchGroup();
    if (!isInGroup(personDao.getLoggedPerson(), expGroup.getResearchGroupId()))
        throw new RestServiceException("User does not have access to this file!");

    // copy it to response's OutputStream
    byte[] data = file.getFileContent().getBytes(1, (int) file.getFileContent().length());
    response.setContentType(file.getMimetype());
    response.setContentLength(data.length);
    response.setHeader("Content-Disposition", "attachment; filename=\"" + file.getFilename() + "\"");
    response.getOutputStream().write(data);
    response.flushBuffer();
}

From source file:de.itsvs.cwtrpc.controller.RemoteServiceControllerServlet.java

protected void writeResponse(HttpServletRequest request, HttpServletResponse response,
        PreparedRemoteServiceConfig serviceConfig, String payload) throws IOException {
    final boolean gzipResponse;

    gzipResponse = serviceConfig.isResponseCompressionEnabled() && RPCServletUtils.acceptsGzipEncoding(request)
            && RPCServletUtils.exceedsUncompressedContentLengthLimit(payload);

    if (log.isDebugEnabled()) {
        log.debug("Writing response (gzip=" + gzipResponse + ")");
    }/* ww  w. ja v a2 s  .c o m*/
    addNoCacheResponseHeaders(request, response);
    RPCServletUtils.writeResponse(getServletContext(), response, payload, gzipResponse);
    /*
     * Flush all remaining output to the client (client can continue
     * immediately). Also response will be marked as being committed (status
     * may be required later by a filter).
     */
    response.flushBuffer();
}