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.cognitivabrasil.repositorio.web.FileController.java

@RequestMapping(value = "/{id}", method = RequestMethod.GET)
public void getFile(@PathVariable("id") int id, HttpServletResponse response) throws IOException {
    Files f = fileService.get(id);
    if (f == null) {
        response.sendError(HttpServletResponse.SC_GONE, "O arquivo solicitado no foi encontrado.");
    } else {//from www  . ja va 2s .c  om
        String fileName = f.getLocation();

        try {
            // get your file as InputStream
            InputStream is = new FileInputStream(new File(fileName));

            response.setHeader("Content-Disposition", "attachment; filename=" + f.getName());
            response.setContentType(f.getContentType());
            // copy it to response's OutputStream
            IOUtils.copy(is, response.getOutputStream());

            response.flushBuffer();

        } catch (FileNotFoundException fe) {
            response.sendError(HttpServletResponse.SC_GONE, "O arquivo solicitado no foi encontrado.");
            LOG.error("O arquivo solicitado no foi encontrado.", fe);
        } catch (IOException ex) {
            LOG.error("Error writing file to output stream. Filename was '" + fileName + "'");
            throw ex;
        }
    }
}

From source file:org.jasig.ssp.service.impl.StudentDocumentServiceImpl.java

@Override
public void downloadFile(UUID id, HttpServletResponse response)
        throws ObjectNotFoundException, FileNotFoundException, IOException {
    StudentDocument studentDocument = get(id);
    if (studentDocument == null) {
        throw new ObjectNotFoundException("could not find document with id of " + id,
                StudentDocument.class.toString());
    }/*from  w  w w.jav  a2  s . c o m*/
    File file = new File(calculateAbsoluteFileLocation(studentDocument.getFileLocation()));
    InputStream is = new FileInputStream(file);
    response.setHeader("Content-Disposition", "attachment; filename=" + studentDocument.getFileName());
    // copy it to response's OutputStream
    IOUtils.copy(is, response.getOutputStream());
    response.flushBuffer();
}

From source file:com.almende.eve.transport.http.EveServlet.java

/**
 * Handle hand shake.//from  ww  w.ja  v a  2 s. c  o  m
 * 
 * @param req
 *            the req
 * @param res
 *            the res
 * @return true, if successful
 * @throws IOException
 *             Signals that an I/O exception has occurred.
 */
private boolean handleHandShake(final HttpServletRequest req, final HttpServletResponse res)
        throws IOException {
    final String time = req.getHeader("X-Eve-requestToken");

    if (time == null) {
        return false;
    }
    final String url = req.getRequestURI();
    final String id = getId(url);
    final HttpTransport transport = HttpService.get(myUrl, id);
    if (transport != null) {
        final String token = transport.getTokenstore().get(time);
        if (token == null) {
            res.sendError(HttpServletResponse.SC_PRECONDITION_FAILED);
        } else {
            res.setHeader("X-Eve-replyToken", token);
            res.setStatus(HttpServletResponse.SC_OK);
            res.flushBuffer();
        }
    }
    return true;
}

From source file:org.nuxeo.ecm.platform.ui.web.auth.ntlm.NTLMAuthenticator.java

public Boolean handleLoginPrompt(HttpServletRequest httpRequest, HttpServletResponse httpResponse,
        String baseURL) {// w  ww . j a  v a2s  .  c om

    log.debug("Handle NTLM login prompt");
    NtlmPasswordAuthentication ntlm = null;
    HttpSession httpSession = httpRequest.getSession(FORCE_SESSION_CREATION);

    if (httpSession != null) {
        ntlm = (NtlmPasswordAuthentication) httpSession.getAttribute(NTLM_HTTP_AUTH_SESSION_KEY);
    }

    if (httpSession == null || ntlm == null) {
        log.debug("Sending NTLM Challenge/Response request to browser");
        httpResponse.setHeader("WWW-Authenticate", "NTLM");
        httpResponse.setStatus(HttpServletResponse.SC_UNAUTHORIZED);
        httpResponse.setContentLength(0);
        try {
            httpResponse.flushBuffer();
        } catch (IOException e) {
            log.error("Error while flushing buffer:" + e.getMessage());
            e.printStackTrace();
        }
        return true;
    } else {
        log.debug("No NTLM Prompt done since NTLM Auth was found :" + ntlm.getUsername());
        return false;
    }
}

From source file:com.cognitivabrasil.repositorio.web.FileController.java

@RequestMapping(value = "/{id}/thumbnail", method = RequestMethod.GET)
public void getThumbnail(@PathVariable("id") Long id, HttpServletResponse response) throws IOException {

    if (id == null || id == 0) {
        response.sendError(HttpServletResponse.SC_NOT_FOUND, "O arquivo solicitado no foi encontrado.");
    } else {//w ww .j  av  a  2 s  .c  o m
        String fileName = Config.FILE_PATH + id + "/thumbnail";

        try {
            // get your file as InputStream
            InputStream is = new FileInputStream(new File(fileName));

            response.setHeader("Content-Disposition", "attachment; filename= thumbnail" + id);
            response.setStatus(HttpServletResponse.SC_CREATED);
            // copy it to response's OutputStream
            IOUtils.copy(is, response.getOutputStream());

            response.flushBuffer();

        } catch (FileNotFoundException fe) {
            // get your file as InputStream

            InputStream is = new FileInputStream(new File(DEFAULT_THUMBNAIL_PATH));

            response.setHeader("Content-Disposition", "attachment; filename=default-thumbnail.png");
            response.setContentType(MediaType.IMAGE_PNG_VALUE);
            response.setStatus(HttpServletResponse.SC_CREATED);
            // copy it to response's OutputStream
            IOUtils.copy(is, response.getOutputStream());

            response.flushBuffer();
            LOG.error("Imagen solicitada no foi encontrada.", fe);
        } catch (IOException ex) {
            LOG.error("Error writing file to output stream. Filename was '" + fileName + "'");
            throw ex;
        }
    }
}

From source file:org.pentaho.pat.server.servlet.ExportController.java

protected ModelAndView handle(final HttpServletRequest request, final HttpServletResponse response,
        final Object command, final BindException errors) throws Exception {
    final QueryExportBean queryExportBean = (QueryExportBean) command;

    try {// w  w  w .  j ava 2 s.  c  o m
        if (OlapUtil.getCellSet(queryExportBean.getQuery()) != null) {

            byte[] resultExcel = exportExcel(queryExportBean.getQuery());
            if (resultExcel != null && resultExcel.length > 0) {
                response.setContentType("application/vnd.ms-excel"); //$NON-NLS-1$
                response.setHeader("Content-Disposition", "attachment; filename=PAT_Export.xls");
                response.setHeader("Content-Length", "" + resultExcel.length);
                response.getOutputStream().write(resultExcel);
                response.flushBuffer();

            } else {
                LOG.error("Empty Excel resultset - nothing to return");
                response.setStatus(HttpServletResponse.SC_BAD_REQUEST);
            }

        } else {
            LOG.error("CellSet for query ID not found :" + queryExportBean.getQuery());
            response.setStatus(HttpServletResponse.SC_BAD_REQUEST);
        }
    } catch (Exception e) {
        LOG.error(e.getMessage());
        response.setStatus(HttpServletResponse.SC_BAD_REQUEST);
    }

    return null;
}

From source file:org.wrml.server.WrmlServlet.java

void writeNotFound(final HttpServletResponse response) throws IOException {

    response.setStatus(HttpServletResponse.SC_NOT_FOUND);
    response.setContentLength(0);/*  ww w .j a  va2 s .  c  o  m*/
    response.flushBuffer();
}

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

public void handleWithCompression(HttpServletRequest req, HttpServletResponse res)
        throws IOException, ServletException {
    res.setContentType("text/plain");
    String path = req.getPathInfo();
    if (!StringUtils.isBlank(path)) {
        int batchIdStartIndex = path.lastIndexOf("/") + 1;
        String nodeIdBatchId = path.substring(batchIdStartIndex);
        if (nodeIdBatchId.contains("-")) {
            int dashIndex = nodeIdBatchId.lastIndexOf("-");
            if (dashIndex > 0) {
                String nodeId = nodeIdBatchId.substring(0, dashIndex);
                String batchId = nodeIdBatchId.substring(dashIndex + 1, nodeIdBatchId.length());
                if (!dataExtractorService.extractOnlyOutgoingBatch(nodeId, Long.parseLong(batchId),
                        res.getWriter())) {
                    ServletUtils.sendError(res, HttpServletResponse.SC_NOT_FOUND);
                } else {
                    res.flushBuffer();
                }/*from  w w w  . j  a v  a2  s.c o m*/
            } else {
                ServletUtils.sendError(res, HttpServletResponse.SC_NOT_FOUND);
            }
        } else {
            ServletUtils.sendError(res, HttpServletResponse.SC_NOT_FOUND);
        }
    } else {
        res.sendError(HttpServletResponse.SC_NOT_FOUND);
    }
}

From source file:com.nec.harvest.servlet.interceptor.BackOriginGroupInterceptor.java

@Override
@SuppressWarnings("unchecked")
public boolean preHandle(HttpServletRequest request, HttpServletResponse response, Object handler)
        throws Exception {
    final User userPricipal = AuthenticatedUserDetails.getUserPrincipal();
    if (userPricipal == null || userPricipal.getOrganization() == null) {
        if (logger.isDebugEnabled()) {
            logger.debug("Please login again with right permission");
        }//w ww . j  av  a2 s . c om
        logger.info("Sorry, you don't have permission to access this url");

        // Sorry, you don't have permission to access this url. Please login again with right permission
        response.setContentType(HttpServletContentType.PLAN_TEXT);
        response.sendRedirect(request.getContextPath() + "/logout");
        response.flushBuffer();
        return false;
    }

    final HandlerMethod handlerMethod = (org.springframework.web.method.HandlerMethod) handler;
    final Object controller = handlerMethod.getBean();
    if (controller instanceof MenuController) {
        return super.preHandle(request, response, handler);
    }

    final Map<String, Object> pathVariables = (Map<String, Object>) request
            .getAttribute(HandlerMapping.URI_TEMPLATE_VARIABLES_ATTRIBUTE);

    final String PRO_GROUP_NO = "proGNo";
    final String proGroupNo = (String) pathVariables.get(PRO_GROUP_NO);
    final boolean hasMenuGroups = menuGroupService
            .hasMenuGroupByUserRoleAndSpecificGroup(userPricipal.getUsrKbn(), proGroupNo);
    if (!hasMenuGroups) {
        logger.info("Sorry, you don't have permission to access this url");

        // Sorry, you don't have permission to access this url. Please login again with right permission
        response.setContentType(HttpServletContentType.PLAN_TEXT);
        response.sendRedirect(request.getContextPath() + "/logout");
        response.flushBuffer();
        return false;
    }

    final String ORG_CODE = "orgCode";
    final HttpSession session = request.getSession();

    // Get active original code
    String orgCode = (String) pathVariables.get(ORG_CODE);
    if (StringUtils.isNotEmpty(orgCode)) {
        final String userOrgCode = (String) session.getAttribute(Constants.SESS_ORGANIZATION_CODE);
        if (!userOrgCode.equals(orgCode)) {
            logger.info("Sorry, you don't have permission to access this url");

            // Sorry, you don't have permission to access this url. Please login again with right permission
            response.setContentType(HttpServletContentType.PLAN_TEXT);
            response.sendRedirect(request.getContextPath() + "/logout");
            response.flushBuffer();
            return false;
        }
    }

    // All of original groups
    String[] processGroupNumbers = null;
    if (controller instanceof DailyReportingProGroup) {
        processGroupNumbers = ((DailyReportingProGroup) controller).getProcessGroupNumber();
    } else if (controller instanceof MasterManagementProGroup) {
        processGroupNumbers = ((MasterManagementProGroup) controller).getProcessGroupNumber();
    } else if (controller instanceof ProfitAndLossManagementProGroup) {
        processGroupNumbers = ((ProfitAndLossManagementProGroup) controller).getProcessGroupNumber();
    }

    // If the end-user already logged in into Harvest system, but have an error occurred 
    // when trying to set some information into SESSION then we can reset again that 
    // information into SESSION
    orgCode = (String) session.getAttribute(Constants.SESS_ORGANIZATION_CODE);
    if (orgCode == null) {
        session.setAttribute(Constants.SESS_ORGANIZATION_CODE, userPricipal.getOrganization().getStrCode());
    }

    final Object businessDay = session.getAttribute(Constants.SESS_BUSINESS_DAY);
    if (businessDay == null) {
        BusinessDayService businessDayService = ContextAwareContainer.getInstance()
                .getComponent(BusinessDayService.class);
        final BusinessDay businessDate = businessDayService.findLatest();

        // 
        session.setAttribute(Constants.SESS_BUSINESS_DAY, businessDate.getEigDate());
    }

    // Granted authority of user logged-in
    final String grantedAuthority = userPricipal.getUsrKbn();
    final Authentication authentication = SecurityContextHolder.getContext().getAuthentication();
    for (GrantedAuthority authority : authentication.getAuthorities()) {
        logger.info("User {} was logged-in with granted role {}", authentication.getName(),
                authority.getAuthority());
    }

    /**
     * ?
     * 
     * 1?2?3??4
     */
    logger.info(
            "Granted authority of logged user: {}, NOTE: 1?2?3??4",
            grantedAuthority);

    // 
    if (StringUtils.isNotEmpty(grantedAuthority)) {
        if (ArrayUtils.isNotEmpty(processGroupNumbers)) {
            // Trying to store the original group menu into the REQUEST
            final String processGroupNumber = processGroupNumbers[Integer.valueOf(grantedAuthority) - 1];
            request.setAttribute(Constants.SESS_ORIGINAL_GROUP, processGroupNumber);

            // 
            logger.info("Were are trying to handle the sub-menu of group {}", processGroupNumber);
        }
    }

    return super.preHandle(request, response, handler);
}

From source file:net.duckling.ddl.web.controller.UploadImgController.java

@RequestMapping
public void execute(HttpServletRequest request, HttpServletResponse response) throws IOException {
    Site site = VWBContext.findSite(request);
    FileVersion attachItem = new FileVersion();
    response.setContentType("text/xml");
    response.setCharacterEncoding("UTF-8");
    ///* w  w  w . ja  va  2 s  . c  o  m*/
    String url = request.getParameter("url");
    HttpClient client = new HttpClient();
    GetMethod getMethod = new GetMethod(url);
    String fakeReferer = getFakeReferer(url);//??
    if (fakeReferer != null) {
        String thisReferer = request.getHeader("Referer");
        if (thisReferer.contains(fakeReferer)) {//????
            response.getWriter().write(getReturnXml(site, 0, "??", attachItem));
            response.flushBuffer();
            return;
        }
        getMethod.setRequestHeader("Referer", fakeReferer);
    }
    client.executeMethod(getMethod);

    //?

    try {
        attachItem = uploadImg(getMethod, request);
    } catch (NoEnoughSpaceException e) {
        JSONObject j = new JSONObject();
        j.put("result", false);
        j.put("message", e.getMessage());
        j.put("error", e.getMessage());
        JsonUtil.writeJSONObject(response, j);
        return;
    }
    //
    response.getWriter().write("");
    response.getWriter().write(getReturnXml(site, 1, "????", attachItem));
    response.flushBuffer();
}