Example usage for javax.servlet.http HttpServletResponse setDateHeader

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

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  4. javax.servlet.http.*
  5. HttpServletResponse
  6. setDateHeader

Introduction

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

Prototype

public void setDateHeader(String name, long date);

Source Link

Document

Sets a response header with the given name and date-value.

Usage

From source file:com.googlesource.gerrit.plugins.github.velocity.VelocityStaticServlet.java

@Override
protected void doGet(final HttpServletRequest req, final HttpServletResponse rsp) throws IOException {
    final Resource p = local(req);
    if (p == null) {
        CacheHeaders.setNotCacheable(rsp);
        rsp.setStatus(HttpServletResponse.SC_NOT_FOUND);
        return;//from   w w  w .j av  a 2s  .co m
    }

    final String type = contentType(p.getName());
    final byte[] tosend;
    if (!type.equals("application/x-javascript") && RPCServletUtils.acceptsGzipEncoding(req)) {
        rsp.setHeader("Content-Encoding", "gzip");
        tosend = compress(readResource(p));
    } else {
        tosend = readResource(p);
    }

    CacheHeaders.setCacheable(req, rsp, 12, TimeUnit.HOURS);
    rsp.setDateHeader("Last-Modified", p.getLastModified());
    rsp.setContentType(type);
    rsp.setContentLength(tosend.length);
    final OutputStream out = rsp.getOutputStream();
    try {
        out.write(tosend);
    } finally {
        out.close();
    }
}

From source file:com.metamesh.opencms.rfs.RfsAwareDumpLoader.java

/**
 * @see org.opencms.loader.I_CmsResourceLoader#load(org.opencms.file.CmsObject, org.opencms.file.CmsResource, javax.servlet.http.HttpServletRequest, javax.servlet.http.HttpServletResponse)
 *//* w  w  w  .  j a v a  2  s .  com*/
public void load(CmsObject cms, CmsResource resource, HttpServletRequest req, HttpServletResponse res)
        throws IOException, CmsException {

    if (!(resource instanceof RfsCmsResource)) {
        super.load(cms, resource, req, res);
        return;
    }

    if (canSendLastModifiedHeader(resource, req, res)) {
        // no further processing required
        return;
    }

    if (CmsWorkplaceManager.isWorkplaceUser(req)) {
        // prevent caching for Workplace users
        res.setDateHeader(CmsRequestUtil.HEADER_LAST_MODIFIED, System.currentTimeMillis());
        CmsRequestUtil.setNoCacheHeaders(res);
    }

    RfsCmsResource rfsFile = (RfsCmsResource) resource;
    File f = rfsFile.getRfsFile();

    if (f.getName().toLowerCase().endsWith("webm")) {
        res.setHeader("Content-Type", "video/webm");
    } else if (f.getName().toLowerCase().endsWith("ogv")) {
        res.setHeader("Content-Type", "video/ogg");
    } else if (f.getName().toLowerCase().endsWith("mp4")) {
        res.setHeader("Content-Type", "video/mp4");
    }

    if (req.getMethod().equalsIgnoreCase("HEAD")) {
        res.setStatus(HttpServletResponse.SC_OK);
        res.setHeader("Accept-Ranges", "bytes");
        res.setContentLength((int) f.length());
        return;
    } else if (req.getMethod().equalsIgnoreCase("GET")) {
        if (req.getHeader("Range") != null) {

            String range = req.getHeader("Range");

            String[] string = range.split("=")[1].split("-");
            long start = Long.parseLong(string[0]);
            long end = string.length == 1 ? f.length() - 1 : Long.parseLong(string[1]);
            long length = end - start + 1;

            res.setStatus(HttpServletResponse.SC_PARTIAL_CONTENT);

            res.setHeader("Accept-Ranges", "bytes");
            res.setHeader("Content-Length", "" + length);
            res.setHeader("Content-Range", "bytes " + start + "-" + end + "/" + f.length());

            RandomAccessFile ras = null;

            try {
                ras = new RandomAccessFile(f, "r");
                ras.seek(start);
                final int chunkSize = 4096;
                byte[] buffy = new byte[chunkSize];
                int nextChunkSize = length > chunkSize ? chunkSize : (int) length;
                long bytesLeft = length;
                while (bytesLeft > 0) {
                    ras.read(buffy, 0, nextChunkSize);
                    res.getOutputStream().write(buffy, 0, nextChunkSize);
                    res.getOutputStream().flush();
                    bytesLeft = bytesLeft - nextChunkSize;
                    nextChunkSize = bytesLeft > chunkSize ? chunkSize : (int) bytesLeft;

                    /*
                     * to simulate lower bandwidth
                     */
                    /*
                    try {
                      Thread.sleep(10);
                    } catch (InterruptedException e) {
                      // TODO Auto-generated catch block
                      e.printStackTrace();
                    }
                    */
                }
            } finally {
                if (ras != null) {
                    ras.close();
                }
            }
            return;
        }
    }

    res.setStatus(HttpServletResponse.SC_OK);
    res.setHeader("Accept-Ranges", "bytes");
    res.setContentLength((int) f.length());
    service(cms, resource, req, res);
}

From source file:org.opencms.main.CmsStaticResourceHandler.java

/**
 * Sets the response headers.<p>/*w w w  . jav a  2  s.  c  om*/
 *
 * @param request the request
 * @param response the response
 * @param filename the file name
 * @param resourceURL the resource URL
 */
protected void setResponseHeaders(HttpServletRequest request, HttpServletResponse response, String filename,
        URL resourceURL) {

    String cacheControl = "public, max-age=0, must-revalidate";
    int resourceCacheTime = getCacheTime(filename);
    if (resourceCacheTime > 0) {
        cacheControl = "max-age=" + String.valueOf(resourceCacheTime);
    }
    response.setHeader("Cache-Control", cacheControl);
    response.setDateHeader("Expires", System.currentTimeMillis() + (resourceCacheTime * 1000));

    // Find the modification timestamp
    long lastModifiedTime = 0;
    URLConnection connection = null;
    try {
        connection = resourceURL.openConnection();
        lastModifiedTime = connection.getLastModified();
        // Remove milliseconds to avoid comparison problems (milliseconds
        // are not returned by the browser in the "If-Modified-Since"
        // header).
        lastModifiedTime = lastModifiedTime - (lastModifiedTime % 1000);
        response.setDateHeader("Last-Modified", lastModifiedTime);

        if (browserHasNewestVersion(request, lastModifiedTime)) {
            response.setStatus(HttpServletResponse.SC_NOT_MODIFIED);
            return;
        }
    } catch (Exception e) {
        // Failed to find out last modified timestamp. Continue without it.
        LOG.debug("Failed to find out last modified timestamp. Continuing without it.", e);
    } finally {
        try {
            if (connection != null) {
                // Explicitly close the input stream to prevent it
                // from remaining hanging
                // http://bugs.sun.com/bugdatabase/view_bug.do?bug_id=4257700
                InputStream is = connection.getInputStream();
                if (is != null) {
                    is.close();
                }
            }
        } catch (Exception e) {
            LOG.info("Error closing URLConnection input stream", e);
        }
    }

    // Set type mime type if we can determine it based on the filename
    String mimetype = OpenCms.getResourceManager().getMimeType(filename, "UTF-8");
    if (mimetype != null) {
        response.setContentType(mimetype);
    }
}

From source file:com.metamesh.opencms.rfs.RfsFileLoader.java

/**
 * @see org.opencms.loader.I_CmsResourceLoader#load(org.opencms.file.CmsObject, org.opencms.file.CmsResource, javax.servlet.http.HttpServletRequest, javax.servlet.http.HttpServletResponse)
 */// w  w w. j  av a2 s . c om
public void load(CmsObject cms, CmsResource resource, HttpServletRequest req, HttpServletResponse res)
        throws IOException, CmsException {

    if (canSendLastModifiedHeader(resource, req, res)) {
        // no further processing required
        return;
    }

    // set response status to "200 - OK" (required for static export "on-demand")
    res.setStatus(HttpServletResponse.SC_OK);
    // set content length header
    res.setContentLength(resource.getLength());

    if (CmsWorkplaceManager.isWorkplaceUser(req)) {
        // prevent caching for Workplace users
        res.setDateHeader(CmsRequestUtil.HEADER_LAST_MODIFIED, System.currentTimeMillis());
        CmsRequestUtil.setNoCacheHeaders(res);
    } else {
        // set date last modified header
        res.setDateHeader(CmsRequestUtil.HEADER_LAST_MODIFIED, resource.getDateLastModified());

        // set "Expires" only if cache control is not already set
        if (!res.containsHeader(CmsRequestUtil.HEADER_CACHE_CONTROL)) {
            long expireTime = resource.getDateExpired();
            if (expireTime == CmsResource.DATE_EXPIRED_DEFAULT) {
                expireTime--;
                // flex controller will automatically reduce this to a reasonable value
            }
            // now set "Expires" header        
            CmsFlexController.setDateExpiresHeader(res, expireTime, m_clientCacheMaxAge);
        }
    }

    service(cms, resource, req, res);
}

From source file:net.brewspberry.front.JFreeGraphServlet.java

/**
 * @see HttpServlet#doGet(HttpServletRequest request, HttpServletResponse
 *      response)/*from   www.jav a  2  s.  c  o m*/
 */
protected void doGet(HttpServletRequest request, HttpServletResponse response)
        throws ServletException, IOException {

    // Set standard HTTP/1.1 no-cache headers.
    response.setHeader("Cache-Control", "private, no-store, no-cache, must-revalidate");

    // Set standard HTTP/1.0 no-cache header.
    response.setHeader("Pragma", "no-cache");

    response.setDateHeader("Expires", 0);

    // If the request has either width or height attributes, the chart will
    // be attribute-sized
    if (request.getParameter("width") != null) {
        try {
            width = Integer.parseInt((String) request.getParameter("width"));
        } catch (Exception e) {
            width = DEFAULT_WIDTH;

        }
    } else {
        width = DEFAULT_WIDTH;
    }
    if (request.getParameter("height") != null) {
        try {
            height = Integer.parseInt((String) request.getParameter("height"));
        } catch (Exception e) {
            height = DEFAULT_HEIGHT;
        }
    }
    // else default sizes are applied
    else {
        height = DEFAULT_HEIGHT;
    }

    JFreeChart chart = null;

    if (request.getParameter("type") != null) {

        String type = request.getParameter("type");
        List<TemperatureMeasurement> tempList = null;

        switch (type) {

        case "etp":

            Long etapeID = null;
            if (request.getParameter("eid") != null) {

                String eid = request.getParameter("eid");

                etapeID = Long.parseLong(eid);
                Etape etape = etapeService.getElementById(etapeID);

                tempList = tmesService.getTemperatureMeasurementByEtape(etape);
                logger.fine("Got " + tempList.size() + " temp measurements for step " + etapeID);
                List<String> probesList = new ArrayList<String>();

                probesList = getDistinctProbes(tempList);
                logger.fine("Got " + probesList.size() + " temp measurements for step " + etapeID);
                response.setContentType("image/png");

                try {
                    chart = generateChartFromTimeSeries(
                            createDataset(parseTemperatureMeasurements(tempList, probesList), false, true),
                            "DS18B20", "Time", "Temperature", true);
                } catch (Exception e) {
                    // TODO Auto-generated catch block
                    e.printStackTrace();
                }

            }

            break;

        case "bra":

            Long brewID = null;
            tempList = null;
            if (request.getParameter("bid") != null) {

                String bid = request.getParameter("bid");

                brewID = Long.parseLong(bid);

                tempList = brassinService.getElementById(brewID).getBra_temperature_measurement();
                logger.fine("Got " + tempList.size() + " temp measurements for brew " + brewID);
                List<String> probesList = new ArrayList<String>();

                probesList = getDistinctProbes(tempList);
                logger.fine("Got " + probesList.size() + " temp measurements for brew " + brewID);
                response.setContentType("image/png");

                try {
                    chart = generateChartFromTimeSeries(
                            createDataset(parseTemperatureMeasurements(tempList, probesList), false, true),
                            "DS18B20", "Time", "Temperature", true);
                } catch (Exception e) {
                    // TODO Auto-generated catch block
                    e.printStackTrace();
                }
            }
            break;

        }
    } else {
        try {
            chart = generateChartFromTimeSeries(
                    createDataset(parseCSVFile(new File(BCHRECTEMP_FIC)), true, false), "DS18B20", "Time",
                    "Temperature", true);

        } catch (Exception e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }

    }
    response.setContentType("image/png");

    OutputStream outputStream = response.getOutputStream();

    try {
        logger.fine("Graph dimensions : " + width + "x" + height);

        ChartUtilities.writeChartAsPNG(outputStream, chart, width, height);
    } catch (Exception e) {
        // TODO Auto-generated catch block
        e.printStackTrace();
    }

}

From source file:org.apache.click.extras.filter.PerformanceFilter.java

/**
 * Set the response "Expires" and "Cache-Control" headers with the given
 * maximum cache duration age in seconds.
 *
 * @param response the response to set the headers in
 * @param maxAgeSeconds the maximum cache duration in seconds
 *//*from   w w  w .  j ava  2 s. co  m*/
protected void setHeaderExpiresCache(HttpServletResponse response, long maxAgeSeconds) {
    long expiresMs = System.currentTimeMillis() + (maxAgeSeconds * 1000);
    response.setDateHeader("Expires", expiresMs);
    response.setHeader("Cache-Control", "max-age=" + maxAgeSeconds);
}

From source file:com.orangeandbronze.jblubble.sample.PersonController.java

@RequestMapping(method = RequestMethod.GET, value = "/{id}/photo")
public void servePhoto(@PathVariable("id") String id, WebRequest webRequest, HttpServletResponse response)
        throws BlobstoreException, IOException {
    Person person = getPersonById(id);/*  ww w . j  ava 2 s . c o  m*/
    if (person != null) {
        BlobKey photoId = person.getPhotoId();
        if (photoId != null) {
            BlobInfo blobInfo = blobstoreService.getBlobInfo(photoId);
            if (webRequest.checkNotModified(blobInfo.getDateCreated().getTime())) {
                return;
            }
            response.setContentType(blobInfo.getContentType());
            // In Servlet API 3.1, use #setContentLengthLong(long)
            response.setContentLength((int) blobInfo.getSize());
            response.setDateHeader("Last-Modified", blobInfo.getDateCreated().getTime());
            // response.addHeader("Cache-Control", "must-revalidate, max-age=3600");
            blobstoreService.serveBlob(photoId, response.getOutputStream());
            return;
        }
    }
    throw new IllegalArgumentException();
}

From source file:com.persistent.cloudninja.controller.TenantTaskListController.java

@RequestMapping(value = "/logout.htm")
public ModelAndView logout(HttpServletRequest request, HttpServletResponse response,
        @CookieValue(value = "CLOUDNINJAAUTH", required = false) String cookie) throws CloudNinjaException {

    if (cookie != null) {
        cookie = null;//from  ww  w .j  a  va 2  s . c  om
        Cookie c = new Cookie("CLOUDNINJAAUTH", null);
        c.setPath("/");
        response.addCookie(c);
        response.setHeader("Cache-Control", "no-cache,no-store");
        response.setHeader("Pragma", "no-cache");
        response.setDateHeader("Expires", -1);
    }
    if (request.getAttribute("cookieNameAttr") != null) {
        request.setAttribute("cookieNameAttr", null);
    }

    return new ModelAndView("logoutsuccess");
}

From source file:org.rhq.enterprise.gui.agentupdate.AgentUpdateServlet.java

private void getDownload(HttpServletRequest req, HttpServletResponse resp)
        throws ServletException, IOException {
    int limit = getDownloadLimit();
    if (limit <= 0) {
        sendErrorAgentUpdateDisabled(resp);
        return;//from  w w  w .ja  v  a  2 s  .  c o  m
    } else if (limit < numActiveDownloads) {
        sendErrorTooManyDownloads(resp);
        return;
    }

    try {
        File agentJar = getAgentUpdateBinaryFile();
        resp.setContentType("application/octet-stream");
        resp.setHeader("Content-Disposition", "attachment; filename=" + agentJar.getName());
        resp.setContentLength((int) agentJar.length());
        resp.setDateHeader("Last-Modified", agentJar.lastModified());

        FileInputStream agentJarStream = new FileInputStream(agentJar);
        try {
            StreamUtil.copy(agentJarStream, resp.getOutputStream(), false);
        } finally {
            agentJarStream.close();
        }
    } catch (Throwable t) {
        log.error("Failed to stream agent jar.", t);
        disableBrowserCache(resp);
        resp.sendError(HttpServletResponse.SC_INTERNAL_SERVER_ERROR, "Failed to stream agent jar");
    }

    return;
}

From source file:com.octo.captcha.module.web.sound.SoundToWavHelper.java

/**
 * retrieve a new SoundCaptcha using SoundCaptchaService and flush it to the response. <br/> Captcha are localized
 * using request locale. <br/>This method returns a 404 to the client instead of the image if the request isn't
 * correct (missing parameters, etc...).. <br/>The log may be null. <br/>
 *
 * @param theRequest  the request//from   w  ww .  j a va2  s .  c  om
 * @param theResponse the response
 * @param log         a commons logger
 * @param service     an SoundCaptchaService instance
 *
 * @throws java.io.IOException if a problem occurs during the jpeg generation process
 */
public static void flushNewCaptchaToResponse(HttpServletRequest theRequest, HttpServletResponse theResponse,
        Log log, SoundCaptchaService service, String id, Locale locale) throws IOException {

    // call the ImageCaptchaService method to retrieve a captcha
    byte[] captchaChallengeAsWav = null;
    ByteArrayOutputStream wavOutputStream = new ByteArrayOutputStream();
    try {
        AudioInputStream stream = service.getSoundChallengeForID(id, locale);

        // call the ImageCaptchaService method to retrieve a captcha

        AudioSystem.write(stream, AudioFileFormat.Type.WAVE, wavOutputStream);
        //AudioSystem.(pAudioInputStream, AudioFileFormat.Type.WAVE, pFile);

    } catch (IllegalArgumentException e) {
        //    log a security warning and return a 404...
        if (log != null && log.isWarnEnabled()) {
            log.warn("There was a try from " + theRequest.getRemoteAddr()
                    + " to render an captcha with invalid ID :'" + id + "' or with a too long one");
            theResponse.sendError(HttpServletResponse.SC_NOT_FOUND);
            return;
        }
    } catch (CaptchaServiceException e) {
        // log and return a 404 instead of an image...
        if (log != null && log.isWarnEnabled()) {
            log.warn(

                    "Error trying to generate a captcha and " + "render its challenge as JPEG", e);
        }
        theResponse.sendError(HttpServletResponse.SC_NOT_FOUND);
        return;
    }
    captchaChallengeAsWav = wavOutputStream.toByteArray();

    // render the captcha challenge as a JPEG image in the response
    theResponse.setHeader("Cache-Control", "no-store");
    theResponse.setHeader("Pragma", "no-cache");
    theResponse.setDateHeader("Expires", 0);

    theResponse.setContentType("audio/x-wav");
    ServletOutputStream responseOutputStream = theResponse.getOutputStream();
    responseOutputStream.write(captchaChallengeAsWav);
    responseOutputStream.flush();
    responseOutputStream.close();
}