Example usage for javax.servlet.http HttpServletResponse 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:org.b3log.solo.processor.CaptchaProcessor.java

/**
 * Gets captcha.//from w w w  .j av a 2s. c om
 * 
 * @param context the specified context
 */
@RequestProcessing(value = "/captcha.do", method = HTTPRequestMethod.GET)
public void get(final HTTPRequestContext context) {
    final PNGRenderer renderer = new PNGRenderer();

    context.setRenderer(renderer);

    if (null == captchas) {
        loadCaptchas();
    }

    try {
        final HttpServletRequest request = context.getRequest();
        final HttpServletResponse response = context.getResponse();

        final Random random = new Random();
        final int index = random.nextInt(CAPTCHA_COUNT);
        final Image captchaImg = captchas[index];
        final String captcha = captchaImg.getName();

        final HttpSession httpSession = request.getSession(false);

        if (null != httpSession) {
            LOGGER.log(Level.DEBUG, "Captcha[{0}] for session[id={1}]",
                    new Object[] { captcha, httpSession.getId() });
            httpSession.setAttribute(CAPTCHA, captcha);
        }

        response.setHeader("Pragma", "no-cache");
        response.setHeader("Cache-Control", "no-cache");
        response.setDateHeader("Expires", 0);

        renderer.setImage(captchaImg);
    } catch (final Exception e) {
        LOGGER.log(Level.ERROR, e.getMessage(), e);
    }
}

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From source file:org.auraframework.impl.adapter.ServletUtilAdapterImpl.java

/**
 * Tell the browser to not cache./*from w  w  w . ja  v a  2  s .  c o m*/
 *
 * This sets several headers to try to ensure that the page will not be cached. Not sure if last modified matters
 * -goliver
 *
 * @param response the HTTP response to which we will add headers.
 */
@Override
public void setNoCache(HttpServletResponse response) {
    long past = System.currentTimeMillis() - LONG_EXPIRE;
    response.setHeader(HttpHeaders.CACHE_CONTROL, "no-cache, no-store");
    response.setHeader(HttpHeaders.PRAGMA, "no-cache");
    response.setDateHeader(HttpHeaders.EXPIRES, past);
    response.setDateHeader(HttpHeaders.LAST_MODIFIED, past);
}

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From source file:com.haulmont.restapi.controllers.FileDownloadController.java

@GetMapping("/{fileDescriptorId}")
public void downloadFile(@PathVariable String fileDescriptorId,
        @RequestParam(required = false) Boolean attachment, HttpServletResponse response) {
    UUID uuid;//www  .  j  a  v a  2s . c  o  m
    try {
        uuid = UUID.fromString(fileDescriptorId);
    } catch (IllegalArgumentException e) {
        throw new RestAPIException("Invalid entity ID",
                String.format("Cannot convert %s into valid entity ID", fileDescriptorId),
                HttpStatus.BAD_REQUEST);
    }
    LoadContext<FileDescriptor> ctx = LoadContext.create(FileDescriptor.class).setId(uuid);
    FileDescriptor fd = dataService.load(ctx);
    if (fd == null) {
        throw new RestAPIException("File not found", "File not found. Id: " + fileDescriptorId,
                HttpStatus.NOT_FOUND);
    }

    try {
        response.setHeader("Cache-Control", "no-cache");
        response.setHeader("Pragma", "no-cache");
        response.setDateHeader("Expires", 0);
        response.setHeader("Content-Type", getContentType(fd));
        response.setHeader("Content-Disposition", (BooleanUtils.isTrue(attachment) ? "attachment" : "inline")
                + "; filename=\"" + fd.getName() + "\"");

        downloadFromMiddlewareAndWriteResponse(fd, response);
    } catch (Exception e) {
        log.error("Error on downloading the file {}", fileDescriptorId, e);
        throw new RestAPIException("Error on downloading the file", "", HttpStatus.INTERNAL_SERVER_ERROR);
    }
}

---

From source file:com.medallia.spider.SpiderServlet.java

/** serve static resources, e.g. images and css that do not have any dynamic component */
private boolean serveStatic(String uri, HttpServletResponse res) throws IOException {
    StaticResource staticResource = staticResourceLookup.findStaticResource(uri);
    if (staticResource != null) {
        if (staticResource.exists()) {
            res.setHeader("Content-Type", staticResource.getMimeType());
            res.setDateHeader("Date", boot.getTime());
            HttpHeaders.addCacheForeverHeaders(res);
            staticResource.copyTo(res.getOutputStream());
        } else {/*  w w  w .  j  a  v a2  s. c  o  m*/
            res.sendError(404);
            log.warn("Requested resource not found: " + uri);
        }
        return true;
    } else {
        return false;
    }
}

---

From source file:org.granite.grails.web.GrailsWebSWFServlet.java

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

    request.setAttribute(GrailsApplicationAttributes.REQUEST_SCOPE_ID, grailsAttributes);

    // Get the name of the Groovy script (intern the name so that we can lock on it)
    String pageName = "/swf" + request.getServletPath();
    Resource requestedFile = getResourceForUri(pageName);
    File swfFile = requestedFile.getFile();
    if (swfFile == null || !swfFile.exists()) {
        response.sendError(404, "\"" + pageName + "\" not found.");
        return;/*from  w  w w  .  j a v a  2s  . c  o  m*/
    }
    response.setContentType("application/x-shockwave-flash");
    response.setContentLength((int) swfFile.length());
    response.setBufferSize((int) swfFile.length());
    response.setDateHeader("Expires", 0);

    FileInputStream is = null;
    FileChannel inChan = null;
    try {
        is = new FileInputStream(swfFile);
        OutputStream os = response.getOutputStream();
        inChan = is.getChannel();
        long fSize = inChan.size();
        MappedByteBuffer mBuf = inChan.map(FileChannel.MapMode.READ_ONLY, 0, fSize);
        byte[] buf = new byte[(int) fSize];
        mBuf.get(buf);
        os.write(buf);
    } finally {
        if (is != null) {
            IOUtils.closeQuietly(is);
        }
        if (inChan != null) {
            try {
                inChan.close();
            } catch (IOException ignored) {
            }
        }
    }
}

---

From source file:com.octo.captcha.module.acegi.JCaptchaImageController.java

public ModelAndView handleRequest(HttpServletRequest httpServletRequest, HttpServletResponse response)
        throws Exception {
    byte[] captchaChallengeAsJpeg = null;

    ByteArrayOutputStream jpegOutputStream = new ByteArrayOutputStream();

    //get the session id that will identify the generated captcha.
    //the same id must be used to validate the response, the session id is a good candidate!
    String captchaId = httpServletRequest.getSession().getId();

    BufferedImage challenge = imageCaptchaService.getImageChallengeForID(captchaId,
            httpServletRequest.getLocale());

    JPEGImageEncoder jpegEncoder = JPEGCodec.createJPEGEncoder(jpegOutputStream);
    jpegEncoder.encode(challenge);/*from   w w  w . ja  v a2s . c om*/

    captchaChallengeAsJpeg = jpegOutputStream.toByteArray();

    // configure cache  directives
    response.setHeader("Cache-Control", "no-store");
    response.setHeader("Pragma", "no-cache");
    response.setDateHeader("Expires", 0);
    //flush content in the response
    response.setContentType("image/jpeg");
    ServletOutputStream responseOutputStream = response.getOutputStream();
    responseOutputStream.write(captchaChallengeAsJpeg);
    responseOutputStream.flush();
    responseOutputStream.close();
    return null;
}

---

From source file:org.opengeo.gsr.core.controller.ImageResourceController.java

protected void writeHeaders(File imageFile, HttpServletResponse response) {

    // determine mimetype
    String imagePath = imageFile.getPath();
    String mimetype = getServletContext().getMimeType(imagePath);
    if (mimetype == null) {
        final int extIndex = imagePath.lastIndexOf('.');
        if (extIndex != -1) {
            String extension = imagePath.substring(extIndex);
            mimetype = (String) defaultMimeTypes.get(extension.toLowerCase());
        }//from w  w w.j a  v  a 2  s  .c  o m
    }

    long length = imageFile.length();
    long lastModified = imageFile.lastModified();

    response.setContentType(mimetype);
    response.setHeader(HTTP_HEADER_CONTENT_LENGTH, Long.toString(length));
    if (lastModified != 0) {
        response.setHeader(HTTP_HEADER_ETAG, '"' + Long.toString(lastModified) + '"');
        response.setDateHeader(HTTP_HEADER_LAST_MODIFIED, lastModified);
    }
    if (!response.containsHeader(HTTP_HEADER_CACHE_CONTROL)) {
        response.setHeader(HTTP_HEADER_CACHE_CONTROL, "max-age=86400");
    }
}

---

From source file:org.opencms.loader.CmsDumpLoader.java

/**
 * @see org.opencms.loader.I_CmsResourceLoader#load(org.opencms.file.CmsObject, org.opencms.file.CmsResource, javax.servlet.http.HttpServletRequest, javax.servlet.http.HttpServletResponse)
 *//*  ww w  .j a  v  a 2s .  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;
    }

    // make sure we have the file contents available
    CmsFile file = cms.readFile(resource);

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

    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, file.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, file, req, res);
}

---

From source file:org.b3log.symphony.processor.CaptchaProcessor.java

/**
 * Gets captcha.//from  w w  w. j  ava2s  .c  o  m
 *
 * @param context the specified context
 */
@RequestProcessing(value = "/captcha", method = HTTPRequestMethod.GET)
public void get(final HTTPRequestContext context) {
    final PNGRenderer renderer = new PNGRenderer();

    context.setRenderer(renderer);

    if (null == captchas) {
        loadCaptchas();
    }

    try {
        final HttpServletRequest request = context.getRequest();
        final HttpServletResponse response = context.getResponse();

        final Random random = new Random();
        final int index = random.nextInt(CAPTCHA_COUNT);
        final Image captchaImg = captchas[index];
        final String captcha = captchaImg.getName();

        final HttpSession httpSession = request.getSession(false);

        if (null != httpSession) {
            LOGGER.log(Level.DEBUG, "Captcha[{0}] for session[id={1}]",
                    new Object[] { captcha, httpSession.getId() });
            httpSession.setAttribute(CAPTCHA, captcha);
        }

        response.setHeader("Pragma", "no-cache");
        response.setHeader("Cache-Control", "no-cache");
        response.setDateHeader("Expires", 0);

        renderer.setImage(captchaImg);
    } catch (final Exception e) {
        LOGGER.log(Level.ERROR, e.getMessage(), e);
    }
}

---

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

@Override
protected void doGet(HttpServletRequest request, HttpServletResponse response)
        throws ServletException, IOException {
    String pathInfo = request.getPathInfo();
    if (pathInfo == null) {
        pathInfo = "/";
    }/*from   www.j a  v  a  2 s  .  c  o  m*/
    LOGGER.debug("GET {}{}", PATH, pathInfo);
    if ("/create".equals(pathInfo)) {
        RequestDispatcher requestDispatcher = request.getRequestDispatcher("/WEB-INF/views/uploads/create.jsp");
        requestDispatcher.forward(request, response);
    } else if (pathInfo.length() > 1) {
        BlobKey blobKey = new BlobKey(pathInfo.substring(1));
        BlobInfo blobInfo = blobstoreService.getBlobInfo(blobKey);
        response.setContentType(blobInfo.getContentType());
        // In Servlet API 3.1, use #setContentLengthLong(long)
        response.setContentLength((int) blobInfo.getSize());
        response.setDateHeader("Last-Modified", blobInfo.getDateCreated().getTime());
        blobstoreService.serveBlob(blobKey, response.getOutputStream());
    } else {
        // else show links to blobs that were previously uploaded (if any)
        RequestDispatcher requestDispatcher = request.getRequestDispatcher("/WEB-INF/views/uploads/index.jsp");
        List<BlobInfo> blobInfos = new LinkedList<>();
        for (BlobKey blobKey : blobKeys) {
            blobInfos.add(blobstoreService.getBlobInfo(blobKey));
        }
        request.setAttribute("blobstoreService", blobstoreService);
        request.setAttribute("blobKeys", blobKeys);
        request.setAttribute("blobInfos", blobInfos);
        requestDispatcher.forward(request, response);
    }
}

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