Example usage for javax.servlet.http HttpServletResponse setDateHeader

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

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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.auraframework.impl.adapter.ServletUtilAdapterImpl.java

/**
 * Sets cache timeout to a given value.//from   w ww .  ja v  a 2s.  c  o m
 *
 * This sets several headers to try to ensure that the page will be cached for the given length of time. Of note is
 * the last-modified header, which is set to a day ago so that browsers consider it to be safe.
 *
 * @param response the HTTP response to which we will add headers.
 * @param expiration timeout value in milliseconds.
 */
@Override
public void setCacheTimeout(HttpServletResponse response, long expiration) {
    long now = System.currentTimeMillis();
    response.setHeader(HttpHeaders.VARY, "Accept-Encoding");
    response.setHeader(HttpHeaders.CACHE_CONTROL, String.format("max-age=%s, public", expiration / 1000));
    response.setDateHeader(HttpHeaders.EXPIRES, now + expiration);
    response.setDateHeader(HttpHeaders.LAST_MODIFIED, now - SHORT_EXPIRE);
}

From source file:com.haulmont.cuba.core.controllers.LogDownloadController.java

@RequestMapping(value = "/log/{file:[a-zA-Z0-9\\.\\-_]+}", method = RequestMethod.GET)
public void getLogFile(HttpServletResponse response, @RequestParam(value = "s") String sessionId,
        @RequestParam(value = "full", required = false) Boolean downloadFull,
        @PathVariable(value = "file") String logFileName) throws IOException {
    UserSession userSession = getSession(sessionId, response);
    if (userSession == null)
        return;/*w ww. j a  v  a2 s  . co  m*/

    if (!userSession.isSpecificPermitted("cuba.gui.administration.downloadlogs")) {
        response.sendError(HttpServletResponse.SC_FORBIDDEN);
        return;
    }

    // security check, handle only valid file name
    String filename = FilenameUtils.getName(logFileName);

    try {
        File logFile = logControl.getLogFile(filename);

        response.setHeader("Cache-Control", "no-cache");
        response.setHeader("Pragma", "no-cache");
        response.setDateHeader("Expires", 0);
        response.setHeader("Content-Type", "application/zip");
        response.setHeader("Pragma", "no-cache");

        response.setHeader("Content-Disposition", "attachment; filename=" + filename);

        OutputStream outputStream = null;
        try {
            outputStream = response.getOutputStream();

            if (BooleanUtils.isTrue(downloadFull)) {
                LogArchiver.writeArchivedLogToStream(logFile, outputStream);
            } else {
                LogArchiver.writeArchivedLogTailToStream(logFile, outputStream);
            }
        } catch (RuntimeException | IOException ex) {
            log.error("Unable to download file", ex);
            response.sendError(HttpServletResponse.SC_INTERNAL_SERVER_ERROR);
        } finally {
            IOUtils.closeQuietly(outputStream);
        }

    } catch (LogFileNotFoundException e) {
        response.setStatus(HttpServletResponse.SC_NOT_FOUND);
    }
}

From source file:com.haulmont.cuba.web.controllers.LogDownloadController.java

@RequestMapping(value = "/log/{file:[a-zA-Z0-9\\.\\-_]+}", method = RequestMethod.GET)
public void getLogFile(HttpServletResponse response, @RequestParam(value = "s") String sessionId,
        @RequestParam(value = "full", required = false) Boolean downloadFull,
        @PathVariable(value = "file") String logFileName) throws IOException {
    UserSession userSession = getSession(sessionId, response);
    if (userSession == null)
        return;//  ww w  . j  a va2 s  .com

    if (!userSession.isSpecificPermitted("cuba.gui.administration.downloadlogs")) {
        response.sendError(HttpServletResponse.SC_FORBIDDEN);
        return;
    }

    // security check, handle only valid file name
    String filename = FilenameUtils.getName(logFileName);

    try {
        File logFile = logControl.getLogFile(filename);

        response.setHeader("Cache-Control", "no-cache");
        response.setHeader("Pragma", "no-cache");
        response.setDateHeader("Expires", 0);
        response.setHeader("Content-Type", "application/zip");
        response.setHeader("Pragma", "no-cache");

        response.setHeader("Content-Disposition", "attachment; filename=" + filename + ".zip");

        OutputStream outputStream = null;
        try {
            outputStream = response.getOutputStream();

            if (BooleanUtils.isTrue(downloadFull)) {
                LogArchiver.writeArchivedLogToStream(logFile, outputStream);
            } else {
                LogArchiver.writeArchivedLogTailToStream(logFile, outputStream);
            }
        } catch (RuntimeException | IOException ex) {
            log.error("Unable to download file", ex);
            response.sendError(HttpServletResponse.SC_INTERNAL_SERVER_ERROR);
        } finally {
            IOUtils.closeQuietly(outputStream);
        }

    } catch (LogFileNotFoundException e) {
        response.setStatus(HttpServletResponse.SC_NOT_FOUND);
    }
}

From source file:com.haulmont.cuba.portal.controllers.LogDownloadController.java

@RequestMapping(value = "/log/{file:[a-zA-Z0-9\\.\\-_]+}", method = RequestMethod.GET)
public void getLogFile(HttpServletResponse response, @RequestParam(value = "s") String sessionId,
        @RequestParam(value = "full", required = false) Boolean downloadFull,
        @PathVariable(value = "file") String logFileName) throws IOException {
    UserSession userSession = getSession(sessionId, response);
    if (userSession == null)
        return;/*w  w w.  java2s.  co m*/

    if (!userSession.isSpecificPermitted("cuba.gui.administration.downloadlogs")) {
        response.sendError(HttpServletResponse.SC_FORBIDDEN);
        return;
    }

    // security check, handle only valid file name
    String filename = FilenameUtils.getName(logFileName);

    try {
        File logFile = logControl.getLogFile(filename);

        response.setHeader("Cache-Control", "no-cache");
        response.setHeader("Pragma", "no-cache");
        response.setDateHeader("Expires", 0);
        response.setHeader("Content-Type", "application/zip");
        response.setHeader("Pragma", "no-cache");

        response.setHeader("Content-Disposition", "attachment; filename=" + filename);

        OutputStream outputStream = null;
        try {
            outputStream = response.getOutputStream();

            if (BooleanUtils.isTrue(downloadFull)) {
                LogArchiver.writeArchivedLogToStream(logFile, outputStream);
            } else {
                LogArchiver.writeArchivedLogTailToStream(logFile, outputStream);
            }
        } catch (RuntimeException | IOException ex) {
            log.error("Unable to assemble zipped log file", ex);
            response.sendError(HttpServletResponse.SC_INTERNAL_SERVER_ERROR);
        } finally {
            IOUtils.closeQuietly(outputStream);
        }

    } catch (LogFileNotFoundException e) {
        response.setStatus(HttpServletResponse.SC_NOT_FOUND);
    }
}

From source file:com.sap.dirigible.runtime.registry.RegistryServlet.java

private boolean setCacheHeaders(IEntity entity, HttpServletRequest request, HttpServletResponse response)
        throws IOException {

    boolean cached = false;
    IEntityInformation entityInformation = entity.getInformation();
    String modifiedSinceHeader = request.getHeader(IF_MODIFIED_SINCE_HEADER);

    if ((entityInformation != null)) {
        Calendar lastModified = getCalendar(entityInformation.getModifiedAt());

        if ((!StringUtils.isEmpty(modifiedSinceHeader))) {
            Calendar modifiedSince = getCalendar(DateUtils.parseDate(modifiedSinceHeader));

            if (lastModified.compareTo(modifiedSince) <= 0) {

                Calendar expires = getCalendar(lastModified);
                expires.add(Calendar.MONTH, 1);

                response.setDateHeader(EXPIRES_HEADER, expires.getTimeInMillis());
                response.setStatus(HttpServletResponse.SC_NOT_MODIFIED);

                cached = true;/*from   w w w  .  ja  va  2 s. co m*/
            }
        }
        response.setDateHeader(LAST_MODIFIED_HEADER, lastModified.getTimeInMillis());
    }
    return cached;
}

From source file:com.smartgwt.extensions.fileuploader.server.TestServiceImpl.java

private void processQuery(HttpServletRequest request, HttpServletResponse response) {
    try {/* w  w  w  .  j a va2 s  .  c om*/
        System.out.println("--------------------------------------------");
        for (Enumeration<String> en = request.getParameterNames(); en.hasMoreElements();) {
            String name = en.nextElement();
            System.out.println(name + "=" + request.getParameter(name));
        }
        // these are parameters I pass from my ProjectDataSource on all calls.  Change to meet your needs.
        String context = request.getParameter("context");
        String model = request.getParameter("model");
        String xq = request.getParameter("xq");
        String op = request.getParameter("_operationType");
        response.setContentType("text/xml");
        response.setHeader("Pragma", "No-cache");
        response.setDateHeader("Expires", 0);
        response.setHeader("Cache-Control", "no-cache");

        PrintWriter out = response.getWriter();
        getResponse(out, context, model, xq, op);
        out.flush();
    } catch (Exception e) {
        System.out.println(e.getMessage());
    }

}

From source file:org.nuxeo.theme.html.servlets.Images.java

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

    final String path = request.getPathInfo().substring(1);
    byte[] data = null;
    try {/*  ww w .j av  a2s . c o m*/
        data = Manager.getThemeManager().getImageResource(path);
    } catch (ThemeException e) {
        log.error("Image not found: " + path);
    }
    if (data != null) {
        OutputStream os = response.getOutputStream();
        BufferingServletOutputStream.stopBuffering(os);
        String ext = FileUtils.getFileExtension(path);
        String mimeType = Utils.getImageMimeType(ext);
        response.addHeader("content-type", mimeType);

        // Cache headers
        final String lifetime = "604800"; // 1 week
        final long now = System.currentTimeMillis();
        response.addHeader("Cache-Control", "max-age=" + lifetime);
        response.addHeader("Cache-Control", "must-revalidate");
        response.setDateHeader("Last-Modified", now);
        response.setDateHeader("Expires", now + new Long(lifetime) * 1000L);

        os.write(data);
        os.close();
    }
}

From source file:org.ambraproject.wombat.controller.StaticResourceController.java

/**
 * Serves a .js or .css asset that has already been concatenated and minified. See {@link AssetService} for details on
 * this process./*from ww  w  .ja  v a 2s. c om*/
 *
 * @param filePath the path to the file (relative to the theme)
 * @param response response object
 * @throws IOException
 */
private void serveCompiledAsset(String filePath, HttpServletRequest request, HttpServletResponse response)
        throws IOException {

    // The hash is already included in the compiled asset's filename, so we take advantage
    // of that here and use it as the etag.
    Matcher matcher = COMPILED_ASSET_PATTERN.matcher(filePath);
    if (!matcher.matches()) {
        throw new IllegalArgumentException(filePath + " is not a valid compiled asset path");
    }
    String basename = filePath.substring(COMPILED_NAMESPACE.length());

    // This is a "strong" etag since it's based on a fingerprint of the contents.
    String etag = String.format("\"%s\"", matcher.group(1));
    long lastModified = assetService.getLastModifiedTime(basename);
    if (HttpMessageUtil.checkIfModifiedSince(request, lastModified, etag)) {
        response.setHeader("Etag", etag);
        response.setDateHeader(HttpHeaders.LAST_MODIFIED, lastModified);
        assetService.serveCompiledAsset(basename, response.getOutputStream());
    } else {
        response.setStatus(HttpServletResponse.SC_NOT_MODIFIED);
        response.setHeader("Etag", etag);
    }
}

From source file:it.jugpadova.controllers.JCaptchaController.java

@RequestMapping
public void image(HttpServletRequest req, HttpServletResponse res) throws IOException {
    byte[] captchaChallengeAsJpeg = null;
    // the output stream to render the captcha image as jpeg into
    ByteArrayOutputStream jpegOutputStream = new ByteArrayOutputStream();

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

    // call the ImageCaptchaService getChallenge method
    BufferedImage challenge = captchaService.getImageChallengeForID(captchaId, req.getLocale());

    // a jpeg encoder
    JPEGImageEncoder jpegEncoder = JPEGCodec.createJPEGEncoder(jpegOutputStream);
    jpegEncoder.encode(challenge);//  w  w  w  . j ava 2  s.c  o  m

    captchaChallengeAsJpeg = jpegOutputStream.toByteArray();

    // flush it in the res
    res.setHeader("Cache-Control", "no-store");
    res.setHeader("Pragma", "no-cache");
    res.setDateHeader("Expires", 0);
    res.setContentType("image/jpeg");
    ServletOutputStream resOutputStream = res.getOutputStream();
    resOutputStream.write(captchaChallengeAsJpeg);
    resOutputStream.flush();
    resOutputStream.close();
}

From source file:org.rhq.enterprise.gui.download.DownloadServlet.java

private void download(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
    try {//from  w ww .ja v  a  2  s  . c  o  m
        File downloadDir = getRootDownloadsDir();
        File downloadFile = new File(downloadDir, req.getPathInfo());
        if (!isForbiddenPath(downloadFile, resp)) {
            if (!downloadFile.exists()) {
                disableBrowserCache(resp);
                resp.sendError(HttpServletResponse.SC_NOT_FOUND,
                        "File does not exist: " + downloadFile.getName());
                return;
            }
            resp.setContentType(getMimeType(downloadFile));
            resp.setHeader("Content-Disposition", "attachment; filename=" + downloadFile.getName());
            resp.setContentLength((int) downloadFile.length());
            resp.setDateHeader("Last-Modified", downloadFile.lastModified());

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

    return;
}