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:com.wavemaker.commons.web.filter.EtagFilter.java

@Override
protected void doFilterInternal(HttpServletRequest request, HttpServletResponse response,
        FilterChain filterChain) throws ServletException, IOException {
    //Disabling etag for ie browser as it is not honouring etag header.
    boolean requestedFromIeBrowser = isRequestFromIeBrowser(request);

    if (request.getRequestURL().indexOf("/services") != -1) {
        logger.debug("Etag Request for url {}, IE browser {}, user-agent {}, servlet Path {} ",
                request.getRequestURL(), requestedFromIeBrowser, request.getHeader("User-Agent"),
                request.getServletPath());
    }/*from  w  ww .ja va 2  s  .  c  o m*/

    //Setting no cache for ie as etag is disabled for it.
    if (requestedFromIeBrowser && (request.getServletPath().startsWith("/services")
            || request.getServletPath().startsWith("/app") || request.getServletPath().startsWith("/pages")
            || request.getServletPath().startsWith("/prefabs") || request.getServletPath().endsWith(".json"))) {
        response.setHeader("Cache-Control", "no-cache, no-store, must-revalidate"); // HTTP 1.1
        response.setHeader("Pragma", "no-cache"); // HTTP 1.0
        response.setDateHeader("Expires", 0); // Proxies.
    }
    if (HttpMethod.GET.name().equals(request.getMethod()) && !requestedFromIeBrowser) {
        response.setHeader("Cache-Control", "max-age=0"); // HTTP 1.1
        super.doFilterInternal(request, response, filterChain);
    } else {
        filterChain.doFilter(request, response);
    }

}

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

/**
 * Gets captcha for login./*w ww.  j  a  va  2 s . c o m*/
 *
 * @param context the specified context
 */
@RequestProcessing(value = "/captcha/login", method = HTTPRequestMethod.GET)
public void getLoginCaptcha(final HTTPRequestContext context) {
    if (null == captchas) {
        loadCaptchas();
    }

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

        final String userId = request.getParameter(Common.NEED_CAPTCHA);
        if (StringUtils.isBlank(userId)) {
            return;
        }

        final JSONObject wrong = LoginProcessor.WRONG_PWD_TRIES.get(userId);
        if (null == wrong) {
            return;
        }

        if (wrong.optInt(Common.WRON_COUNT) < 3) {
            return;
        }

        final PNGRenderer renderer = new PNGRenderer();
        context.setRenderer(renderer);

        final Random random = new Random();
        final int index = random.nextInt(CAPTCHA_COUNT);
        final Image captchaImg = captchas[index];
        final String captcha = captchaImg.getName();
        wrong.put(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.owasp.esapi.reference.DefaultHTTPUtilities.java

/**
 * {@inheritDoc}//from ww w . ja  v  a  2  s . c o m
  *
  * @param response
  */
public void setNoCacheHeaders(HttpServletResponse response) {
    // HTTP 1.1
    response.setHeader("Cache-Control", "no-store, no-cache, must-revalidate");

    // HTTP 1.0
    response.setHeader("Pragma", "no-cache");
    response.setDateHeader("Expires", -1);
}

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From source file:com.astamuse.asta4d.web.builtin.StaticResourceHandler.java

protected Object response(HttpServletRequest request, HttpServletResponse response,
        ServletContext servletContext, StaticFileInfo info, String requiredPath)
        throws FileNotFoundException, IOException {

    if (info == null) {
        return createSimpleHeaderResponse(404);
    }//  w  ww  .  j a va2  s  .c om

    if (Configuration.getConfiguration().isCacheEnable()) {
        long clientTime = retrieveClientCachedTime(request);
        if (clientTime >= info.lastModified) {
            return createSimpleHeaderResponse(304);
        }
    }

    // our header provider is not convenient for date header... hope we can
    // improve it in future
    long cacheTime = decideCacheTime(requiredPath, info.actualPath);
    response.setStatus(200);
    response.setHeader("Content-Type", info.contentType);
    response.setDateHeader("Expires", DateTime.now().getMillis() + cacheTime);
    response.setDateHeader("Last-Modified", info.lastModified);
    response.setHeader("Cache-control", "max-age=" + (cacheTime / 1000));

    // here we do not synchronize threads because we do not matter

    if (info.content == null && info.firstTimeInput != null) {
        // no cache, and we have opened it at first time
        InputStream input = info.firstTimeInput;
        info.firstTimeInput = null;
        return new BinaryDataProvider(input);
    } else if (info.content == null && info.firstTimeInput == null) {
        // no cache
        return new BinaryDataProvider(servletContext, this.getClass().getClassLoader(), info.actualPath);
    } else {
        // should cache
        byte[] data = null;
        data = info.content.get();
        if (data == null) {
            InputStream input = BinaryDataUtil.retrieveInputStreamByPath(servletContext,
                    this.getClass().getClassLoader(), info.actualPath);
            // if we went to here, which means we are not overing the cache size limit, so we do not need to check null.
            data = retrieveBytesFromInputStream(input, info.cacheLimit);
            info.content = new SoftReference<byte[]>(data);
        }
        return new BinaryDataProvider(data);
    }
}

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From source file:com.newatlanta.appengine.servlet.GaeVfsServlet.java

/**
 * If a file is specified, return the file; if a folder is specified, then
 * either return a listing of the folder, or <code>FORBIDDEN</code>, based on
 * configuration./*from   w  ww .j  a v  a2  s.co  m*/
 */
@Override
public void doGet(HttpServletRequest req, HttpServletResponse res) throws ServletException, IOException {

    Path path = Paths.get(req.getRequestURI());
    if (path.notExists()) {
        res.sendError(SC_NOT_FOUND);
        return;
    }

    BasicFileAttributes attrs = readBasicFileAttributes(path);
    if (attrs.isDirectory()) {
        if (dirListingAllowed) {
            res.getWriter().write(getListHTML(path));
            res.flushBuffer();
        } else {
            res.sendError(SC_FORBIDDEN, "Directory listing not allowed");
        }
        return;
    }

    // the request is for a file, return it

    long lastModified = attrs.lastModifiedTime().to(SECONDS) * 1000;
    long ifModifiedSince = req.getDateHeader("If-Modified-Since");
    if (lastModified == ifModifiedSince) {
        res.sendError(SC_NOT_MODIFIED);
        return;
    }
    res.setDateHeader("Last-Modified", lastModified);

    // the servlet MIME type is configurable via web.xml
    String contentType = getServletContext().getMimeType(path.getName().toString());
    if (contentType != null) {
        res.setContentType(contentType);
    }

    // IOUtils.copy() buffers the InputStream internally
    InputStream in = path.newInputStream();
    res.setContentLength(copy(in, res.getOutputStream()));
    in.close();
}

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From source file:org.openxdata.server.servlet.DataExportServlet.java

@Override
protected void doGet(HttpServletRequest request, HttpServletResponse response)
        throws ServletException, IOException {
    String sFormId = request.getParameter("formId");
    String sFromDate = request.getParameter("fromDate");
    String sToDate = request.getParameter("toDate");
    String sUserId = request.getParameter("userId");
    String filename = request.getParameter("filename");

    if (!isValidId(sFormId)) {
        setBadRequest(response, "Missing or wrong parameter formId");
        return;// w  ww  . j  a  v  a2 s .  c om
    }

    Date fromDate = null;
    if (isValidDate(sFromDate)) {
        fromDate = new Date(Long.parseLong(sFromDate));
    }

    Date toDate = null;
    if (isValidDate(sToDate)) {
        toDate = new Date(Long.parseLong(sToDate));
        toDate = DateUtils.addDays(toDate, 1);
    }

    Integer userId = null;
    if (isValidId(sUserId)) {
        userId = Integer.parseInt(sUserId);
    }

    if (isNullOrEmpty(filename)) {
        filename = "dataexport";
    }

    response.setContentType("text/csv");
    response.setCharacterEncoding("UTF-8");
    response.setDateHeader("Expires", -1);
    response.setHeader("Pragma", "no-cache");
    response.addHeader("Cache-Control", "no-cache");
    response.addHeader("Cache-Control", "no-store");
    response.setHeader("Content-Disposition", "attachment; filename=" + filename + ".csv");

    dataExport.export(response.getWriter(), Integer.parseInt(sFormId), fromDate, toDate, userId);
}

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From source file:org.springframework.extensions.webscripts.servlet.mvc.ResourceController.java

protected void applyHeaders(final String path, final HttpServletResponse response, final long contentLength,
        final long lastModified) {
    // determine mimetype
    String mimetype = getServletContext().getMimeType(path);
    if (mimetype == null) {
        String extension = ".bin";
        final int extIndex = path.lastIndexOf('.');
        if (extIndex != -1) {
            extension = path.substring(extIndex);
            mimetype = (String) defaultMimeTypes.get(extension.toLowerCase());
        }//from  ww  w  .  j  ava 2  s  . c  o  m
    }

    // set response headers
    if (mimetype != null && mimetype.startsWith("text/")) {
        // ensure text encoding is applied
        mimetype += ";charset=UTF-8";
    }
    response.setContentType(mimetype);
    response.setHeader(HTTP_HEADER_CONTENT_LENGTH, Long.toString(contentLength));
    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:nl.b3p.gis.viewer.PrintAction.java

public ActionForward image(ActionMapping mapping, DynaValidatorForm dynaForm, HttpServletRequest request,
        HttpServletResponse response) throws Exception {
    String username = null;//from  w  w w. j  a v  a  2  s .c  om
    String password = null;

    GisPrincipal gp = GisPrincipal.getGisPrincipal(request);
    if (gp != null) {
        username = gp.getName();
        password = gp.getPassword();
    }

    CombineImageSettings settings = null;
    String imageId = request.getParameter("imageId");

    if (imageId != null && request.getSession().getAttribute(imageId) != null) {
        settings = (CombineImageSettings) request.getSession().getAttribute(imageId);

        response.setContentType(settings.getMimeType());
        response.setHeader("Content-Disposition", "attachment; filename=\"printvoorbeeld.png\";");
        response.setDateHeader("Expires", System.currentTimeMillis() + (1000 * 60 * 60 * 24));

        String keepAlive = request.getParameter("keepAlive");
        if (keepAlive == null || keepAlive.length() == 0) {
            request.getSession().removeAttribute(imageId);
        }
    }

    if (settings == null) {
        logFile.error("No settings for image found");
        this.addAlternateMessage(mapping, request, null, "No settings for image found");
        return this.getAlternateForward(mapping, request);
    }

    OutputStream os = null;
    try {
        //response.setContentType("text/html;charset=UTF-8");
        os = response.getOutputStream();
        CombineImagesHandler.combineImage(response.getOutputStream(), settings, settings.getMimeType(),
                maxResponseTime, username, password);
    } finally {
        if (os != null) {
            os.close();
        }
    }

    return null;
}

---

From source file:com.tapas.evidence.fe.controller.CaptchaController.java

@RequestMapping("/captcha.jpg")
public void showForm(HttpServletRequest request, HttpServletResponse response) throws Exception {
    byte[] captchaChallengeAsJpeg = null;
    // the output stream to render the captcha image as jpeg into
    ByteArrayOutputStream jpegOutputStream = new ByteArrayOutputStream();
    try {/*from   w  w w  . j a  v  a  2s . c  om*/
        // 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 = request.getSession().getId();
        BufferedImage challenge = captchaService.getImageChallengeForID(captchaId, request.getLocale());

        ImageIO.write(challenge, CAPTCHA_IMAGE_FORMAT, jpegOutputStream);
    } catch (IllegalArgumentException e) {
        response.sendError(HttpServletResponse.SC_NOT_FOUND);
        return;
    } catch (CaptchaServiceException e) {
        response.sendError(HttpServletResponse.SC_INTERNAL_SERVER_ERROR);
        return;
    }

    captchaChallengeAsJpeg = jpegOutputStream.toByteArray();

    // flush it in the response
    response.setHeader("Cache-Control", "no-store");
    response.setHeader("Pragma", "no-cache");
    response.setDateHeader("Expires", 0);
    response.setContentType("image/" + CAPTCHA_IMAGE_FORMAT);

    ServletOutputStream responseOutputStream = response.getOutputStream();
    responseOutputStream.write(captchaChallengeAsJpeg);
    responseOutputStream.flush();
    responseOutputStream.close();
}

---

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