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.xwiki.resource.servlet.AbstractServletResourceReferenceHandler.java

/**
 * Sets the response headers needed to cache the resource permanently, if the resource can be cached.
 * /*from  w  w  w.j  a va  2  s  .  c om*/
 * @param response the response
 * @param resourceReference the resource that is being served
 */
private void setResponseHeaders(Response response, R resourceReference) {
    // Cache the resource if possible.
    if (response instanceof ServletResponse && isResourceCacheable(resourceReference)) {
        HttpServletResponse httpResponse = ((ServletResponse) response).getHttpServletResponse();
        httpResponse.setHeader(HttpHeaders.CACHE_CONTROL, "public");
        httpResponse.setDateHeader(HttpHeaders.EXPIRES, new Date().getTime() + CACHE_DURATION);
        // Even if the resource is cached permanently, most browsers are still sending a request if the user reloads
        // the page using F5. We send back the "Last-Modified" header in the response so that the browser will send
        // us an "If-Modified-Since" request for any subsequent call for this static resource. When this happens we
        // return a 304 to tell the browser to use its cached version.
        httpResponse.setDateHeader(HttpHeaders.LAST_MODIFIED, new Date().getTime());
    }
}

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From source file:nl.b3p.viewer.stripes.CombineImageActionBean.java

/**
 * Combines the image settings to a new image.
 * @return a image./*from   www  .  j  a v a 2s  .c o m*/
 * @throws Exception 
 */
public Resolution getImage() throws Exception {
    if (imageId == null || imageSettings.get(imageId) == null) {
        throw new Exception("No imageId given");
    }
    //final CombineImageSettings settings = (CombineImageSettings) getContext().getRequest().getSession().getAttribute(imageId);
    final CombineImageSettings settings = imageSettings.get(imageId);
    //if these settings are given then overwrite those in the CombineImageSettings
    if (this.getWidth() != null && this.getWidth() > 0) {
        settings.setWidth(getWidth());
    }
    if (this.getHeight() != null && this.getHeight() > 0) {
        settings.setHeight(getHeight());
    }
    if (this.getBbox() != null) {
        settings.setBbox(getBbox());
    }
    if (this.getGeom() != null) {
        String firstChar = geom.substring(0, 1);
        try {
            int test = Integer.parseInt(firstChar);
            // This is a bounding box, so parse it into a linestring
            String[] tokens = geom.split(",");
            String minx = tokens[0];
            String miny = tokens[1];
            String maxx = tokens[2];
            String maxy = tokens[3];
            String wkt = "LINESTRING(";
            wkt += minx + " " + miny + ", ";
            wkt += maxx + " " + miny + ", ";
            wkt += maxx + " " + maxy + ", ";
            wkt += minx + " " + maxy + ", ";
            wkt += minx + " " + miny + ")";
            this.geom = wkt;
        } catch (NumberFormatException e) {
            // this is not a boundingbox
        }
        CombineImageWkt ciw = new CombineImageWkt(geom);
        ciw.setStrokeWidth(8f);
        if (settings.getWktGeoms() == null) {
            settings.setWktGeoms(new ArrayList());
        }
        settings.getWktGeoms().add(ciw);
    }

    //stream the result.
    StreamingResolution res = new StreamingResolution(settings.getMimeType()) {
        @Override
        public void stream(HttpServletResponse response) throws Exception {
            OutputStream out = response.getOutputStream();
            response.setDateHeader("Expires", System.currentTimeMillis() + (1000 * 60 * 60 * 24));
            CombineImagesHandler.combineImage(out, settings, settings.getMimeType(), maxResponseTime);
        }
    };
    return res;
}

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From source file:biz.webgate.dominoext.poi.component.kernel.CSVProcessor.java

public void generateNewFile(UICSV csvDef, HttpServletResponse httpResponse, FacesContext context) {

    try {// www  .j av a2s.  c  o  m
        // First getting the File

        ByteArrayOutputStream csvBAOS = generateCSV(csvDef, context);

        httpResponse.setContentType("text/csv");
        httpResponse.setHeader("Cache-Control", "no-cache");
        httpResponse.setDateHeader("Expires", -1);
        httpResponse.setContentLength(csvBAOS.size());
        httpResponse.addHeader("Content-disposition",
                "inline; filename=\"" + csvDef.getDownloadFileName() + "\"");
        OutputStream os = httpResponse.getOutputStream();
        csvBAOS.writeTo(os);
        os.close();
    } catch (Exception e) {
        ErrorPageBuilder.getInstance().processError(httpResponse, "Error during CSV-Generation", e);
    }

}

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From source file:org.javarebel.chart.ChartComponentListener.java

@Override
public void beforePhase(PhaseEvent arg0) {
    FacesContext context = arg0.getFacesContext();
    ExternalContext eCtx = context.getExternalContext();

    HttpServletRequest req = (HttpServletRequest) eCtx.getRequest();
    String data_KEY = req.getParameter("data_KEY");
    logger.info("Chart Data Key is " + data_KEY);

    HttpSession session = req.getSession();
    if (data_KEY != null) {
        Object chartData = session.getAttribute(data_KEY);

        if (chartData != null) {

            ChartData data = ChartData.class.cast(chartData);
            logger.info("Chart Type received is " + data.getType());
            IChartGenerator chartGen = ChartGeneratorFactory.getChartGenerator(data.getType());
            logger.info("ChartGenerator in use -> " + chartGen.getClass().getName());
            JFreeChart chart = chartGen.generateChart(data);

            BufferedImage img = chart.createBufferedImage(Integer.valueOf(data.getWidth()),
                    Integer.valueOf(data.getHeight()));
            try {
                HttpServletResponse response = (HttpServletResponse) eCtx.getResponse();
                response.setContentType("image/png");
                response.setHeader("Cache-Control", "no-store");
                response.setHeader("Pragma", "no-cache");
                response.setDateHeader("Expires", 0L);

                ServletOutputStream output = response.getOutputStream();
                ImageIO.write(img, "png", output);

                session.removeAttribute(data_KEY);

                context.responseComplete();
            } catch (Exception e) {
                logger.log(Level.SEVERE, e.getMessage(), e);
                throw new IllegalStateException(e);
            }/*from   ww w  . j  ava  2  s.  co  m*/
        }
    }
}

---

From source file:nl.strohalm.cyclos.utils.ResponseHelper.java

/**
 * Writes a file contents to the response
 *//*  w ww  .j  av  a 2  s .co  m*/
public void writeFile(final HttpServletResponse response, final File file) throws IOException {
    if (file.exists()) {
        response.setContentLength((int) file.length());
        response.setDateHeader("Last-Modified", file.lastModified());
        final InputStream in = new FileInputStream(file);
        try {
            IOUtils.copy(in, response.getOutputStream());
        } finally {
            IOUtils.closeQuietly(in);
        }
    }
}

---

From source file:org.apereo.portal.security.mvc.LoginController.java

/**
 * Process the incoming HttpServletRequest.  Note that this processing occurs after
 * PortalPreAuthenticatedProcessingFilter has run and performed pre-processing.
 * @param request//w w w. ja  va 2s .c  o m
 * @param response
 * @exception ServletException
 * @exception IOException
 */
@RequestMapping
public void service(HttpServletRequest request, HttpServletResponse response)
        throws ServletException, IOException {
    response.setHeader("Pragma", "no-cache");
    response.setHeader("Cache-Control", "no-cache");
    response.setDateHeader("Expires", 0);

    // create the redirect URL, adding fname and args parameters if necessary
    String redirectTarget = null;

    final String refUrl = request.getParameter(REFERER_URL_PARAM);
    final URL redirectLocation = parseLocalRefUrl(request, refUrl);
    if (redirectLocation != null) {
        redirectTarget = redirectLocation.toString();
    }

    if (redirectTarget == null) {
        /* Grab the target functional name, if any, off the login request.
         * Also any arguments for the target. We will pass them  along after authentication.
         */
        String targetFname = request.getParameter("uP_fname");

        if (targetFname == null) {
            final IPortalUrlBuilder defaultUrl = this.portalUrlProvider.getDefaultUrl(request);
            redirectTarget = defaultUrl.getUrlString();
        } else {
            try {
                final IPortalUrlBuilder urlBuilder = this.portalUrlProvider
                        .getPortalUrlBuilderByPortletFName(request, targetFname, UrlType.RENDER);

                Enumeration<String> e = request.getParameterNames();
                while (e.hasMoreElements()) {
                    String paramName = e.nextElement();
                    if (!paramName.equals("uP_fname")) {
                        urlBuilder.addParameter(paramName, request.getParameterValues(paramName));
                    }
                }

                redirectTarget = urlBuilder.getUrlString();
            } catch (IllegalArgumentException e) {
                final IPortalUrlBuilder defaultUrl = this.portalUrlProvider.getDefaultUrl(request);
                redirectTarget = defaultUrl.getUrlString();
            }
        }
    }

    IPerson person = null;

    final Object authError = request.getSession(false).getAttribute(LoginController.AUTH_ERROR_KEY);
    if (authError == null || !((Boolean) authError)) {
        person = this.personManager.getPerson(request);
    }

    if (person == null || !person.getSecurityContext().isAuthenticated()) {
        if (request.getMethod().equals("POST"))
            request.getSession(false).setAttribute(AUTH_ATTEMPTED_KEY, "true");
        // Preserve the attempted username so it can be redisplayed to the user
        String attemptedUserName = request.getParameter("userName");
        if (attemptedUserName != null)
            request.getSession(false).setAttribute(ATTEMPTED_USERNAME_KEY, request.getParameter("userName"));
    }

    final String encodedRedirectURL = response.encodeRedirectURL(redirectTarget);

    if (log.isDebugEnabled()) {
        log.debug("Redirecting to " + redirectTarget);
    }

    response.sendRedirect(encodedRedirectURL);
}

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

private void getVersion(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
    try {// w  w w . j  a v a 2 s .c o  m
        File versionFile = getAgentUpdateVersionFile();
        resp.setContentType("text/plain");
        resp.setDateHeader("Last-Modified", versionFile.lastModified());

        FileInputStream stream = new FileInputStream(versionFile);
        byte[] versionData = StreamUtil.slurp(stream);
        resp.getOutputStream().write(versionData);
    } catch (Throwable t) {
        log.error("Failed to stream version info.", t);
        disableBrowserCache(resp);
        resp.sendError(HttpServletResponse.SC_INTERNAL_SERVER_ERROR, "Failed to stream version info");
    }

    return;
}

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From source file:nl.strohalm.cyclos.utils.ResponseHelper.java

/**
 * Set the response header to use no cache
 *///  w  w  w.  ja va2s.c  o  m
public void setNoCache(final HttpServletResponse response) {
    response.setHeader("Pragma", "No-cache");
    response.setHeader("Cache-Control", "must-revalidate,no-cache,no-store,max-age=0");
    response.setDateHeader("Expires", 1);
}

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From source file:com.nsano.uat.Imtservlet.java

/**
 *
 * @param request/*from   ww w .  j av a2  s. c om*/
 * @param response
 * @throws ServletException , IOException
 */
@Override
public void doPost(HttpServletRequest request, HttpServletResponse response)
        throws ServletException, IOException {
    OutputStream out = response.getOutputStream();

    response.setContentType("text/plain;charset=UTF-8");
    response.setDateHeader("Expires", new Date().getTime()); // Expiration
    // date
    response.setDateHeader("Date", new Date().getTime()); // Date and time
    try {
        // that the
        // message was
        // sent
        out.write(moneytransfer(request).getBytes());
    } catch (JSONException ex) {
        Logger.getLogger(IMTCredit.class.getName()).log(Level.SEVERE, null, ex);
    } catch (NoSuchAlgorithmException ex) {
        Logger.getLogger(Imtservlet.class.getName()).log(Level.SEVERE, null, ex);
    }
    out.flush();
    out.close();
}

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From source file:be.fedict.eid.idp.sp.PhotoServlet.java

@Override
protected void doGet(HttpServletRequest request, HttpServletResponse response)
        throws ServletException, IOException {
    LOG.debug("doGet");
    response.setContentType("image/jpg");
    response.setHeader("Cache-Control", "no-cache, no-store, must-revalidate, max-age=-1"); // http 1.1
    response.setHeader("Pragma", "no-cache, no-store"); // http 1.0
    response.setDateHeader("Expires", -1);
    ServletOutputStream out = response.getOutputStream();
    HttpSession session = request.getSession();

    byte[] photoData = (byte[]) session.getAttribute(PHOTO_SESSION_ATTRIBUTE);

    if (null != photoData) {
        BufferedImage photo = ImageIO.read(new ByteArrayInputStream(photoData));
        if (null == photo) {
            /*//from  w w w .j  av  a2  s  . c  o m
             * In this case we render a photo containing some error message.
             */
            photo = new BufferedImage(140, 200, BufferedImage.TYPE_INT_RGB);
            Graphics2D graphics = (Graphics2D) photo.getGraphics();
            RenderingHints renderingHints = new RenderingHints(RenderingHints.KEY_TEXT_ANTIALIASING,
                    RenderingHints.VALUE_TEXT_ANTIALIAS_ON);
            graphics.setRenderingHints(renderingHints);
            graphics.setColor(Color.WHITE);
            graphics.fillRect(1, 1, 140 - 1 - 1, 200 - 1 - 1);
            graphics.setColor(Color.RED);
            graphics.setFont(new Font("Dialog", Font.BOLD, 20));
            graphics.drawString("Photo Error", 0, 200 / 2);
            graphics.dispose();
            ImageIO.write(photo, "jpg", out);
        } else {
            out.write(photoData);
        }
    }
    out.close();
}

---

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