Example usage for javax.servlet.http HttpServletResponse setHeader

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

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Introduction

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

Prototype

public void setHeader(String name, String value);

Source Link

Document

Sets a response header with the given name and value.

Usage

From source file:com.octo.captcha.module.web.image.ImageToJpegHelper.java

/**
 * retrieve a new ImageCaptcha using ImageCaptchaService and flush it to the response.<br/> Captcha are localized
 * using request locale.<br/>/*  w w w. j av  a 2 s  .com*/
 * <p/>
 * 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
 * @param theResponse the response
 * @param log         a commons logger
 * @param service     an ImageCaptchaService instance
 *
 * @throws java.io.IOException if a problem occurs during the jpeg generation process
 */
public static void flushNewCaptchaToResponse(HttpServletRequest theRequest, HttpServletResponse theResponse,
        Log log, ImageCaptchaService service, String id, Locale locale) throws IOException {

    // call the ImageCaptchaService method to retrieve a captcha
    byte[] captchaChallengeAsJpeg = null;
    ByteArrayOutputStream jpegOutputStream = new ByteArrayOutputStream();
    try {
        BufferedImage challenge = service.getImageChallengeForID(id, locale);
        // the output stream to render the captcha image as jpeg into

        ImageIO.write(challenge, "jpg", jpegOutputStream);

    } 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;
        }
    }

    captchaChallengeAsJpeg = jpegOutputStream.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("image/jpeg");
    ServletOutputStream responseOutputStream = theResponse.getOutputStream();
    responseOutputStream.write(captchaChallengeAsJpeg);
    responseOutputStream.flush();
    responseOutputStream.close();
}

From source file:org.osiam.resources.controller.UserController.java

private User setLocationUriAndCreateUserForOutput(HttpServletRequest request, HttpServletResponse response,
        User createdUser) {/* w  w  w.  j av  a 2 s  .  co  m*/
    String requestUrl = request.getRequestURL().toString();
    response.setHeader("Location", requestUrl);
    Meta newMeta = new Meta.Builder(createdUser.getMeta()).setLocation(requestUrl).build();
    return new User.Builder(createdUser).setMeta(newMeta).build();
}

From source file:org.openmrs.module.pmtct.web.view.chart.AbstractChartView.java

/**
 * @see org.springframework.web.servlet.view.AbstractView
 *///w w  w. j  a v  a2  s . c om
@Override
@SuppressWarnings("unchecked")
protected void renderMergedOutputModel(Map model, HttpServletRequest request, HttpServletResponse response)
        throws Exception {
    // Respond as a PNG image
    response.setContentType("image/png");

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

    int width = 400;
    int height = 300;

    JFreeChart chart = createChart(model, request);
    chart.setBackgroundPaint(Color.WHITE);
    chart.getPlot().setOutlineStroke(new BasicStroke(0));
    chart.getPlot().setOutlinePaint(getBackgroundColor());
    chart.getPlot().setBackgroundPaint(getBackgroundColor());
    chart.getPlot().setNoDataMessage("No data available");

    ChartUtilities.writeChartAsPNG(response.getOutputStream(), chart, width, height);
}

From source file:com.buession.cas.web.controller.CaptchaController.java

@Override
protected ModelAndView handleRequestInternal(HttpServletRequest request, HttpServletResponse response)
        throws IOException {
    response.setContentType("image/jpg");
    response.setHeader("Pragma", "no-cache");
    response.setHeader("Cache-Control", "no-store, no-cache, must-revalidate");
    response.setDateHeader("Expires", 0);

    String text = producer.createText();
    captchaService.add(request, text);/* w w  w . j  a v  a 2 s  .  co m*/

    BufferedImage im = producer.createImage(text);
    ServletOutputStream out = response.getOutputStream();
    ImageIO.write(im, "jpg", out);

    try {
        out.flush();
    } finally {
        out.close();
    }

    return null;
}

From source file:no.dusken.aranea.web.control.IssueController.java

public ModelAndView handleRequestInternal(HttpServletRequest request, HttpServletResponse response)
        throws PageNotFoundException {

    // this content does not change that often, allow two hours cache
    response.setHeader("Cache-Control", "max-age=72000");

    Map<String, Object> map = new HashMap<String, Object>();
    map.put("baseImageDir", "/images");

    // LinkedHashMap maintains order...
    Map<Integer, Collection> issueMap = new LinkedHashMap<Integer, Collection>();
    int year = 0;
    List<Issue> issues;//from w ww.  ja  v a 2s .c  o m
    if (request.getParameter("year") != null) {
        try {
            year = ServletRequestUtils.getIntParameter(request, "year");
            issues = issueService.getIssuesPublished(year);
            if (issues == null || issues.size() == 0) {
                //Throwing exception so this can be threated as a 404 error on a higher level
                throw new PageNotFoundException("Issue in year " + year);
            }
            issueMap.put(year, issues);
        } catch (ServletRequestBindingException e) {
            log.info("Unable to get section name from request", e);
        }
    } else {
        // defaulting to all years
        year = (new GregorianCalendar()).get(GregorianCalendar.YEAR);
        issues = issueService.getIssuesPublished(year);
        issueMap.put(year, issues);
        // get all previous years
        do {
            year = year - 1;
            issues = issueService.getIssuesPublished(year);
            if (issues != null && issues.size() > 0) {
                issueMap.put(year, issues);
            }
        } while (issues != null && issues.size() > 0);

    }
    map.put("issueMap", issueMap);
    map.put("year", year);
    return new ModelAndView("no/dusken/aranea/base/web/pdf/view", map);
}

From source file:edu.stanford.epad.common.util.EPADFileUtils.java

public static void sendFile(HttpServletRequest httpRequest, HttpServletResponse httpResponse, File file,
        String fileName, boolean download) throws Exception {
    InputStream is = null;//from w  w w.  ja v  a2  s  .  co  m
    try {
        is = new BufferedInputStream(new FileInputStream(file));
        String mimeType = URLConnection.guessContentTypeFromStream(is);
        httpResponse.setContentType(mimeType);
        if (download)
            httpResponse.setHeader("Content-disposition", "attachment;filename=" + fileName);
        httpResponse.setHeader("pragma", "no-cache");
        OutputStream outStream = null;
        String encoding = null;
        if (httpRequest != null)
            encoding = httpRequest.getHeader("Accept-Encoding");

        if (false && encoding != null && encoding.indexOf("gzip") != -1) {
            httpResponse.setHeader("Content-Encoding", "gzip");
            outStream = new GZIPOutputStream(httpResponse.getOutputStream());
        } else if (false && encoding != null && encoding.indexOf("compress") != -1) {
            httpResponse.setHeader("Content-Encoding", "compress");
            outStream = new ZipOutputStream(httpResponse.getOutputStream());
        } else {
            outStream = httpResponse.getOutputStream();
        }
        int chunk = 1024;

        byte[] buffer = new byte[chunk];
        int length = -1;
        int i = 0;

        while ((length = is.read(buffer)) != -1) {
            outStream.write(buffer, 0, length);
            if (length < chunk)
                break;
        }
        is.close();
        is = null;
    } finally {
        if (is != null)
            is.close();
    }
}

From source file:com.parleys.server.frontend.web.ipad.filters.LoginFilter.java

@Override
public void doFilter(final ServletRequest req, final ServletResponse response, final FilterChain chain)
        throws IOException {
    final HttpServletResponse res = (HttpServletResponse) response;
    final PrintWriter writer = res.getWriter();
    res.setStatus(HttpServletResponse.SC_OK);
    res.setHeader("Cache-Control", "must-revalidate");
    res.setHeader("Expires", "Fri, 30 Oct 1998 14:19:41 GMT");
    try {/*  ww  w. j a  v a  2  s.com*/
        final String username = req.getParameter("username");
        final String password = req.getParameter("password");
        if (StringUtils.isNotBlank(username) && StringUtils.isNotBlank(password)) {
            final ParleysService bean = applicationContext.getBean(ParleysService.class);
            final Long userId = bean.getUserId(username, password);

            final String usernameAndPassword = username + ";" + password;
            final String encrypted = AESEncrypter.INSTANCE.encrypt(usernameAndPassword);
            final Cookie rememberMeCookie = new Cookie(PARLEYS_REMEMBER_ME_IPAD, encrypted);
            rememberMeCookie.setMaxAge(3600 * 24 * 7 * 26); // A half year
            res.addCookie(rememberMeCookie);

            writeUserId(writer, userId);
        } else {
            writeError(writer);
        }
    } catch (Exception e) {
        writeError(writer);
    }
}

From source file:com.marklogic.samplestack.web.security.SamplestackSecurityFilters.java

@Override
/**/*  ww w .jav  a 2 s .  co m*/
 * Hooks into Spring Security filter mechanism to manipulate
 * headers as needed.
 */
protected void doFilterInternal(HttpServletRequest request, HttpServletResponse response,
        FilterChain filterChain) throws ServletException, IOException {

    CsrfToken token = (CsrfToken) request.getAttribute("_csrf");
    if (token != null) {
        response.setHeader("X-CSRF-HEADER", token.getHeaderName());
        response.setHeader("X-CSRF-PARAM", token.getParameterName());
        response.setHeader(token.getHeaderName(), token.getToken());
    }
    response.setHeader("Access-Control-Allow-Origin", "*");
    response.setHeader("Access-Control-Allow-Methods", "POST, PUT, GET, OPTIONS, DELETE");
    response.setHeader("Access-Control-Max-Age", "3600");
    response.setHeader("Access-Control-Allow-Headers", "x-requested-with, content-type");
    filterChain.doFilter(request, response);

}

From source file:au.com.iglooit.shar.servlet.FileServlet.java

@Override
protected void doOptions(HttpServletRequest req, HttpServletResponse resp)
        throws ServletException, IOException {
    // pre-flight request processing
    resp.setHeader("Access-Control-Allow-Origin", "*");
    resp.setHeader("Access-Control-Allow-Methods", "GET, POST, OPTIONS");
    resp.setHeader("Access-Control-Allow-Headers", "Content-Type");
}

From source file:fi.hoski.web.forms.PaymentServlet.java

/**
 * Processes requests for both HTTP// w  ww .j  ava2s.  co  m
 * <code>GET</code> and
 * <code>POST</code> methods.
 *
 * @param request servlet request
 * @param response servlet response
 * @throws ServletException if a servlet-specific error occurs
 * @throws IOException if an I/O error occurs
 */
protected void processRequest(HttpServletRequest request, HttpServletResponse response)
        throws ServletException, IOException {
    response.setHeader("Cache-Control", "no-cache"); // input comes from referrer
    response.setContentType("application/json");
    JSONObject json = new JSONObject();
    JSONArray jsonArray = new JSONArray();
    try {
        String referer = request.getHeader("referer");
        log("referer=" + referer);
        if (referer != null) {
            int i1 = referer.indexOf("ancestor=");
            if (i1 != -1) {
                String ancestor = null;
                int i2 = referer.indexOf("&", i1);
                if (i2 != -1) {
                    ancestor = referer.substring(i1 + 9, i2);
                } else {
                    ancestor = referer.substring(i1 + 9);
                }
                Key raceEntryKey = KeyFactory.stringToKey(ancestor);
                BankingBarcode barcode = races.getBarcode(raceEntryKey);
                if (barcode != null) {
                    for (Map.Entry<String, Object> e : barcode.getMetaData().entrySet()) {
                        json.put(e.getKey(), e.getValue());
                    }
                    char[] bars = Code128.encode(barcode.toString());
                    int width = 0;
                    for (int cc : bars) {
                        width += cc;
                        jsonArray.put(cc);
                    }
                    json.put("barwidth", width);
                    json.put("bars", jsonArray);
                }
            }
        }
        json.write(response.getWriter());
    } catch (EntityNotFoundException ex) {
        throw new ServletException(ex);
    } catch (JSONException ex) {
        throw new ServletException(ex);
    } catch (CharNotInCodesetException ex) {
        throw new ServletException(ex);
    } finally {
    }
}