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.ikon.util.WebUtils.java

/**
 * Prepare to send the file.//from  w ww.j  a  v a  2 s  . co  m
 */
public static void prepareSendFile(HttpServletRequest request, HttpServletResponse response, String fileName,
        String mimeType, boolean inline) throws UnsupportedEncodingException {
    String agent = request.getHeader("USER-AGENT");

    // Disable browser cache
    response.setHeader("Expires", "Sat, 6 May 1971 12:00:00 GMT");
    response.setHeader("Cache-Control", "must-revalidate");
    response.addHeader("Cache-Control", "no-store, no-cache, must-revalidate");
    response.addHeader("Cache-Control", "post-check=0, pre-check=0");
    response.setHeader("Pragma", "no-cache");

    // Set MIME type
    response.setContentType(mimeType);

    if (null != agent && -1 != agent.indexOf("MSIE")) {
        log.debug("Agent: Explorer ({})", request.getServerPort());
        fileName = URLEncoder.encode(fileName, "UTF-8").replaceAll("\\+", " ");

        if (request.getServerPort() == 443) {
            log.debug("HTTPS detected! Apply IE workaround...");
            response.setHeader("Cache-Control", "max-age=1");
            response.setHeader("Pragma", "public");
        }
    } else if (null != agent && -1 != agent.indexOf("Mozilla")) {
        log.debug("Agent: Mozilla");
        fileName = MimeUtility.encodeText(fileName, "UTF-8", "B");
    } else {
        log.debug("Agent: Unknown");
    }

    if (inline) {
        response.setHeader("Content-disposition", "inline; filename=\"" + fileName + "\"");
    } else {
        response.setHeader("Content-disposition", "attachment; filename=\"" + fileName + "\"");
    }
}

From source file:org.openmrs.module.omodexport.util.OmodExportUtil.java

/**
 * Utility method for exporting a set of selected modules. The select modules will be exported
 * in zip file called "modules.zip"/*from   w ww .  j  a va2  s .  com*/
 * 
 * @param moduleId -Dash-separated list of the module Ids
 * @param response
 * @throws IOException
 */
public static void exportSelectedModules(String moduleId, HttpServletResponse response) throws IOException {
    // Split the id string into an array of id's
    String[] moduleIds = moduleId.split("-");
    List<File> files = new ArrayList<File>();
    for (String mId : moduleIds) {
        Module m = ModuleFactory.getModuleById(mId);
        files.add(m.getFile());
    }
    response.setContentType("application/zip");
    response.setHeader("Content-Disposition", "attachment; filename=\"modules.ZIP\"");

    ZipOutputStream out = new ZipOutputStream(response.getOutputStream());

    zipFiles(files, out);
}

From source file:org.openmrs.module.omodexport.util.OmodExportUtil.java

/**
 * Utility method for exporting a module with its dependencies
 * // w  w  w.  j  a v  a  2  s  .c  o m
 * @param module -The module to export. It will be exported with all its dependencies and
 *            compressed in a file called "modules.zip"
 * @param response
 * @throws IOException
 */
public static void exportModuleWithDependecies(Module module, HttpServletResponse response) throws IOException {
    List<File> files = new ArrayList<File>();
    List<String> dependecies = module.getRequiredModules();
    for (String name : dependecies) {
        Module m = ModuleFactory.getModuleByPackage(name);
        files.add(m.getFile());
    }
    files.add(module.getFile());

    response.setContentType("application/zip");
    response.setHeader("Content-Disposition", "attachment; filename=\"modules.ZIP\"");

    ZipOutputStream out = new ZipOutputStream(response.getOutputStream());

    zipFiles(files, out);
}

From source file:ch.rasc.downloadchart.DownloadChartServlet.java

private static void handlePdf(HttpServletResponse response, byte[] imageData, Integer width, Integer height,
        String filename, PdfOptions options) throws IOException {

    response.setContentType("application/pdf");
    response.setHeader("Content-Disposition", "attachment; filename=\"" + filename + ".pdf\";");

    try (PDDocument document = new PDDocument()) {
        PDRectangle format = PDPage.PAGE_SIZE_A4;
        if (options != null) {
            if ("A3".equals(options.format)) {
                format = PDPage.PAGE_SIZE_A3;
            } else if ("A5".equals(options.format)) {
                format = PDPage.PAGE_SIZE_A5;
            } else if ("Letter".equals(options.format)) {
                format = PDPage.PAGE_SIZE_LETTER;
            } else if ("Legal".equals(options.format)) {
                format = new PDRectangle(215.9f * MM_TO_UNITS, 355.6f * MM_TO_UNITS);
            } else if ("Tabloid".equals(options.format)) {
                format = new PDRectangle(279 * MM_TO_UNITS, 432 * MM_TO_UNITS);
            } else if (options.width != null && options.height != null) {
                Float pdfWidth = convertToPixel(options.width);
                Float pdfHeight = convertToPixel(options.height);
                if (pdfWidth != null && pdfHeight != null) {
                    format = new PDRectangle(pdfWidth, pdfHeight);
                }//from  w w w . j  av  a  2s.c  o m
            }
        }

        PDPage page = new PDPage(format);

        if (options != null && "landscape".equals(options.orientation)) {
            page.setRotation(90);
        }

        document.addPage(page);

        BufferedImage originalImage = ImageIO.read(new ByteArrayInputStream(imageData));

        try (PDPageContentStream contentStream = new PDPageContentStream(document, page)) {

            PDPixelMap ximage = new PDPixelMap(document, originalImage);

            Dimension newDimension = calculateDimension(originalImage, width, height);
            int imgWidth = ximage.getWidth();
            int imgHeight = ximage.getHeight();
            if (newDimension != null) {
                imgWidth = newDimension.width;
                imgHeight = newDimension.height;
            }

            Float border = options != null ? convertToPixel(options.border) : null;
            if (border == null) {
                border = 0.0f;
            }

            AffineTransform transform;

            if (page.getRotation() == null) {
                float scale = (page.getMediaBox().getWidth() - border * 2) / imgWidth;
                if (scale < 1.0) {
                    transform = new AffineTransform(imgWidth, 0, 0, imgHeight, border,
                            page.getMediaBox().getHeight() - border - imgHeight * scale);

                    transform.scale(scale, scale);
                } else {
                    transform = new AffineTransform(imgWidth, 0, 0, imgHeight, border,
                            page.getMediaBox().getHeight() - border - imgHeight);
                }

            } else {
                float scale = (page.getMediaBox().getHeight() - border * 2) / imgWidth;
                if (scale < 1.0) {
                    transform = new AffineTransform(imgHeight, 0, 0, imgWidth, imgHeight * scale + border,
                            border);

                    transform.scale(scale, scale);
                } else {
                    transform = new AffineTransform(imgHeight, 0, 0, imgWidth, imgHeight + border, border);
                }

                transform.rotate(1.0 * Math.PI / 2.0);
            }

            contentStream.drawXObject(ximage, transform);

        }

        try {
            document.save(response.getOutputStream());
        } catch (COSVisitorException e) {
            throw new IOException(e);
        }
    }
}

From source file:edu.harvard.med.screensaver.ui.arch.util.JSFUtils.java

/**
 * Performs the necessary steps to return server-side data, provided as an
 * InputStream, to an HTTP client. Must be called within a JSF-enabled servlet
 * environment./*from   w ww .  ja va2 s  .c  om*/
 *
 * @param facesContext the JSF FacesContext
 * @param dataInputStream an InputStream containing the data to send to the HTTP client
 * @param contentLocation set the "content-location" HTTP header to this value, allowing the downloaded file to be named
 * @param mimeType the MIME type of the file being sent
 * @throws IOException
 */
public static void handleUserDownloadRequest(FacesContext facesContext, InputStream dataInputStream,
        String contentLocation, String mimeType) throws IOException {
    HttpServletResponse response = (HttpServletResponse) facesContext.getExternalContext().getResponse();
    if (mimeType == null && contentLocation != null) {
        mimeType = MimetypesFileTypeMap.getDefaultFileTypeMap().getContentType(contentLocation);
    }
    if (mimeType != null) {
        response.setContentType(mimeType);
    }

    // NOTE: the second line does the trick with the filename. leaving first line in for posterity
    response.setHeader("Content-Location", contentLocation);
    response.setHeader("Content-disposition", "attachment; filename=\"" + contentLocation + "\"");

    OutputStream out = response.getOutputStream();
    IOUtils.copy(dataInputStream, out);
    out.close();

    // skip Render-Response JSF lifecycle phase, since we're generating a
    // non-Faces response
    facesContext.responseComplete();
}

From source file:com.lushapp.common.web.utils.WebUtils.java

/**
 * Header./*from   w  ww.j  av a  2s  .c om*/
 */
public static void setNoCacheHeader(HttpServletResponse response) {
    //Http 1.0 header
    response.setDateHeader("Expires", 1L);
    response.addHeader("Pragma", "no-cache");
    //Http 1.1 header
    response.setHeader("Cache-Control", "no-cache, no-store, max-age=0");
}

From source file:com.openkm.util.WebUtils.java

/**
 * Prepare to send the file.//  www  .  j av a2s.c  om
 */
public static void prepareSendFile(HttpServletRequest request, HttpServletResponse response, String fileName,
        String mimeType, boolean inline) throws UnsupportedEncodingException {
    String userAgent = WebUtils.getHeader(request, "user-agent").toLowerCase();

    // Disable browser cache
    response.setHeader("Expires", "Sat, 6 May 1971 12:00:00 GMT");
    response.setHeader("Cache-Control", "must-revalidate");
    response.addHeader("Cache-Control", "no-store, no-cache, must-revalidate");
    response.addHeader("Cache-Control", "post-check=0, pre-check=0");
    response.setHeader("Pragma", "no-cache");

    // Set MIME type
    response.setContentType(mimeType);

    if (userAgent.contains("msie") || userAgent.contains("trident")) {
        log.debug("Agent: Explorer ({})", request.getServerPort());
        fileName = URLEncoder.encode(fileName, "UTF-8").replaceAll("\\+", " ");

        if (request.getServerPort() == 443) {
            log.debug("HTTPS detected! Apply IE workaround...");
            response.setHeader("Cache-Control", "max-age=1");
            response.setHeader("Pragma", "public");
        }
    } else if (userAgent.contains("iphone") || userAgent.contains("ipad")) {
        log.debug("Agent: iPhone - iPad");
        // Do nothing
    } else if (userAgent.contains("android")) {
        log.debug("Agent: Android");
        fileName = URLEncoder.encode(fileName, "UTF-8").replaceAll("\\+", " ");
    } else if (userAgent.contains("mozilla")) {
        log.debug("Agent: Mozilla");
        fileName = MimeUtility.encodeText(fileName, "UTF-8", "B");
    } else {
        log.debug("Agent: Unknown");
    }

    if (inline) {
        response.setHeader("Content-disposition", "inline; filename=\"" + fileName + "\"");
    } else {
        response.setHeader("Content-disposition", "attachment; filename=\"" + fileName + "\"");
    }
}

From source file:com.github.thorqin.webapi.oauth2.OAuthServer.java

public static void responseGetResourceFailed(HttpServletResponse response, OAuthError error,
        String errorDescription, String errorUri) {
    String headContent = "Bearer ";
    headContent += "error=\"" + error.toString().toLowerCase() + "\"";
    if (errorDescription != null)
        headContent += "error_description=\"" + errorDescription + "\"";
    if (errorUri != null)
        headContent += "error_uri=\"" + errorUri + "\"";
    response.setHeader("WWW-Authenticate", headContent);

    switch (error) {
    case INVALID_REQUEST:
        response.setStatus(HttpServletResponse.SC_BAD_REQUEST);
        break;/*w  w  w.jav  a  2  s.  co m*/
    case UNAUTHORIZED_CLIENT:
        response.setStatus(HttpServletResponse.SC_UNAUTHORIZED);
        break;
    case ACCESS_DENIED:
    case UNSUPPORTED_RESPONSE_TYPE:
    case INVALID_SCOPE:
        response.setStatus(HttpServletResponse.SC_FORBIDDEN);
        break;
    case SERVER_ERROR:
        response.setStatus(HttpServletResponse.SC_INTERNAL_SERVER_ERROR);
        break;
    case TEMPORARILY_UNAVAILABLE:
        response.setStatus(HttpServletResponse.SC_SERVICE_UNAVAILABLE);
        break;
    }
}

From source file:ie.wombat.rt.fireeagle.CookieConsumer.java

/**
 * Handle an exception that occurred while processing an HTTP request.
 * Depending on the exception, either send a response, redirect the client
 * or propagate an exception./*from   w  w w .  ja v a  2s.  c o m*/
 */
public static void handleException(Exception e, HttpServletRequest request, HttpServletResponse response,
        OAuthConsumer consumer) throws IOException, ServletException {
    if (e instanceof RedirectException) {
        RedirectException redirect = (RedirectException) e;
        String targetURL = redirect.getTargetURL();
        if (targetURL != null) {
            response.setStatus(HttpServletResponse.SC_MOVED_TEMPORARILY);
            response.setHeader("Location", targetURL);
        }
    } else if (e instanceof OAuthProblemException) {
        OAuthProblemException p = (OAuthProblemException) e;
        String problem = p.getProblem();
        if (consumer != null && RECOVERABLE_PROBLEMS.contains(problem)) {
            try {
                CookieMap cookies = new CookieMap(request, response);
                OAuthAccessor accessor = newAccessor(consumer, cookies);
                getAccessToken(request, cookies, accessor);
                // getAccessToken(request, consumer,
                // new CookieMap(request, response));
            } catch (Exception e2) {
                handleException(e2, request, response, null);
            }
        } else {
            try {
                StringWriter s = new StringWriter();
                PrintWriter pw = new PrintWriter(s);
                e.printStackTrace(pw);
                pw.flush();
                p.setParameter("stack trace", s.toString());
            } catch (Exception rats) {
            }
            response.setStatus(p.getHttpStatusCode());
            response.resetBuffer();
            request.setAttribute("OAuthProblemException", p);
            request.getRequestDispatcher //
            ("/OAuthProblemException.jsp").forward(request, response);
        }
    } else if (e instanceof IOException) {
        throw (IOException) e;
    } else if (e instanceof ServletException) {
        throw (ServletException) e;
    } else if (e instanceof RuntimeException) {
        throw (RuntimeException) e;
    } else {
        throw new ServletException(e);
    }
}

From source file:com.concursive.connect.web.webdav.WebdavManager.java

public static void askForAuthentication(HttpServletResponse res) throws Exception {
    String nonce = DefaultServlet.generateNonce();
    // determine the 'opaque' value which should be returned as-is by the client
    String opaque = DefaultServlet.generateOpaque();
    res.setHeader("WWW-Authenticate", "Digest realm=\"" + WebdavServlet.USER_REALM + "\", " + "nonce=\"" + nonce
            + "\", " + "opaque=\"" + opaque + "\"");
    res.sendError(HttpServletResponse.SC_UNAUTHORIZED);
}