Example usage for javax.servlet.http HttpServletResponse setContentLength

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

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Introduction

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

Prototype

public void setContentLength(int len);

Source Link

Document

Sets the length of the content body in the response In HTTP servlets, this method sets the HTTP Content-Length header.

Usage

From source file:de.mpg.escidoc.pubman.viewItem.bean.FileBean.java

/**
 * Prepares the file the user wants to download
 * //from   w  w w . j a v a 2 s.  co  m
 */
public String downloadFile() {

    try {
        LoginHelper loginHelper = (LoginHelper) FacesContext.getCurrentInstance().getApplication()
                .getVariableResolver().resolveVariable(FacesContext.getCurrentInstance(), "LoginHelper");

        String fileLocation = ServiceLocator.getFrameworkUrl() + this.file.getContent();
        String filename = this.file.getName(); // Filename suggested in browser Save As dialog
        filename = filename.replace(" ", "_"); // replace empty spaces because they cannot be procesed by the http-response (filename will be cutted after the first empty space)
        String contentType = this.file.getMimeType(); // For dialog, try
        System.out.println("MIME: " + contentType);

        // application/x-download
        FacesContext facesContext = FacesContext.getCurrentInstance();
        HttpServletResponse response = (HttpServletResponse) facesContext.getExternalContext().getResponse();
        response.setHeader("Content-disposition",
                "attachment; filename=" + URLEncoder.encode(filename, "UTF-8"));
        if (this.file.getDefaultMetadata() != null) {
            response.setContentLength(this.file.getDefaultMetadata().getSize());
        }

        response.setContentType(contentType);
        System.out.println("MIME: " + response.getContentType());

        byte[] buffer = null;
        if (this.file.getDefaultMetadata() != null) {
            try {
                GetMethod method = new GetMethod(fileLocation);
                method.setFollowRedirects(false);
                if (loginHelper.getESciDocUserHandle() != null) {
                    // downloading by account user
                    addHandleToMethod(method, loginHelper.getESciDocUserHandle());
                }

                // Execute the method with HttpClient.
                HttpClient client = new HttpClient();
                ProxyHelper.setProxy(client, fileLocation); //????
                client.executeMethod(method);
                OutputStream out = response.getOutputStream();
                InputStream input = method.getResponseBodyAsStream();
                try {
                    if (this.file.getDefaultMetadata() != null) {
                        buffer = new byte[this.file.getDefaultMetadata().getSize()];
                        int numRead;
                        long numWritten = 0;
                        while ((numRead = input.read(buffer)) != -1) {
                            out.write(buffer, 0, numRead);
                            out.flush();
                            numWritten += numRead;
                        }
                        facesContext.responseComplete();
                    }
                } catch (IOException e1) {
                    logger.debug("Download IO Error: " + e1.toString());
                }
                input.close();
                out.close();
            } catch (FileNotFoundException e) {
                logger.debug("File not found: " + e.toString());
            }
        }
    } catch (Exception e) {
        logger.debug("File Download Error: " + e.toString());
        System.out.println(e.toString());
    }
    return null;
}

From source file:com.janrain.backplane.server.Backplane1Controller.java

@RequestMapping(value = "/admin", method = { RequestMethod.GET, RequestMethod.HEAD })
public ModelAndView admin(HttpServletRequest request, HttpServletResponse response) {

    ServletUtil.checkSecure(request);/*from  w ww  .j  a  v  a  2 s .  c  o m*/
    boolean adminUserExists = true;

    // check to see if an admin record already exists, if it does, do not allow an update
    User admin = DaoFactory.getAdminDAO().get(BackplaneSystemProps.ADMIN_USER);
    if (admin == null) {
        adminUserExists = false;
    }

    if (RequestMethod.HEAD.toString().equals(request.getMethod())) {
        response.setContentLength(0);
    }

    BpServerConfig bpServerConfig = DaoFactory.getConfigDAO().get(BackplaneSystemProps.BPSERVER_CONFIG_KEY);
    if (bpServerConfig == null) {
        bpServerConfig = new BpServerConfig();
    }
    // add it to the L1 cache
    CachedL1.getInstance().setObject(BackplaneSystemProps.BPSERVER_CONFIG_KEY, -1, bpServerConfig);

    ModelAndView view = new ModelAndView("admin");
    view.addObject("adminUserExists", adminUserExists);
    view.addObject("configKey", bpServerConfig.getIdValue());
    view.addObject("debugMode", bpConfig.isDebugMode());
    view.addObject("defaultMessagesMax", bpServerConfig.get(BpServerConfig.Field.DEFAULT_MESSAGES_MAX));

    return view;
}

From source file:de.mpg.mpdl.inge.pubman.web.viewItem.bean.FileBean.java

/**
 * Prepares the file the user wants to download
 * /* ww w .  j  a  v  a2s  .co m*/
 */
public String downloadFile() {

    try {
        LoginHelper loginHelper = (LoginHelper) FacesContext.getCurrentInstance().getApplication()
                .getVariableResolver().resolveVariable(FacesContext.getCurrentInstance(), "LoginHelper");

        String fileLocation = PropertyReader.getFrameworkUrl() + this.file.getContent();
        String filename = this.file.getName(); // Filename suggested in browser Save As dialog
        filename = filename.replace(" ", "_"); // replace empty spaces because they cannot be procesed
                                               // by the http-response (filename will be cutted after
                                               // the first empty space)
        String contentType = this.file.getMimeType(); // For dialog, try
        System.out.println("MIME: " + contentType);

        // application/x-download
        FacesContext facesContext = FacesContext.getCurrentInstance();
        HttpServletResponse response = (HttpServletResponse) facesContext.getExternalContext().getResponse();
        response.setHeader("Content-disposition",
                "attachment; filename=" + URLEncoder.encode(filename, "UTF-8"));
        if (this.file.getDefaultMetadata() != null) {
            response.setContentLength(this.file.getDefaultMetadata().getSize());
        }

        response.setContentType(contentType);
        System.out.println("MIME: " + response.getContentType());

        byte[] buffer = null;
        if (this.file.getDefaultMetadata() != null) {
            try {
                GetMethod method = new GetMethod(fileLocation);
                method.setFollowRedirects(false);
                if (loginHelper.getESciDocUserHandle() != null) {
                    // downloading by account user
                    addHandleToMethod(method, loginHelper.getESciDocUserHandle());
                }

                // Execute the method with HttpClient.
                HttpClient client = new HttpClient();
                ProxyHelper.setProxy(client, fileLocation); // ????
                client.executeMethod(method);
                OutputStream out = response.getOutputStream();
                InputStream input = method.getResponseBodyAsStream();
                try {
                    if (this.file.getDefaultMetadata() != null) {
                        buffer = new byte[this.file.getDefaultMetadata().getSize()];
                        int numRead;
                        long numWritten = 0;
                        while ((numRead = input.read(buffer)) != -1) {
                            out.write(buffer, 0, numRead);
                            out.flush();
                            numWritten += numRead;
                        }
                        facesContext.responseComplete();
                    }
                } catch (IOException e1) {
                    logger.debug("Download IO Error: " + e1.toString());
                }
                input.close();
                out.close();
            } catch (FileNotFoundException e) {
                logger.debug("File not found: " + e.toString());
            }
        }
    } catch (Exception e) {
        logger.debug("File Download Error: " + e.toString());
        System.out.println(e.toString());
    }
    return null;
}

From source file:dk.itst.oiosaml.sp.configuration.ConfigurationHandler.java

public void handleGet(RequestContext context) throws ServletException, IOException {
    HttpServletRequest request = context.getRequest();
    HttpServletResponse response = context.getResponse();
    if (request.getParameter("download") != null) {
        byte[] conf = (byte[]) request.getSession().getAttribute(SESSION_CONFIGURATION);
        if (conf == null) {
            response.sendError(HttpServletResponse.SC_NOT_FOUND, "No configuration available for download");
            return;
        }//from w  w w . ja  v  a2s.  c  o m
        response.setContentType("application/octet-stream");
        response.setContentLength(conf.length);
        response.addHeader("Content-disposition", "attachment; filename=oiosaml.java-config.zip");
        response.getOutputStream().write(conf);
        return;
    }
    if (!checkConfiguration(response))
        return;

    Map<String, Object> params = getStandardParameters(request);

    String res = renderTemplate("configure.vm", params, true);
    sendResponse(response, res);
}

From source file:com.scooter1556.sms.server.service.AdaptiveStreamingService.java

public void sendSubtitleSegment(HttpServletResponse response) throws IOException {
    List<String> segment = new ArrayList<>();
    segment.add("WEBVTT");

    // Write segment to buffer so we can get the content length
    StringWriter segmentWriter = new StringWriter();
    for (String line : segment) {
        segmentWriter.write(line + "\n");
    }/*from w ww .ja  v a  2  s. c om*/

    // Set Header Parameters
    response.reset();
    response.setContentType("text/vtt");
    response.setContentLength(segmentWriter.toString().length());

    // Enable CORS
    response.setHeader(("Access-Control-Allow-Origin"), "*");
    response.setHeader("Access-Control-Allow-Methods", "GET");
    response.setIntHeader("Access-Control-Max-Age", 3600);

    // Write segment out to the client
    response.getWriter().write(segmentWriter.toString());
}

From source file:nz.net.orcon.kanban.controllers.XmlFileController.java

private void generateXml(HttpServletResponse response, String boardId, Collection<Card> cardList)
        throws Exception {
    String xmlFileName = boardId + "-" + Calendar.getInstance().getTime() + ".xml";
    HashMap<String, String> aliases = new HashMap<String, String>();
    aliases.put("Card", "nz.net.orcon.kanban.model.Card");
    xstreamMarshaller.setAliases(aliases);
    XStream xStream = xstreamMarshaller.getXStream();
    xStream.registerConverter(new CardConverter());

    StringBuffer xmlCards = new StringBuffer();
    xmlCards.append("<Cards> \n");
    for (Card card : cardList) {
        xmlCards.append(xStream.toXML(card));
        xmlCards.append("\n");
    }/*  www.ja  va2  s.com*/
    xmlCards.append("</Cards>");

    InputStream in = new ByteArrayInputStream(xmlCards.toString().getBytes("UTF-8"));
    ServletOutputStream out = response.getOutputStream();
    response.setContentLength(xmlCards.length());
    response.setHeader("Content-Disposition", "attachment; filename=\"" + xmlFileName + "\"");

    byte[] outputByte = new byte[4096];
    //copy binary content to output stream
    while (in.read(outputByte, 0, 4096) != -1) {
        out.write(outputByte, 0, 4096);
    }
    in.close();
    out.flush();
    out.close();
}

From source file:be.fedict.eid.applet.service.KmlServlet.java

@Override
protected void doGet(HttpServletRequest request, HttpServletResponse response)
        throws ServletException, IOException {
    LOG.debug("doGet");

    HttpSession httpSession = request.getSession();
    EIdData eIdData = (EIdData) httpSession.getAttribute("eid");

    byte[] document;
    try {//from   w w  w . j a  v  a2  s.  c o  m
        document = this.kmlGenerator.generateKml(eIdData);
    } catch (IOException e) {
        throw new ServletException("KML generator error: " + e.getMessage(), e);
    }

    response.setHeader("Cache-Control", "no-cache, no-store, must-revalidate, max-age=-1"); // http 1.1
    if (false == request.getScheme().equals("https")) {
        // else the download fails in IE
        response.setHeader("Pragma", "no-cache"); // http 1.0
    } else {
        response.setHeader("Pragma", "public");
    }
    response.setDateHeader("Expires", -1);
    response.setHeader("Content-disposition", "attachment");
    response.setContentLength(document.length);

    response.setContentType(KmlLight.MIME_TYPE);
    response.setContentLength(document.length);
    ServletOutputStream out = response.getOutputStream();
    out.write(document);
    out.flush();
}

From source file:cpabe.controladores.UploadDecriptacaoServlet.java

protected void doGet(HttpServletRequest request, HttpServletResponse response)
        throws ServletException, IOException {

    String fileName = request.getParameter("fileName");
    if (fileName == null || fileName.equals("")) {
        throw new ServletException("O nome do arquivo no pode ser null ou vazio.");
    }//from   w  w w  . j  ava  2s .c o  m
    File file = new File(request.getServletContext().getAttribute("FILES_DIR") + File.separator + fileName);
    if (!file.exists()) {
        throw new ServletException("O arquivo desejado no existe no Servidor.");
    }
    System.out.println("File location on server::" + file.getAbsolutePath());
    ServletContext ctx = getServletContext();
    InputStream fis = new FileInputStream(file);
    String mimeType = ctx.getMimeType(file.getAbsolutePath());
    response.setContentType(mimeType != null ? mimeType : "application/octet-stream");
    response.setContentLength((int) file.length());
    response.setHeader("Content-Disposition", "attachment; filename=\"" + fileName + "\"");

    ServletOutputStream os = response.getOutputStream();
    byte[] bufferData = new byte[1024];
    int read = 0;
    while ((read = fis.read(bufferData)) != -1) {
        os.write(bufferData, 0, read);
    }
    os.flush();
    os.close();
    fis.close();
    System.out.println("File downloaded at client successfully");
}

From source file:alpha.portal.webapp.controller.CardFormController.java

/**
 * Gets the payload.//from  w  w w .  j a v  a2  s .  c o m
 * 
 * @param jspCard
 *            the jsp card
 * @param response
 *            the response
 * @return the payload
 * @throws IOException
 *             Signals that an I/O exception has occurred.
 */
@RequestMapping(method = RequestMethod.POST, params = { "payloadGet" })
public String getPayload(final AlphaCard jspCard, final HttpServletResponse response) throws IOException {
    final AlphaCard alphaCard = this.alphaCardManager.get(jspCard.getAlphaCardIdentifier());
    final Payload payload = alphaCard.getPayload();

    if (payload != null) {

        final BufferedInputStream in = new BufferedInputStream(new ByteArrayInputStream(payload.getContent()));

        response.setBufferSize(payload.getContent().length);
        response.setContentType(payload.getMimeType());
        response.setHeader("Content-Disposition", "attachment; filename=\"" + payload.getFilename() + "\"");
        response.setContentLength(payload.getContent().length);

        FileCopyUtils.copy(in, response.getOutputStream());
        in.close();
        response.getOutputStream().flush();
        response.getOutputStream().close();
    }

    final AlphaCardIdentifier identifier = alphaCard.getAlphaCardIdentifier();
    return "redirect:/caseform?caseId=" + identifier.getCaseId() + "&activeCardId=" + identifier.getCardId();
}