Example usage for javax.servlet.http HttpServletResponse setContentLength

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:net.sourceforge.fenixedu.presentationTier.Action.coordinator.thesis.ManageThesisDA.java

public ActionForward downloadJuryReportSheet(ActionMapping mapping, ActionForm actionForm,
        HttpServletRequest request, HttpServletResponse response) throws Exception {
    Thesis thesis = getThesis(request);//from ww w.j  a va 2  s .c o  m

    try {
        ThesisJuryReportDocument document = new ThesisJuryReportDocument(thesis);
        byte[] data = ReportsUtils.exportToProcessedPdfAsByteArray(document);

        response.setContentLength(data.length);
        response.setContentType("application/pdf");
        response.addHeader("Content-Disposition",
                String.format("attachment; filename=%s.pdf", document.getReportFileName()));

        response.getOutputStream().write(data);

        return null;
    } catch (JRException e) {
        addActionMessage("error", request, "student.thesis.generate.juryreport.failed");
        return listThesis(mapping, actionForm, request, response);
    }
}

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From source file:com.wdeanmedical.portal.service.AppService.java

public void getFile(HttpServletRequest request, HttpServletResponse response, ServletContext servletContext,
        String filePath, String fileName) throws Exception {
    String mime = servletContext.getMimeType(fileName);
    if (mime == null) {
        response.setStatus(HttpServletResponse.SC_INTERNAL_SERVER_ERROR);
        return;//w w  w .j a  v a  2  s. c  om
    }
    response.setContentType(mime);
    File file = new File(filePath + fileName);
    response.setContentLength((int) file.length());
    FileInputStream in = new FileInputStream(file);
    OutputStream out = response.getOutputStream();
    byte[] buf = new byte[1024];
    int count = 0;
    while ((count = in.read(buf)) >= 0) {
        out.write(buf, 0, count);
    }
    out.close();
    in.close();
}

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From source file:com.edgenius.wiki.webapp.action.BaseAction.java

/**
 * @param dFile/*from ww w .  ja v  a2 s.c  om*/
 */
protected void downloadFile(String name, File dFile) {
    HttpServletResponse response = getResponse();
    response.setContentType("application/octet-stream");
    response.setHeader("Content-Disposition", "attachment;filename=\"" + name + "\"");
    response.setHeader("Cache-control", "must-revalidate");
    response.addHeader("Content-Description", name);

    InputStream in = null;
    try {
        in = new BufferedInputStream(new FileInputStream(dFile));
        OutputStream out = response.getOutputStream();
        int count = 0;

        int len = 0;
        byte[] ch = new byte[10240];
        while ((len = in.read(ch)) != -1) {
            out.write(ch, 0, len);
            count += len;
        }
        response.setContentLength(count);
    } catch (IOException e) {
        log.error("Exception occured writing out file:" + name, e);
    } finally {
        try {
            if (in != null)
                in.close(); // very important
        } catch (IOException e) {
            log.error("Error Closing file. File already written out - no exception being thrown.", e);
        }
    }
}

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From source file:com.citrix.cpbm.portal.fragment.controllers.AbstractServiceProviderLogoController.java

private void logoResponse(String imagePath, String defaultImagePath, HttpServletResponse response) {
    FileInputStream fileinputstream = null;
    String rootImageDir = config.getValue(Names.com_citrix_cpbm_portal_settings_images_uploadPath);
    if (rootImageDir != null && !rootImageDir.trim().equals("")) {
        try {//from   w ww  .j a v  a 2 s. c  o m
            if (imagePath != null && !imagePath.trim().equals("")) {
                String absoluteImagePath = FilenameUtils.concat(rootImageDir, imagePath);
                fileinputstream = new FileInputStream(absoluteImagePath);
                if (fileinputstream != null) {
                    int numberBytes = fileinputstream.available();
                    byte bytearray[] = new byte[numberBytes];
                    fileinputstream.read(bytearray);
                    response.setContentType("image/" + FilenameUtils.getExtension(imagePath));
                    // TODO:Set Cache headers for browser to force browser to cache to reduce load
                    OutputStream outputStream = response.getOutputStream();
                    response.setContentLength(numberBytes);
                    outputStream.write(bytearray);
                    outputStream.flush();
                    outputStream.close();
                    fileinputstream.close();
                    return;
                }
            }
        } catch (FileNotFoundException e) {
            logger.debug("###File not found in retrieving logo");
        } catch (IOException e) {
            logger.debug("###IO Error in retrieving logo");
        }
    }
    response.setStatus(HttpServletResponse.SC_MOVED_PERMANENTLY);
    response.setHeader("Location", defaultImagePath);
}

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From source file:com.commerce4j.storefront.controllers.CatalogController.java

/**
 * @param request//from   ww w. j  a  v a  2 s  .  c om
 * @param response
 * @throws IOException
 */
public void image(HttpServletRequest request, HttpServletResponse response) throws IOException {

    // browse categories by parent
    String sItemId = request.getParameter("item");
    String sImageIndex = request.getParameter("image");
    if (StringUtils.isNotEmpty(sItemId) && StringUtils.isNotEmpty(sImageIndex)) {
        Integer itemId = new Integer(sItemId);
        Integer imageIndex = new Integer(sImageIndex);

        // verify image existence  
        ItemImageDAO itemImageDAO = (ItemImageDAO) getBean("itemImageDAO");

        // get image from db if exists or not available
        byte[] bytes = (itemImageDAO.exists(itemId, imageIndex))
                ? itemImageDAO.findImageAsBytes(itemId, imageIndex)
                : getNotAvailableImage();

        // retrieve from cache and finally write bytes to response
        response.setContentType("image/jpeg");
        response.setContentLength(bytes.length);
        response.getOutputStream().write(bytes);
    }

}

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From source file:it.jugpadova.controllers.EventController.java

@RequestMapping
public void printBadges(@RequestParam(value = "id", required = false) Long id, HttpServletResponse res) {
    Event event = null;/*from   w  ww  . j  av a 2 s. c o m*/
    if (id != null) {
        event = eventBo.retrieveEvent(id);
        if (event == null) {
            throw new IllegalArgumentException("No event with id " + id);
        }
        eventBo.checkUserAuthorization(event);
    } else {
        // it was requested a simple empty preview
        event = new Event();
        event.setId(-1L);
        event.setTitle("Sample Event");
    }
    OutputStream out = null;
    try {
        byte[] pdfBytes = participantBadgeBo.buildPDFBadges(event);
        out = res.getOutputStream();
        res.setContentType("application/pdf");
        res.setContentLength(pdfBytes.length);
        res.setHeader("Content-Disposition", " attachment; filename=\"" + event.getTitle() + "_badges.pdf\"");
        res.setHeader("Expires", "0");
        res.setHeader("Cache-Control", "must-revalidate, post-check=0, pre-check=0");
        res.setHeader("Pragma", "public");
        out.write(pdfBytes);
        out.flush();
    } catch (Exception ex) {
        logger.error("Can't build PDF badges for " + event.getTitle(), ex);
    } finally {
        if (out != null) {
            try {
                out.close();
            } catch (IOException ioe) {
            }
        }
    }
}

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From source file:com.cloud.bridge.service.EC2RestServlet.java

private static void endResponse(HttpServletResponse response, String content) {
    try {/*from  www.j av a2s. c  om*/
        byte[] data = content.getBytes();
        response.setContentLength(data.length);
        OutputStream os = response.getOutputStream();
        os.write(data);
        os.close();

    } catch (Throwable e) {
        logger.error("Unexpected exception " + e.getMessage(), e);
    }
}

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From source file:com.mywork.framework.util.RemoteHttpUtil.java

/**
 *  JDK???//from  w  w w  .j a v a 2  s.  c  o m
 */

private void fetchContentByJDKConnection(HttpServletResponse response, String contentUrl) throws IOException {

    HttpURLConnection connection = (HttpURLConnection) new URL(contentUrl).openConnection();
    // Socket
    connection.setReadTimeout(TIMEOUT_SECONDS * 1000);
    try {
        connection.connect();

        // ?
        InputStream input;
        try {
            input = connection.getInputStream();
        } catch (FileNotFoundException e) {
            response.sendError(HttpServletResponse.SC_NOT_FOUND, contentUrl + " is not found.");
            return;
        }

        // Header
        response.setContentType(connection.getContentType());
        if (connection.getContentLength() > 0) {
            response.setContentLength(connection.getContentLength());
        }

        // 
        OutputStream output = response.getOutputStream();
        try {
            // byte?InputStreamOutputStream, ?4k.
            IOUtils.copy(input, output);
            output.flush();
        } finally {
            // ??InputStream.
            IOUtils.closeQuietly(input);
        }
    } finally {
        connection.disconnect();
    }
}

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From source file:com.comcast.cmb.common.controller.EndpointServlet.java

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

    String pathInfo = request.getPathInfo();
    String id = pathInfo.substring(pathInfo.lastIndexOf("/") + 1);

    EndpointMetrics metrics = metricsMap.get(id);

    if (metrics != null) {

        byte b[] = generateChart(metrics, id);

        response.setContentLength(b.length);
        response.setContentType("image/jpeg");
        response.getOutputStream().write(b);
        response.flushBuffer();/*  w  ww.j a  va2  s. c  om*/

    } else {
        doOutput(404, response, "EndPoint - Chart", "Page not found");
    }
}

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From source file:cz.zcu.kiv.eegdatabase.webservices.rest.datafile.DataFileServiceImpl.java

/**
 * Method for downloading file from server.
 *
 * @param id       data file identifier/*from  w  w w .j av  a  2s  . c  o m*/
 * @param response HTTP response
 * @throws RestServiceException  error while accessing to file
 * @throws SQLException          error while reading file from db
 * @throws IOException           error while reading file
 * @throws RestNotFoundException no such file on server
 */
@Override
@Transactional(readOnly = true)
public void getFile(int id, HttpServletResponse response)
        throws RestServiceException, SQLException, IOException, RestNotFoundException {
    List<DataFile> dataFiles = experimentDao.getDataFilesWhereId(id);
    DataFile file = null;

    if (dataFiles != null && !dataFiles.isEmpty()) {
        file = dataFiles.get(0);
    }

    if (file == null)
        throw new RestNotFoundException("No file with such id!");

    //if is user member of group, then he has rights to download file
    //basic verification, in future should be extended
    ResearchGroup expGroup = file.getExperiment().getResearchGroup();
    if (!isInGroup(personDao.getLoggedPerson(), expGroup.getResearchGroupId()))
        throw new RestServiceException("User does not have access to this file!");

    // copy it to response's OutputStream
    byte[] data = file.getFileContent().getBytes(1, (int) file.getFileContent().length());
    response.setContentType(file.getMimetype());
    response.setContentLength(data.length);
    response.setHeader("Content-Disposition", "attachment; filename=\"" + file.getFilename() + "\"");
    response.getOutputStream().write(data);
    response.flushBuffer();
}

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