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:fr.insalyon.creatis.vip.query.server.rpc.FileDownload.java

@Override
protected void doGet(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {

    User user = (User) req.getSession().getAttribute(CoreConstants.SESSION_USER);
    String queryId = req.getParameter("queryid");
    String path = req.getParameter("path");
    String queryName = req.getParameter("name");
    String tab[] = path.split("/");

    if (user != null && queryId != null && !queryId.isEmpty()) {

        try {//  w ww  .j av  a  2s . c o  m

            String k = new String();

            int l = tab.length;
            for (int i = 0; i < l - 1; i++) {
                k += "//" + tab[i];
            }
            File file = new File(k);
            logger.info("that" + k);
            if (file.isDirectory()) {

                file = new File(k + "/" + tab[l - 1]);

            }
            int length = 0;
            ServletOutputStream op = resp.getOutputStream();
            ServletContext context = getServletConfig().getServletContext();
            String mimetype = context.getMimeType(file.getName());

            logger.info("(" + user.getEmail() + ") Downloading '" + file.getAbsolutePath() + "'.");

            resp.setContentType((mimetype != null) ? mimetype : "application/octet-stream");
            resp.setContentLength((int) file.length());
            //name of the file in servlet download
            resp.setHeader("Content-Disposition", "attachment; filename=\"" + queryName + "_"
                    + getCurrentTimeStamp().toString().replaceAll(" ", "_") + ".txt" + "\"");

            byte[] bbuf = new byte[4096];
            DataInputStream in = new DataInputStream(new FileInputStream(file));

            while ((in != null) && ((length = in.read(bbuf)) != -1)) {
                op.write(bbuf, 0, length);
            }

            in.close();
            op.flush();
            op.close();
        } catch (Exception ex) {
            logger.error(ex);
        }

    }
}

From source file:com.npower.dl.SoftwareDownloadServlet.java

public void doDownloadJAD(HttpServletRequest request, HttpServletResponse response)
        throws ServletException, IOException {
    String requestUri = request.getRequestURI();
    log.info("Download Service: Download Content: uri: " + requestUri);
    String requestUrl = request.getRequestURL().toString();

    String packageID = parserPackageID(requestUri);
    ManagementBeanFactory factory = null;
    try {//w  w  w  .jav  a2 s .  c  o  m
        factory = ManagementBeanFactory.newInstance(EngineConfig.getProperties());
        SoftwareBean bean = factory.createSoftwareBean();
        SoftwarePackage pkg = bean.getPackageByID(Long.parseLong(packageID));
        if (pkg == null) {
            throw new DMException("Could not found download package by package ID: " + packageID);
        }
        if (pkg.getMimeType().equalsIgnoreCase("text/vnd.sun.j2me.app-descriptor")) {
            // Content is JAD
            InputStream ins = pkg.getBinary().getBinaryBlob().getBinaryStream();
            if (pkg.getSize() > 0) {
                response.setContentType(pkg.getMimeType());
                response.setContentLength(pkg.getSize());
                OutputStream out = response.getOutputStream();
                byte[] buf = new byte[1024];
                int len = ins.read(buf);
                while (len > 0) {
                    out.write(buf, 0, len);
                    len = ins.read(buf);
                }
                out.flush();
                //out.close();
                return;
            }
        } else if (pkg.getMimeType().equalsIgnoreCase("application/java-archive")
                || pkg.getMimeType().equalsIgnoreCase("application/java")
                || pkg.getMimeType().equalsIgnoreCase("application/x-java-archive")) {
            // JAR Format, generate a JAD
            File jarFile = File.createTempFile("software_tmp", "jar");
            InputStream ins = pkg.getBinary().getBinaryBlob().getBinaryStream();
            if (pkg.getSize() > 0) {
                OutputStream out = new FileOutputStream(jarFile);
                byte[] buf = new byte[1024];
                int len = ins.read(buf);
                while (len > 0) {
                    out.write(buf, 0, len);
                    len = ins.read(buf);
                }
                out.flush();
                out.close();

                String url4Jar = StringUtils.replace(requestUrl, ".jad", ".jar");
                JADCreator creator = new JADCreator();
                Manifest manifest = creator.getJADManufest(jarFile, url4Jar);
                response.setContentType(pkg.getMimeType());
                manifest.write(response.getOutputStream());

                // Clean temp file
                jarFile.delete();
                return;
            }
        }
        // Return Not Found Code.
        response.sendError(HttpServletResponse.SC_NOT_FOUND);
        return;
    } catch (Exception ex) {
        throw new ServletException(ex);
    } finally {
        if (factory != null) {
            factory.release();
        }
    }
}

From source file:architecture.ee.web.spring.controller.DownloadController.java

@RequestMapping(value = "/image/{fileName}", method = RequestMethod.GET)
@ResponseBody/*from  w  w w .java2 s .c  o m*/
public void handleImageByLink(@PathVariable("fileName") String fileName,
        @RequestParam(value = "width", defaultValue = "0", required = false) Integer width,
        @RequestParam(value = "height", defaultValue = "0", required = false) Integer height,
        HttpServletResponse response) throws IOException {

    log.debug(" ------------------------------------------");
    log.debug("fileName:" + fileName);
    log.debug("width:" + width);
    log.debug("height:" + height);
    log.debug("------------------------------------------");

    try {
        Image image = imageManager.getImageByImageLink(fileName);

        InputStream input;
        String contentType;
        int contentLength;

        if (width > 0 && width > 0) {
            input = imageManager.getImageThumbnailInputStream(image, width, height);
            contentType = image.getThumbnailContentType();
            contentLength = image.getThumbnailSize();
        } else {
            input = imageManager.getImageInputStream(image);
            contentType = image.getContentType();
            contentLength = image.getSize();

        }

        response.setContentType(contentType);
        response.setContentLength(contentLength);
        IOUtils.copy(input, response.getOutputStream());
        response.flushBuffer();

    } catch (NotFoundException e) {
        response.sendError(404);
    }
}

From source file:jp.terasoluna.fw.web.struts.actions.FileDownloadUtil.java

/**
 * uEU_E??[h?B/*from   www  .  ja v a2s .  c om*/
 * @param downloadObject _E??[h??B
 * @param request NGXg?B
 * @param response X|X?B
 *
 * @throws IOException _E??[h?oO????B
 */
public static void download(AbstractDownloadObject downloadObject, HttpServletRequest request,
        HttpServletResponse response, boolean forceDownload) throws IOException {

    // downloadObjectnull???A??
    if (downloadObject == null) {
        if (log.isWarnEnabled()) {
            log.warn("No download object.");
        }
        return;
    }

    // wb_??B
    Map<String, List<String>> additionalHeaders = downloadObject.getAdditionalHeaders();

    // wb_?null???A??
    if (additionalHeaders == null) {
        if (log.isWarnEnabled()) {
            log.warn("Header must not be null.");
        }
        return;
    }

    // wb_??B
    Set<Entry<String, List<String>>> entrySet = additionalHeaders.entrySet();
    for (Entry<String, List<String>> entry : entrySet) {
        String headerName = entry.getKey();
        List<String> headerValues = entry.getValue();

        // wb_?L?[lXgnull???A??
        if (headerValues == null || headerName == null) {
            if (log.isWarnEnabled()) {
                log.warn("Header name and value must not be null.");
            }
            return;
        }
        for (String headerValue : headerValues) {
            // wb_?lnull
            if (headerValue == null) {
                headerValue = "";
            }
            response.addHeader(headerName, headerValue);
        }
    }

    // GR?[fBO?
    String charSet = downloadObject.getCharset();
    if (StringUtils.isNotEmpty(charSet)) {
        response.setCharacterEncoding(downloadObject.getCharset());
    }

    // Reg^Cv?
    String contentType = downloadObject.getContentType();
    if (StringUtils.isNotEmpty(contentType)) {
        response.setContentType(downloadObject.getContentType());
    }

    // f?[^TCY?
    int contentLength = downloadObject.getLengthOfData();
    if (contentLength > 0) {
        response.setContentLength(downloadObject.getLengthOfData());
    }

    // t@C????A??B
    // ?????B
    String name = downloadObject.getName();
    if (name != null) {
        name = encoder.encode(name, request, response);
    } else {
        name = encoder.encode("", request, response);
    }
    setFileName(response, name, forceDownload);

    InputStream inputStream = downloadObject.getStream();
    OutputStream outputStream = null;

    try {
        // _E??[h???s
        outputStream = response.getOutputStream();
        Streams.copy(inputStream, outputStream, false);
    } finally {
        if (inputStream != null) {
            inputStream.close();
        }
        if (outputStream != null) {
            outputStream.flush();
            outputStream.close();
        }
    }

}

From source file:com.opencredo.servlet.BookDisplayCoverController.java

protected ModelAndView handleRequestInternal(HttpServletRequest request, HttpServletResponse response)
        throws IllegalStateException, IOException {

    // set the content type
    response.setContentType(CONTENT_TYPE);

    // get the ID of the book -- set "bad request" if its not a valid integer
    Integer id;/*from ww w  . ja  v a 2 s  .c  om*/
    try {
        id = ServletRequestUtils.getIntParameter(request, "book");
        if (id == null)
            throw new IllegalStateException("must specify the book id");
    } catch (Exception e) {
        response.sendError(HttpServletResponse.SC_BAD_REQUEST, "invalid book");
        return null;
    }

    // get the book from the service
    Book book = bookService.getBook(id);

    // if the book doesn't exist then set "not found"
    if (book == null) {
        response.sendError(HttpServletResponse.SC_NOT_FOUND, "no such book");
        return null;
    }

    // if the book doesn't have a picture, set "not found"
    if (book.getCoverPng() == null) {
        response.sendError(HttpServletResponse.SC_NOT_FOUND, "book has no image");
        return null;
    }

    if (logger.isDebugEnabled())
        logger.debug("returning cover for book " + book.getKey() + " '" + book.getTitle() + "'" + " size: "
                + book.getCoverPng().length + " bytes");

    // send the image
    response.setContentLength(book.getCoverPng().length);
    response.getOutputStream().write(book.getCoverPng());
    response.getOutputStream().flush();

    // we already handled the response
    return null;
}

From source file:com.qcadoo.report.internal.controller.ReportDevelopmentController.java

@RequestMapping(value = "developReport/generate", method = RequestMethod.POST)
public ModelAndView generateReport(@RequestParam(value = L_TEMPLATE) final String template,
        @RequestParam(value = "type") final String type, @RequestParam(value = L_LOCALE) final String locale,
        final HttpServletRequest request, final HttpServletResponse response) {
    if (!showReportDevelopment) {
        return new ModelAndView(new RedirectView("/"));
    }/* w  ww .  j  ava2 s .  c om*/

    List<ReportParameter> params = null;

    try {
        params = getReportParameters(template);
    } catch (Exception e) {
        LOG.error(e.getMessage(), e);
        return showException(L_QCADOO_REPORT_REPORT, e).addObject(L_TEMPLATE, template)
                .addObject("isParameter", true).addObject(L_LOCALE, locale);
    }

    try {
        ReportType reportType = ReportType.valueOf(type.toUpperCase(Locale.ENGLISH));
        Locale reportLocale = new Locale(locale);

        Map<String, Object> parameters = new HashMap<String, Object>();

        for (ReportParameter param : params) {
            param.setValue(request.getParameter("params[" + param.getName() + "]"));
            parameters.put(param.getName(), param.getRawValue());
        }

        byte[] report = reportService.generateReport(template, reportType, parameters, reportLocale);

        response.setContentLength(report.length);
        response.setContentType(reportType.getMimeType());
        response.setHeader("Content-disposition", "attachment; filename=report." + type);
        response.addHeader("Expires", "Tue, 03 Jul 2001 06:00:00 GMT");
        response.addHeader("Cache-Control", "no-store, no-cache, must-revalidate, max-age=0");
        response.addHeader("Cache-Control", "post-check=0, pre-check=0");
        response.addHeader("Pragma", "no-cache");

        OutputStream out = response.getOutputStream();

        try {
            IOUtils.copy(new ByteArrayInputStream(report), out);
        } catch (IOException e) {
            LOG.error(e.getMessage(), e);
            throw new ReportException(ReportException.Type.ERROR_WHILE_COPYING_REPORT_TO_RESPONSE, e);
        }

        out.flush();

        return null;
    } catch (Exception e) {
        LOG.error(e.getMessage(), e);
        return showException(L_QCADOO_REPORT_REPORT, e).addObject(L_TEMPLATE, template)
                .addObject("isParameter", true).addObject(L_PARAMS, params).addObject(L_LOCALE, locale);
    }

}

From source file:de.unirostock.sems.cbarchive.web.servlet.DownloadServlet.java

private void downloadArchive(HttpServletRequest request, HttpServletResponse response, UserManager user,
        String archive) throws IOException {

    // filters for omex extension
    //      ( is just there for the browser to name the downloaded file correctly)
    if (archive.endsWith("." + COMBINEARCHIVE_FILE_EXT))
        // just removes the file extension -> we get the archiveId
        archive = archive.substring(0, archive.length() - (COMBINEARCHIVE_FILE_EXT.length() + 1));

    File archiveFile = null;/*from ww w  . j  a v  a  2s .c o  m*/
    String archiveName = null;
    try {
        archiveFile = user.getArchiveFile(archive);
        archiveName = user.getArchive(archive, false).getName();
    } catch (FileNotFoundException | CombineArchiveWebException e) {
        LOGGER.warn(e, MessageFormat.format(
                "FileNotFound Exception, while handling donwload request for Archive {1} in Workspace {0}",
                user.getWorkingDir(), archive));
        response.sendError(HttpServletResponse.SC_NOT_FOUND, e.getMessage());
        return;
    }

    // set MIME-Type to something downloadable
    response.setContentType("application/octet-stream");

    // set Content-Length
    response.setContentLength((int) archiveFile.length());

    // set the filename of the downloaded file
    response.addHeader("Content-Disposition",
            MessageFormat.format("inline; filename=\"{0}.{1}\"", archiveName, COMBINEARCHIVE_FILE_EXT));

    // print the file to the output stream
    try {
        OutputStream output = response.getOutputStream();
        InputStream input = new FileInputStream(archiveFile);

        // copy the streams
        IOUtils.copy(input, output);

        // flush'n'close
        output.flush();
        output.close();
        input.close();

        response.flushBuffer();
    } catch (IOException e) {
        LOGGER.error(e, MessageFormat.format(
                "IOException, while copying streams by handling donwload request for Archive {1} in Workspace {0}",
                user.getWorkingDir(), archive));
        response.sendError(HttpServletResponse.SC_INTERNAL_SERVER_ERROR, "IOException while sending the file.");
    }
}

From source file:siddur.solidtrust.image.ImageController.java

@RequestMapping(value = "/images/{filename:.+}")
public void serveImage(HttpServletRequest req, HttpServletResponse resp,
        @PathVariable("filename") String filename, @RequestParam(value = "s", required = false) String scope)
        throws IOException {
    String filepath = filename;/*from w  ww . ja  va2  s  .c o  m*/
    if (scope != null) {
        filepath = scope + "/" + filepath;
    }
    //404
    File f = new File(FileSystemUtil.getImageDir(), filepath);
    if (!f.exists()) {
        resp.sendError(HttpServletResponse.SC_NOT_FOUND);
        return;
    }

    //304
    long lastModifiedTimestamp = f.lastModified();
    long ifModifiedSince = req.getDateHeader("If-Modified-Since");
    boolean notModified = (ifModifiedSince >= (lastModifiedTimestamp / 1000 * 1000));
    if (notModified) {
        resp.setStatus(HttpServletResponse.SC_NOT_MODIFIED);
        return;
    } else {
        resp.setDateHeader("Last-Modified", lastModifiedTimestamp);
    }

    //length
    resp.setContentLength((int) f.length());

    //content type
    resp.setContentType("image/jpg");

    //response
    FileCopyUtils.copy(new FileInputStream(f), resp.getOutputStream());
}

From source file:com.krawler.spring.importFunctionality.ImportController.java

public void downloadFileData(HttpServletRequest request, HttpServletResponse response) {
    try {//ww w  .  j  a  v  a 2  s .  c  o  m
        String filename = request.getParameter("filename");
        String storagename = request.getParameter("storagename");
        String filetype = request.getParameter("type");
        String destinationDirectory = storageHandlerImpl.GetDocStorePath();
        destinationDirectory += filetype.equalsIgnoreCase("csv") ? "importplans" : "xlsfiles";
        File intgfile = new File(destinationDirectory + "/" + storagename);
        byte[] buff = new byte[(int) intgfile.length()];

        try {
            FileInputStream fis = new FileInputStream(intgfile);
            int read = fis.read(buff);
        } catch (IOException ex) {
            filename = "file_not_found.txt";
        }

        response.setHeader("Content-Disposition", "attachment; filename=\"" + filename + "\"");
        response.setContentType("application/octet-stream");
        response.setContentLength(buff.length);
        response.getOutputStream().write(buff);
        response.getOutputStream().flush();
    } catch (IOException ex) {
        KrawlerLog.op.warn("Unable To Download File :" + ex.toString());
    } catch (Exception ex) {
        KrawlerLog.op.warn("Unable To Download File :" + ex.toString());
    }

}

From source file:cn.lhfei.fu.web.controller.AdminController.java

@RequestMapping(value = "downloadArchive", method = RequestMethod.GET)
public void downloadArchive(HttpServletRequest request, HttpServletResponse response,
        @RequestParam("id") int id) throws IOException {
    try {//  w w w  . jav  a  2s.co m
        ThesisArchive thesisAtchive = thesisArchiveService.read(id);

        if (null != thesisAtchive) {
            String archivePath = thesisAtchive.getArchivePath();
            String[] separatorPaths = archivePath.split("\\" + File.separator);
            String archiveName = separatorPaths[separatorPaths.length - 1];

            File file = new File(archivePath);
            //String fileName = thesisAtchive.getArchiveName();

            // get your file as InputStream
            InputStream is = new FileInputStream(file);
            response.setContentType("application/image;charset=UTF-8");
            response.setContentLength(new Long(file.length()).intValue());
            response.setHeader("Content-Disposition",
                    "attachment; filename=" + archiveName + "; charset=UTF-8");

            // copy it to response's OutputStream
            org.apache.commons.io.IOUtils.copy(is, response.getOutputStream());
            response.flushBuffer();
        }
    } catch (IOException ex) {
        log.error(ex.getMessage(), ex);
        throw new RuntimeException("IOError writing file to output stream", ex);
    }
}