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:controller.LoadImageServlet.java

/**
 * Handles the HTTP <code>GET</code> method.
 *
 * @param request servlet request//from  w  w  w .  j a va 2 s  . c om
 * @param response servlet response
 * @throws ServletException if a servlet-specific error occurs
 * @throws IOException if an I/O error occurs
 */
@Override
protected void doGet(HttpServletRequest request, HttpServletResponse response)
        throws ServletException, IOException {
    String iid = request.getParameter("param1");
    byte[] sImageBytes;
    try {

        Connection con = JdbcConnection.getConnection();
        String Query = "SELECT image FROM user WHERE email ='" + iid + "';";
        System.out.println("Query is" + Query);
        Statement stmt = con.createStatement();
        ResultSet rs = stmt.executeQuery(Query);
        System.out.println("..........1");
        String name = "client_2";
        if (rs.next()) {

            sImageBytes = rs.getBytes("image");

            response.setContentType("image/jpeg");
            response.setContentLength(sImageBytes.length);
            // Give the name of the image in the name variable in the below line   
            response.setHeader("Content-Disposition", "inline; filename=\"" + name + "\"");

            BufferedInputStream input = new BufferedInputStream(new ByteArrayInputStream(sImageBytes));
            BufferedOutputStream output = new BufferedOutputStream(response.getOutputStream());

            byte[] buffer = new byte[8192];
            int length;
            while ((length = input.read(buffer)) > 0) {
                output.write(buffer, 0, length);
                System.out.println(".......3");
            }
            output.flush();
        }
    } catch (Exception ex) {
        System.out.println("error :" + ex);
    }
}

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From source file:com.novartis.pcs.ontology.rest.servlet.OntologiesServlet.java

@Override
protected void doGet(HttpServletRequest request, HttpServletResponse response)
        throws ServletException, IOException {
    String mediaType = getExpectedMediaType(request);
    String pathInfo = StringUtils.trimToNull(request.getPathInfo());
    boolean includeNonPublicXrefs = Boolean
            .parseBoolean(StringUtils.trimToNull(request.getParameter("nonpublic-xrefs")));
    if (mediaType == null) {
        response.setStatus(HttpServletResponse.SC_UNSUPPORTED_MEDIA_TYPE);
        response.setContentLength(0);
    } else if (pathInfo != null && pathInfo.length() > 1) {
        String ontologyName = pathInfo.substring(1);
        if (mediaType.equals(MEDIA_TYPE_JSON)) {
            serialize(ontologyName, response);
        } else {//from  w  w w .ja va2  s . com
            export(ontologyName, includeNonPublicXrefs, mediaType, response);
        }
    } else {
        mediaType = getExpectedMediaType(request, Collections.singletonList(MEDIA_TYPE_JSON));
        if (mediaType.equals(MEDIA_TYPE_JSON)) {
            serializeAll(response);
        } else {
            response.setStatus(HttpServletResponse.SC_UNSUPPORTED_MEDIA_TYPE);
            response.setContentLength(0);
        }
    }
}

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From source file:fr.univrouen.poste.web.membre.PosteAPourvoirController.java

@RequestMapping(value = "/{id}/{idFile}")
@PreAuthorize("hasPermission(#id, 'viewposte')")
public void downloadPosteFile(@PathVariable("id") Long id, @PathVariable("idFile") Long idFile,
        HttpServletRequest request, HttpServletResponse response) throws IOException, SQLException {
    try {//from  w  w  w  . j  a  va2s  .c om
        PosteAPourvoir poste = PosteAPourvoir.findPosteAPourvoir(id);
        PosteAPourvoirFile posteFile = PosteAPourvoirFile.findPosteAPourvoirFile(idFile);
        String filename = posteFile.getFilename();
        Long size = posteFile.getFileSize();
        String contentType = posteFile.getContentType();
        response.setContentType(contentType);
        response.setHeader("Content-Disposition", "attachment; filename=\"" + filename + "\"");
        response.setContentLength(size.intValue());
        IOUtils.copy(posteFile.getBigFile().getBinaryFile().getBinaryStream(), response.getOutputStream());

        Calendar cal = Calendar.getInstance();
        Date currentTime = cal.getTime();

        logService.logActionPosteFile(LogService.DOWNLOAD_ACTION, poste, posteFile, request, currentTime);
    } catch (IOException ioe) {
        String ip = request.getRemoteAddr();
        logger.warn("Download IOException, that can be just because the client [" + ip
                + "] canceled the download process : " + ioe.getCause());
    }
}

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From source file:org.pegadi.webapp.view.FileView.java

protected void renderMergedOutputModel(Map map, HttpServletRequest request, HttpServletResponse response)
        throws IOException {
    // get the file from the map
    File file = (File) map.get("file");

    // check if it exists
    if (file == null || !file.exists() || !file.canRead()) {
        log.warn("Error reading: " + file);
        try {/*from   ww w  . ja v  a 2 s .  c  o  m*/
            response.sendError(404);
        } catch (IOException e) {
            log.error("Could not write to response", e);
        }
        return;
    }
    // give some info in the response
    response.setContentType(getServletContext().getMimeType(file.getAbsolutePath()));
    // files does not change so often, allow three days caching
    response.setHeader("Cache-Control", "max-age=259200");
    response.setContentLength((int) file.length());

    // start writing to the response
    BufferedOutputStream out = null;
    BufferedInputStream in = null;
    try {
        out = new BufferedOutputStream(response.getOutputStream());
        in = new BufferedInputStream(new FileInputStream(file));
        int c = in.read();
        while (c != -1) {
            out.write(c);
            c = in.read();
        }
    } finally {
        if (in != null) {
            in.close();
        }
        if (out != null) {
            out.flush();
            out.close();
        }
    }
}

---

From source file:com.rhythm.louie.info.DownloadServlet.java

private void downloadFile(HttpServletRequest request, HttpServletResponse response, String filePath)
        throws IOException {
    if (filePath.isEmpty()) {
        response.sendError(HttpServletResponse.SC_NOT_FOUND);
        return;//w ww  . ja va 2 s . c  o m
    }
    File file = new File(filePath);
    int length = 0;
    try (ServletOutputStream outStream = response.getOutputStream()) {
        ServletContext context = getServletConfig().getServletContext();

        String mimetype = context.getMimeType(filePath);

        // sets response content type
        if (mimetype == null) {
            mimetype = "application/octet-stream";
        }
        response.setContentType(mimetype);
        response.setContentLength((int) file.length());
        String fileName = (new File(filePath)).getName();

        // sets HTTP header
        response.setHeader("Content-Disposition", "attachment; filename=\"" + fileName + "\"");

        byte[] byteBuffer = new byte[4096];
        // reads the file's bytes and writes them to the response stream
        try (DataInputStream in = new DataInputStream(new FileInputStream(file))) {
            // reads the file's bytes and writes them to the response stream
            while ((in != null) && ((length = in.read(byteBuffer)) != -1)) {
                outStream.write(byteBuffer, 0, length);
            }
        }
    }
}

---

From source file:com.rabbitstewdio.build.maven.tomcat.AbstractContentServlet.java

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

    String filename = request.getPathInfo();

    InputStream in = findResource(filename);
    if (in == null) {
        log.warn("Unable to find [" + filename + "] on " + getServletName());
        response.setStatus(404);/*from   w  w w.  j a va2  s  .c  o  m*/
        return;
    }

    ByteArrayOutputStream bout = new ByteArrayOutputStream();
    IOUtils.copy(in, bout);

    response.setCharacterEncoding("UTF-8");

    String mimeType = getServletContext().getMimeType(filename);
    if (mimeType != null) {
        response.setContentType(mimeType);
    }

    response.addDateHeader("Expires", 0L);
    response.setDateHeader(LAST_MODIFIED, new Date().getTime());
    response.setContentLength(bout.size());
    response.getOutputStream().write(bout.toByteArray());
    response.flushBuffer();
}

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From source file:uk.urchinly.wabi.expose.DownloadController.java

@RequestMapping(value = "/download/{assetId}", method = RequestMethod.GET)
public void download(HttpServletResponse response, @PathVariable("assetId") String assetId) throws IOException {

    Asset asset = this.assetMongoRepository.findOne(assetId);

    if (asset == null) {
        response.sendError(HttpServletResponse.SC_NOT_FOUND);
        return;//  w w  w . j  ava  2  s.  c  om
    }

    File file = new File(appSharePath, asset.getFileName());

    if (file.canRead()) {
        this.rabbitTemplate.convertAndSend(MessagingConstants.USAGE_ROUTE,
                new UsageEvent("download asset", asset.toString()));

        response.setContentType(asset.getContentType());
        response.setHeader("Content-Disposition", String.format("attachment; filename=\"%s\"", file.getName()));
        response.setContentLength((int) file.length());

        InputStream inputStream = new BufferedInputStream(new FileInputStream(file));
        FileCopyUtils.copy(inputStream, response.getOutputStream());
    } else {
        logger.warn("File '{}' not found.", file.getAbsolutePath());
        response.sendError(HttpServletResponse.SC_INTERNAL_SERVER_ERROR);
    }
}

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From source file:de.kp.ames.web.core.service.ServiceImpl.java

public void sendResponse(String content, String mimetype, HttpServletResponse response) throws IOException {

    response.setStatus(HttpServletResponse.SC_OK);
    response.setCharacterEncoding(GlobalConstants.UTF_8);

    response.setContentType(mimetype);//  w  w  w  .j  a va2s .c o  m

    byte[] bytes = content.getBytes(GlobalConstants.UTF_8);
    response.setContentLength(bytes.length);

    OutputStream os = response.getOutputStream();

    os.write(bytes);
    os.close();

}

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From source file:OutSimplePdf.java

public void makePdf(HttpServletRequest request, HttpServletResponse response, String methodGetPost)
        throws ServletException, IOException {
    try {/*www .j  av  a 2 s .com*/

        String msg = "your message";

        Document document = new Document();
        ByteArrayOutputStream baos = new ByteArrayOutputStream();
        PdfWriter.getInstance(document, baos);
        document.open();
        document.add(new Paragraph(msg));
        document.add(Chunk.NEWLINE);
        document.add(new Paragraph("a paragraph"));
        document.close();

        response.setHeader("Expires", "0");
        response.setHeader("Cache-Control", "must-revalidate, post-check=0, pre-check=0");
        response.setHeader("Pragma", "public");

        response.setContentType("application/pdf");

        response.setContentLength(baos.size());

        ServletOutputStream out = response.getOutputStream();
        baos.writeTo(out);
        out.flush();

    } catch (Exception e2) {
        System.out.println("Error in " + getClass().getName() + "\n" + e2);
    }
}

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From source file:es.tid.fiware.rss.controller.SettlementController.java

/**
 * View file./*w ww . ja v  a2  s .co  m*/
 * 
 * @param request
 * @param response
 * @throws ServletException
 * @throws IOException
 */
@RequestMapping("/viewFile")
public void viewfile(HttpServletRequest request, HttpServletResponse response)
        throws ServletException, IOException {
    try {
        String output_file_name = request.getParameter("rssname");
        logger.debug("Downloading file: " + output_file_name);

        File file = new File(output_file_name);
        FileInputStream is = new FileInputStream(file);

        response.setContentType("application/xls");
        response.setContentLength(new Long(file.length()).intValue());
        response.setHeader("Content-Disposition", "attachment; filename=\"" + file.getName() + "\"");

        OutputStream os = response.getOutputStream();

        FileCopyUtils.copy(is, os);
        is.close();
        os.close();
    } catch (Exception e) {
        logger.error(e.getMessage(), e);
    }
    return;
}

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