Example usage for javax.servlet.http HttpServletResponse setContentLength

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

  1. HOME
  2. Java
  3. javax
  4. javax.servlet.http.*
  5. HttpServletResponse
  6. 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:com.duroty.application.mail.actions.AttachmentAction.java

/**
 * DOCUMENT ME!// ww w . j av  a 2  s.  c  o m
 *
 * @param request DOCUMENT ME!
 * @param response DOCUMENT ME!
 *
 * @throws ServletException DOCUMENT ME!
 * @throws IOException DOCUMENT ME!
 */
protected void doDownload(HttpServletRequest request, HttpServletResponse response)
        throws ServletException, IOException {
    DataInputStream in = null;
    ByteArrayInputStream bais = null;
    ServletOutputStream op = null;

    try {
        String mid = request.getParameter("mid");
        String part = request.getParameter("part");

        Mail filesInstance = getMailInstance(request);

        MailPartObj obj = filesInstance.getAttachment(mid, part);

        int length = 0;
        op = response.getOutputStream();

        String mimetype = obj.getContentType();

        //
        //  Set the response and go!
        //
        //  Yes, I know that the RFC says 'attachment'.  Unfortunately, IE has a typo
        //  in it somewhere, and Netscape seems to accept this typing as well.
        //
        response.setContentType((mimetype != null) ? mimetype : "application/octet-stream");
        response.setContentLength((int) obj.getSize());
        response.setHeader("Content-Disposition", "attachement; filename=\"" + obj.getName() + "\"");
        response.setHeader("Pragma", "public");
        response.setHeader("Cache-Control", "max-age=0");

        //
        //  Stream to the requester.
        //
        byte[] bbuf = new byte[1024];
        bais = new ByteArrayInputStream(obj.getAttachent());
        in = new DataInputStream(bais);

        while ((in != null) && ((length = in.read(bbuf)) != -1)) {
            op.write(bbuf, 0, length);
        }
    } catch (Exception ex) {
    } finally {
        try {
            op.flush();
        } catch (Exception ex) {
        }

        IOUtils.closeQuietly(bais);
        IOUtils.closeQuietly(in);
        IOUtils.closeQuietly(op);
    }
}

From source file:net.sourceforge.fenixedu.presentationTier.Action.publico.candidacies.GenericCandidaciesDA.java

public ActionForward downloadRecomendationFile(ActionMapping mapping, ActionForm form,
        HttpServletRequest request, HttpServletResponse response) throws IOException {
    final String confirmationCode = (String) getFromRequest(request, "confirmationCode");
    final GenericApplicationLetterOfRecomentation file = getDomainObject(request, "fileExternalId");
    if (file != null && file.getRecomentation() != null && file.getRecomentation().getConfirmationCode() != null
            && ((file.getRecomentation().getGenericApplication().getGenericApplicationPeriod()
                    .isCurrentUserAllowedToMange())
                    || file.getRecomentation().getConfirmationCode().equals(confirmationCode))) {
        response.setContentType(file.getContentType());
        response.addHeader("Content-Disposition", "attachment; filename=\"" + file.getFilename() + "\"");
        response.setContentLength(file.getSize().intValue());
        final DataOutputStream dos = new DataOutputStream(response.getOutputStream());
        dos.write(file.getContent());//from  w  ww  .  ja  va  2 s . co  m
        dos.close();
    } else {
        response.setStatus(HttpServletResponse.SC_BAD_REQUEST);
        response.getWriter().write(HttpStatus.getStatusText(HttpStatus.SC_BAD_REQUEST));
        response.getWriter().close();
    }
    return null;
}

From source file:com.duroty.application.files.actions.DownloadFileAction.java

/**
 * DOCUMENT ME!/*from ww  w .  j  a  v a  2  s  .c o  m*/
 *
 * @param request DOCUMENT ME!
 * @param response DOCUMENT ME!
 *
 * @throws ServletException DOCUMENT ME!
 * @throws IOException DOCUMENT ME!
 */
protected void doDownload(HttpServletRequest request, HttpServletResponse response)
        throws ServletException, IOException {
    DataInputStream in = null;
    ByteArrayInputStream bais = null;
    ServletOutputStream op = null;

    try {
        String mid = request.getParameter("mid");
        String part = request.getParameter("part");

        Files filesInstance = getFilesInstance(request);

        MailPartObj obj = filesInstance.getAttachment(mid, part);

        int length = 0;
        op = response.getOutputStream();

        String mimetype = obj.getContentType();

        //
        //  Set the response and go!
        //
        //  Yes, I know that the RFC says 'attachment'.  Unfortunately, IE has a typo
        //  in it somewhere, and Netscape seems to accept this typing as well.
        //
        response.setContentType((mimetype != null) ? mimetype : "application/octet-stream");
        response.setContentLength((int) obj.getSize());
        response.setHeader("Content-Disposition", "attachement; filename=\"" + obj.getName() + "\"");
        response.setHeader("Pragma", "public");
        response.setHeader("Cache-Control", "max-age=0");

        //
        //  Stream to the requester.
        //
        byte[] bbuf = new byte[1024];
        bais = new ByteArrayInputStream(obj.getAttachent());
        in = new DataInputStream(bais);

        while ((in != null) && ((length = in.read(bbuf)) != -1)) {
            op.write(bbuf, 0, length);
        }
    } catch (Exception ex) {
    } finally {
        try {
            op.flush();
        } catch (Exception ex) {
        }

        IOUtils.closeQuietly(bais);
        IOUtils.closeQuietly(in);
        IOUtils.closeQuietly(op);
    }
}

From source file:net.sourceforge.fenixedu.presentationTier.Action.coordinator.thesis.ManageThesisDA.java

public ActionForward downloadIdentificationSheet(ActionMapping mapping, ActionForm actionForm,
        HttpServletRequest request, HttpServletResponse response) throws Exception {
    Thesis thesis = getThesis(request);/*from   w  w w  .jav  a 2 s .com*/

    try {
        StudentThesisIdentificationDocument document = new StudentThesisIdentificationDocument(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.identification.failed");
        return listThesis(mapping, actionForm, request, response);
    }
}

From source file:com.eryansky.modules.disk.utils.DiskUtils.java

/**
 * //from  w  ww.ja v  a  2  s  .com
 * @param request
 * @param response
 * @param inputStream ?
 * @param displayName ??
 * @throws IOException
 */
public static void download(HttpServletRequest request, HttpServletResponse response, InputStream inputStream,
        String displayName) throws IOException {
    response.reset();
    WebUtils.setNoCacheHeader(response);
    String contentType = "application/x-download";
    if (StringUtils.isNotBlank(displayName)) {
        if (displayName.endsWith(".doc")) {
            contentType = "application/msword";
        } else if (displayName.endsWith(".docx")) {
            contentType = "application/vnd.openxmlformats-officedocument.wordprocessingml.document";
        } else if (displayName.endsWith(".xls")) {
            contentType = "application/vnd.ms-excel";
        } else if (displayName.endsWith(".xlsx")) {
            contentType = "application/vnd.openxmlformats-officedocument.spreadsheetml.sheet";
        } else if (displayName.endsWith(".ppt")) {
            contentType = "application/vnd.ms-powerpoint";
        } else if (displayName.endsWith(".pptx")) {
            contentType = "application/vnd.openxmlformats-officedocument.presentationml.presentation";
        } else if (displayName.endsWith(".pdf")) {
            contentType = "application/pdf";
        } else if (displayName.endsWith(".jpg") || displayName.endsWith(".jpeg")) {
            contentType = "image/jpeg";
        } else if (displayName.endsWith(".gif")) {
            contentType = "image/gif";
        } else if (displayName.endsWith(".bmp")) {
            contentType = "image/bmp";
        }
    }

    response.setContentType(contentType);
    response.setContentLength((int) inputStream.available());

    //        String displayFilename = displayName.substring(displayName.lastIndexOf("_") + 1);
    //        displayFilename = displayFilename.replace(" ", "_");
    WebUtils.setDownloadableHeader(request, response, displayName);
    BufferedInputStream is = null;
    OutputStream os = null;
    try {

        os = response.getOutputStream();
        is = new BufferedInputStream(inputStream);
        IOUtils.copy(is, os);
    } catch (Exception e) {
        e.printStackTrace();
    } finally {
        IOUtils.closeQuietly(is);
    }
}

From source file:com.webpagebytes.cms.utility.HttpServletToolbox.java

public void writeBodyResponseAsJson(HttpServletResponse response, org.json.JSONObject data,
        Map<String, String> errors) {

    try {/*w  w  w. j av a  2  s.c o  m*/
        org.json.JSONObject jsonResponse = new org.json.JSONObject();
        org.json.JSONObject jsonErrors = new org.json.JSONObject();
        if (errors == null || errors.keySet().size() == 0) {
            jsonResponse.put("status", "OK");
        } else {
            jsonResponse.put("status", "FAIL");
            for (String key : errors.keySet()) {
                jsonErrors.put(key, errors.get(key));
            }
        }
        jsonResponse.put("errors", jsonErrors);
        jsonResponse.put("payload", data);
        String jsonString = jsonResponse.toString();
        response.setContentType("application/json");
        response.setCharacterEncoding("UTF-8");
        ServletOutputStream writer = response.getOutputStream();
        byte[] utf8bytes = jsonString.getBytes("UTF-8");
        writer.write(utf8bytes);
        response.setContentLength(utf8bytes.length);
        writer.flush();

    } catch (Exception e) {
        try {
            String errorResponse = "{\"status\":\"FAIL\",\"payload\":\"{}\",\"errors\":{\"reason\":\"WB_UNKNOWN_ERROR\"}}";
            ServletOutputStream writer = response.getOutputStream();
            response.setContentType("application/json");
            byte[] utf8bytes = errorResponse.getBytes("UTF-8");
            response.setContentLength(utf8bytes.length);
            writer.write(utf8bytes);
            writer.flush();
        } catch (IOException ioe) {
            response.setStatus(HttpServletResponse.SC_INTERNAL_SERVER_ERROR);
        }
    }

}

From source file:com.cloud.servlet.StaticResourceServlet.java

@Override
protected void doGet(final HttpServletRequest req, final HttpServletResponse resp)
        throws ServletException, IOException {
    final File requestedFile = getRequestedFile(req);
    if (!requestedFile.exists() || !requestedFile.isFile()) {
        resp.setStatus(HttpServletResponse.SC_NOT_FOUND);
        return;/*from   ww  w  .  j  a  va  2s .c  o  m*/
    }
    final String etag = getEtag(requestedFile);
    if (etag.equals(req.getHeader("If-None-Match"))) {
        resp.setStatus(HttpServletResponse.SC_NOT_MODIFIED);
        return;
    }
    // have to send data, either compressed or the original
    final File compressedStatic = getCompressedVersion(requestedFile);
    InputStream fileContent = null;
    try {
        resp.setContentType(getContentType(requestedFile.getName()));
        resp.setHeader("ETag", etag);
        resp.setStatus(HttpServletResponse.SC_OK);
        if (isClientCompressionSupported(req) && compressedStatic.exists()) {
            // gzip compressed
            resp.setHeader("Content-Encoding", "gzip");
            resp.setContentLength((int) compressedStatic.length());
            fileContent = new FileInputStream(compressedStatic);
        } else {
            // uncompressed
            resp.setContentLength((int) requestedFile.length());
            fileContent = new FileInputStream(requestedFile);
        }
        IOUtils.copy(fileContent, resp.getOutputStream());
    } finally {
        IOUtils.closeQuietly(fileContent);
    }
}

From source file:de.micromata.genome.gwiki.web.StaticFileServlet.java

@Override
protected void doGet(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
    String uri = req.getPathInfo();
    String servletp = req.getServletPath();
    String respath = servletp + uri;
    if (uri == null) {
        resp.sendError(HttpServletResponse.SC_NOT_FOUND);
        return;//from www.  j a v  a  2s  .c  o  m
    }

    InputStream is = getServletContext().getResourceAsStream(respath);
    if (is == null) {
        resp.sendError(HttpServletResponse.SC_NOT_FOUND);
        return;
    }
    long nt = new Date().getTime() + TimeInMillis.DAY;
    String mime = MimeUtils.getMimeTypeFromFile(respath);
    if (StringUtils.equals(mime, "application/x-shockwave-flash")) {
        resp.setHeader("Cache-Control", "cache, must-revalidate");
        resp.setHeader("Pragma", "public");
    }
    resp.setDateHeader("Expires", nt);
    resp.setHeader("Cache-Control", "max-age=86400, public");
    if (mime != null) {
        resp.setContentType(mime);
    }

    byte[] data = IOUtils.toByteArray(is);
    IOUtils.closeQuietly(is);
    resp.setContentLength(data.length);
    IOUtils.write(data, resp.getOutputStream());
}

From source file:com.spring.tutorial.controllers.DefaultController.java

@RequestMapping(value = "/my-drive/dropbox/downloads/**", method = RequestMethod.GET)
public String getDropboxFile(HttpServletRequest request, HttpServletResponse response)
        throws IOException, DbxException {

    config = new DbxRequestConfig("JavaTutorial/1.0", Locale.getDefault().toString());
    DbxClient client = new DbxClient(config, (String) request.getSession().getAttribute("dropbox_token"));

    String path = request.getServletPath()
            .substring(request.getServletPath().indexOf("/my-drive/dropbox/downloads/") + 27);
    ServletOutputStream outputStream = response.getOutputStream();
    try {//from  w w w . j ava 2 s . co  m

        DbxEntry.File downloadedFile = client.getFile(path, null, outputStream);
        String mimeType = "application/octet-stream";
        response.setContentType(mimeType);
        response.setContentLength((int) downloadedFile.numBytes);
        String headerKey = "Content-Disposition";
        String headerValue = String.format("attachment; filename=\"%s\"", downloadedFile.name);
    } finally {
        outputStream.close();
    }
    return "";
}

From source file:org.fao.fenix.maps.web.rest.MapsRESTService.java

private void handleException(HttpServletResponse response, String message) throws IOException {
    String output = Wrapper.wrapAsHTML(message).toString();
    response.setContentLength(output.length());
    response.setContentType("text/html");
    PrintWriter out = response.getWriter();
    out.println(output);/*from w  w w. jav  a2 s  .  co m*/
    out.close();
    out.flush();
}