Example usage for javax.servlet ServletOutputStream write

Introduction

In this page you can find the example usage for javax.servlet ServletOutputStream write.

Prototype

public abstract void write(int b) throws IOException;

Source Link

Document

Writes the specified byte to this output stream.

Usage

From source file:org.ejbca.ui.web.RequestHelper.java

/**
 * Sends back certificate as binary file (application/octet-stream)
 *
 * @param b64cert base64 encoded certificate to be returned
 * @param out output stream to send to/*from   w  w  w . j  av  a2  s  .  com*/
 * @param filename filename sent as 'Content-disposition' header 
 * @param beginKey String containing key information, i.e. BEGIN_CERTIFICATE_WITH_NL or BEGIN_PKCS7_WITH_NL
 * @param endKey String containing key information, i.e. END_CERTIFICATE_WITH_NL or END_PKCS7_WITH_NL
 * @throws IOException 
 * @throws Exception on error
 */
public static void sendNewB64File(byte[] b64cert, HttpServletResponse out, String filename, String beginKey,
        String endKey) throws IOException {
    if (b64cert.length == 0) {
        log.error("0 length certificate can not be sent to client!");
        return;
    }

    // We must remove cache headers for IE
    ServletUtils.removeCacheHeaders(out);

    // Set content-type to general file
    out.setContentType("application/octet-stream");
    out.setHeader("Content-disposition", "filename=\"" + StringTools.stripFilename(filename) + "\"");

    out.setContentLength(b64cert.length + beginKey.length() + endKey.length());

    // Write the certificate
    ServletOutputStream os = out.getOutputStream();
    os.write(beginKey.getBytes());
    os.write(b64cert);
    os.write(endKey.getBytes());
    out.flushBuffer();
    if (log.isDebugEnabled()) {
        log.debug("Sent reply to client");
        log.debug(new String(b64cert));
    }
}

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From source file:org.ejbca.ui.web.RequestHelper.java

/**
 * Sends back a number of bytes/*from   ww w.j a  v a  2s. com*/
 *
 * @param bytes DER encoded certificate to be returned
 * @param out output stream to send to
 * @param contentType mime type to send back bytes as
 * @param fileName to call the file in a Content-disposition, can be null to leave out this header
 *
 * @throws Exception on error
 */
public static void sendBinaryBytes(final byte[] bytes, final HttpServletResponse out, final String contentType,
        final String filename) throws Exception {
    if ((bytes == null) || (bytes.length == 0)) {
        log.error("0 length can not be sent to client!");
        return;
    }

    if (filename != null) {
        // We must remove cache headers for IE
        ServletUtils.removeCacheHeaders(out);
        out.setHeader("Content-disposition", "filename=\"" + StringTools.stripFilename(filename) + "\"");
    }

    // Set content-type to general file
    out.setContentType(contentType);
    out.setContentLength(bytes.length);

    // Write the certificate
    final ServletOutputStream os = out.getOutputStream();
    os.write(bytes);
    out.flushBuffer();
    if (log.isDebugEnabled()) {
        log.debug("Sent " + bytes.length + " bytes to client");
    }
}

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From source file:org.xsystem.sql2.http.impl.HttpHelper.java

public static void writeFile(FileTransfer fileTransfer, boolean isDownload, int thumb,
        HttpServletRequest request, HttpServletResponse response, ServletOutputStream out) throws Exception {
    response.setHeader("Pragma", "No-cache");
    response.setDateHeader("Expires", 0);
    response.setHeader("Cache-Control", "no-cache");
    response.setCharacterEncoding("UTF-8");

    if (!isDownload) {

        FileTransfer ft = ImgHelper.previewFile(fileTransfer, thumb);
        String contentType = ft.getContentType();
        response.setContentType(contentType);
        byte b[] = ft.getData();
        out.write(b);
    } else {//from  w w w .j av a  2 s  .  c  o m
        String userAgent = request.getHeader("USER-AGENT").toLowerCase();
        response.setHeader("Content-Type", "application/force-download; charset=utf-8");
        String fname = fileTransfer.getFileName();
        String URLEncodedFileName = URLEncoder.encode(fname, "UTF-8");
        String ResultFileName = URLEncodedFileName.replace('+', ' ');
        if (userAgent != null && (userAgent.contains("chrome") || userAgent.contains("msie")
                || userAgent.contains("trident"))) {
            response.setHeader("Content-Disposition", "attachment; filename=\"" + ResultFileName + "\"");

        } else {
            response.setHeader("Content-Disposition",
                    "attachment; filename*=\"utf8'ru-ru'" + ResultFileName + "\"");
        }
        out.write(fileTransfer.getData());
    }
}

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From source file:com.webbfontaine.valuewebb.model.util.Utils.java

public static void sendBytes(byte[] bytes, String filename, String contentType) {
    if (bytes != null) {
        HttpServletResponse response = (HttpServletResponse) FacesContext.getCurrentInstance()
                .getExternalContext().getResponse();

        response.setContentType(contentType);
        response.addHeader("Content-disposition", "attachment; filename=" + filename);
        response.addHeader("Content-Length", String.valueOf(bytes.length));
        ServletOutputStream os = null;
        try {/*from   w  w w  .  ja va 2  s .  c o m*/
            os = response.getOutputStream();
            os.write(bytes);
            os.flush();
            FacesContext.getCurrentInstance().responseComplete();
        } catch (IOException e) {
            LOGGER.error("Sending content failed {0}", filename, e);
        } finally {
            if (os != null) {
                try {
                    os.close();
                } catch (IOException e) {
                    LOGGER.error("Failed to close stream after sending", e);
                }
            }
        }
    }
}

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From source file:ispyb.client.common.util.FileUtil.java

/**
 * downloadFile//from w w  w  . j  a  va 2s  .  c  o m
 * 
 * @param fullFilePath
 * @param mimeType
 * @param response
 */
public static void DownloadFile(String fullFilePath, String mimeType, String attachmentFilename,
        HttpServletResponse response) {
    try {
        byte[] imageBytes = FileUtil.readBytes(fullFilePath);
        response.setContentLength(imageBytes.length);
        ServletOutputStream out = response.getOutputStream();
        response.setHeader("Pragma", "public");
        response.setHeader("Cache-Control", "max-age=0");
        response.setContentType(mimeType);
        response.setHeader("Content-Disposition", "attachment; filename=" + attachmentFilename);

        out.write(imageBytes);
        out.flush();
        out.close();

    } catch (FileNotFoundException fnf) {
        LOG.debug("[DownloadFile] File not found: " + fullFilePath);
    } catch (Exception e) {
        e.printStackTrace();
    }
}

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From source file:ch.rasc.extclassgenerator.ModelGenerator.java

public static void writeModel(HttpServletRequest request, HttpServletResponse response, ModelBean model,
        OutputConfig outputConfig) throws IOException {

    byte[] data = generateJavascript(model, outputConfig).getBytes(UTF8_CHARSET);
    String ifNoneMatch = request.getHeader("If-None-Match");
    String etag = "\"0" + DigestUtils.md5DigestAsHex(data) + "\"";

    if (etag.equals(ifNoneMatch)) {
        response.setStatus(HttpServletResponse.SC_NOT_MODIFIED);
        return;//from   w  w w. j  av a  2s.  co  m
    }

    response.setContentType("application/javascript");
    response.setCharacterEncoding(UTF8_CHARSET.name());
    response.setContentLength(data.length);

    response.setHeader("ETag", etag);

    @SuppressWarnings("resource")
    ServletOutputStream out = response.getOutputStream();
    out.write(data);
    out.flush();

}

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From source file:org.opentaps.common.event.PaginationEvents.java

/**
 * Download an existing Excel file from the ${opentaps_home}/runtime/output
 * directory. The Excel file is deleted after the download.
 *
 * @param filename the file name String object
 * @param request a <code>HttpServletRequest</code> value
 * @param response a <code>HttpServletResponse</code> value
 * @return a <code>String</code> value
 *///from w w  w . ja v  a  2  s .c  o m
private static String downloadExcel(String filename, HttpServletRequest request, HttpServletResponse response) {
    File file = null;
    ServletOutputStream out = null;
    FileInputStream fileToDownload = null;

    try {
        out = response.getOutputStream();

        file = new File(UtilCommon.getAbsoluteFilePath(request, filename));
        fileToDownload = new FileInputStream(file);

        response.setContentType("application/vnd.ms-excel");
        response.setHeader("Content-Disposition", "attachment; filename=" + filename);
        response.setContentLength(fileToDownload.available());

        int c;
        while ((c = fileToDownload.read()) != -1) {
            out.write(c);
        }

        out.flush();
    } catch (FileNotFoundException e) {
        Debug.logError("Failed to open the file: " + filename, MODULE);
        return "error";
    } catch (IOException ioe) {
        Debug.logError("IOException is thrown while trying to download the Excel file: " + ioe.getMessage(),
                MODULE);
        return "error";
    } finally {
        try {
            out.close();
            if (fileToDownload != null) {
                fileToDownload.close();
                // Delete the file under /runtime/output/ this is optional
                file.delete();
            }
        } catch (IOException ioe) {
            Debug.logError("IOException is thrown while trying to download the Excel file: " + ioe.getMessage(),
                    MODULE);
            return "error";
        }
    }

    return "success";
}

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From source file:CounterServer.java

public void doPost(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
    HttpSession session = req.getSession(true);
    int count = 1;
    Integer i = (Integer) session.getAttribute(COUNTER_KEY);
    if (i != null) {
        count = i.intValue() + 5;//from   w  ww. j  a va  2s . c o  m
    }
    session.setAttribute(COUNTER_KEY, new Integer(count));
    DataInputStream in = new DataInputStream(req.getInputStream());
    resp.setContentType("application/octet-stream");
    ByteArrayOutputStream byteOut = new ByteArrayOutputStream();
    DataOutputStream out = new DataOutputStream(byteOut);
    out.writeInt(count);
    out.flush();
    byte[] buf = byteOut.toByteArray();
    resp.setContentLength(buf.length);
    ServletOutputStream servletOut = resp.getOutputStream();
    servletOut.write(buf);
    servletOut.close();
}

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From source file:werecloud.api.view.StringView.java

@Override
public void render(Map<String, ?> model, HttpServletRequest request, HttpServletResponse response)
        throws Exception {

    if (model.containsKey("string")) {
        String data = model.get("string").toString();
        byte[] _data = data.getBytes();
        response.setContentType(getContentType());
        response.setContentLength(_data.length);
        ServletOutputStream out = response.getOutputStream();
        out.write(_data);
        out.flush();/*from w  w w .j  a v  a2s. c o m*/
        out.close();
        return;
    }
    throw new Exception("Could not find model.");
}

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From source file:test.be.fedict.eid.applet.XmlSignatureServlet.java

@Override
protected void doGet(HttpServletRequest request, HttpServletResponse response)
        throws ServletException, IOException {
    LOG.debug("doGet");
    HttpSession httpSession = request.getSession();
    String documentStr = (String) httpSession.getAttribute("xmlDocument");
    response.setContentType("text/xml");
    response.setHeader("Cache-Control", "no-cache, no-store, must-revalidate, max-age=-1"); // http 1.1
    response.setHeader("Pragma", "no-cache, no-store"); // http 1.0
    response.setDateHeader("Expires", -1);
    ServletOutputStream out = response.getOutputStream();
    out.write(documentStr.getBytes());
    out.close();//from   w  ww .j a v a  2 s .  com
}

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