Example usage for javax.servlet.http HttpServletResponse getOutputStream

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

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Introduction

In this page you can find the example usage for javax.servlet.http HttpServletResponse getOutputStream.

Prototype

public ServletOutputStream getOutputStream() throws IOException;

Source Link

Document

Returns a ServletOutputStream suitable for writing binary data in the response.

Usage

From source file:com.google.gwtjsonrpc.server.JsonServlet.java

private static void textError(final ActiveCall call, final int status, final String message)
        throws IOException {
    final HttpServletResponse r = call.httpResponse;
    r.setStatus(status);// w ww .  j av  a2  s.c o m
    r.setContentType("text/plain; charset=" + ENC);

    final Writer w = new OutputStreamWriter(r.getOutputStream(), ENC);
    try {
        w.write(message);
    } finally {
        w.close();
    }
}

From source file:edu.harvard.med.screensaver.ui.arch.util.JSFUtils.java

/**
 * Performs the necessary steps to return server-side data, provided as an
 * InputStream, to an HTTP client. Must be called within a JSF-enabled servlet
 * environment.//from  w w w. j  av  a 2 s  . co  m
 *
 * @param facesContext the JSF FacesContext
 * @param dataInputStream an InputStream containing the data to send to the HTTP client
 * @param contentLocation set the "content-location" HTTP header to this value, allowing the downloaded file to be named
 * @param mimeType the MIME type of the file being sent
 * @throws IOException
 */
public static void handleUserDownloadRequest(FacesContext facesContext, InputStream dataInputStream,
        String contentLocation, String mimeType) throws IOException {
    HttpServletResponse response = (HttpServletResponse) facesContext.getExternalContext().getResponse();
    if (mimeType == null && contentLocation != null) {
        mimeType = MimetypesFileTypeMap.getDefaultFileTypeMap().getContentType(contentLocation);
    }
    if (mimeType != null) {
        response.setContentType(mimeType);
    }

    // NOTE: the second line does the trick with the filename. leaving first line in for posterity
    response.setHeader("Content-Location", contentLocation);
    response.setHeader("Content-disposition", "attachment; filename=\"" + contentLocation + "\"");

    OutputStream out = response.getOutputStream();
    IOUtils.copy(dataInputStream, out);
    out.close();

    // skip Render-Response JSF lifecycle phase, since we're generating a
    // non-Faces response
    facesContext.responseComplete();
}

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

/**
 * downloadFile// w  w  w. j  av a2  s  .c  om
 * 
 * @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();
    }
}

From source file:com.sunchenbin.store.feilong.servlet.http.ResponseUtil.java

/**
 * Down load data./*w  w w. j  a  v a  2s.c o  m*/
 *
 * @param saveFileName
 *            the save file name
 * @param inputStream
 *            the input stream
 * @param contentLength
 *            the content length
 * @param request
 *            the request
 * @param response
 *            the response
 */
private static void downLoadData(String saveFileName, InputStream inputStream, Number contentLength,
        HttpServletRequest request, HttpServletResponse response) {
    Date beginDate = new Date();

    if (LOGGER.isInfoEnabled()) {
        LOGGER.info("begin download~~,saveFileName:[{}],contentLength:[{}]", saveFileName,
                FileUtil.formatSize(contentLength.longValue()));
    }
    try {
        OutputStream outputStream = response.getOutputStream();

        //? 
        //inputStream.read(buffer);
        //outputStream = new BufferedOutputStream(response.getOutputStream());
        //outputStream.write(buffer);

        IOWriteUtil.write(inputStream, outputStream);
        if (LOGGER.isInfoEnabled()) {
            Date endDate = new Date();
            LOGGER.info("end download,saveFileName:[{}],contentLength:[{}],time use:[{}]", saveFileName,
                    FileUtil.formatSize(contentLength.longValue()),
                    DateExtensionUtil.getIntervalForView(beginDate, endDate));
        }
    } catch (IOException e) {
        /*
         * ?  ClientAbortException  ????? 
         * ?? ??
         * ???????
         * ? KILL? ?? ClientAbortException
         */
        //ClientAbortException:  java.net.SocketException: Connection reset by peer: socket write error
        final String exceptionName = e.getClass().getName();

        if (StringUtil.contains(exceptionName, "ClientAbortException")
                || StringUtil.contains(e.getMessage(), "ClientAbortException")) {
            LOGGER.warn(
                    "[ClientAbortException],maybe user use Thunder soft or abort client soft download,exceptionName:[{}],exception message:[{}] ,request User-Agent:[{}]",
                    exceptionName, e.getMessage(), RequestUtil.getHeaderUserAgent(request));
        } else {
            LOGGER.error("[download exception],exception name: " + exceptionName, e);
            throw new UncheckedIOException(e);
        }
    }
}

From source file:com.aurel.track.admin.customize.category.report.execute.ReportExecuteBL.java

/**
 * Serializes the data source into the response's output stream using a DOM
 * to XML converter/*from w ww  .ja  va  2  s  .com*/
 *
 * @param pluggableDatasouce
 * @param datasource
 * @return
 */
static String prepareDatasourceResponse(HttpServletResponse response, Integer templateID,
        IPluggableDatasource pluggableDatasouce, Map<String, Object> description, Object datasource) {
    // otherwise prepare an XML result
    DownloadUtil.prepareResponse(ServletActionContext.getRequest(), response, "TrackReport.xml", "text/xml");
    try {
        final OutputStream outputStream = response.getOutputStream();
        final String xslt = (String) description.get("xslt");
        if ((datasource != null) && (xslt != null) && (templateID != null)) {
            final File template = ReportBL.getDirTemplate(templateID);
            URL baseURL = null;
            try {
                baseURL = template.toURL();
            } catch (final MalformedURLException e) {
                LOGGER.error("Wrong template URL for " + template.getName() + e.getMessage());
                LOGGER.debug(ExceptionUtils.getStackTrace(e));
            }
            if (baseURL != null) {
                final String absolutePathXslt = baseURL.getFile() + xslt;
                try {
                    datasource = XsltTransformer.getInstance().transform((Document) datasource,
                            absolutePathXslt);
                } catch (final Exception e) {
                    LOGGER.warn("Tranforming the datasource with " + absolutePathXslt + " failed with "
                            + e.getMessage());
                    LOGGER.debug(ExceptionUtils.getStackTrace(e));
                }
            }
        }
        if (pluggableDatasouce == null) {
            // the default datasource (ReportBeans from last executed query)
            // serialize the DOM object into an XML stream
            ReportBeansToXML.convertToXml(outputStream, (Document) datasource);
        } else {
            // datasource specific serialization
            pluggableDatasouce.serializeDatasource(outputStream, datasource);
        }
    } catch (final Exception e) {
        LOGGER.error("Serializing the datasource to output stream failed with " + e.getMessage());
        LOGGER.debug(ExceptionUtils.getStackTrace(e));

    }
    return null;
}

From source file:io.druid.server.AsyncQueryForwardingServlet.java

private static void handleException(HttpServletResponse response, ObjectMapper objectMapper,
        Exception exception) throws IOException {
    if (!response.isCommitted()) {
        final String errorMessage = exception.getMessage() == null ? "null exception" : exception.getMessage();

        response.resetBuffer();//from   ww  w. java 2  s.  co  m
        response.setStatus(HttpServletResponse.SC_INTERNAL_SERVER_ERROR);
        objectMapper.writeValue(response.getOutputStream(), ImmutableMap.of("error", errorMessage));
    }
    response.flushBuffer();
}

From source file:com.aurel.track.admin.customize.lists.BlobBL.java

/**
 * Download the icon content/*from   ww w .j  a  va2s .  co  m*/
 * 
 * @param iconBytes
 * @param request
 * @param reponse
 * @param fileName
 * @param inline
 */
public static void download(byte[] iconBytes, HttpServletRequest request, HttpServletResponse reponse,
        String fileName, boolean inline) {
    prepareResponse(request, reponse, fileName, Long.toString(iconBytes.length), inline);
    // open the file
    InputStream inputStream = null;
    OutputStream outputStream = null;
    try {
        // retrieve the file data
        inputStream = new BufferedInputStream(new ByteArrayInputStream(iconBytes));
        outputStream = reponse.getOutputStream();
        byte[] buffer = new byte[BUFFER_SIZE];
        int bytesRead = 0;
        while ((bytesRead = inputStream.read(buffer, 0, BUFFER_SIZE)) != -1) {
            outputStream.write(buffer, 0, bytesRead);
        }
    } catch (FileNotFoundException fnfe) {
        LOGGER.error("FileNotFoundException thrown " + fnfe.getMessage());
        LOGGER.debug(ExceptionUtils.getStackTrace(fnfe));
        return;
    } catch (Exception ioe) {
        LOGGER.error("Creating the input stream failed with  " + ioe.getMessage(), ioe);
        LOGGER.debug(ExceptionUtils.getStackTrace(ioe));
        return;
    } finally {
        // flush and close the streams
        if (inputStream != null) {
            try {
                inputStream.close();
            } catch (IOException e) {
            }
        }
        if (outputStream != null) {
            try {
                outputStream.flush();
                outputStream.close();
            } catch (IOException e) {
            }
        }
    }
}

From source file:com.iorga.iraj.security.AbstractSecurityFilter.java

protected static void sendError(final int sc, final String message, final HttpServletResponse resp,
        final String debugMessage, final Throwable debugThrowableCause) throws IOException {
    if (log.isDebugEnabled()) {
        final String logMessage = "[" + sc + ":" + message + "]"
                + (debugMessage != null ? " " + debugMessage : "");
        if (debugThrowableCause != null) {
            log.debug(logMessage, debugThrowableCause);
        } else {/*from   ww  w.  j a  v  a 2  s  .  c  o  m*/
            log.debug(logMessage);
        }
    }

    resp.setStatus(sc);
    new MessagesBuilder().appendError(message).build().writeToOutputStream(resp.getOutputStream());
}

From source file:com.ikon.util.WebUtils.java

/**
 * Send file to client browser.//from w w  w  .  j  a  va  2s.  c  o  m
 * 
 * @throws IOException If there is a communication error.
 */
public static void sendFile(HttpServletRequest request, HttpServletResponse response, String fileName,
        String mimeType, boolean inline, InputStream is) throws IOException {
    log.debug("sendFile({}, {}, {}, {}, {}, {})",
            new Object[] { request, response, fileName, mimeType, inline, is });
    prepareSendFile(request, response, fileName, mimeType, inline);

    // Set length
    response.setContentLength(is.available());
    log.debug("File: {}, Length: {}", fileName, is.available());

    ServletOutputStream sos = response.getOutputStream();
    IOUtils.copy(is, sos);
    sos.flush();
    sos.close();
}

From source file:com.ikon.util.WebUtils.java

/**
 * Send file to client browser.//from  w ww  . ja v  a 2 s.  c om
 * 
 * @throws IOException If there is a communication error.
 */
public static void sendFile(HttpServletRequest request, HttpServletResponse response, String fileName,
        String mimeType, boolean inline, File input) throws IOException {
    log.debug("sendFile({}, {}, {}, {}, {}, {})",
            new Object[] { request, response, fileName, mimeType, inline, input });
    prepareSendFile(request, response, fileName, mimeType, inline);

    // Set length
    response.setContentLength((int) input.length());
    log.debug("File: {}, Length: {}", fileName, input.length());

    ServletOutputStream sos = response.getOutputStream();
    FileUtils.copy(input, sos);
    sos.flush();
    sos.close();
}