Example usage for javax.servlet ServletOutputStream write

List of usage examples for javax.servlet ServletOutputStream write

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Introduction

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

Prototype

public void write(byte b[], int off, int len) throws IOException

Source Link

Document

Writes len bytes from the specified byte array starting at offset off to this output stream.

Usage

From source file:cpabe.controladores.UploadDecriptacaoServlet.java

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

    String fileName = request.getParameter("fileName");
    if (fileName == null || fileName.equals("")) {
        throw new ServletException("O nome do arquivo no pode ser null ou vazio.");
    }// w  w w.  j av  a2  s.  co  m
    File file = new File(request.getServletContext().getAttribute("FILES_DIR") + File.separator + fileName);
    if (!file.exists()) {
        throw new ServletException("O arquivo desejado no existe no Servidor.");
    }
    System.out.println("File location on server::" + file.getAbsolutePath());
    ServletContext ctx = getServletContext();
    InputStream fis = new FileInputStream(file);
    String mimeType = ctx.getMimeType(file.getAbsolutePath());
    response.setContentType(mimeType != null ? mimeType : "application/octet-stream");
    response.setContentLength((int) file.length());
    response.setHeader("Content-Disposition", "attachment; filename=\"" + fileName + "\"");

    ServletOutputStream os = response.getOutputStream();
    byte[] bufferData = new byte[1024];
    int read = 0;
    while ((read = fis.read(bufferData)) != -1) {
        os.write(bufferData, 0, read);
    }
    os.flush();
    os.close();
    fis.close();
    System.out.println("File downloaded at client successfully");
}

From source file:com.Uploader.java

/**
 * Handles the HTTP <code>GET</code> method.
 *
 * @param request servlet request/*from w w  w  . j  av a  2s  .  c o m*/
 * @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 {
    //  processRequest(request, response);
    String fileName = request.getParameter("fileName");
    if (fileName == null || fileName.equals("")) {
        throw new ServletException("File Name can't be null or empty");
    }
    File file = new File(request.getServletContext().getAttribute("FILES_DIR") + File.separator + fileName);
    if (!file.exists()) {
        throw new ServletException("File doesn't exists on server.");
    }
    System.out.println("File location on server::" + file.getAbsolutePath());
    ServletContext ctx = getServletContext();
    InputStream fis = new FileInputStream(file);
    String mimeType = ctx.getMimeType(file.getAbsolutePath());
    response.setContentType(mimeType != null ? mimeType : "application/octet-stream");
    response.setContentLength((int) file.length());
    response.setHeader("Content-Disposition", "attachment; filename=\"" + fileName + "\"");

    ServletOutputStream os = response.getOutputStream();
    byte[] bufferData = new byte[1024];
    int read = 0;
    while ((read = fis.read(bufferData)) != -1) {
        os.write(bufferData, 0, read);
    }
    os.flush();
    os.close();
    fis.close();
    System.out.println("File downloaded at client successfully");
}

From source file:com.smartgwt.extensions.fileuploader.server.DownloadServlet.java

public void doGet(HttpServletRequest request, HttpServletResponse response) {
    // url: /thinkspace/download/project/2/.....
    String path = request.getPathInfo();
    String[] items = path.split("/");
    if (items.length < 3 || !items[1].equals("project")) {
        // if no path info then nothing can be downloaded
        reportError(response);/*from   w  w w .j a  va 2s. com*/
        return;
    }
    InputStream in = null;
    try {
        int pid = Integer.parseInt(items[2]);
        /*           Project project = ProjectService.get().getProjectById(pid);
                   String contextName = project.getContext();
                 ProjectState state = (ProjectState) request.getSession().getAttribute(contextName);
                 if (state == null) {
                    // if no state then user has not authenticated
                    reportError(response);
                    return;
                 }
        */
        // only files in lib directories can be downloaded
        boolean hasPermission = false;
        for (int i = items.length - 1; i > 2; i--) {
            if (items[i].equals("lib")) {
                hasPermission = true;
                break;
            }
        }
        if (!hasPermission) {
            reportError(response);
            return;
        }
        /*          File f = state.getFileManager().getFile(path);
                  String type = ContentService.get().getContentType(path);
                  response.setContentType(type);
                  response.setContentLength((int)f.length());
                  response.setHeader("Content-Disposition", "inline; filename="+Util.encode(f.getName()));
                  response.setHeader("Last-Modified",hdf.format(new Date(f.lastModified())));
                  in = new BufferedInputStream(new FileInputStream(f));
        */ ServletOutputStream out = response.getOutputStream();
        byte[] buf = new byte[8192];
        int len = 0;
        while ((len = in.read(buf)) > 0) {
            out.write(buf, 0, len);
        }
        out.close();
        out.flush();
    } catch (Exception e) {
        reportError(response);
        log.error(e);
    } finally {
        if (in != null)
            try {
                in.close();
            } catch (Exception e) {
            }
        ;
    }
}

From source file:org.primeframework.mvc.action.result.StreamResult.java

/**
 * {@inheritDoc}/*from   w  w  w  . j a  v  a  2  s  .  c  om*/
 */
public void execute(Stream stream) throws IOException, ServletException {
    ActionInvocation current = actionInvocationStore.getCurrent();
    Object action = current.action;
    String property = stream.property();
    String length = expand(stream.length(), action, false);
    String name = expand(stream.name(), action, true);
    String type = expand(stream.type(), action, false);

    Object object = expressionEvaluator.getValue(property, action);
    if (object == null || !(object instanceof InputStream)) {
        throw new PrimeException("Invalid property [" + property + "] for Stream result. This "
                + "property returned null or an Object that is not an InputStream.");
    }

    response.setContentType(type);

    if (StringUtils.isNotBlank(length)) {
        response.setContentLength(Integer.parseInt(length));
    }

    if (StringUtils.isNotBlank(name)) {
        response.setHeader("Content-Disposition", "attachment; filename=\"" + name + "\"");
    }

    if (!isCurrentActionHeadRequest(current)) {
        InputStream is = (InputStream) object;
        ServletOutputStream sos = response.getOutputStream();
        try {
            // Then output the file
            byte[] b = new byte[8192];
            int len;
            while ((len = is.read(b)) != -1) {
                sos.write(b, 0, len);
            }
        } finally {
            sos.flush();
            sos.close();
        }
    }
}

From source file:org.intermine.web.struts.FileDownloadAction.java

@Override
public ActionForward execute(ActionMapping mapping, ActionForm form, HttpServletRequest request,
        HttpServletResponse response) throws Exception {

    //        String path = "WEB-INF/lib/";
    //        String fileName = "intermine-webservice-client.jar";

    try {/*from ww w.j  a v a 2s  . c o  m*/
        String path = request.getParameter("path");
        String fileName = request.getParameter("fileName");
        String mimeType = request.getParameter("mimeType");
        String mimeExtension = request.getParameter("mimeExtension");

        if (!fileIsPermitted(fileName)) {
            response.sendError(401);
            return null;
        }

        //          String contextPath = getServlet().getServletContext().getRealPath("/");
        //          String filePath = contextPath + path + fileName;
        //          File file = new File(filePath);
        //          FileOutputStream fos = new FileOutputStream(file);

        // Read the file into a input stream
        InputStream is = getServlet().getServletContext().getResourceAsStream(path + fileName);

        if (is == null) {
            response.sendError(404);
            return null;
        }

        // MIME type
        if (fileName.endsWith(mimeExtension)) {
            response.setContentType(mimeType);
            response.setHeader("Content-disposition", "attachment; filename=" + fileName);
        }

        ServletOutputStream sos = response.getOutputStream();

        byte[] buff = new byte[2048];
        int bytesRead;

        while (-1 != (bytesRead = is.read(buff, 0, buff.length))) {
            sos.write(buff, 0, bytesRead);
        }

        is.close();
        sos.close();
    } catch (Exception e) {
        e.printStackTrace();
        recordError(new ActionMessage("api.fileDownloadFailed"), request);
        return mapping.findForward("api");
    }

    return null;
}

From source file:eu.europa.ejusticeportal.dss.controller.action.DownloadSignedPdf.java

/**
 * Writes the PDF document to the browser
 * @param sf the container//from ww w.  j a  v a2  s  .c  om
 * @param response the response
 * @throws IOException 
 */
private void writeRaw(SignedForm sf, HttpServletResponse response) throws IOException {

    InputStream is = new ByteArrayInputStream(sf.getDocument());
    ServletOutputStream outs = null;
    try {
        outs = response.getOutputStream();
        int r = 0;
        byte[] chunk = new byte[8192];
        while ((r = is.read(chunk)) != -1) {
            outs.write(chunk, 0, r);
        }
        outs.flush();
    } finally {
        IOUtils.closeQuietly(outs);
    }

}

From source file:com.arcadian.loginservlet.CourseContentServlet.java

@Override
protected void doGet(HttpServletRequest request, HttpServletResponse response)
        throws ServletException, IOException {
    if (request.getParameter("filename") != null) {
        String fileName = request.getParameter("filename");
        File file = new File(request.getServletContext().getAttribute("FILES_DIR") + File.separator + fileName);
        System.out.println("File location on server::" + file.getAbsolutePath());
        ServletContext ctx = getServletContext();
        InputStream fis = new FileInputStream(file);
        String mimeType = ctx.getMimeType(file.getAbsolutePath());
        System.out.println("mime type=" + mimeType);
        response.setContentType(mimeType != null ? mimeType : "application/octet-stream");
        response.setContentLength((int) file.length());
        response.setHeader("Content-Disposition", "attachment; filename=\"" + fileName + "\"");

        ServletOutputStream os = response.getOutputStream();
        byte[] bufferData = new byte[102400];
        int read = 0;
        while ((read = fis.read(bufferData)) != -1) {
            os.write(bufferData, 0, read);
        }//from   w w  w  . j av a2 s  .  c  om
        os.flush();
        os.close();
        fis.close();
        System.out.println("File downloaded at client successfully");
    }
    processRequest(request, response);
}

From source file:org.commoncrawl.service.listcrawler.ProxyServlet.java

private static void sendCrawlURLResponse(final HttpServletRequest req, final HttpServletResponse response,
        CrawlURL url, String renderAs, AsyncResponse responseObject, long requestStartTime) throws IOException {

    if (url.getLastAttemptResult() == CrawlURL.CrawlResult.SUCCESS) {

        // remove default headers ... 
        response.setHeader("Date", null);
        response.setHeader("Server", null);
        // set the result code ... 
        response.setStatus(200);/*from  www  .j  ava  2  s. com*/

        if (renderAs.equals(PROXY_RENDER_TYPE_TEXT)) {

            response.setHeader("content-type", "text/plain");

            // parse headers ... 
            NIOHttpHeaders headers = NIOHttpHeaders.parseHttpHeaders(url.getHeaders());

            PrintWriter writer = response.getWriter();

            writer.write(PROXY_HEADER_SOURCE + ":origin\n");
            writer.write(PROXY_HEADER_ORIG_STATUS + ":" + headers.getValue(0) + "\n");
            writer.write(PROXY_HEADER_TIMER + ":" + (System.currentTimeMillis() - requestStartTime) + "MS\n");
            writer.write(PROXY_HEADER_FINALURL + ":"
                    + (((url.getFlags() & CrawlURL.Flags.IsRedirected) != 0) ? url.getRedirectURL()
                            : url.getUrl())
                    + "\n");

            // and put then in a map ... 
            Map<String, List<String>> headerItems = NIOHttpHeaders.parseHttpHeaders(url.getHeaders())
                    .getHeaders();

            writer.write("content-length:" + Integer.toString(url.getContentRaw().getCount()) + "\n");

            // pull out content encoding if it is set ...
            String contentEncoding = headers.findValue("content-encoding");

            if (contentEncoding != null) {
                writer.write("content-encoding:" + contentEncoding + "\n");
            }

            String truncationFlags = "";
            if ((url.getFlags() & CrawlURL.Flags.TruncatedDuringDownload) != 0) {
                truncationFlags += ArcFileItem.Flags.toString(ArcFileItem.Flags.TruncatedInDownload);
            }
            if (truncationFlags.length() != 0) {
                writer.write(PROXY_HEADER_TRUNCATION + ":" + truncationFlags + "\n");
            }

            // now walk remaining headers ... 
            for (Map.Entry<String, List<String>> entry : headerItems.entrySet()) {
                // if not in exclusion list ... 
                if (entry.getKey() != null && entry.getKey().length() != 0) {
                    if (!dontProxyHeaders.contains(entry.getKey().toLowerCase())) {
                        // and it has values ... 
                        if (entry.getValue() != null) {
                            for (String value : entry.getValue()) {
                                writer.write(entry.getKey() + ":" + value + "\n");
                            }
                        }
                    } else {
                        if (entry.getKey().equalsIgnoreCase("content-length") && entry.getValue() != null) {
                            writer.write(
                                    PROXY_HEADER_ORIGINAL_CONTENT_LEN + ":" + entry.getValue().get(0) + "\n");
                        }
                    }
                }
            }
            writer.write("\n");

            int contentLength = url.getContentRaw().getCount();
            byte contentData[] = url.getContentRaw().getReadOnlyBytes();

            if (contentEncoding != null && contentEncoding.equalsIgnoreCase("gzip")) {
                UnzipResult result = GZIPUtils.unzipBestEffort(contentData,
                        CrawlEnvironment.CONTENT_SIZE_LIMIT);
                if (result != null) {
                    contentData = result.data.get();
                    contentLength = result.data.getCount();
                }
            }

            BufferedReader bufferedReader = readerForCharset(headers, contentData, contentLength, writer);

            try {
                String line = null;
                while ((line = bufferedReader.readLine()) != null) {
                    writer.println(line);
                }
            } finally {
                bufferedReader.close();
            }
            writer.flush();
        } else {

            response.setHeader(PROXY_HEADER_SOURCE, "origin");
            response.setHeader(PROXY_HEADER_TIMER, (System.currentTimeMillis() - requestStartTime) + "MS");
            response.setHeader(PROXY_HEADER_FINALURL,
                    (((url.getFlags() & CrawlURL.Flags.IsRedirected) != 0) ? url.getRedirectURL()
                            : url.getUrl()));

            // parse headers ... 
            NIOHttpHeaders headers = NIOHttpHeaders.parseHttpHeaders(url.getHeaders());
            // and put then in a map ... 
            Map<String, List<String>> headerItems = NIOHttpHeaders.parseHttpHeaders(url.getHeaders())
                    .getHeaders();

            // set the content length ... 
            response.setHeader("content-length", Integer.toString(url.getContentRaw().getCount()));

            String truncationFlags = "";
            if ((url.getFlags() & CrawlURL.Flags.TruncatedDuringDownload) != 0) {
                truncationFlags += ArcFileItem.Flags.toString(ArcFileItem.Flags.TruncatedInDownload);
            }
            if (truncationFlags.length() != 0) {
                response.setHeader(PROXY_HEADER_TRUNCATION, truncationFlags);
            }

            // pull out content encoding if it is set ...
            String contentEncoding = headers.findValue("content-encoding");

            if (contentEncoding != null) {
                response.setHeader("content-encoding", contentEncoding);
            }

            // now walk remaining headers ... 
            for (Map.Entry<String, List<String>> entry : headerItems.entrySet()) {
                // if not in exclusion list ... 
                if (entry.getKey() != null && entry.getKey().length() != 0) {
                    if (!dontProxyHeaders.contains(entry.getKey().toLowerCase())) {
                        // and it has values ... 
                        if (entry.getValue() != null) {
                            for (String value : entry.getValue()) {
                                response.setHeader(entry.getKey(), value);
                            }
                        }
                    } else {
                        if (entry.getKey().equalsIgnoreCase("content-length") && entry.getValue() != null) {
                            response.setHeader(PROXY_HEADER_ORIGINAL_CONTENT_LEN, entry.getValue().get(0));
                        }
                    }

                }
            }

            ServletOutputStream responseOutputStream = response.getOutputStream();
            // write out content bytes 
            responseOutputStream.write(url.getContentRaw().getReadOnlyBytes(), 0,
                    url.getContentRaw().getCount());
        }
    }
    // otherwise failed for some other reason ... 
    else {
        /*
        ProxyServer.getSingleton().logProxyFailure(500, CrawlURL.FailureReason.toString(url.getLastAttemptFailureReason()) + " - " + url.getLastAttemptFailureDetail(),
            url.getUrl(),
            url.getRedirectURL(),
            requestStartTime);
        */
        // report the reason ... 
        response.sendError(500, CrawlURL.FailureReason.toString(url.getLastAttemptFailureReason()) + " - "
                + url.getLastAttemptFailureDetail());
    }
}

From source file:coria2015.server.ContentServlet.java

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

    final URL url;
    IMAGE_URI = "/recipe/image/";
    if (request.getRequestURI().startsWith(IMAGE_URI)) {

        String recipeName = URLDecoder.decode(request.getRequestURI().substring(IMAGE_URI.length()), "UTF-8")
                .replace(" ", "-");
        String name = recipeImages.get(recipeName);
        File file = new File(imagePath, name);
        url = file.toURI().toURL();//from www . j a v a2 s.  c  o m
    } else {
        url = ContentServlet.class.getResource(format("/web%s", request.getRequestURI()));
    }

    if (url != null) {
        FileSystemManager fsManager = VFS.getManager();
        FileObject file = fsManager.resolveFile(url.toExternalForm());
        if (file.getType() == FileType.FOLDER) {
            response.setStatus(HttpServletResponse.SC_MOVED_PERMANENTLY);
            response.setHeader("Location", format("%sindex.html", request.getRequestURI()));
            return;
        }

        String filename = url.getFile();
        if (filename.endsWith(".html"))
            response.setContentType("text/html");
        else if (filename.endsWith(".png"))
            response.setContentType("image/png");
        else if (filename.endsWith(".css"))
            response.setContentType("text/css");
        response.setStatus(HttpServletResponse.SC_OK);

        final ServletOutputStream out = response.getOutputStream();
        InputStream in = url.openStream();
        byte[] buffer = new byte[8192];
        int read;
        while ((read = in.read(buffer)) > 0) {
            out.write(buffer, 0, read);
        }
        out.flush();
        in.close();
        return;
    }

    // Not found
    error404(request, response);

}

From source file:cz.incad.kramerius.audio.servlets.ServletAudioHttpRequestForwarder.java

private void forwardData(InputStream input, ServletOutputStream output) {
    try {/*ww  w  .  j av  a2s .  co  m*/
        byte[] buffer = new byte[BUFFER_SIZE];
        int bytesForwarded;
        while ((bytesForwarded = input.read(buffer)) != -1) {
            output.write(buffer, 0, bytesForwarded);
        }
    } catch (IOException ex) {
        if (ex.getCause() != null && ex.getCause() instanceof SocketException
                && (ex.getCause().getMessage().equals(CONNECTION_RESET)
                        || ex.getCause().getMessage().equals(BROKEN_PIPE))) {
            LOGGER.warning("Connection reset probably by client (or by repository)");
        } else {
            if (!"ClientAbortException".equals(ex.getClass().getSimpleName())) {
                LOGGER.log(Level.SEVERE, ex.getMessage(), ex);
            }
        }
    } finally {
        try {
            LOGGER.fine("closing connection to repository");
            input.close();
            //output stream should not be closed here because it is closed by container. 
            //If closed here, for example filters won't be able to write to stream anymore
        } catch (IOException ex1) {
            LOGGER.log(Level.SEVERE, "Failed to close connection to repository", ex1);
        }
    }
}