Example usage for javax.servlet.http HttpServletResponse setContentLength

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

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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:org.jamwiki.servlets.ImageServlet.java

/**
 * Serve a file from the filesystem.  This is less efficient than serving the file
 * directly via Tomcat or Apache, but allows files to be stored outside of the
 * webapp and thus keeps wiki data (files) separate from application code.
 *///from   w  ww. ja v a2s.co  m
private void streamFileFromFileSystem(File file, HttpServletResponse response)
        throws ServletException, IOException {
    ServletOutputStream out = null;
    InputStream in = null;
    if (file.isDirectory() || !file.canRead()) {
        logger.debug("File does not exist: " + file.getAbsolutePath());
        response.setStatus(HttpServletResponse.SC_NOT_FOUND);
        return;
    }
    String mimeType = getServletContext().getMimeType(file.getAbsolutePath());
    if (mimeType == null) {
        mimeType = WikiFile.UNKNOWN_MIME_TYPE;
    }
    try {
        response.setContentType(mimeType);
        response.setContentLength((int) file.length());
        out = response.getOutputStream();
        in = new FileInputStream(file);
        IOUtils.copy(in, out);
        out.flush();
    } finally {
        IOUtils.closeQuietly(in);
        IOUtils.closeQuietly(out);
    }
}

From source file:org.apache.ofbiz.base.util.UtilHttp.java

/**
 * Stream an array of bytes to the browser
 * This method will close the ServletOutputStream when finished
 *
 * @param response HttpServletResponse object to get OutputStream from
 * @param bytes Byte array of content to stream
 * @param contentType The content type to pass to the browser
 * @param fileName the fileName to tell the browser we are downloading
 * @throws IOException// w ww.  j  a  v  a  2 s  .  c om
 */
public static void streamContentToBrowser(HttpServletResponse response, byte[] bytes, String contentType,
        String fileName) throws IOException {
    // tell the browser not the cache
    setResponseBrowserProxyNoCache(response);

    // set the response info
    response.setContentLength(bytes.length);
    if (contentType != null) {
        response.setContentType(contentType);
    }
    if (fileName != null) {
        setContentDisposition(response, fileName);
    }

    // create the streams
    OutputStream out = response.getOutputStream();
    InputStream in = new ByteArrayInputStream(bytes);

    // stream the content
    try {
        streamContent(out, in, bytes.length);
    } catch (IOException e) {
        in.close();
        out.close(); // should we close the ServletOutputStream on error??
        throw e;
    }

    // close the input stream
    in.close();

    // close the servlet output stream
    out.flush();
    out.close();
}

From source file:com.eviware.soapui.impl.wsdl.mock.WsdlMockRunner.java

public void returnFile(HttpServletResponse response, File file) throws FileNotFoundException, IOException {
    FileInputStream in = new FileInputStream(file);
    response.setStatus(HttpServletResponse.SC_OK);
    long length = file.length();
    response.setContentLength((int) length);
    response.setContentType(ContentTypeHandler.getContentTypeFromFilename(file.getName()));
    Tools.readAndWrite(in, length, response.getOutputStream());
    in.close();/*from ww w.j a  v a  2  s .c  o m*/
}

From source file:net.duckling.ddl.web.controller.pan.PanShareDownloadController.java

private void sendPreviewDoc(String filename, long size, String panShareId, HttpServletRequest request,
        HttpServletResponse response) {
    OutputStream os = null;/*from   w  w w  .j  a  v  a 2s. c o  m*/
    long p0 = System.currentTimeMillis();
    long tmpSize = size;
    try {
        response.setCharacterEncoding("utf-8");
        String headerValue = ResponseHeaderUtils.buildResponseHeader(request, filename, true);
        response.setContentType("application/x-download");
        response.setHeader("Content-Disposition", headerValue);
        response.setContentLength((int) size);
        response.setHeader("Content-Length", tmpSize + "");
        os = response.getOutputStream();
        panService.getShareContent(panShareId, null, os);
    } catch (UnsupportedEncodingException e) {
        LOG.error("", e);
    } catch (MeePoException e) {
        LOG.error("", e);
    } catch (IOException e) {
        LOG.error("", e);
    } catch (Exception e) {
        LOG.error("", e);
    } finally {
        IOUtils.closeQuietly(os);
        long p1 = System.currentTimeMillis();
        LOG.info("Download document[name:" + filename + ",size:" + tmpSize + "] use time " + (p1 - p0));
    }

}

From source file:org.apache.ofbiz.base.util.UtilHttp.java

/**
 * Streams content from InputStream to the ServletOutputStream
 * This method will close the ServletOutputStream when finished
 * This method does not close the InputSteam passed
 *
 * @param response HttpServletResponse object to get OutputStream from
 * @param in InputStream of the actual content
 * @param length Size (in bytes) of the content
 * @param contentType The content type to pass to the browser
 * @throws IOException//  w w w. j  a  va  2s .c  o m
 */
public static void streamContentToBrowser(HttpServletResponse response, InputStream in, int length,
        String contentType, String fileName) throws IOException {
    // tell the browser not the cache
    setResponseBrowserProxyNoCache(response);

    // set the response info
    response.setContentLength(length);
    if (contentType != null) {
        response.setContentType(contentType);
    }
    if (fileName != null) {
        setContentDisposition(response, fileName);
    }

    // stream the content
    OutputStream out = response.getOutputStream();
    try {
        streamContent(out, in, length);
    } catch (IOException e) {
        out.close();
        throw e;
    }

    // close the servlet output stream
    out.flush();
    out.close();
}

From source file:be.fedict.eid.applet.service.PdfServlet.java

@Override
protected void doGet(HttpServletRequest request, HttpServletResponse response)
        throws ServletException, IOException {
    LOG.debug("doGet");

    HttpSession httpSession = request.getSession();
    EIdData eIdData = (EIdData) httpSession.getAttribute("eid");

    byte[] document;
    try {//from  w  w  w .  ja v a2  s. co  m
        document = this.pdfGenerator.generatePdf(eIdData);
    } catch (DocumentException e) {
        throw new ServletException("PDF generator error: " + e.getMessage(), e);
    }

    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(document.length);
    ServletOutputStream out = response.getOutputStream();
    out.write(document);
    out.flush();
}

From source file:be.fedict.eid.applet.service.VcardServlet.java

@Override
protected void doGet(HttpServletRequest request, HttpServletResponse response)
        throws ServletException, IOException {
    LOG.debug("doGet");

    HttpSession httpSession = request.getSession();
    EIdData eIdData = (EIdData) httpSession.getAttribute("eid");

    byte[] document;
    try {// w  w  w  . ja v a2  s  .c  o m
        document = this.vcardGenerator.generateVcard(eIdData);
    } catch (IOException e) {
        throw new ServletException("vCard generator error: " + e.getMessage(), e);
    }

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

    response.setContentType(VcardLight.MIME_TYPE);
    response.setContentLength(document.length);
    ServletOutputStream out = response.getOutputStream();
    out.write(document);
    out.flush();
}

From source file:es.ucm.fdi.storage.web.StorageController.java

@RequestMapping(method = RequestMethod.GET, value = "/storage/**")
public void servirArchivos(HttpServletRequest request, HttpServletResponse response) throws IOException {
    String ctxPath = request.getContextPath();
    String objectId = request.getRequestURI();
    objectId = objectId.substring(ctxPath.length() + "/storage/".length());
    int pos = objectId.indexOf('/');
    if (pos < 0) {
        response.sendError(400, "Upps");
        return;//from   w  w  w .j a v  a  2 s .  c  o m
    }
    String bucket = objectId.substring(0, pos);
    String key = objectId.substring(pos + 1);
    StorageObject object = storage.getObject(bucket, key);
    String mimeType = object.getMimeType();
    long length = object.getContentLength();

    // set content attributes for the response
    response.setContentType(mimeType);
    response.setContentLength((int) length);

    try {
        object.transferTo(response.getOutputStream());
        response.flushBuffer();
    } catch (IOException ex) {
        logger.error("Error writing file to output stream. bucket=>'{}', key=>'{}'", bucket, key, ex);
        response.sendError(500, "Upps");
    }
}

From source file:com.pdfhow.diff.UploadServlet.java

/**
 * Handles the HTTP <code>GET</code> method.
 *
 * @param request/*from  w w w .  j a v a 2s .  c om*/
 *            servlet request
 * @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 {
    if (request.getParameter("getfile") != null && !request.getParameter("getfile").isEmpty()) {
        File file = new File(
                request.getServletContext().getRealPath("/") + "imgs/" + request.getParameter("getfile"));
        if (file.exists()) {
            int bytes = 0;
            ServletOutputStream op = response.getOutputStream();

            response.setContentType(getMimeType(file));
            response.setContentLength((int) file.length());
            response.setHeader("Content-Disposition", "inline; filename=\"" + file.getName() + "\"");

            byte[] bbuf = new byte[1024];
            DataInputStream in = new DataInputStream(new FileInputStream(file));

            while ((in != null) && ((bytes = in.read(bbuf)) != -1)) {
                op.write(bbuf, 0, bytes);
            }

            in.close();
            op.flush();
            op.close();
        }
    } else if (request.getParameter("delfile") != null && !request.getParameter("delfile").isEmpty()) {
        File file = new File(
                request.getServletContext().getRealPath("/") + "imgs/" + request.getParameter("delfile"));
        if (file.exists()) {
            file.delete(); // TODO:check and report success
        }
    } else if (request.getParameter("getthumb") != null && !request.getParameter("getthumb").isEmpty()) {
        File file = new File(
                request.getServletContext().getRealPath("/") + "imgs/" + request.getParameter("getthumb"));
        if (file.exists()) {
            System.out.println(file.getAbsolutePath());
            String mimetype = getMimeType(file);
            if (mimetype.endsWith("png") || mimetype.endsWith("jpeg") || mimetype.endsWith("jpg")
                    || mimetype.endsWith("gif")) {
                BufferedImage im = ImageIO.read(file);
                if (im != null) {
                    BufferedImage thumb = Scalr.resize(im, 75);
                    ByteArrayOutputStream os = new ByteArrayOutputStream();
                    if (mimetype.endsWith("png")) {
                        ImageIO.write(thumb, "PNG", os);
                        response.setContentType("image/png");
                    } else if (mimetype.endsWith("jpeg")) {
                        ImageIO.write(thumb, "jpg", os);
                        response.setContentType("image/jpeg");
                    } else if (mimetype.endsWith("jpg")) {
                        ImageIO.write(thumb, "jpg", os);
                        response.setContentType("image/jpeg");
                    } else {
                        ImageIO.write(thumb, "GIF", os);
                        response.setContentType("image/gif");
                    }
                    ServletOutputStream srvos = response.getOutputStream();
                    response.setContentLength(os.size());
                    response.setHeader("Content-Disposition", "inline; filename=\"" + file.getName() + "\"");
                    os.writeTo(srvos);
                    srvos.flush();
                    srvos.close();
                }
            }
        } // TODO: check and report success
    } else {
        PrintWriter writer = response.getWriter();
        writer.write("call POST with multipart form data");
    }
}

From source file:com.orangeandbronze.jblubble.sample.PersonController.java

@RequestMapping(method = RequestMethod.GET, value = "/{id}/photo")
public void servePhoto(@PathVariable("id") String id, WebRequest webRequest, HttpServletResponse response)
        throws BlobstoreException, IOException {
    Person person = getPersonById(id);//from   w w w  .j av  a 2 s  .  c  om
    if (person != null) {
        BlobKey photoId = person.getPhotoId();
        if (photoId != null) {
            BlobInfo blobInfo = blobstoreService.getBlobInfo(photoId);
            if (webRequest.checkNotModified(blobInfo.getDateCreated().getTime())) {
                return;
            }
            response.setContentType(blobInfo.getContentType());
            // In Servlet API 3.1, use #setContentLengthLong(long)
            response.setContentLength((int) blobInfo.getSize());
            response.setDateHeader("Last-Modified", blobInfo.getDateCreated().getTime());
            // response.addHeader("Cache-Control", "must-revalidate, max-age=3600");
            blobstoreService.serveBlob(photoId, response.getOutputStream());
            return;
        }
    }
    throw new IllegalArgumentException();
}