Example usage for javax.servlet.http HttpServletResponse 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.denimgroup.threadfix.webapp.controller.ToolsDownloadController.java

private String doDownload(HttpServletRequest request, HttpServletResponse response, String jarName) {

    String jarResource = JAR_DOWNLOAD_DIR + jarName;

    InputStream in = request.getServletContext().getResourceAsStream(jarResource);
    if (in == null) {
        exceptionLogService.storeExceptionLog(
                new ExceptionLog(new FileNotFoundException("File not found for download: " + jarResource)));
        return index();
    }/*from   www. ja v a  2  s.c o  m*/

    try {
        ServletOutputStream out = response.getOutputStream();
        int jarSize = request.getServletContext().getResource(jarResource).openConnection().getContentLength();

        if (jarName.endsWith(".jar"))
            response.setContentType("application/java-archive");
        else
            response.setContentType("application/octet-stream");
        ;
        response.setContentLength(jarSize);
        response.addHeader("Content-Disposition", "attachment; filename=\"" + jarName + "\"");

        IOUtils.copy(in, out);
        in.close();
        out.flush();
        out.close();
    } catch (IOException ioe) {
        exceptionLogService.storeExceptionLog(new ExceptionLog(ioe));
        return index();
    }
    return null;
}

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From source file:guru.nidi.ramlproxy.core.MockServlet.java

@Override
protected void service(HttpServletRequest req, HttpServletResponse res) throws ServletException, IOException {
    final String pathInfo = req.getPathInfo();
    final int pos = pathInfo.lastIndexOf('/');
    final String path = pathInfo.substring(1, pos + 1);
    final String name = pathInfo.substring(pos + 1);
    final ServletOutputStream out = res.getOutputStream();
    final File targetDir = new File(mockDir, path);
    final File file = findFileOrParent(targetDir, name, req.getMethod());
    CommandDecorators.ALLOW_ORIGIN.set(req, res);
    if (file == null) {
        res.sendError(HttpServletResponse.SC_NOT_FOUND,
                "No or multiple file '" + name + "' found in directory '" + targetDir.getAbsolutePath() + "'");
        return;// ww w  .j av a 2s. c  o  m
    }
    handleMeta(req, res, file.getParentFile(), file.getName());
    res.setContentLength((int) file.length());
    res.setContentType(mineType(file));
    try (final InputStream in = new FileInputStream(file)) {
        copy(in, out);
    } catch (IOException e) {
        res.sendError(HttpServletResponse.SC_INTERNAL_SERVER_ERROR,
                "Problem delivering file '" + file.getAbsolutePath() + "': " + e);
    }
    out.flush();
}

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From source file:org.gallery.web.controller.ImageController.java

@RequestMapping(value = "/thumbnail/{id}", params = { "size" }, method = RequestMethod.GET)
public void thumbnail(HttpServletResponse response, @PathVariable Long id, @RequestParam("size") int size) {
    ImageEntity entity = imageDao.getById(id);
    ThumbnailSize thumbnail_Enum = ThumbnailSize.valueOf(size);
    log.debug("size: %d", new Object[] { thumbnail_Enum.getSize() });
    String thumbnailFilename = thumbnail_Enum.getId() + entity.getNewFilename() + "."
            + thumbnail_Enum.getFormatName();

    File imageFile = new File(fileUploadDirectory + File.separatorChar + thumbnailFilename);

    response.setContentType("image/" + thumbnail_Enum.getFormatName());
    response.setContentLength((int) imageFile.length());
    try {/*from  w w w  . j  a  v  a2  s  . co  m*/
        InputStream is = new FileInputStream(imageFile);
        IOUtils.copy(is, response.getOutputStream());
        // IOUtils.copy(is, new
        // FileOutputStream("c:\\tmp\\thumbnail-"+thumbnail_Enum.getId()+"."+thumbnail_Enum.getFormatName()));
    } catch (IOException e) {
        log.error("Could not show thumbnail:" + id, e);
    }
}

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From source file:de.yaio.services.webshot.server.controller.WebshotProvider.java

public void downloadResultFile(HttpServletRequest request, HttpServletResponse response, File downloadFile)
        throws IOException {
    // construct the complete absolute path of the file
    FileInputStream inputStream = new FileInputStream(downloadFile);

    // get MIME type of the file
    ServletContext context = request.getServletContext();
    String mimeType = context.getMimeType(downloadFile.getAbsolutePath());

    if (mimeType == null) {
        // set to binary type if MIME mapping not found
        mimeType = "application/octet-stream";
    }/*from   w  w  w . j av  a 2s . com*/
    if (LOGGER.isDebugEnabled()) {
        LOGGER.debug("MIME type: " + mimeType);
    }

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

    // set headers for the response
    String headerKey = "Content-Disposition";
    String headerValue = String.format("attachment; filename=\"%s\"", downloadFile.getName());
    response.setHeader(headerKey, headerValue);

    // get output stream of the response
    OutputStream outStream = response.getOutputStream();

    byte[] buffer = new byte[BUFFER_SIZE];
    int bytesRead = -1;

    // write bytes read from the input stream into the output stream
    while ((bytesRead = inputStream.read(buffer)) != -1) {
        outStream.write(buffer, 0, bytesRead);
    }

    inputStream.close();
    outStream.close();
}

---

From source file:com.eryansky.common.web.servlet.RemoteContentServlet.java

private void fetchContentByJDKConnection(HttpServletResponse response, String contentUrl) throws IOException {

    HttpURLConnection connection = (HttpURLConnection) new URL(contentUrl).openConnection();
    // Socket//from  w  ww.j a v  a  2 s .  com
    connection.setReadTimeout(TIMEOUT_SECONDS * 1000);
    try {
        connection.connect();

        // ?
        InputStream input;
        try {
            input = connection.getInputStream();
        } catch (FileNotFoundException e) {
            response.sendError(HttpServletResponse.SC_NOT_FOUND, contentUrl + " is not found.");
            return;
        }

        // Header
        response.setContentType(connection.getContentType());
        if (connection.getContentLength() > 0) {
            response.setContentLength(connection.getContentLength());
        }

        // 
        OutputStream output = response.getOutputStream();
        try {
            // byte?InputStreamOutputStream, ?4k.
            IOUtils.copy(input, output);
            output.flush();
        } finally {
            // ??InputStream.
            IOUtils.closeQuietly(input);
        }
    } finally {
        connection.disconnect();
    }
}

---

From source file:annis.gui.servlets.BinaryServlet.java

private void responseStatus200(WebResource binaryRes, String mimeType, ServletOutputStream out,
        HttpServletResponse response) throws RemoteException, IOException {

    List<AnnisBinaryMetaData> allMeta = binaryRes.path("meta").get(new AnnisBinaryMetaDataListType());

    if (allMeta.size() > 0) {
        AnnisBinaryMetaData binaryMeta = allMeta.get(0);
        for (AnnisBinaryMetaData m : allMeta) {
            if (mimeType.equals(m.getMimeType())) {
                binaryMeta = m;//  ww w .j a  v a2s  . c om
                break;
            }
        }

        response.setStatus(200);
        response.setHeader("Accept-Ranges", "bytes");
        response.setContentType(binaryMeta.getMimeType());
        response.setHeader("Content-Range",
                "bytes 0-" + (binaryMeta.getLength() - 1) + "/" + binaryMeta.getLength());
        response.setContentLength(binaryMeta.getLength());

        getCompleteFile(binaryRes, mimeType, out);
    }
}

---

From source file:org.shredzone.cilla.view.ResourceView.java

/**
 * Streams a resource.//from ww  w  .j  ava 2 s. c  o m
 */
@View(pattern = "/resource/${#package}/${#name}", name = "resource")
public void resourceView(@PathPart("#package") String pack, @PathPart("#name") String name,
        HttpServletRequest req, HttpServletResponse resp) throws ViewException {
    if (pack.indexOf("..") > -1 || pack.indexOf('/') > -1 || name.indexOf("..") > -1
            || name.indexOf('/') > -1) {
        throw new PageNotFoundException("resource '" + pack + '/' + name + "' not found");
    }

    try {
        String key = setup(pack, name);

        String resourceEtag = etagMap.get(key);
        resp.setHeader("ETag", resourceEtag);

        String headerEtag = req.getHeader("If-None-Match");

        if (headerEtag != null && headerEtag.equals(resourceEtag)) {
            throw new ErrorResponseException(HttpServletResponse.SC_NOT_MODIFIED);
        }

        if (isNotModifiedSince(req, lastModified)) {
            throw new ErrorResponseException(HttpServletResponse.SC_NOT_MODIFIED);
        }

        resp.setContentLength(sizeMap.get(key));
        resp.setDateHeader("Last-Modified", lastModified.getTime());

        try (InputStream in = ResourceView.class.getResourceAsStream("/public/" + pack + '/' + name)) {
            FileCopyUtils.copy(in, resp.getOutputStream());
        }

    } catch (IOException ex) {
        throw new PageNotFoundException("resource '" + pack + '/' + name + "' not found");
    }
}

---

From source file:org.geowebcache.GeoWebCacheDispatcher.java

private void writeFixedResponse(HttpServletResponse response, int httpCode, String contentType,
        Resource resource, CacheResult cacheRes, int contentLength) {

    response.setStatus(httpCode);/* ww  w . j a va 2  s .co m*/
    response.setContentType(contentType);

    response.setContentLength((int) contentLength);
    if (resource != null) {
        try {
            OutputStream os = response.getOutputStream();
            resource.transferTo(Channels.newChannel(os));

            runtimeStats.log(contentLength, cacheRes);

        } catch (IOException ioe) {
            log.debug("Caught IOException: " + ioe.getMessage() + "\n\n" + ioe.toString());
        }
    }
}

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From source file:no.dusken.common.view.FileView.java

protected void renderMergedOutputModel(Map map, HttpServletRequest request, HttpServletResponse response)
        throws IOException {
    // get the file from the map
    File file = (File) map.get("file");

    // check if it exists
    if (file == null || !file.exists() || !file.canRead()) {
        log.warn("Error reading: {}", file);
        try {// w  ww . ja  v a  2s  .c o  m
            response.sendError(404);
        } catch (IOException e) {
            log.error("Could not write to response", e);
        }
        return;
    }
    // give some info in the response
    String mimeType;
    if (file.getName().contains(".image")) {
        mimeType = "image/jpeg";

    } else {
        mimeType = getServletContext().getMimeType(file.getAbsolutePath());
    }
    response.setContentType(mimeType);
    // files does not change so often, allow three days caching
    response.setHeader("Cache-Control", "public, max-age=2505600");
    response.setContentLength((int) file.length());

    // start writing to the response
    OutputStream outputStream = response.getOutputStream();
    InputStream inputStream = new FileInputStream(file);
    IOUtils.copy(inputStream, outputStream);
}

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From source file:cn.lhfei.fu.web.controller.TeacherController.java

/**
 * Method for handling file download request from client
 */// w  ww . jav  a 2  s  .  c o m
@RequestMapping(value = "downloadImg", method = RequestMethod.GET)
public void downloadImg(HttpServletRequest request, HttpServletResponse response, @RequestParam("id") int id)
        throws IOException {
    try {
        HomeworkArchive homeworkArchive = homeworkArchiveService.read(id);
        if (null != homeworkArchive) {
            File file = new File(homeworkArchive.getArchivePath());
            String fileName = homeworkArchive.getArchiveName();
            //fileName = java.net.URLEncoder.encode(fileName,"UTF-8");
            // get your file as InputStream
            InputStream is = new FileInputStream(file);
            response.setContentType("application/image;charset=UTF-8");
            response.setContentLength(new Long(file.length()).intValue());
            response.setHeader("Content-Disposition",
                    "attachment; filename=" + fileName + ".jpg; charset=UTF-8");

            // copy it to response's OutputStream
            org.apache.commons.io.IOUtils.copy(is, response.getOutputStream());
            response.flushBuffer();
        }
    } catch (IOException ex) {
        log.error(ex.getMessage(), ex);
        throw new RuntimeException("IOError writing file to output stream", ex);
    }
}

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