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:com.ppcxy.cyfm.showcase.demos.web.RemoteContentServlet.java

private void fetchContentByApacheHttpClient(HttpServletResponse response, String contentUrl)
        throws IOException {
    // ?//from  ww  w  . j a va2  s.  c  om
    HttpGet httpGet = new HttpGet(contentUrl);
    CloseableHttpResponse remoteResponse = httpClient.execute(httpGet);
    try {
        // 
        int statusCode = remoteResponse.getStatusLine().getStatusCode();
        if (statusCode >= 400) {
            response.sendError(statusCode, "fetch image error from " + contentUrl);
            return;
        }

        HttpEntity entity = remoteResponse.getEntity();

        // Header
        response.setContentType(entity.getContentType().getValue());
        if (entity.getContentLength() > 0) {
            response.setContentLength((int) entity.getContentLength());
        }
        // 
        InputStream input = entity.getContent();
        OutputStream output = response.getOutputStream();
        // byte?InputStreamOutputStream, ?4k.
        IOUtils.copy(input, output);
        output.flush();
    } finally {
        remoteResponse.close();
    }
}

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

/**
 * Handles the HTTP//from w w w . j  a  v  a 2  s .  c  om
 * <code>GET</code> method.
 *
 * @param request 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("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);
        }
        os.flush();
        os.close();
        fis.close();
        System.out.println("File downloaded at client successfully");
    }

    processRequest(request, response);
}

From source file:com.novartis.pcs.ontology.rest.servlet.TermsServlet.java

private void serialize(String referenceId, HttpServletResponse response) {
    try {//  w  ww.j  a  va 2  s  .c o m
        Term term = termDAO.loadByReferenceId(referenceId, true);

        response.setStatus(HttpServletResponse.SC_OK);
        response.setHeader("Access-Control-Allow-Origin", "*");
        response.setContentType(MEDIA_TYPE_JSON + ";charset=utf-8");
        response.setHeader("Cache-Control", "public, max-age=0");

        // As per jackson javadocs - Encoding will be UTF-8
        mapper.writeValue(response.getOutputStream(), term);
    } catch (EntityNotFoundException e) {
        log("Failed to find term with reference id: " + referenceId, e);
        response.setStatus(HttpServletResponse.SC_NOT_FOUND);
        response.setContentLength(0);
    } catch (Exception e) {
        log("Failed to serialize term to JSON", e);
        response.setStatus(HttpServletResponse.SC_INTERNAL_SERVER_ERROR);
        response.setContentLength(0);
    }
}

From source file:ch.entwine.weblounge.common.impl.request.Http11ProtocolHandler.java

/**
 * Method generateHeaders.//  w w  w . j av a 2 s  .  c o m
 * 
 * @param resp
 * @param type
 */
public static void generateHeaders(HttpServletResponse resp, Http11ResponseType type) {

    /* generate headers only once! */
    if (type.headers)
        return;
    type.headers = true;

    /* adjust the statistics */
    ++stats[STATS_HEADER_GENERATED];
    incResponseStats(type.type, headerStats);

    /* set the date header */
    resp.setDateHeader(HEADER_DATE, type.time);

    /* check expires */
    if (type.expires > type.time + MS_PER_YEAR) {
        type.expires = type.time + MS_PER_YEAR;
        log.warn("Expiration date too far in the future. Adjusting.");
    }

    /* set the standard headers and status code */
    switch (type.type) {
    case RESPONSE_PARTIAL_CONTENT:
        if (type.expires > type.time)
            resp.setDateHeader(HEADER_EXPIRES, type.expires);
        if (type.modified > 0) {
            resp.setHeader(HEADER_ETAG, Http11Utils.calcETag(type.modified));
            resp.setDateHeader(HEADER_LAST_MODIFIED, type.modified);
        }
        if (type.size < 0 || type.from < 0 || type.to < 0 || type.from > type.to || type.to > type.size) {
            resp.setStatus(HttpServletResponse.SC_INTERNAL_SERVER_ERROR);
            break;
        }
        resp.setContentLength((int) type.size);
        resp.setHeader(HEADER_CONTENT_RANGE, "bytes " + type.from + "-" + type.to + "/" + type.size);
        resp.setStatus(HttpServletResponse.SC_PARTIAL_CONTENT);
        break;

    case RESPONSE_OK:
        if (type.expires > type.time) {
            resp.setDateHeader(HEADER_EXPIRES, type.expires);
        } else if (type.expires == 0) {
            resp.setHeader(HEADER_CACHE_CONTROL, "no-cache");
            resp.setHeader(HEADER_PRAGMA, "no-cache");
            resp.setDateHeader(HEADER_EXPIRES, 0);
        }
        if (type.modified > 0) {
            resp.setHeader(HEADER_ETAG, Http11Utils.calcETag(type.modified));
            resp.setDateHeader(HEADER_LAST_MODIFIED, type.modified);
        }
        if (type.size >= 0)
            resp.setContentLength((int) type.size);
        resp.setStatus(HttpServletResponse.SC_OK);
        break;

    case RESPONSE_NOT_MODIFIED:
        if (type.expires > type.time)
            resp.setDateHeader(HEADER_EXPIRES, type.expires);
        if (type.modified > 0)
            resp.setHeader(HEADER_ETAG, Http11Utils.calcETag(type.modified));
        resp.setStatus(HttpServletResponse.SC_NOT_MODIFIED);
        break;

    case RESPONSE_METHOD_NOT_ALLOWED:
        resp.setHeader(HEADER_ALLOW, "GET, POST, HEAD");
        resp.setStatus(HttpServletResponse.SC_METHOD_NOT_ALLOWED);
        break;

    case RESPONSE_PRECONDITION_FAILED:
        if (type.expires > type.time)
            resp.setDateHeader(HEADER_EXPIRES, type.expires);
        if (type.modified > 0) {
            resp.setHeader(HEADER_ETAG, Http11Utils.calcETag(type.modified));
            resp.setDateHeader(HEADER_LAST_MODIFIED, type.modified);
        }
        resp.setStatus(HttpServletResponse.SC_PRECONDITION_FAILED);
        break;

    case RESPONSE_REQUESTED_RANGE_NOT_SATISFIABLE:
        if (type.expires > type.time)
            resp.setDateHeader(HEADER_EXPIRES, type.expires);
        if (type.modified > 0) {
            resp.setHeader(HEADER_ETAG, Http11Utils.calcETag(type.modified));
            resp.setDateHeader(HEADER_LAST_MODIFIED, type.modified);
        }
        if (type.size >= 0)
            resp.setHeader(HEADER_CONTENT_RANGE, "*/" + type.size);
        break;

    case RESPONSE_INTERNAL_SERVER_ERROR:
    default:
        resp.setStatus(HttpServletResponse.SC_INTERNAL_SERVER_ERROR);
    }
}

From source file:com.googlesource.gerrit.plugins.github.velocity.VelocityStaticServlet.java

@Override
protected void doGet(final HttpServletRequest req, final HttpServletResponse rsp) throws IOException {
    final Resource p = local(req);
    if (p == null) {
        CacheHeaders.setNotCacheable(rsp);
        rsp.setStatus(HttpServletResponse.SC_NOT_FOUND);
        return;/*from  www .j  a  v a2  s.  c  om*/
    }

    final String type = contentType(p.getName());
    final byte[] tosend;
    if (!type.equals("application/x-javascript") && RPCServletUtils.acceptsGzipEncoding(req)) {
        rsp.setHeader("Content-Encoding", "gzip");
        tosend = compress(readResource(p));
    } else {
        tosend = readResource(p);
    }

    CacheHeaders.setCacheable(req, rsp, 12, TimeUnit.HOURS);
    rsp.setDateHeader("Last-Modified", p.getLastModified());
    rsp.setContentType(type);
    rsp.setContentLength(tosend.length);
    final OutputStream out = rsp.getOutputStream();
    try {
        out.write(tosend);
    } finally {
        out.close();
    }
}

From source file:fr.ortolang.diffusion.api.format.MetadataFormatResource.java

@GET
@Path("/download")
public void download(final @QueryParam(value = "id") String id, final @QueryParam(value = "name") String name,
        @Context HttpServletResponse response) throws OrtolangException, CoreServiceException,
        DataNotFoundException, IOException, BinaryStoreServiceException {
    LOGGER.log(Level.INFO, "GET /metadataformats/download");

    MetadataFormat format;/*w w  w  . j  a  va 2 s.co m*/
    if (id != null && id.length() > 0) {
        format = core.findMetadataFormatById(id);
    } else if (name != null && name.length() > 0) {
        format = core.getMetadataFormat(name);
    } else {
        throw new DataNotFoundException("either id or name must be provided in order to find metadata format");
    }
    if (format != null) {
        response.setHeader("Content-Disposition", "attachment; filename=" + format.getName());
        response.setContentType(format.getMimeType());
        response.setContentLength((int) format.getSize());
        InputStream input = store.get(format.getSchema());
        try {
            IOUtils.copy(input, response.getOutputStream());
        } finally {
            IOUtils.closeQuietly(input);
        }
    } else {
        throw new DataNotFoundException("unable to find a metadata format for this name or this id");
    }

}

From source file:de.ifgi.mosia.wpswfs.handler.ProxyRequestHandler.java

protected void writeResponse(String filteredContent, String enc, Header contentType, int statusCode,
        HttpServletResponse resp) throws IOException {
    if (enc == null) {
        enc = "UTF-8";
    }//from   www.j  a  v a2 s.  co m

    byte[] bytes;
    if (statusCode == HttpStatus.SC_NO_CONTENT) {
        bytes = new byte[0];
    } else if (filteredContent == null) {
        /*
         * recursive call end exit
         */
        writeResponse(new ExceptionReportWrapper(new IOException("Proxy server issue")).toXML(), "UTF-8",
                new BasicHeader("Content-Type", "application/xml"), HttpStatus.SC_INTERNAL_SERVER_ERROR, resp);
        return;
    } else {
        bytes = filteredContent.getBytes(enc);
    }

    resp.setContentType(contentType == null ? "application/xml" : contentType.getValue());
    resp.setCharacterEncoding(enc);
    resp.setContentLength(bytes.length);

    resp.setStatus(statusCode);

    resp.getOutputStream().write(bytes);
    resp.getOutputStream().flush();
}

From source file:com.qcadoo.report.internal.controller.ReportController.java

@RequestMapping(value = "generateSavedReport/{plugin}/{model}", method = RequestMethod.GET)
public void generateSavedReport(@PathVariable("plugin") final String plugin,
        @PathVariable("model") final String model, @RequestParam("id") final String id,
        @RequestParam(value = "reportNo", required = false, defaultValue = "0") final String reportNo,
        final HttpServletRequest request, final HttpServletResponse response) throws ReportException {
    ReportService.ReportType reportType = getReportType(request);
    Entity entity = dataDefinitionService.get(plugin, model).get(Long.parseLong(id));

    String filename = entity.getStringField("fileName").split(",")[Integer.valueOf(reportNo)];

    String translatedFileName = filename.substring(filename.lastIndexOf(File.separator) + 1) + "."
            + reportType.getExtension();

    response.setHeader("Content-disposition", "inline; filename=" + translatedFileName);
    response.setContentType(reportType.getMimeType());
    try {/*from   w w  w  . jav a 2  s.  c o  m*/
        int bytes = copy(new FileInputStream(new File(filename + "." + reportType.getExtension())),
                response.getOutputStream());

        response.setContentLength(bytes);

    } catch (IOException e) {
        throw new IllegalStateException(e.getMessage(), e);
    }
}

From source file:org.xmlactions.web.conceal.HttpPager.java

private String serviceJasperPdfRequest(HttpServletResponse response, byte[] pdfImage,
        String outputPdfFileName) {

    InputStream inputStream = null;
    OutputStream responseOutputStream = null;
    try {/*from  w w w . jav a2s. com*/
        response.setContentType("application/pdf");
        response.addHeader("Content-Disposition", "attachment; filename=" + outputPdfFileName);
        response.setContentLength(pdfImage.length);

        inputStream = new ByteArrayInputStream(pdfImage);
        responseOutputStream = response.getOutputStream();
        int bytes;
        while ((bytes = inputStream.read()) != -1) {
            responseOutputStream.write(bytes);
        }
    } catch (Exception ex) {
        return ("EX:" + ex.getMessage());
    } finally {
        IOUtils.closeQuietly(inputStream);
        // IOUtils.closeQuietly(responseOutputStream);
    }
    return null;
}

From source file:architecture.ee.web.spring.controller.SecureDownloadController.java

@RequestMapping(value = "/logo/{logoId}", method = RequestMethod.GET)
@ResponseBody//from w  ww  .j  a va 2s  .  c o  m
public void handleLogo(@PathVariable("logoId") Long logoId,
        @RequestParam(value = "width", defaultValue = "0", required = false) Integer width,
        @RequestParam(value = "height", defaultValue = "0", required = false) Integer height,
        HttpServletResponse response) throws IOException {

    try {
        LogoImage image = logoManager.getLogoImageById(logoId);

        if (image != null) {
            InputStream input;
            String contentType;
            int contentLength;
            if (width > 0 && width > 0) {
                input = logoManager.getImageThumbnailInputStream(image, width, height);
                contentType = image.getThumbnailContentType();
                contentLength = image.getThumbnailSize();
            } else {
                input = logoManager.getImageInputStream(image);
                contentType = image.getImageContentType();
                contentLength = image.getImageSize();
            }
            response.setContentType(contentType);
            response.setContentLength(contentLength);
            IOUtils.copy(input, response.getOutputStream());
            response.flushBuffer();
        }

    } catch (Exception e) {
        log.warn(e);
        response.setStatus(301);
        String url = ApplicationHelper.getApplicationProperty("components.download.images.no-logo-url",
                "/images/common/what-to-know-before-getting-logo-design.png");
        response.addHeader("Location", url);
    }
}