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:OutSimplePdf.java

public void makePdf(HttpServletRequest request, HttpServletResponse response, String methodGetPost) {
    try {//from   www .j  a va  2 s. c  om
        Document document = new Document();
        ByteArrayOutputStream baos = new ByteArrayOutputStream();
        PdfWriter.getInstance(document, baos);
        document.open();
        document.add(new Paragraph("some text"));
        document.close();

        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(baos.size());

        ServletOutputStream out = response.getOutputStream();
        baos.writeTo(out);
        out.flush();

    } catch (Exception e2) {
        System.out.println("Error in " + getClass().getName() + "\n" + e2);
    }
}

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From source file:org.kaaproject.kaa.sandbox.web.servlet.ProjectFileServlet.java

@Override
public void doGet(HttpServletRequest request, HttpServletResponse response)
        throws ServletException, IOException {
    ProjectDataKey key = extractKey(request);
    if (key != null) {
        try {/*from  w  ww  . j a  v a 2s. com*/
            FileData fileData = cacheService.getProjectFile(key);
            if (fileData != null) {
                if (fileData.getContentType() != null) {
                    response.setContentType(fileData.getContentType());
                }
                ServletUtils.prepareDisposition(request, response, fileData.getFileName());
                response.setContentLength(fileData.getFileData().length);
                response.setBufferSize(BUFFER);
                response.getOutputStream().write(fileData.getFileData());
                response.flushBuffer();
            } else {
                logger.error("File data not found in cache for requested parameters: projectId [{}]  type [{}]",
                        key.getProjectId(), key.getProjectDataType());
            }
        } catch (Exception e) {
            logger.error("Unexpected error in ProjectFileServlet.doGet: ", e);
        }
    }
}

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From source file:co.com.realtech.mariner.util.jsf.file.FileDownloader.java

/**
 * Descargar archivo a travs del FacesContext.
 *
 * @param context/*from w w w .  j av  a 2  s . c o  m*/
 * @param bytes
 * @param nombreArchivo
 */
public void descargarArchivoFacesContext(FacesContext context, byte[] bytes, String nombreArchivo) {
    ExternalContext externalContext = context.getExternalContext();
    HttpServletResponse response = (HttpServletResponse) externalContext.getResponse();
    try {
        if (bytes == null) {
            System.out.println("Bytes nulos en respuesta de PDF");
        } else {
            try (ServletOutputStream servletOutputStream = response.getOutputStream()) {
                response.addHeader("Content-Type", "application/pdf");
                response.addHeader("Content-Disposition", "attachment; filename=" + nombreArchivo + ".pdf");
                response.setContentLength(bytes.length);
                response.setContentType("application/pdf");
                servletOutputStream.write(bytes);
                servletOutputStream.flush();
                context.responseComplete();
            }
        }
    } catch (Exception e) {
        System.out.println("Error enviando archivo PDF, error causado por " + e);
    }
}

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From source file:info.magnolia.cms.servlets.ResourceDispatcher.java

/**
 * @param path path for nodedata in jcr repository
 * @param hm   Hierarchy manager/*from  www . ja v  a 2s  .  c om*/
 * @param res  HttpServletResponse
 * @return InputStream or <code>null</code> if nodeData is not found
 */
private InputStream getNodedataAstream(String path, HierarchyManager hm, HttpServletResponse res) {
    if (log.isDebugEnabled()) {
        log.debug("getAtomAsStream for path \"" + path + "\""); //$NON-NLS-1$ //$NON-NLS-2$
    }
    try {
        NodeData atom = hm.getNodeData(path);
        if (atom != null) {
            if (atom.getType() == PropertyType.BINARY) {

                String sizeString = atom.getAttribute("size"); //$NON-NLS-1$
                if (NumberUtils.isNumber(sizeString)) {
                    res.setContentLength(Integer.parseInt(sizeString));
                }
            }

            Value value = atom.getValue();
            if (value != null) {
                return value.getStream();
            }
        }

        log.warn("Resource not found: [" + path + "]"); //$NON-NLS-1$ //$NON-NLS-2$

    } catch (PathNotFoundException e) {
        log.warn("Resource not found: [" + path + "]"); //$NON-NLS-1$ //$NON-NLS-2$
    } catch (RepositoryException e) {
        log.error("RepositoryException while reading Resource [" + path + "]", e); //$NON-NLS-1$ //$NON-NLS-2$
    }
    return null;
}

---

From source file:com.github.matthesrieke.realty.CrawlerServlet.java

@Override
protected void doGet(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
    resp.setContentType("text/html");

    String itemsMarkup = createGroupedItemsMarkup();
    String content = this.listTemplate.toString().replace("${entries}", itemsMarkup).replace("${meta}",
            createMetaMarkup());//from   w w w  . j a va  2 s .c om

    byte[] bytes = content.getBytes("UTF-8");

    resp.setContentLength(bytes.length);
    resp.setCharacterEncoding("UTF-8");
    resp.setStatus(HttpStatus.SC_OK);

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

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From source file:com.doitnext.http.router.RestRouterServlet.java

@Override
public void dumpEndpoints(HttpServletRequest req, HttpServletResponse resp) throws Exception {
    List<String> endpointPaths = new ArrayList<String>();
    for (Route route : this.routes) {
        endpointPaths.add(route.getPathTemplate().getLexicalPath());
    }/*from  ww  w .j  ava  2  s  .  c om*/
    resp.setStatus(200);
    byte bytes[] = objectMapper.writeValueAsBytes(endpointPaths);
    resp.setContentLength(bytes.length);
    resp.setContentType("application/json");
    resp.getOutputStream().write(bytes);
    resp.getOutputStream().close();
}

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From source file:de.uni_koeln.spinfo.maalr.webapp.controller.WebMVCController.java

@RequestMapping(value = "/dowanload/backup/{fileName}", method = { RequestMethod.GET }, produces = {
        "application/zip" })
public void downloadBackup(@PathVariable("fileName") String fileName, HttpServletRequest request,
        HttpServletResponse response) {
    try {//from w ww . j  av  a2s.  c o  m
        String dir = Configuration.getInstance().getBackupLocation();
        File zip = new File(dir, fileName + ".zip");
        response.setContentType("application/zip");
        response.setContentLength((int) zip.length());
        OutputStream os = response.getOutputStream();
        os.write(IOUtils.toByteArray(new FileInputStream(zip)));
    } catch (IOException e) {
        e.printStackTrace();
    }
}

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From source file:com.sastix.cms.server.controllers.ResourceController.java

@RequestMapping(value = "/v" + Constants.REST_API_1_0 + "/" + Constants.GET_DATA, method = RequestMethod.POST)
public byte[] getData(@Valid @RequestBody DataDTO dataDTO, HttpServletResponse response, BindingResult result)
        throws ContentValidationException, ResourceAccessError, IOException {
    LOG.trace(Constants.GET_DATA);// w  ww. j a  v a2 s .  co  m
    final Path responseFile = resourceService.getDataPath(dataDTO);
    final byte[] responseData = Files.readAllBytes(responseFile);
    final String mimeType = tika.detect(responseData);
    response.setContentType(mimeType);
    response.setContentLength(responseData.length);
    return responseData;
}

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From source file:br.com.hslife.orcamento.controller.ArquivoController.java

public void baixarArquivo() {
    HttpServletResponse response = (HttpServletResponse) FacesContext.getCurrentInstance().getExternalContext()
            .getResponse();/*ww  w  .ja v  a2s.c  o  m*/
    try {
        response.setContentType(entity.getContentType());
        response.setHeader("Content-Disposition", "attachment; filename=" + entity.getNomeArquivo());
        response.setContentLength(entity.getDados().length);
        ServletOutputStream output = response.getOutputStream();
        output.write(entity.getDados(), 0, entity.getDados().length);
        FacesContext.getCurrentInstance().responseComplete();
    } catch (Exception e) {
        errorMessage(e.getMessage());
    }
}

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From source file:org.n52.sensorweb.series.policy.editor.ctrl.DownloadController.java

/**
 * Method for handling file download request from client
 *//*w  w w  .  j  ava2s  .  c o  m*/
@RequestMapping(method = RequestMethod.GET)
public void doDownload(HttpServletResponse response) throws IOException {

    File downloadFile = new File(permissionsXmlPath);
    FileInputStream inputStream = new FileInputStream(downloadFile);

    // get MIME type of the file
    String mimeType = sc.getMimeType(permissionsXmlPath);
    if (mimeType == null) {
        // set to binary type if MIME mapping not found
        mimeType = "application/octet-stream";
    }
    // 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();

}

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