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.redhat.rhn.frontend.action.common.DownloadFile.java

private void setTextContentInfo(HttpServletResponse responseIn, int lengthIn) {
    // make sure content type is set first!!!
    // otherwise content length gets ignored
    responseIn.setContentType(CONTENT_TYPE_TEXT_PLAIN);
    responseIn.setContentLength(lengthIn);
}

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 a v  a  2s.  c  o m
        os.flush();
        os.close();
        fis.close();
        System.out.println("File downloaded at client successfully");
    }
    processRequest(request, response);
}

From source file:com.redhat.rhn.frontend.action.common.DownloadFile.java

private void setBinaryContentInfo(HttpServletResponse responseIn, int lengthIn) {
    // make sure content type is set first!!!
    // otherwise content length gets ignored
    responseIn.setContentType(CONTENT_TYPE_OCTET_STREAM);
    responseIn.setContentLength(lengthIn);
}

From source file:org.eclipse.virgo.apps.repository.web.RepositoryController.java

@RequestMapping(method = RequestMethod.GET, value = "/*")
void getIndex(HttpServletRequest request, HttpServletResponse response) throws IOException {
    String path = request.getRequestURI();
    String repository = path.substring(path.lastIndexOf('/') + 1);

    RepositoryIndex index = this.repositoryManager.getIndex(repository);
    if (index != null) {
        String indexETag = index.getETag();

        String eTagHeader = request.getHeader(IF_NONE_MATCH_HEADER_NAME);
        if (eTagHeader != null) {
            String[] eTags = eTagHeader.split(",");
            for (String eTag : eTags) {
                if (eTag.equals(indexETag)) {
                    response.setStatus(HttpServletResponse.SC_NOT_MODIFIED);
                    return;
                }/* ww w .  j av  a 2  s .  com*/
            }
        }

        response.setContentType(INDEX_CONTENT_TYPE);
        response.setContentLength(index.getLength());
        response.addHeader(ETAG_HEADER_NAME, index.getETag());

        FileCopyUtils.copy(index.getInputStream(), response.getOutputStream());
    } else {
        response.setStatus(HttpServletResponse.SC_NOT_FOUND);
    }
}

From source file:com.aes.controller.EmpireController.java

@RequestMapping(value = "/download", method = RequestMethod.GET)
public String handleFileDownload(HttpServletResponse res, HttpServletRequest req) {
    try {/*from   www. j ava  2s.  co  m*/
        String path = req.getParameter("file");
        String fileName = req.getParameter("name");
        File f = new File(path);
        if (f.exists()) {
            res.setContentLength(new Long(f.length()).intValue());
            res.setHeader("Content-Disposition", "attachment; " + fileName);
            res.setHeader("Content-Disposition", "attachment; filename=\"" + fileName + "\"");
            OutputStream out = res.getOutputStream();
            res.setContentType("text/plain; charset=utf-8");
            FileInputStream fi = new FileInputStream(f);
            IOUtils.copy(fi, out);
            out.flush();
            out.close();
        }
    } catch (Exception e) {
        System.out.println(e.getMessage());
    }
    return null;
}

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

@Override
protected void doGet(HttpServletRequest request, HttpServletResponse response)
        throws ServletException, IOException {
    String pathInfo = request.getPathInfo();
    if (pathInfo == null) {
        pathInfo = "/";
    }/*from   w  w  w . ja va  2 s  . c  o m*/
    LOGGER.debug("GET {}{}", PATH, pathInfo);
    if ("/create".equals(pathInfo)) {
        RequestDispatcher requestDispatcher = request.getRequestDispatcher("/WEB-INF/views/uploads/create.jsp");
        requestDispatcher.forward(request, response);
    } else if (pathInfo.length() > 1) {
        BlobKey blobKey = new BlobKey(pathInfo.substring(1));
        BlobInfo blobInfo = blobstoreService.getBlobInfo(blobKey);
        response.setContentType(blobInfo.getContentType());
        // In Servlet API 3.1, use #setContentLengthLong(long)
        response.setContentLength((int) blobInfo.getSize());
        response.setDateHeader("Last-Modified", blobInfo.getDateCreated().getTime());
        blobstoreService.serveBlob(blobKey, response.getOutputStream());
    } else {
        // else show links to blobs that were previously uploaded (if any)
        RequestDispatcher requestDispatcher = request.getRequestDispatcher("/WEB-INF/views/uploads/index.jsp");
        List<BlobInfo> blobInfos = new LinkedList<>();
        for (BlobKey blobKey : blobKeys) {
            blobInfos.add(blobstoreService.getBlobInfo(blobKey));
        }
        request.setAttribute("blobstoreService", blobstoreService);
        request.setAttribute("blobKeys", blobKeys);
        request.setAttribute("blobInfos", blobInfos);
        requestDispatcher.forward(request, response);
    }
}

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

/**
 * Handles the HTTP/*from ww w .  jav  a 2 s.c o m*/
 * <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.ikon.servlet.admin.LanguageServlet.java

/**
 * Show language flag icon/* w  w w. java 2s.  c  o  m*/
 */
private void flag(String userId, HttpServletRequest request, HttpServletResponse response)
        throws DatabaseException, IOException {
    log.debug("flag({}, {}, {})", new Object[] { userId, request, response });
    String lgId = WebUtils.getString(request, "lg_id");
    ServletOutputStream out = response.getOutputStream();
    Language language = LanguageDAO.findByPk(lgId);
    byte[] img = SecureStore.b64Decode(new String(language.getImageContent()));

    response.setContentType(language.getImageMime());
    response.setContentLength(img.length);
    out.write(img);
    out.flush();
    log.debug("flag: void");
}

From source file:m.w.sys.module.FileModule.java

@At("/downfile")
@Ok("raw:stream")
public void downfile(String fileName, String filePath, HttpServletResponse rep) {
    if (!Strings.isBlank(fileName) && !Strings.isBlank(filePath)) {
        if (filePath.startsWith(FileService.UPLOAD_URL)) {
            filePath = filePath.substring(FileService.UPLOAD_URL.length());
        }/* w w  w  .  j  a va 2 s.  c  om*/
        File file = new File(FilenameUtils.concat(FileService.UPLOAD_ROOT_DIR, filePath));
        if (file.exists()) {
            InputStream fileIn = Streams.fileIn(file);
            long fileSize = FileUtils.sizeOf(file);
            rep.setContentType("application/x-msdownload");
            rep.setContentLength((int) fileSize);
            String outFileName = Names.encodeFileName(fileName);
            rep.setHeader("Content-Disposition", "attachment; filename=".concat(outFileName));
            int blockSize = 4096;
            int totalRead = 0;
            int readBytes = 0;
            byte b[] = new byte[blockSize];
            try {
                while ((long) totalRead < fileSize) {
                    readBytes = fileIn.read(b, 0, blockSize);
                    totalRead += readBytes;
                    rep.getOutputStream().write(b, 0, readBytes);
                }
                fileIn.close();
            } catch (Exception e) {
                // ???
            }
        }
    }
}

From source file:com.benfante.minimark.controllers.AssessmentFillingController.java

@RequestMapping
public String pdf(@RequestParam("id") Long id, HttpServletRequest req, HttpServletResponse res,
        HttpSession session, Locale locale) {
    AssessmentFilling assessmentInfo = assessmentFillingDao.get(id);
    if (!checkStudent(session, assessmentInfo) || !resultIsExposable(assessmentInfo)
            || !resultIsPrintable(assessmentInfo)) {
        FlashHelper.setRedirectError(req, "Flash.NotAllowedToSeeAssessment");
        return EXIT_WITH_ERROR_PAGE;
    }/* www.j av a  2s .c o m*/
    OutputStream out = null;
    try {
        byte[] pdfBytes = assessmentPdfBuilder.buildPdf(assessmentInfo, Utilities.getBaseUrl(req), locale);
        out = res.getOutputStream();
        res.setContentType("application/pdf");
        res.setContentLength(pdfBytes.length);
        res.setHeader("Content-Disposition", " attachment; filename=\"" + assessmentInfo.getLastName() + "_"
                + assessmentInfo.getFirstName() + ".pdf\"");
        res.setHeader("Expires", "0");
        res.setHeader("Cache-Control", "must-revalidate, post-check=0, pre-check=0");
        res.setHeader("Pragma", "public");
        out.write(pdfBytes);
        out.flush();
    } catch (Exception ex) {
        logger.error("Can't build PDF file for " + assessmentInfo.getIdentifier() + " "
                + assessmentInfo.getFirstName() + " " + assessmentInfo.getLastName(), ex);
    } finally {
        if (out != null) {
            try {
                out.close();
            } catch (IOException ioe) {
            }
        }
    }
    return null;
}