Example usage for javax.servlet.http HttpServletResponse getOutputStream

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

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Introduction

In this page you can find the example usage for javax.servlet.http HttpServletResponse getOutputStream.

Prototype

public ServletOutputStream getOutputStream() throws IOException;

Source Link

Document

Returns a ServletOutputStream suitable for writing binary data in the response.

Usage

From source file:com.feilong.servlet.http.ResponseDownloadUtil.java

/**
 * Down load data.//from   w ww .  j a  v  a 2 s . com
 *
 * @param saveFileName
 *            the save file name
 * @param inputStream
 *            the input stream
 * @param contentLength
 *            the content length
 * @param request
 *            the request
 * @param response
 *            the response
 */
private static void downLoadData(String saveFileName, InputStream inputStream, Number contentLength,
        HttpServletRequest request, HttpServletResponse response) {
    Date beginDate = new Date();
    String length = FileUtil.formatSize(contentLength.longValue());
    LOGGER.info("begin download~~,saveFileName:[{}],contentLength:[{}]", saveFileName, length);
    try {
        OutputStream outputStream = response.getOutputStream();
        IOWriteUtil.write(inputStream, outputStream);
        if (LOGGER.isInfoEnabled()) {
            String pattern = "end download,saveFileName:[{}],contentLength:[{}],time use:[{}]";
            LOGGER.info(pattern, saveFileName, length, formatDuration(beginDate));
        }
    } catch (IOException e) {
        /*
         * ?,  ClientAbortException , ?,????, ,.
         * ??, ??
         * ?,???...???,
         * ?, KILL?, ,?? ClientAbortException.
         */
        //ClientAbortException:  java.net.SocketException: Connection reset by peer: socket write error
        final String exceptionName = e.getClass().getName();

        if (StringUtils.contains(exceptionName, "ClientAbortException")
                || StringUtils.contains(e.getMessage(), "ClientAbortException")) {
            String pattern = "[ClientAbortException],maybe user use Thunder soft or abort client soft download,exceptionName:[{}],exception message:[{}] ,request User-Agent:[{}]";
            LOGGER.warn(pattern, exceptionName, e.getMessage(), RequestUtil.getHeaderUserAgent(request));
        } else {
            LOGGER.error("[download exception],exception name: " + exceptionName, e);
            throw new UncheckedIOException(e);
        }
    }
}

From source file:lc.kra.servlet.FileManagerServlet.java

private static void downloadFile(HttpServletResponse response, File file, String name, String contentType)
        throws IOException {
    response.setContentType(contentType);
    response.setHeader("Content-Disposition", "attachment; filename=\"" + name + "\"");
    copyStream(new FileInputStream(file), response.getOutputStream());
}

From source file:alfio.controller.AdminController.java

private static void downloadTicketsCSV(String eventName, String fileName, String[] header, Principal principal,
        HttpServletResponse response, EventManager eventManager, Function<Ticket, String[]> ticketMapper)
        throws IOException {
    Validate.isTrue(StringUtils.isNotBlank(eventName), "Event name is not valid");
    List<Ticket> tickets = eventManager.findAllConfirmedTickets(eventName, principal.getName());
    response.setContentType("text/csv;charset=UTF-8");
    response.setHeader("Content-Disposition", "attachment; filename=" + eventName + "-" + fileName + ".csv");
    try (ServletOutputStream out = response.getOutputStream()) {
        for (int marker : BOM_MARKERS) {//UGLY-MODE_ON: specify that the file is written in UTF-8 with BOM, thanks to alexr http://stackoverflow.com/a/4192897
            out.write(marker);//w  ww  .  j  a  v  a2 s  .  co m
        }
        CSVWriter writer = new CSVWriter(new OutputStreamWriter(out));
        writer.writeNext(header);
        tickets.stream().map(ticketMapper).forEach(writer::writeNext);
        writer.flush();
        out.flush();
    }
}

From source file:com.zving.platform.SysInfo.java

public static void downloadDB(HttpServletRequest request, HttpServletResponse response) {
    try {//ww  w. ja v  a  2s  .  c  om
        request.setCharacterEncoding(Constant.GlobalCharset);
        response.reset();
        response.setContentType("application/octet-stream");
        response.setHeader("Content-Disposition",
                "attachment; filename=DB_" + DateUtil.getCurrentDate("yyyyMMddHHmmss") + ".dat");
        OutputStream os = response.getOutputStream();

        String path = Config.getContextRealPath() + "WEB-INF/data/backup/DB_"
                + DateUtil.getCurrentDate("yyyyMMddHHmmss") + ".dat";
        new DBExport().exportDB(path);

        byte[] buffer = new byte[1024];
        int read = -1;
        FileInputStream fis = null;
        try {
            fis = new FileInputStream(path);
            while ((read = fis.read(buffer)) != -1)
                if (read > 0) {
                    byte[] chunk = (byte[]) null;
                    if (read == 1024) {
                        chunk = buffer;
                    } else {
                        chunk = new byte[read];
                        System.arraycopy(buffer, 0, chunk, 0, read);
                    }
                    os.write(chunk);
                    os.flush();
                }
        } finally {
            if (fis != null) {
                fis.close();
            }
        }
        os.flush();
        os.close();
    } catch (IOException e) {
        e.printStackTrace();
    } catch (Exception e) {
        e.printStackTrace();
    }
}

From source file:org.openmrs.module.omodexport.util.OmodExportUtil.java

/**
 * Utility module for exporting all modules. The exported modules will be in a zip file called
 * "modules.zip"//w  w  w. ja va  2 s .co m
 * 
 * @param response
 * @throws IOException
 */
public static void exportAllModules(HttpServletResponse response) throws IOException {

    Collection<Module> modules = ModuleFactory.getStartedModules();
    List<File> files = new ArrayList<File>();
    for (Module module : modules) {
        files.add(module.getFile());
    }
    response.setContentType("application/zip");
    response.setHeader("Content-Disposition", "attachment; filename=\"modules.ZIP\"");

    ZipOutputStream out = new ZipOutputStream(response.getOutputStream());

    zipFiles(files, out);
}

From source file:gov.nih.nci.caarray.web.helper.DownloadHelper.java

/**
 * Zips the selected files and writes the result to the servlet output stream. Also sets content type and
 * disposition appropriately.//w ww.ja v a2s  . co m
 * 
 * @param files the files to zip and send
 * @param baseFilename the filename w/o the suffix to use for the archive file. This filename will be set as the
 *            Content-disposition header
 * @throws IOException if there is an error writing to the stream
 */
public static void downloadFiles(Collection<CaArrayFile> files, String baseFilename) throws IOException {
    final HttpServletResponse response = ServletActionContext.getResponse();

    try {
        final PackagingInfo info = getPreferedPackageInfo(files, baseFilename);
        response.setContentType(info.getMethod().getMimeType());
        response.addHeader("Content-disposition", "filename=\"" + info.getName() + "\"");

        final List<CaArrayFile> sortedFiles = new ArrayList<CaArrayFile>(files);
        Collections.sort(sortedFiles, CAARRAYFILE_NAME_COMPARATOR_INSTANCE);
        final OutputStream sos = response.getOutputStream();
        final OutputStream closeShield = new CloseShieldOutputStream(sos);
        final ArchiveOutputStream arOut = info.getMethod().createArchiveOutputStream(closeShield);
        try {
            for (final CaArrayFile f : sortedFiles) {
                fileAccessUtils.addFileToArchive(f, arOut);
            }
        } finally {
            // note that the caller's stream is shielded from the close(),
            // but this is the only way to finish and flush the (gzip) stream.
            try {
                arOut.close();
            } catch (final Exception e) {
                LOG.error(e);
            }
        }
    } catch (final Exception e) {
        LOG.error("Error streaming download of files " + files, e);
        response.sendError(HttpServletResponse.SC_NOT_FOUND);
    }
}

From source file:org.bonitasoft.web.designer.controller.utils.HttpFile.java

/**
 * Write headers and content in the response
 *//*w  ww . jav  a2 s.  c om*/
private static void writeFileInResponse(HttpServletResponse response, Path filePath, String mimeType,
        String contentDispositionType) throws IOException {
    response.setHeader("Content-Type", mimeType);
    response.setHeader("Content-Length", String.valueOf(filePath.toFile().length()));
    response.setHeader("Content-Disposition", new StringBuilder().append(contentDispositionType)
            .append("; filename=\"").append(filePath.getFileName()).append("\"").toString());
    response.setCharacterEncoding(StandardCharsets.UTF_8.toString());
    try (OutputStream out = response.getOutputStream()) {
        Files.copy(filePath, out);
    }
}

From source file:com.invbf.sistemagestionmercadeo.reportes.ReportCreator.java

public static void generadorSolicitudBono(Solicitudentrega elemento) {
    ServletOutputStream servletOutputStream = null;
    try {// w w w. j  a  v  a 2 s.  c om
        SolicitudBonoJuego elementoReporte = new SolicitudBonoJuego();
        if (elemento.getSolicitante().getUsuariodetalle().getIdcargo() != null) {
            elementoReporte.setCargo(elemento.getSolicitante().getUsuariodetalle().getIdcargo().getNombre());
        } else {
            elementoReporte.setCargo("");
        }
        elementoReporte.setCasino(elemento.getIdCasino().getNombre());
        SimpleDateFormat formateador = new SimpleDateFormat("dd-MMMM-yy", new Locale("es_ES"));
        elementoReporte.setFecha(formateador.format(elemento.getFecha()));
        elementoReporte.setJustificacion(elemento.getJustificacion());
        elementoReporte.setNombre(elemento.getSolicitante().getNombreUsuario());
        elementoReporte.setProposito(elemento.getPropositoEntrega().getNombre());
        elementoReporte.setTipobono(elemento.getTipoBono().getNombre());
        List<SolicitudBonoJuegoCliente> clientes = new ArrayList<SolicitudBonoJuegoCliente>();
        int item = 1;
        Float total = 0f;
        for (Solicitudentregacliente sec : elemento.getSolicitudentregaclienteList()) {
            clientes.add(new SolicitudBonoJuegoCliente((item) + "",
                    sec.getCliente().getNombres() + " " + sec.getCliente().getApellidos(),
                    sec.getValorTotal().toString(), sec.getAreaid().getNombre()));
            total += sec.getValorTotal();
            item++;
        }
        elementoReporte.setClientes(clientes);
        elementoReporte.setTotal(total.toString());
        ExternalContext externalContext = FacesContext.getCurrentInstance().getExternalContext();
        InputStream input = externalContext
                .getResourceAsStream("/resources/reportes/solicitudbonosjuego.jasper");
        InputStream subreport = externalContext
                .getResourceAsStream("/resources/reportes/solicitudbonosjuego_cliente.jasper");
        InputStream logo = externalContext.getResourceAsStream("/resources/reportes/LogoMRCNegro.jpeg");
        InputStream logoibf = externalContext.getResourceAsStream("/resources/reportes/IBFLogo01jpeg.jpeg");
        ImageIcon tlc = new ImageIcon(IOUtils.toByteArray(logo));
        ImageIcon ibf = new ImageIcon(IOUtils.toByteArray(logoibf));
        elementoReporte.setIbf(ibf.getImage());
        elementoReporte.setLogo(tlc.getImage());
        List<SolicitudBonoJuego> lista = new ArrayList<SolicitudBonoJuego>();
        lista.add(elementoReporte);
        JRBeanCollectionDataSource beanColDataSource = new JRBeanCollectionDataSource(lista);
        JasperReport jasperMasterReport = (JasperReport) JRLoader.loadObject(input);
        JasperReport jasperSubReport = (JasperReport) JRLoader.loadObject(subreport);
        elementoReporte.setSubreportclientes(jasperSubReport);
        Map<String, Object> parameters = new HashMap<String, Object>();
        parameters.put("logo", lista.get(0).getLogo());
        parameters.put("ibf", lista.get(0).getIbf());
        parameters.put("clientes", lista.get(0).getClientes());
        parameters.put("subreportclientes", jasperSubReport);
        JasperPrint jasperPrint = JasperFillManager.fillReport(jasperMasterReport, parameters,
                beanColDataSource);
        HttpServletResponse httpServletResponse = (HttpServletResponse) FacesContext.getCurrentInstance()
                .getExternalContext().getResponse();
        httpServletResponse.addHeader("Content-disposition",
                "attachment; filename=ActaSolicitudBonosJuego" + elemento.getId() + ".pdf");
        servletOutputStream = httpServletResponse.getOutputStream();
        JasperExportManager.exportReportToPdfStream(jasperPrint, servletOutputStream);
    } catch (IOException ex) {
        Logger.getLogger(ReportCreator.class.getName()).log(Level.SEVERE, null, ex);
    } catch (JRException ex) {
        Logger.getLogger(ReportCreator.class.getName()).log(Level.SEVERE, null, ex);
    } finally {
        try {
            servletOutputStream.close();
        } catch (IOException ex) {
            Logger.getLogger(ReportCreator.class.getName()).log(Level.SEVERE, null, ex);
        }
    }
}

From source file:net.mindengine.oculus.frontend.web.controllers.display.FileDisplayController.java

public static void showFile(HttpServletResponse response, String path, String fileName, String contentType)
        throws IOException {
    File file = new File(path);
    response.setBufferSize((int) file.length());
    response.setHeader("Content-Disposition", "attachment; filename=\"" + fileName + "\"");

    response.setContentType(contentType);
    response.setContentLength((int) file.length());

    byte[] bytes = new byte[(int) file.length()];
    FileInputStream fis = new FileInputStream(file);
    fis.read(bytes);//from  w  w  w. j a v a  2 s  .  c  o  m
    fis.close();

    FileCopyUtils.copy(bytes, response.getOutputStream());
}

From source file:org.openmrs.module.omodexport.util.OmodExportUtil.java

/**
 * Utility method for exporting a set of selected modules. The select modules will be exported
 * in zip file called "modules.zip"/*from   ww w .  ja v a2  s . co  m*/
 * 
 * @param moduleId -Dash-separated list of the module Ids
 * @param response
 * @throws IOException
 */
public static void exportSelectedModules(String moduleId, HttpServletResponse response) throws IOException {
    // Split the id string into an array of id's
    String[] moduleIds = moduleId.split("-");
    List<File> files = new ArrayList<File>();
    for (String mId : moduleIds) {
        Module m = ModuleFactory.getModuleById(mId);
        files.add(m.getFile());
    }
    response.setContentType("application/zip");
    response.setHeader("Content-Disposition", "attachment; filename=\"modules.ZIP\"");

    ZipOutputStream out = new ZipOutputStream(response.getOutputStream());

    zipFiles(files, out);
}