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.struts2ext.json.JSONUtil.java

public static void writeJSONToResponse(SerializationParams serializationParams) throws IOException {
    StringBuilder stringBuilder = new StringBuilder();
    if (StringUtils.isNotBlank(serializationParams.getSerializedJSON()))
        stringBuilder.append(serializationParams.getSerializedJSON());

    if (StringUtils.isNotBlank(serializationParams.getWrapPrefix()))
        stringBuilder.insert(0, serializationParams.getWrapPrefix());
    else if (serializationParams.isWrapWithComments()) {
        stringBuilder.insert(0, "/* ");
        stringBuilder.append(" */");
    } else if (serializationParams.isPrefix())
        stringBuilder.insert(0, "{}&& ");

    if (StringUtils.isNotBlank(serializationParams.getWrapSuffix()))
        stringBuilder.append(serializationParams.getWrapSuffix());

    String json = stringBuilder.toString();

    if (LOG.isDebugEnabled()) {
        LOG.debug("[JSON]" + json);
    }/*  w  w w . ja  v a 2 s .c o m*/

    HttpServletResponse response = serializationParams.getResponse();

    // status or error code
    if (serializationParams.getStatusCode() > 0)
        response.setStatus(serializationParams.getStatusCode());
    else if (serializationParams.getErrorCode() > 0)
        response.sendError(serializationParams.getErrorCode());

    // content type
    if (serializationParams.isSmd())
        response.setContentType("application/json-rpc;charset=" + serializationParams.getEncoding());
    else
        response.setContentType(
                serializationParams.getContentType() + ";charset=" + serializationParams.getEncoding());

    if (serializationParams.isNoCache()) {
        response.setHeader("Cache-Control", "no-cache");
        response.setHeader("Expires", "0");
        response.setHeader("Pragma", "No-cache");
    }

    if (serializationParams.isGzip()) {
        response.addHeader("Content-Encoding", "gzip");
        GZIPOutputStream out = null;
        InputStream in = null;
        try {
            out = new GZIPOutputStream(response.getOutputStream());
            in = new ByteArrayInputStream(json.getBytes(serializationParams.getEncoding()));
            byte[] buf = new byte[1024];
            int len;
            while ((len = in.read(buf)) > 0) {
                out.write(buf, 0, len);
            }
        } finally {
            if (in != null)
                in.close();
            if (out != null) {
                out.finish();
                out.close();
            }
        }

    } else {
        response.setContentLength(json.getBytes(serializationParams.getEncoding()).length);
        PrintWriter out = response.getWriter();
        out.print(json);
    }
}

From source file:it.jugpadova.controllers.BinController.java

/**
 * Produce a certificate for a participant of an event.
 *///  w ww  . ja va  2s. com
@RequestMapping
public ModelAndView participantCertificate(HttpServletRequest req, HttpServletResponse res) {
    try {
        Long id = new Long(req.getParameter("id"));
        Participant participant = participantBo.retrieveParticipant(id);
        Event event = participant.getEvent();
        eventBo.checkUserAuthorization(event);
        InputStream jugCertificateTemplate = null;
        String jugName = null;
        if (participant.getEvent().getOwner() != null) {
            JUG jug = participant.getEvent().getOwner().getJug();
            jugName = jug.getName();
            jugCertificateTemplate = jugBo.retrieveJugCertificateTemplate(jug.getId());
        } else {
            jugName = "";
        }
        byte[] jugCertificate = participantBo.buildCertificate(jugCertificateTemplate,
                participant.getFirstName() + " " + participant.getLastName(), participant.getEvent().getTitle(),
                event.getStartDate(), jugName);
        res.setContentType("application/pdf");
        res.setContentLength(jugCertificate.length);
        res.setHeader("Content-Disposition",
                "attachment; filename="
                        + StringUtils.deleteWhitespace(participant.getLastName() + participant.getFirstName())
                        + "Certificate.pdf");
        OutputStream out = new BufferedOutputStream(res.getOutputStream());
        out.write(jugCertificate);
        out.flush();
        out.close();
    } catch (Exception ex) {
        logger.error("Error producing the certificate", ex);
    }
    return null;
}

From source file:sys.core.manager.RecursosManager.java

public void viewArchivo(String archivo) {
    FacesContext context = FacesContext.getCurrentInstance();
    HttpServletResponse response = (HttpServletResponse) context.getExternalContext().getResponse();
    response.setContentType("application/force-download");
    response.addHeader("Content-Disposition", "attachment; filename=\"" + archivo + "\"");
    ApplicationMBean applicationMBean = (ApplicationMBean) WebServletContextListener.getApplicationContext()
            .getBean("applicationMBean");
    byte[] buf = new byte[1024];
    try {/*from  w  ww  .  j a  va  2  s . co  m*/
        File file = new File(applicationMBean.getRutaArchivos() + archivo);
        long length = file.length();
        BufferedInputStream in = new BufferedInputStream(new FileInputStream(file));
        ServletOutputStream out = response.getOutputStream();
        response.setContentLength((int) length);
        while ((in != null) && ((length = in.read(buf)) != -1)) {
            out.write(buf, 0, (int) length);
        }
        in.close();
        out.close();
    } catch (Exception exc) {
        logger.error(exc);
    }
}

From source file:net.sourceforge.fenixedu.presentationTier.Action.publico.candidacies.GenericCandidaciesDA.java

public ActionForward downloadFile(ActionMapping mapping, ActionForm form, HttpServletRequest request,
        HttpServletResponse response) throws IOException {
    final GenericApplication application = getDomainObject(request, "applicationExternalId");
    final String confirmationCode = (String) getFromRequest(request, "confirmationCode");
    final GenericApplicationFile file = getDomainObject(request, "fileExternalId");
    if (application != null && file != null && file.getGenericApplication() == application
            && ((confirmationCode != null && application.getConfirmationCode() != null
                    && application.getConfirmationCode().equals(confirmationCode))
                    || application.getGenericApplicationPeriod().isCurrentUserAllowedToMange())) {
        response.setContentType(file.getContentType());
        response.addHeader("Content-Disposition", "attachment; filename=\"" + file.getFilename() + "\"");
        response.setContentLength(file.getSize().intValue());
        final DataOutputStream dos = new DataOutputStream(response.getOutputStream());
        dos.write(file.getContent());//from   w  w w.  java2s  .c o m
        dos.close();
    } else {
        response.setStatus(HttpServletResponse.SC_BAD_REQUEST);
        response.getWriter().write(HttpStatus.getStatusText(HttpStatus.SC_BAD_REQUEST));
        response.getWriter().close();
    }
    return null;
}

From source file:org.wrml.server.WrmlServlet.java

void writeVoid(final HttpServletResponse response) throws IOException {

    // TODO/*from   ww  w.  j  a va2  s . c  o m*/

    /*
     * Writing no entity body in the response may be perfectly fine...depending on the intent of the request (method, desired schema, etc), which is expressed in the
     * intendedResponseDimensions.
     */

    // TODO
    response.setStatus(HttpServletResponse.SC_OK);
    response.setContentLength(0);
    response.flushBuffer();
}

From source file:eionet.gdem.web.struts.remoteapi.ConvertJson2XmlAction.java

/**
 * The purpose of this action is to execute <code>Json</code> static methods to convert json string or URL to XML format. The
 * method expects either url or json parameters.
 *//* ww w.  ja va 2  s.  c  om*/
@Override
public ActionForward execute(ActionMapping map, ActionForm actionForm, HttpServletRequest request,
        HttpServletResponse httpServletResponse) throws ServletException {

    String jsonParam = null;

    Map params = request.getParameterMap();
    try {
        // parse request parameters
        if (params.containsKey(JSON_PARAM_NAME)) {
            jsonParam = ((String[]) params.get(JSON_PARAM_NAME))[0];
        }
        if (Utils.isNullStr(jsonParam)) {
            throw new GDEMException("Missing request parameter: " + JSON_PARAM_NAME);
        }
        String xml = "";
        if (jsonParam.startsWith("http:")) {
            // append other parameters to service Url
            if (params.size() > 1) {
                jsonParam = getJsonServiceUrl(jsonParam, params);
            }
            xml = Json.jsonRequest2xmlString(jsonParam);
        } else {
            xml = Json.jsonString2xml(jsonParam);
        }
        // set response properties
        httpServletResponse.setContentType("text/xml");
        httpServletResponse.setCharacterEncoding("UTF-8");
        httpServletResponse.setContentLength(xml.length());

        // write data into response
        httpServletResponse.getOutputStream().write(xml.getBytes());
    } catch (GDEMException ge) {
        ge.printStackTrace();
        LOGGER.error("Unable to convert JSON to XML. " + ge.toString());
        throw new ServletException(ge);
    } catch (Exception e) {
        e.printStackTrace();
        LOGGER.error("Unable to convert JSON to XML. ");
        throw new ServletException(e);
    } finally {
        try {
            httpServletResponse.getOutputStream().close();
            httpServletResponse.getOutputStream().flush();
        } catch (IOException ioe) {
            ioe.printStackTrace();
            throw new ServletException(ioe);
        }
    }

    // Do nothing, then response is already sent.
    return null;
}

From source file:biz.webgate.dominoext.poi.component.kernel.simpleviewexport.CSVExportProcessor.java

public void process2HTTP(ExportModel expModel, UISimpleViewExport uis, HttpServletResponse hsr,
        DateTimeHelper dth) {//from w w  w  . j  av  a2  s.  c o  m
    try {
        ByteArrayOutputStream csvBAOS = new ByteArrayOutputStream();
        OutputStreamWriter csvWriter = new OutputStreamWriter(csvBAOS);
        CSVPrinter csvPrinter = new CSVPrinter(csvWriter, CSVFormat.DEFAULT);

        // BUILDING HEADER
        if (uis.isIncludeHeader()) {
            for (ExportColumn expColumn : expModel.getColumns()) {
                csvPrinter.print(expColumn.getColumnName());
            }
            csvPrinter.println();
        }
        // Processing Values
        for (ExportDataRow expRow : expModel.getRows()) {
            for (ExportColumn expColumn : expModel.getColumns()) {
                csvPrinter.print(convertValue(expRow.getValue(expColumn.getPosition()), expColumn, dth));
            }
            csvPrinter.println();
        }
        csvPrinter.flush();

        hsr.setContentType("text/csv");
        hsr.setHeader("Cache-Control", "no-cache");
        hsr.setDateHeader("Expires", -1);
        hsr.setContentLength(csvBAOS.size());
        hsr.addHeader("Content-disposition", "inline; filename=\"" + uis.getDownloadFileName() + "\"");
        OutputStream os = hsr.getOutputStream();
        csvBAOS.writeTo(os);
        os.close();
    } catch (Exception e) {
        ErrorPageBuilder.getInstance().processError(hsr, "Error during SVE-Generation (CSV Export)", e);
    }
}

From source file:mx.edu.um.mateo.rh.web.JefeRHController.java

private void generaReporte(String tipo, List<Jefe> jefes, HttpServletResponse response)
        throws JRException, IOException {
    log.debug("Generando reporte {}", tipo);
    byte[] archivo = null;
    switch (tipo) {
    case "PDF":
        archivo = generaPdf(jefes);//from  w w w . j av  a 2 s  . com
        response.setContentType("application/pdf");
        response.addHeader("Content-Disposition", "attachment; filename=clavesEmpleado.pdf");
        break;
    case "CSV":
        archivo = generaCsv(jefes);
        response.setContentType("text/csv");
        response.addHeader("Content-Disposition", "attachment; filename=clavesEmpleado.csv");
        break;
    case "XLS":
        archivo = generaXls(jefes);
        response.setContentType("application/vnd.ms-excel");
        response.addHeader("Content-Disposition", "attachment; filename=clavesEmpleado.xls");
    }
    if (archivo != null) {
        response.setContentLength(archivo.length);
        try (BufferedOutputStream bos = new BufferedOutputStream(response.getOutputStream())) {
            bos.write(archivo);
            bos.flush();
        }
    }

}

From source file:eu.planets_project.tb.gui.backing.DownloadManager.java

/**
 * //w  w  w. j a v  a2s  .  c o  m
 * @return
 * @throws IOException
 */
public String downloadExportedExperiment(String expExportID, String downloadName) {
    FacesContext ctx = FacesContext.getCurrentInstance();

    // Decode the file name (might contain spaces and on) and prepare file object.
    try {
        expExportID = URLDecoder.decode(expExportID, "UTF-8");
    } catch (UnsupportedEncodingException e1) {
        // TODO Auto-generated catch block
        e1.printStackTrace();
        return null;
    }
    File file = expCache.getExportedFile(expExportID);

    HttpServletResponse response = (HttpServletResponse) ctx.getExternalContext().getResponse();

    // Check if file exists and can be read:
    if (!file.exists() || !file.isFile() || !file.canRead()) {
        return "fileNotFound";
    }

    // Get content type by filename.
    String contentType = new MimetypesFileTypeMap().getContentType(file);

    // If content type is unknown, then set the default value.
    // For all content types, see: http://www.w3schools.com/media/media_mimeref.asp
    if (contentType == null) {
        contentType = "application/octet-stream";
    }

    // Prepare streams.
    BufferedInputStream input = null;
    BufferedOutputStream output = null;

    try {
        // Open the file:
        input = new BufferedInputStream(new FileInputStream(file));
        int contentLength = input.available();

        // Initialise the servlet response:
        response.reset();
        response.setContentType(contentType);
        response.setContentLength(contentLength);
        response.setHeader("Content-disposition", "attachment; filename=\"" + downloadName + ".xml\"");
        output = new BufferedOutputStream(response.getOutputStream());

        // Write file out:
        for (int data; (data = input.read()) != -1;) {
            output.write(data);
        }

        // Flush the stream:
        output.flush();

        // Tell Faces that we're finished:
        ctx.responseComplete();

    } catch (IOException e) {
        // Something went wrong?
        e.printStackTrace();

    } finally {
        // Gently close streams.
        close(output);
        close(input);
    }
    return "success";
}

From source file:mx.edu.um.mateo.rh.web.DiaFeriadoController.java

private void generaReporte(String tipo, List<DiaFeriado> diaFeriados, HttpServletResponse response)
        throws JRException, IOException {
    log.debug("Generando reporte {}", tipo);
    byte[] archivo = null;
    switch (tipo) {
    case "PDF":
        archivo = generaPdf(diaFeriados);
        response.setContentType("application/pdf");
        response.addHeader("Content-Disposition", "attachment; filename=clavesEmpleado.pdf");
        break;//from w  w w  .  j a  v a  2  s .  c  o m
    case "CSV":
        archivo = generaCsv(diaFeriados);
        response.setContentType("text/csv");
        response.addHeader("Content-Disposition", "attachment; filename=clavesEmpleado.csv");
        break;
    case "XLS":
        archivo = generaXls(diaFeriados);
        response.setContentType("application/vnd.ms-excel");
        response.addHeader("Content-Disposition", "attachment; filename=clavesEmpleado.xls");
    }
    if (archivo != null) {
        response.setContentLength(archivo.length);
        try (BufferedOutputStream bos = new BufferedOutputStream(response.getOutputStream())) {
            bos.write(archivo);
            bos.flush();
        }
    }

}