Example usage for javax.servlet ServletOutputStream flush

Introduction

In this page you can find the example usage for javax.servlet ServletOutputStream flush.

Prototype

public void flush() throws IOException 

Source Link

Document

Flushes this output stream and forces any buffered output bytes to be written out.

Usage

From source file:com.zilverline.MockHandler.java

@Override
public void handle(String target, Request baseRequest, HttpServletRequest request, HttpServletResponse response)
        throws IOException, ServletException {
    invariant();// www.  j  ava2 s  . c o  m
    ServletOutputStream outputStream = response.getOutputStream();
    IOUtils.copy(responseResource.getInputStream(), outputStream);
    outputStream.flush();
}

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

@RequestMapping
public void image(HttpServletRequest req, HttpServletResponse res) throws IOException {
    byte[] captchaChallengeAsJpeg = null;
    // the output stream to render the captcha image as jpeg into
    ByteArrayOutputStream jpegOutputStream = new ByteArrayOutputStream();

    // get the session id that will identify the generated captcha.
    //the same id must be used to validate the res, the session id is a good candidate!
    String captchaId = req.getSession().getId();

    // call the ImageCaptchaService getChallenge method
    BufferedImage challenge = captchaService.getImageChallengeForID(captchaId, req.getLocale());

    // a jpeg encoder
    JPEGImageEncoder jpegEncoder = JPEGCodec.createJPEGEncoder(jpegOutputStream);
    jpegEncoder.encode(challenge);//from w ww.  j ava2  s . c  om

    captchaChallengeAsJpeg = jpegOutputStream.toByteArray();

    // flush it in the res
    res.setHeader("Cache-Control", "no-store");
    res.setHeader("Pragma", "no-cache");
    res.setDateHeader("Expires", 0);
    res.setContentType("image/jpeg");
    ServletOutputStream resOutputStream = res.getOutputStream();
    resOutputStream.write(captchaChallengeAsJpeg);
    resOutputStream.flush();
    resOutputStream.close();
}

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From source file:org.fenixedu.parking.ui.Action.externalServices.ExportParkingData.java

@Override
public ActionForward execute(ActionMapping mapping, ActionForm actionForm, HttpServletRequest request,
        HttpServletResponse response) throws Exception {

    final String password = request.getParameter("password");
    final String username = request.getParameter("username");
    checkPermissions(username, password);

    ParkingDataReportFile parkingDataReportFile = getLastParkingDataReportJob();
    if (parkingDataReportFile != null && parkingDataReportFile.getFile() != null) {
        final byte[] data = parkingDataReportFile.getFile().getContent();
        response.setContentLength(data.length);
        response.setContentType("application/vnd.ms-access");
        response.setHeader("Content-disposition",
                "attachment; filename=" + parkingDataReportFile.getFilename());
        final ServletOutputStream outputStream = response.getOutputStream();
        outputStream.write(data);/*from  www.  j ava2 s.co  m*/
        outputStream.flush();
        outputStream.close();
    }
    return null;
}

---

From source file:de.fau.amos4.web.PrintDataController.java

@RequestMapping("/employee/download/text")
public ModelAndView EmployeeDownloadText(HttpServletResponse response,
        @RequestParam(value = "id", required = true) long employeeId) throws IOException {
    // Use the service to get the Employee in the LODAS format
    final String employeeAsLodas = employeeService.getLodasRepresentation(employeeId);

    if (employeeAsLodas == null) {
        return new ModelAndView("redirect:/client/dashboard");
    }//from   ww  w. ja  v  a  2  s  . c  o  m

    // We want to have a txt file download
    response.setContentType("text/plain");
    response.setHeader("Content-Disposition", "attachment;filename=employee_as_lodas.txt");
    response.setCharacterEncoding("UTF-8");

    // Write the data out
    ServletOutputStream out = response.getOutputStream();
    out.write(employeeAsLodas.getBytes());
    out.flush();
    out.close();
    return null;
}

---

From source file:fr.paris.lutece.plugins.stock.modules.billetterie.web.PosterImageServlet.java

/**
 * Returns poster image/*from  w w w.ja  va  2s .  c om*/
 *
 * @param request the request
 * @param response the response
 * @throws ServletException the servlet exception
 * @throws IOException Signals that an I/O exception has occurred.
 */
protected void doGet(HttpServletRequest request, HttpServletResponse response)
        throws ServletException, IOException {
    String sIdProduct = request.getParameter(PARAMETER_PRODUCT_ID);

    if (StringUtils.isNotEmpty(sIdProduct)) {
        Integer idProduct = Integer.parseInt(sIdProduct);
        boolean isThumbnail = (request.getParameter(PARAMETER_TB) != null)
                && request.getParameter(PARAMETER_TB).equals(String.valueOf(true));
        byte[] bImage;

        if (isThumbnail) {
            bImage = _productService.getTbImage(idProduct);
        } else {
            bImage = _productService.getImage(idProduct);
        }

        response.setContentLength(bImage.length);
        response.setContentType(CONTENT_TYPE_IMAGE_JPEG);

        ServletOutputStream os = response.getOutputStream();
        IOUtils.write(bImage, os);
        os.flush();
        os.close();
    } else {
        LOGGER.error(ERROR_MESSAGE);
    }
}

---

From source file:Bean.liquidacionBean.java

public void exportarPDF(String liqventa) throws JRException, NamingException, SQLException, IOException {
    dbManager conn = new dbManager();
    Connection con = null;/* w  w w.  ja  v  a  2  s .  com*/
    con = conn.getConnection();
    Map<String, Object> parametros = new HashMap<String, Object>();
    if (StringUtils.isNotBlank(liqventa)) {
        parametros.put("liqventa", liqventa);
        System.out.println(liqventa);
        File jasper = new File("D:/reporte/liquidacion.jasper");
        JasperPrint jasperPrint = JasperFillManager.fillReport(jasper.getPath(), parametros, con);
        HttpServletResponse response = (HttpServletResponse) FacesContext.getCurrentInstance()
                .getExternalContext().getResponse();
        response.addHeader("Content-disposition", "attachment; filename=Liquidacin" + liqventa + ".pdf");
        ServletOutputStream stream = response.getOutputStream();
        JasperExportManager.exportReportToPdfStream(jasperPrint, stream);
        stream.flush();
        stream.close();
        FacesContext.getCurrentInstance().responseComplete();
    } else {
        FacesContext.getCurrentInstance().addMessage(null,
                new FacesMessage(FacesMessage.SEVERITY_INFO, "Error", "Generar Crdito."));
    }
}

---

From source file:egovframework.rte.fdl.excel.util.AbstractPOIExcelView.java

/**
 * Renders the Excel view, given the specified model.
 *//* w w  w  . j a  v  a  2  s.co  m*/
@Override
protected final void renderMergedOutputModel(Map<String, Object> model, HttpServletRequest request,
        HttpServletResponse response) throws Exception {

    XSSFWorkbook workbook = new XSSFWorkbook();
    logger.debug("Created Excel Workbook from scratch");

    /*if (workbook instanceof XSSFWorkbook) {
    setContentType(CONTENT_TYPE_XLSX);
    } else {
    setContentType(CONTENT_TYPE_XLS);
    }*/
    setContentType("application/vnd.openxmlformats-officedocument.spreadsheetml.sheet");

    buildExcelDocument(model, workbook, request, response);

    // Set the content type.
    response.setContentType(getContentType());

    // Flush byte array to servlet output stream.
    ServletOutputStream out = response.getOutputStream();
    out.flush();
    workbook.write(out);
    out.flush();

    // Don't close the stream - we didn't open it, so let the container
    // handle it.
    // http://stackoverflow.com/questions/1829784/should-i-close-the-servlet-outputstream
}

---

From source file:org.jahia.bin.WorkflowImageController.java

public ModelAndView handleRequest(HttpServletRequest request, HttpServletResponse response) throws Exception {
    String wfKey = request.getParameter("workflowKey");
    String basePath = "/" + StringUtils.substringBefore(wfKey, ":").replaceAll("\\.", "/") + "/";
    wfKey = StringUtils.substringAfter(wfKey, ":");
    WorklowTypeRegistration workflowRegistration = workflowService.getWorkflowRegistration(wfKey);
    JahiaTemplatesPackage module = workflowRegistration.getModule();

    String language = request.getParameter("language");

    Resource resource = module.getResource(basePath + wfKey + "_" + language + ".png");
    if (resource == null) {
        resource = module.getResource(basePath + wfKey + ".png");
    }/*w  w w.ja  va  2 s. com*/
    if (resource != null) {
        response.setContentType("image/png");

        ServletOutputStream out = response.getOutputStream();

        IOUtils.copy(resource.getInputStream(), out);
        out.flush();
    }
    response.setStatus(HttpServletResponse.SC_OK);
    return null;
}

---

From source file:com.octo.captcha.module.acegi.JCaptchaImageController.java

public ModelAndView handleRequest(HttpServletRequest httpServletRequest, HttpServletResponse response)
        throws Exception {
    byte[] captchaChallengeAsJpeg = null;

    ByteArrayOutputStream jpegOutputStream = new ByteArrayOutputStream();

    //get the session id that will identify the generated captcha.
    //the same id must be used to validate the response, the session id is a good candidate!
    String captchaId = httpServletRequest.getSession().getId();

    BufferedImage challenge = imageCaptchaService.getImageChallengeForID(captchaId,
            httpServletRequest.getLocale());

    JPEGImageEncoder jpegEncoder = JPEGCodec.createJPEGEncoder(jpegOutputStream);
    jpegEncoder.encode(challenge);/*  ww w . jav  a2s . c o  m*/

    captchaChallengeAsJpeg = jpegOutputStream.toByteArray();

    // configure cache  directives
    response.setHeader("Cache-Control", "no-store");
    response.setHeader("Pragma", "no-cache");
    response.setDateHeader("Expires", 0);
    //flush content in the response
    response.setContentType("image/jpeg");
    ServletOutputStream responseOutputStream = response.getOutputStream();
    responseOutputStream.write(captchaChallengeAsJpeg);
    responseOutputStream.flush();
    responseOutputStream.close();
    return null;
}

---

From source file:org.centralperf.helper.view.AbstractPOIExcelView.java

@Override
protected final void renderMergedOutputModel(Map<String, Object> model, HttpServletRequest request,
        HttpServletResponse response) throws Exception {

    Workbook workbook = null;/* w ww.j a  v a  2  s  .c  o m*/

    if (url != null) {
        workbook = getTemplateSource(url, request);
    } else {
        workbook = createWorkbook();
    }

    if (workbook instanceof XSSFWorkbook) {
        setContentType(CONTENT_TYPE_XLSX);
    } else {
        setContentType(CONTENT_TYPE_XLS);
    }

    buildExcelDocument(model, workbook, request, response);

    // Set the content type.
    response.setContentType(getContentType());

    // Flush byte array to servlet output stream.
    ServletOutputStream out = response.getOutputStream();
    out.flush();
    // Have to catch exception because of thise bug : https://issues.apache.org/bugzilla/show_bug.cgi?id=49940
    try {
        workbook.write(out);
    } catch (org.apache.xmlbeans.impl.values.XmlValueDisconnectedException disconnectedException) {
        // Do nothing... In fact, it's only a bug...
    }
    out.flush();

    // Don't close the stream - we didn't open it, so let the container
    // handle it.
    // http://stackoverflow.com/questions/1829784/should-i-close-the-servlet-outputstream
}

---

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