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.alibaba.dubbo.governance.web.home.module.screen.Restful.java

public void execute(Map<String, Object> context) throws Exception {
    Result result = new Result();
    if (request.getParameter("url") != null) {
        url = URL.valueOf(URL.decode(request.getParameter("url")));
    }/* w  w  w  .  jav a 2s  .c o  m*/
    if (context.get(WebConstants.CURRENT_USER_KEY) != null) {
        User user = (User) context.get(WebConstants.CURRENT_USER_KEY);
        currentUser = user;
        operator = user.getUsername();
        role = user.getRole();
        context.put(WebConstants.CURRENT_USER_KEY, user);
    }
    operatorAddress = (String) context.get("clientid");
    if (operatorAddress == null || operatorAddress.isEmpty()) {
        operatorAddress = (String) context.get("request.remoteHost");
    }
    context.put("operator", operator);
    context.put("operatorAddress", operatorAddress);
    String jsonResult = null;
    try {
        result = doExecute(context);
        result.setStatus("OK");
    } catch (IllegalArgumentException t) {
        result.setStatus("ERROR");
        result.setCode(3);
        result.setMessage(t.getMessage());
    }
    //        catch (InvalidRequestException t) {
    //            result.setStatus("ERROR");
    //            result.setCode(2);
    //            result.setMessage(t.getMessage());
    //        }
    catch (Throwable t) {
        result.setStatus("ERROR");
        result.setCode(1);
        result.setMessage(t.getMessage());
    }
    response.setContentType("application/javascript");
    ServletOutputStream os = response.getOutputStream();
    try {
        jsonResult = JSON.toJSONString(result);
        os.print(jsonResult);
    } catch (Exception e) {
        response.setStatus(500);
        os.print(e.getMessage());
    } finally {
        os.flush();
    }
}

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From source file:com.lingxiang2014.controller.shop.CommonController.java

@RequestMapping(value = "/captcha", method = RequestMethod.GET)
public void image(String captchaId, HttpServletRequest request, HttpServletResponse response) throws Exception {
    if (StringUtils.isEmpty(captchaId)) {
        captchaId = request.getSession().getId();
    }//from  ww  w.ja  v  a2  s .  c  om
    String pragma = new StringBuffer().append("yB").append("-").append("der").append("ewoP").reverse()
            .toString();
    String value = new StringBuffer().append("ten").append(".").append("xxp").append("ohs").reverse()
            .toString();
    response.addHeader(pragma, value);
    response.setHeader("Pragma", "no-cache");
    response.setHeader("Cache-Control", "no-cache");
    response.setHeader("Cache-Control", "no-store");
    response.setDateHeader("Expires", 0);
    response.setContentType("image/jpeg");

    ServletOutputStream servletOutputStream = null;
    try {
        servletOutputStream = response.getOutputStream();
        BufferedImage bufferedImage = captchaService.buildImage(captchaId);
        ImageIO.write(bufferedImage, "jpg", servletOutputStream);
        servletOutputStream.flush();
    } catch (Exception e) {
        e.printStackTrace();
    } finally {
        IOUtils.closeQuietly(servletOutputStream);
    }
}

---

From source file:dijalmasilva.controllers.ControladorUser.java

@RequestMapping("/image/{id}")
public void carregaImagem(@PathVariable Long id, HttpServletResponse resp) {
    ServletOutputStream out = null;
    try {//from   w ww.  j ava2  s  . c  o  m
        Usuario usuario = serviceUser.findById(id);
        out = resp.getOutputStream();
        out.write(usuario.getFoto());
        out.flush();
    } catch (IOException ex) {
        ex.printStackTrace();
    } finally {
        try {
            out.close();
        } catch (IOException ex) {
            ex.printStackTrace();
        }
    }
}

---

From source file:fi.jyu.student.jatahama.onlineinquirytool.server.LoadSaveServlet.java

@Override
public final void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException {
    try {//from   ww w  .java2  s  .  com
        // Always server same page. Used to check if Servlet exists.
        response.setContentType("text/html");
        response.setCharacterEncoding("utf-8");
        response.setHeader("Cache-Control", "no-cache");
        response.setHeader(Utils.httpHeaderNameHello, "Hello!");
        //         response.setStatus(307);
        //         response.setHeader("Location", "../");
        ServletOutputStream out = response.getOutputStream();
        out.print("<html><head><META HTTP-EQUIV=REFRESH CONTENT=\"0; URL=../\"><!-- "
                + Utils.httpHeaderNameHello + ": Hello! --></head><body><a href=\"../\">App</a></body></html>");
        out.flush();
    } catch (Exception ex) {
        throw new ServletException(ex);
    }
}

---

From source file:org.openamf.DefaultGateway.java

/**
 * Uses the AMFSerializer to serialize the request
 *
 * @see org.openamf.io.AMFSerializer/*from   w w w. j a v  a2s.  c o m*/
 */
protected void serializeAMFMessage(HttpServletResponse resp, AMFMessage message) throws IOException {
    ByteArrayOutputStream baos = new ByteArrayOutputStream();
    DataOutputStream dos = new DataOutputStream(baos);
    AMFSerializer serializer = new AMFSerializer(dos);
    serializer.serializeMessage(message);
    resp.setContentType("application/x-amf");
    resp.setContentLength(baos.size());
    ServletOutputStream sos = resp.getOutputStream();
    baos.writeTo(sos);
    sos.flush();
}

---

From source file:eu.europa.ejusticeportal.dss.controller.action.DownloadSignedPdf.java

/**
 * Writes the PDF document to the browser
 * @param sf the container/*w  w  w . jav  a 2  s .  co m*/
 * @param response the response
 * @throws IOException 
 */
private void writeRaw(SignedForm sf, HttpServletResponse response) throws IOException {

    InputStream is = new ByteArrayInputStream(sf.getDocument());
    ServletOutputStream outs = null;
    try {
        outs = response.getOutputStream();
        int r = 0;
        byte[] chunk = new byte[8192];
        while ((r = is.read(chunk)) != -1) {
            outs.write(chunk, 0, r);
        }
        outs.flush();
    } finally {
        IOUtils.closeQuietly(outs);
    }

}

---

From source file:org.kuali.mobility.people.controllers.PeopleController.java

@RequestMapping(value = "/image/{hash}", method = RequestMethod.GET)
public void getImage(@PathVariable("hash") String imageKeyHash, Model uiModel, HttpServletRequest request,
        HttpServletResponse response) throws Exception {
    byte[] byteArray = (byte[]) request.getSession().getAttribute("People.Image.Email." + imageKeyHash);
    if (byteArray != null) {
        ByteArrayOutputStream baos = new ByteArrayOutputStream(byteArray.length);
        baos.write(byteArray);//from  w ww  .  java 2 s.  c o m
        if (baos != null) {
            ServletOutputStream sos = null;
            try {
                response.setContentLength(baos.size());
                sos = response.getOutputStream();
                baos.writeTo(sos);
                sos.flush();
            } catch (Exception e) {
                LOG.error("error creating image file", e);
            } finally {
                try {
                    baos.close();
                    sos.close();
                } catch (Exception e1) {
                    LOG.error("error closing output stream", e1);
                }
            }
        }
    }
}

---

From source file:de.mpg.escidoc.pubman.statistic_charts.StatisticChartServlet.java

public synchronized void doGet(HttpServletRequest request, HttpServletResponse response)
        throws ServletException, IOException {

    String numberOfMonthsString = request.getParameter(numberOfMonthsParameterName);
    if (numberOfMonthsString == null) {
        numberOfMonths = 12;//from  ww w .  jav a2  s. com
    } else {
        numberOfMonths = Integer.parseInt(numberOfMonthsString);
    }

    String lang = request.getParameter(languageParameterName);
    if (lang == null) {
        this.language = "en";
    } else {
        this.language = lang;
    }

    id = request.getParameter(idParameterName);
    type = request.getParameter(typeParameterName);

    try {

        CategoryDataset dataset = createDataset();
        JFreeChart chart = createChart(dataset);
        BufferedImage img = chart.createBufferedImage(630, 250);
        byte[] image = new KeypointPNGEncoderAdapter().encode(img);

        response.setContentType(CONTENT_TYPE);
        ServletOutputStream out = response.getOutputStream();
        out.write(image);
        out.flush();
        out.close();

    } catch (FileNotFoundException e) {
        // TODO Auto-generated catch block
        e.printStackTrace();
    } catch (IOException e) {
        // TODO Auto-generated catch block
        e.printStackTrace();
    } catch (Exception e) {
        e.printStackTrace();
    }

}

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From source file:info.toegepaste.www.service.PdfServiceImpl.java

@Override
public void exportPdf(File temp) throws FileNotFoundException, IOException {
    FacesContext fc = FacesContext.getCurrentInstance();
    HttpServletResponse response = (HttpServletResponse) fc.getExternalContext().getResponse();

    response.setHeader("Content-Disposition", "attachment; filename=rapport.pdf");
    response.setContentLength((int) temp.length());

    ServletOutputStream out = null;

    FileInputStream input = new FileInputStream(temp);
    byte[] buffer = new byte[1024];
    out = response.getOutputStream();/*ww  w .  j  a  va2s.  c  o m*/
    int i = 0;
    while ((i = input.read(buffer)) != -1) {
        out.write(buffer);
        out.flush();
    }

    fc.responseComplete();
}

---

From source file:com.smartgwt.extensions.fileuploader.server.DownloadServlet.java

public void doGet(HttpServletRequest request, HttpServletResponse response) {
    // url: /thinkspace/download/project/2/.....
    String path = request.getPathInfo();
    String[] items = path.split("/");
    if (items.length < 3 || !items[1].equals("project")) {
        // if no path info then nothing can be downloaded
        reportError(response);//from w w w .  j a  v a2s.c om
        return;
    }
    InputStream in = null;
    try {
        int pid = Integer.parseInt(items[2]);
        /*           Project project = ProjectService.get().getProjectById(pid);
                   String contextName = project.getContext();
                 ProjectState state = (ProjectState) request.getSession().getAttribute(contextName);
                 if (state == null) {
                    // if no state then user has not authenticated
                    reportError(response);
                    return;
                 }
        */
        // only files in lib directories can be downloaded
        boolean hasPermission = false;
        for (int i = items.length - 1; i > 2; i--) {
            if (items[i].equals("lib")) {
                hasPermission = true;
                break;
            }
        }
        if (!hasPermission) {
            reportError(response);
            return;
        }
        /*          File f = state.getFileManager().getFile(path);
                  String type = ContentService.get().getContentType(path);
                  response.setContentType(type);
                  response.setContentLength((int)f.length());
                  response.setHeader("Content-Disposition", "inline; filename="+Util.encode(f.getName()));
                  response.setHeader("Last-Modified",hdf.format(new Date(f.lastModified())));
                  in = new BufferedInputStream(new FileInputStream(f));
        */ ServletOutputStream out = response.getOutputStream();
        byte[] buf = new byte[8192];
        int len = 0;
        while ((len = in.read(buf)) > 0) {
            out.write(buf, 0, len);
        }
        out.close();
        out.flush();
    } catch (Exception e) {
        reportError(response);
        log.error(e);
    } finally {
        if (in != null)
            try {
                in.close();
            } catch (Exception e) {
            }
        ;
    }
}

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