Example usage for javax.servlet ServletOutputStream write

Introduction

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

Prototype

public abstract void write(int b) throws IOException;

Source Link

Document

Writes the specified byte to this output stream.

Usage

From source file:org.xsystem.http.RestApiTemplate.java

protected static void write(byte b[], ServletOutputStream out) throws IOException {
    out.write(b);
}

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From source file:org.xsystem.http.RestApiTemplate.java

protected static void write(String s, ServletOutputStream out) throws IOException {
    out.write(s.getBytes("UTF-8"));
}

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From source file:com.octo.captcha.module.web.image.ImageToJpegHelper.java

/**
 * retrieve a new ImageCaptcha using ImageCaptchaService and flush it to the response.<br/> Captcha are localized
 * using request locale.<br/>//from  www .j a  v a 2 s.  co  m
 * <p/>
 * This method returns a 404 to the client instead of the image if the request isn't correct (missing parameters,
 * etc...)..<br/> The log may be null.<br/>
 *
 * @param theRequest  the request
 * @param theResponse the response
 * @param log         a commons logger
 * @param service     an ImageCaptchaService instance
 *
 * @throws java.io.IOException if a problem occurs during the jpeg generation process
 */
public static void flushNewCaptchaToResponse(HttpServletRequest theRequest, HttpServletResponse theResponse,
        Log log, ImageCaptchaService service, String id, Locale locale) throws IOException {

    // call the ImageCaptchaService method to retrieve a captcha
    byte[] captchaChallengeAsJpeg = null;
    ByteArrayOutputStream jpegOutputStream = new ByteArrayOutputStream();
    try {
        BufferedImage challenge = service.getImageChallengeForID(id, locale);
        // the output stream to render the captcha image as jpeg into

        ImageIO.write(challenge, "jpg", jpegOutputStream);

    } catch (IllegalArgumentException e) {
        //    log a security warning and return a 404...
        if (log != null && log.isWarnEnabled()) {
            log.warn("There was a try from " + theRequest.getRemoteAddr()
                    + " to render an captcha with invalid ID :'" + id + "' or with a too long one");
            theResponse.sendError(HttpServletResponse.SC_NOT_FOUND);
            return;
        }
    }

    captchaChallengeAsJpeg = jpegOutputStream.toByteArray();

    // render the captcha challenge as a JPEG image in the response
    theResponse.setHeader("Cache-Control", "no-store");
    theResponse.setHeader("Pragma", "no-cache");
    theResponse.setDateHeader("Expires", 0);

    theResponse.setContentType("image/jpeg");
    ServletOutputStream responseOutputStream = theResponse.getOutputStream();
    responseOutputStream.write(captchaChallengeAsJpeg);
    responseOutputStream.flush();
    responseOutputStream.close();
}

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From source file:com.octo.captcha.module.web.sound.SoundToWavHelper.java

/**
 * retrieve a new SoundCaptcha using SoundCaptchaService and flush it to the response. <br/> Captcha are localized
 * using request locale. <br/>This method returns a 404 to the client instead of the image if the request isn't
 * correct (missing parameters, etc...).. <br/>The log may be null. <br/>
 *
 * @param theRequest  the request/* www  . j a v  a  2  s. c  o  m*/
 * @param theResponse the response
 * @param log         a commons logger
 * @param service     an SoundCaptchaService instance
 *
 * @throws java.io.IOException if a problem occurs during the jpeg generation process
 */
public static void flushNewCaptchaToResponse(HttpServletRequest theRequest, HttpServletResponse theResponse,
        Log log, SoundCaptchaService service, String id, Locale locale) throws IOException {

    // call the ImageCaptchaService method to retrieve a captcha
    byte[] captchaChallengeAsWav = null;
    ByteArrayOutputStream wavOutputStream = new ByteArrayOutputStream();
    try {
        AudioInputStream stream = service.getSoundChallengeForID(id, locale);

        // call the ImageCaptchaService method to retrieve a captcha

        AudioSystem.write(stream, AudioFileFormat.Type.WAVE, wavOutputStream);
        //AudioSystem.(pAudioInputStream, AudioFileFormat.Type.WAVE, pFile);

    } catch (IllegalArgumentException e) {
        //    log a security warning and return a 404...
        if (log != null && log.isWarnEnabled()) {
            log.warn("There was a try from " + theRequest.getRemoteAddr()
                    + " to render an captcha with invalid ID :'" + id + "' or with a too long one");
            theResponse.sendError(HttpServletResponse.SC_NOT_FOUND);
            return;
        }
    } catch (CaptchaServiceException e) {
        // log and return a 404 instead of an image...
        if (log != null && log.isWarnEnabled()) {
            log.warn(

                    "Error trying to generate a captcha and " + "render its challenge as JPEG", e);
        }
        theResponse.sendError(HttpServletResponse.SC_NOT_FOUND);
        return;
    }
    captchaChallengeAsWav = wavOutputStream.toByteArray();

    // render the captcha challenge as a JPEG image in the response
    theResponse.setHeader("Cache-Control", "no-store");
    theResponse.setHeader("Pragma", "no-cache");
    theResponse.setDateHeader("Expires", 0);

    theResponse.setContentType("audio/x-wav");
    ServletOutputStream responseOutputStream = theResponse.getOutputStream();
    responseOutputStream.write(captchaChallengeAsWav);
    responseOutputStream.flush();
    responseOutputStream.close();
}

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From source file:strutter.helper.WSActionHelper.java

public static void writeBody(byte[] val) throws Exception {
    ServletOutputStream writer = ActionHelper.getResponse().getOutputStream();

    writer.write(val);

    writer.close();/*w  w  w  . j a v a  2 s.co  m*/
}

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From source file:ch.ralscha.extdirectspring.util.ExtDirectSpringUtil.java

/**
 * Checks etag and sends back HTTP status 304 if not modified. If modified sets
 * content type and content length, adds cache headers (
 * {@link #addCacheHeaders(HttpServletResponse, String, Integer)}), writes the data
 * into the {@link HttpServletResponse#getOutputStream()} and flushes it.
 *
 * @param request the HTTP servlet request
 * @param response the HTTP servlet response
 * @param data the response data//from   ww  w .j a v  a  2  s .co  m
 * @param contentType the content type of the data (i.e.
 * "application/javascript;charset=UTF-8")
 * @throws IOException
 */
public static void handleCacheableResponse(HttpServletRequest request, HttpServletResponse response,
        byte[] data, String contentType) throws IOException {
    String ifNoneMatch = request.getHeader("If-None-Match");
    String etag = "\"0" + DigestUtils.md5DigestAsHex(data) + "\"";

    if (etag.equals(ifNoneMatch)) {
        response.setStatus(HttpServletResponse.SC_NOT_MODIFIED);
        return;
    }

    response.setContentType(contentType);
    response.setContentLength(data.length);

    addCacheHeaders(response, etag, 6);

    @SuppressWarnings("resource")
    ServletOutputStream out = response.getOutputStream();
    out.write(data);
    out.flush();
}

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From source file:org.jivesoftware.openfire.reporting.graph.GraphServlet.java

private static void writeImageContent(HttpServletResponse response, byte[] imageData, String contentType)
        throws IOException {
    ServletOutputStream os = response.getOutputStream();
    response.setContentType(contentType);
    os.write(imageData);
    os.flush();/*from   w w  w .  ja  v  a  2 s . c o m*/
    os.close();
}

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From source file:org.openmrs.module.idcards.web.servlet.PrintEmptyIdcardsServlet.java

/**
 * Write the pdf to the given response//from  w w  w . ja va 2s . c  o  m
 */
@SuppressWarnings("unchecked")
public static void generateOutputForIdentifiers(IdcardsTemplate card, String baseURL,
        HttpServletResponse response, List<String> identifiers, String password)
        throws ServletException, IOException {

    Properties props = new Properties();
    props.setProperty(RuntimeConstants.RESOURCE_LOADER, "class");
    props.setProperty("class.resource.loader.description", "VelocityClasspathResourceLoader");
    props.setProperty("class.resource.loader.class",
            "org.apache.velocity.runtime.resource.loader.ClasspathResourceLoader");
    props.setProperty(RuntimeConstants.RUNTIME_LOG_LOGSYSTEM_CLASS,
            "org.apache.velocity.runtime.log.NullLogSystem");

    // do the velocity magic
    Writer writer = new StringWriter();
    try {
        // Allow images to be served from Unix servers.
        try {
            java.awt.GraphicsEnvironment.getLocalGraphicsEnvironment();
        } catch (Throwable t) {
            log.warn(
                    "Unable to get graphics environment.  "
                            + "Make sure that -Djava.awt.headless=true is defined as a JAVA OPT during startup",
                    t);
        }
        Velocity.init(props);
        VelocityContext velocityContext = new VelocityContext();
        velocityContext.put("locale", Context.getLocale());
        velocityContext.put("identifiers", identifiers);
        velocityContext.put("baseURL", baseURL);
        Velocity.evaluate(velocityContext, writer, PrintEmptyIdcardsServlet.class.getName(), card.getXml());
    } catch (ParseErrorException e) {
        throw new ServletException("Error parsing template: ", e);
    } catch (MethodInvocationException e) {
        throw new ServletException("Error parsing template: ", e);
    } catch (ResourceNotFoundException e) {
        throw new ServletException("Error parsing template: ", e);
    } catch (Exception e) {
        throw new ServletException("Error initializing Velocity engine", e);
    } finally {
        System.gc();
    }

    try {
        //Setup a buffer to obtain the content length
        ByteArrayOutputStream out = new ByteArrayOutputStream();

        FopFactory fopFactory = FopFactory.newInstance();

        //fopFactory supports customization with a config file
        //Load the config file before creating the user agent.
        String userConfigFile = Context.getAdministrationService()
                .getGlobalProperty("idcards.fopConfigFilePath");
        if (userConfigFile != null) {
            try {
                fopFactory.setUserConfig(new java.io.File(userConfigFile));
                log.debug("Successfully loaded config file |" + userConfigFile + "|");
            } catch (Exception e) {
                log.error("Could not initialize fopFactory user config with file at " + userConfigFile
                        + ". Error message:" + e.getMessage());
            }
        }

        FOUserAgent foUserAgent = fopFactory.newFOUserAgent();
        foUserAgent.getRendererOptions().put("encryption-params",
                new PDFEncryptionParams(password, null, true, false, false, false));

        //Setup FOP
        Fop fop = fopFactory.newFop(MimeConstants.MIME_PDF, foUserAgent, out);

        //Setup Transformer
        Source xsltSrc = new StreamSource(new StringReader(card.getXslt()));
        TransformerFactory tFactory = TransformerFactory.newInstance();
        Transformer transformer = tFactory.newTransformer(xsltSrc);

        //Make sure the XSL transformation's result is piped through to FOP
        Result res = new SAXResult(fop.getDefaultHandler());

        //Setup input
        String xml = writer.toString();
        Source src = new StreamSource(new StringReader(xml));

        //Start the transformation and rendering process
        transformer.transform(src, res);

        //Prepare response
        String time = new SimpleDateFormat("yyyy-MM-dd_Hms").format(new Date());
        String filename = card.getName().replace(" ", "_") + "-" + time + ".pdf";
        response.setHeader("Content-Disposition", "attachment; filename=" + filename);
        response.setContentType("application/pdf");
        response.setContentLength(out.size());

        //Send content to Browser
        ServletOutputStream outputStream = response.getOutputStream();
        outputStream.write(out.toByteArray());
        outputStream.flush();
    } catch (FOPException e) {
        throw new ServletException("Error generating report", e);
    } catch (TransformerConfigurationException e) {
        throw new ServletException("Error generating report", e);
    } catch (TransformerException e) {
        throw new ServletException("Error generating report", e);
    }
}

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From source file:pt.ua.dicoogle.server.web.IndexerServlet.java

/**
 * Writes the specified XML document in String form to a HttpServletResponse
 * object./* www  .  j a  va 2s  . c o m*/
 * 
 * @param xml
 *            a XML document in String form.
 * @param response
 *            a HttpServletResponse.
 * @throws IOException
 *             if a error has occurred while writing the response.
 */
private static void writeXMLToResponse(String xml, HttpServletResponse response, boolean allowCache)
        throws IOException {
    // get the returned xml as a UTF-8 byte array
    byte[] data = xml.getBytes("UTF-8");
    if (data == null) {
        response.sendError(500, "Could generate the resulting XML document!");
        return;
    }

    if (!allowCache) {
        response.addHeader("Cache-Control", "no-cache, must-revalidate");
        response.addHeader("Pragma", "no-cache");
    }

    response.setContentType("application/xml"); // set the appropriate type
    // for the XML file
    response.setContentLength(data.length); // set the document size
    // response.setCharacterEncoding("UTF-8"); // set the apropriate
    // encoding type

    // write the XML data to the response output
    ServletOutputStream out = response.getOutputStream();
    out.write(data);
    out.close();
}

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From source file:com.soolr.core.web.Servlets.java

public static void output(HttpServletResponse response, String contentType, Object content) throws IOException {
    ServletOutputStream output = response.getOutputStream();
    try {/*from   w  ww. j a  va2s. c o m*/
        response.setContentType(contentType);
        if (content instanceof byte[]) {
            byte[] temp = (byte[]) content;
            output.write(temp);
        } else if (content instanceof String) {
            output.print(String.valueOf(content));
        }
    } finally {
        output.flush();
        output.close();
    }
}

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