Example usage for javax.servlet.http HttpServletResponse setHeader

Introduction

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

Prototype

public void setHeader(String name, String value);

Source Link

Document

Sets a response header with the given name and value.

Usage

From source file:net.duckling.ddl.web.bean.NginxAgent.java

/**
 * X-Accel-Redirectnignx// ww w .  j a  v  a 2 s. co  m
 * @param req
 * @param resp
 * @param fileName
 * @param fileSize
 * @param url
 */
public static void setRedirectUrl(HttpServletRequest req, HttpServletResponse resp, String fileName,
        long fileSize, String url) {
    if (fileSize > 0) {
        resp.addHeader(X_ACCEL_REDIRECT, url + "?agent="
                + Browser.recognizeBrowser(req.getHeader("USER-AGENT")).toString().toLowerCase());
    }

    // x_accel_redirect to nginx-clbs (gridfs) that
    // doesn't include Content-Disposition.
    // Set it here and the headers will be combined.
    resp.setHeader("Content-Disposition", Browser.encodeFileName(req.getHeader("USER-AGENT"), fileName));

}

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From source file:org.ambraproject.wombat.util.HttpMessageUtil.java

/**
 * Copy content with whitelisted headers between responses. Headers already written to {@code responseTo} are
 * <em>not</em> overwritten if {@code responseFrom} has a header with the same name.
 *
 * @param responseFrom an incoming response to copy from
 * @param responseTo   an outgoing response to copy into
 * @param headerFilter describes whether and how to copy headers
 * @throws IOException// w ww. j  a  v a 2 s  .  c  o m
 */
public static void copyResponseWithHeaders(HttpResponse responseFrom, HttpServletResponse responseTo,
        HeaderFilter headerFilter) throws IOException {
    for (Header header : responseFrom.getAllHeaders()) {
        String headerName = header.getName();
        if (!responseTo.containsHeader(headerName)) {
            String newValue = headerFilter.getValue(header);
            if (newValue != null) {
                responseTo.setHeader(headerName, newValue);
            }
        }
    }
    copyResponse(responseFrom, responseTo);
}

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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"//from   w w  w.jav  a2s . c o  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);
}

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From source file:com.jaspersoft.jasperserver.war.OlapGetChart.java

/**
 * Binary streams the specified file to the HTTP response in 1KB chunks
 *
 * @param file The file to be streamed.//from  ww w . j  a va2 s.  c o  m
 * @param response The HTTP response object.
 * @param mimeType The mime type of the file, null allowed.
 *
 * @throws IOException  if there is an I/O problem.
 * @throws FileNotFoundException  if the file is not found.
 */
public static void sendTempFile(File file, HttpServletResponse response, String mimeType)
        throws IOException, FileNotFoundException {

    if (file.exists()) {
        BufferedInputStream bis = new BufferedInputStream(new FileInputStream(file));

        //  Set HTTP headers
        if (mimeType != null) {
            response.setHeader("Content-Type", mimeType);
        }
        response.setHeader("Content-Length", String.valueOf(file.length()));
        SimpleDateFormat sdf = new SimpleDateFormat("EEE, dd MMM yyyy HH:mm:ss z");
        response.setHeader("Last-Modified", sdf.format(new Date(file.lastModified())));

        BufferedOutputStream bos = new BufferedOutputStream(response.getOutputStream());
        byte[] input = new byte[1024];
        boolean eof = false;
        while (!eof) {
            int length = bis.read(input);
            if (length == -1) {
                eof = true;
            } else {
                bos.write(input, 0, length);
            }
        }
        bos.flush();
        bis.close();
        bos.close();
    } else {
        throw new FileNotFoundException(file.getAbsolutePath());
    }
    return;
}

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From source file:jp.terasoluna.fw.web.struts.actions.FileDownloadUtil.java

/**
 * t@C?/*from   w ww  .  j  ava  2s  . com*/
 *
 * @param response X|X?B
 * @param name _E??[h?B
 * @param forceDownload ?_E??[h?B<code>true</code>???A??B
 */
protected static void setFileName(HttpServletResponse response, String name, boolean forceDownload) {

    if (forceDownload) {
        // LbV?IE?
        String contentDispositionValue = "attachment;" + " filename=" + name;
        response.setHeader(HEADER_CONTENT_DISPOSITION, contentDispositionValue);
    } else {
        String contentDispositionValue = "inline; filename=" + name;
        response.setHeader(HEADER_CONTENT_DISPOSITION, contentDispositionValue);
    }
}

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From source file:ch.rasc.downloadchart.DownloadChartServlet.java

private static void handleJpg(HttpServletResponse response, byte[] imageData, Integer width, Integer height,
        String filename, JpegOptions options) throws IOException {

    response.setContentType("image/jpeg");
    response.setHeader("Content-Disposition", "attachment; filename=\"" + filename + ".jpg\";");

    BufferedImage image = ImageIO.read(new ByteArrayInputStream(imageData));

    Dimension newDimension = calculateDimension(image, width, height);
    int imgWidth = image.getWidth();
    int imgHeight = image.getHeight();
    if (newDimension != null) {
        imgWidth = newDimension.width;// w  ww .  ja  v a 2  s  .  com
        imgHeight = newDimension.height;
    }

    BufferedImage newImage = new BufferedImage(imgWidth, imgHeight, BufferedImage.TYPE_INT_RGB);

    Graphics2D g = newImage.createGraphics();
    g.drawImage(image, 0, 0, imgWidth, imgHeight, Color.BLACK, null);
    g.dispose();

    if (newDimension != null) {
        g.setComposite(AlphaComposite.Src);
        g.setRenderingHint(RenderingHints.KEY_INTERPOLATION, RenderingHints.VALUE_INTERPOLATION_BILINEAR);
        g.setRenderingHint(RenderingHints.KEY_RENDERING, RenderingHints.VALUE_RENDER_QUALITY);
        g.setRenderingHint(RenderingHints.KEY_ANTIALIASING, RenderingHints.VALUE_ANTIALIAS_ON);
    }

    try (ImageOutputStream ios = ImageIO.createImageOutputStream(response.getOutputStream())) {
        Iterator<ImageWriter> iter = ImageIO.getImageWritersByFormatName("jpg");
        ImageWriter writer = iter.next();
        ImageWriteParam iwp = writer.getDefaultWriteParam();
        iwp.setCompressionMode(ImageWriteParam.MODE_EXPLICIT);
        if (options != null && options.quality != null && options.quality != 0 && options.quality != 100) {
            iwp.setCompressionQuality(options.quality / 100f);
        } else {
            iwp.setCompressionQuality(1);
        }
        writer.setOutput(ios);
        writer.write(null, new IIOImage(newImage, null, null), iwp);
        writer.dispose();
    }
}

---

From source file:com.adnature.framework.util.Struts2Utils.java

/**
 * .//  www  . j a  v  a 2s.c  o m
 * 
 * eg. <br/>
 * render("text/plain", "hello", "encoding:GBK"); <br/>
 * render("text/plain", "hello", "no-cache:false"); <br/>
 * render("text/plain", "hello", "encoding:GBK", "no-cache:false");
 * 
 * @param headers
 *            ??header??"encoding:""no-cache:",UTF-8true.
 */
public static void render(final String contentType, final String content, final String... headers) {
    try {
        // ?headers?
        String encoding = ENCODING_DEFAULT;
        boolean noCache = NOCACHE_DEFAULT;
        for (String header : headers) {
            String headerName = StringUtils.substringBefore(header, ":");
            String headerValue = StringUtils.substringAfter(header, ":");

            if (StringUtils.equalsIgnoreCase(headerName, ENCODING_PREFIX)) {
                encoding = headerValue;
            } else if (StringUtils.equalsIgnoreCase(headerName, NOCACHE_PREFIX)) {
                noCache = Boolean.parseBoolean(headerValue);
            } else {
                throw new IllegalArgumentException(headerName + "??header");
            }
        }

        HttpServletResponse response = ServletActionContext.getResponse();

        // headers?
        String fullContentType = contentType + ";charset=" + encoding;
        response.setContentType(fullContentType);
        if (noCache) {
            response.setHeader("Pragma", "No-cache");
            response.setHeader("Cache-Control", "no-cache");
            response.setDateHeader("Expires", 0);
        }

        response.getWriter().write(content);
        response.getWriter().flush();

    } catch (IOException e) {
        logger.error(e.getMessage(), e);
    }
}

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

/**
 * Adds Expires, ETag and Cache-Control response headers.
 *
 * @param response the HTTP servlet response
 * @param etag the calculated etag (md5) of the response
 * @param month number of months the response can be cached. Added to the Expires and
 * Cache-Control header. If null defaults to 6 months.
 *///from w  ww .  j  a v  a  2s  .  com
public static void addCacheHeaders(HttpServletResponse response, String etag, Integer month) {
    Assert.notNull(etag, "ETag must not be null");

    long seconds;
    if (month != null) {
        seconds = month * secondsInAMonth;
    } else {
        seconds = 6L * secondsInAMonth;
    }

    response.setDateHeader("Expires", System.currentTimeMillis() + seconds * 1000L);
    response.setHeader("ETag", etag);
    response.setHeader("Cache-Control", "public, max-age=" + seconds);
}

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From source file:com.lushapp.common.web.utils.WebUtils.java

/**
 * ??Header./*from ww  w .  j a  v  a  2s  .  c  o  m*/
 *
 * @param fileName ???.
 */
public static void setDownloadableHeader(HttpServletRequest request, HttpServletResponse response,
        String fileName) {
    try {
        if (BrowserUtils.isIE(request)) {
            response.setHeader("content-disposition",
                    "attachment;filename=\"" + java.net.URLEncoder.encode(fileName, "UTF-8") + "\"");
        } else {
            //???
            String encodedfileName = new String(fileName.getBytes(), "ISO8859-1");
            response.setHeader("Content-Disposition", "attachment; filename=\"" + encodedfileName + "\"");
        }

    } catch (UnsupportedEncodingException e) {
    }
}

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From source file:gov.nist.appvet.tool.synchtest.util.ReportUtil.java

/**
 * This method returns report information to the AppVet ToolAdapter as ASCII
 * text and cannot attach a file to the response.
 *///from   www . ja  va2s.c  om
public static boolean sendPDFInHttpResponse(HttpServletResponse response, String reportText,
        ToolStatus reportStatus) {
    try {
        File reportFile = new File(reportFilePath);
        String mimeType = new MimetypesFileTypeMap().getContentType(reportFile);
        log.debug("Sending mimetype: " + mimeType);
        response.setContentType(mimeType);
        response.setHeader("Content-Disposition", "attachment;filename=" + reportFile.getName());
        response.setStatus(HttpServletResponse.SC_OK); // HTTP 200
        response.setHeader("apprisk", reportStatus.name());

        FileInputStream inputStream = new FileInputStream(reportFile); //read the file

        try {
            int c;
            while ((c = inputStream.read()) != -1) {
                response.getWriter().write(c);
            }
        } finally {
            if (inputStream != null)
                inputStream.close();
            response.getWriter().close();
        }

        //         PrintWriter out = response.getWriter();
        //         out.println(reportText);
        //         out.flush();
        //         out.close();
        log.info("Returned report");
        return true;
    } catch (IOException e) {
        log.error("Report not sent: " + e.toString());
        return false;
    }
}

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