Example usage for javax.servlet.http HttpServletResponse addHeader

Introduction

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

Prototype

public void addHeader(String name, String value);

Source Link

Document

Adds a response header with the given name and value.

Usage

From source file:com.mtt.myapp.common.util.FileDownloadUtil.java

/**
 * Provide file download from the given file path.
 * @param response {@link javax.servlet.http.HttpServletResponse}
 * @param desFile file path/*w w w .  j av  a 2s  .com*/
 * @return true if succeeded
 */
public static boolean downloadFile(HttpServletResponse response, File desFile) {
    if (desFile == null || !desFile.exists()) {
        return false;
    }
    boolean result = true;
    response.reset();
    response.addHeader("Content-Disposition", "attachment;filename=" + desFile.getName());
    response.setContentType("application/octet-stream");
    response.addHeader("Content-Length", "" + desFile.length());
    InputStream fis = null;
    byte[] buffer = new byte[FILE_DOWNLOAD_BUFFER_SIZE];
    OutputStream toClient = null;
    try {
        fis = new BufferedInputStream(new FileInputStream(desFile));
        toClient = new BufferedOutputStream(response.getOutputStream());
        int readLength;
        while (((readLength = fis.read(buffer)) != -1)) {
            toClient.write(buffer, 0, readLength);
        }
        toClient.flush();
    } catch (FileNotFoundException e) {
        LOGGER.error("file not found:" + desFile.getAbsolutePath(), e);
        result = false;
    } catch (IOException e) {
        LOGGER.error("read file error:" + desFile.getAbsolutePath(), e);
        result = false;
    } finally {
        IOUtils.closeQuietly(fis);
        IOUtils.closeQuietly(toClient);
    }
    return result;
}

From source file:com.xsw.utils.Servlets.java

/**
 * ?Header.//from  w  w w  . jav a2s  . co  m
 */
public static void setNoCacheHeader(HttpServletResponse response) {
    // Http 1.0 header
    response.setDateHeader("Expires", 1L);
    response.addHeader("Pragma", "no-cache");
    // Http 1.1 header
    response.setHeader("Cache-Control", "no-cache, no-store, max-age=0");
}

From source file:cn.com.qiqi.order.utils.Servlets.java

/**
 * ?Header.//w  w w .  j a  v a 2  s  .  co  m
 */
public static void setNoCacheHeader(HttpServletResponse response) {
    // Http 1.0 header
    response.setDateHeader(HttpHeaders.EXPIRES, 1L);
    response.addHeader(HttpHeaders.PRAGMA, "no-cache");
    // Http 1.1 header
    response.setHeader(HttpHeaders.CACHE_CONTROL, "no-cache, no-store, max-age=0");
}

From source file:com.sobey.framework.utils.Servlets.java

/**
 * ?Header./*from   w w  w  . ja va 2 s .c  o m*/
 */
public static void setNoCacheHeader(HttpServletResponse response) {

    // Http 1.0 header

    response.setDateHeader(HttpHeaders.EXPIRES, 1L);

    response.addHeader(HttpHeaders.PRAGMA, "no-cache");

    // Http 1.1 header

    response.setHeader(HttpHeaders.CACHE_CONTROL, "no-cache, no-store, max-age=0");
}

From source file:com.cnksi.core.web.utils.Servlets.java

/**
 * ?Header.//from   www  .j  av a  2 s  . co m
 */
public static void setNoCacheHeader(HttpServletResponse response) {

    // Http 1.0 header
    response.setDateHeader(HttpHeaders.EXPIRES, 1L);
    response.addHeader(HttpHeaders.PRAGMA, "no-cache");
    // Http 1.1 header
    response.setHeader(HttpHeaders.CACHE_CONTROL, "no-cache, no-store, max-age=0");
}

From source file:co.com.realtech.mariner.util.jsf.file.FileDownloader.java

/**
 * Descargar excel a travs del FacesContext.
 *
 * @param context/*from   w ww .jav a2s.c o  m*/
 * @param bytes
 * @param nombreArchivo
 */
private static void descargarArchivo(FacesContext context, byte[] bytes, String nombreArchivo,
        String extension) {
    ExternalContext externalContext = context.getExternalContext();
    HttpServletResponse response = (HttpServletResponse) externalContext.getResponse();
    try {
        try (ServletOutputStream servletOutputStream = response.getOutputStream()) {
            response.addHeader("Content-Type", "application/" + extension);
            response.addHeader("Content-Disposition",
                    "attachment; filename=" + nombreArchivo + "." + extension);
            response.setContentLength(bytes.length);
            response.setContentType("application/" + extension);
            servletOutputStream.write(bytes);
            servletOutputStream.flush();
            context.responseComplete();
        }
    } catch (Exception e) {
        System.out.println("Error enviando reporte al cliente, error causado por " + e);
    }
}

From source file:jp.go.nict.langrid.foundation.servlet.ResponseProcessor.java

private static void addLangridHeaders(Map<String, List<String>> src, HttpServletResponse dst) {
    for (Map.Entry<String, List<String>> e : src.entrySet()) {
        if (e.getKey().startsWith("X-LanguageGrid-")) {
            for (String v : e.getValue()) {
                dst.addHeader(e.getKey(), v);
            }//from w w w .j av  a 2  s .  com
        }
    }
}

From source file:com.kenlin.awsec2offering.App.java

public static void addCORSHeaders(HttpServletResponse resp) {
    resp.addHeader("Access-Control-Allow-Origin", "*");
    resp.addHeader("Access-Control-Allow-Methods", "GET");
    resp.addHeader("Access-Control-Allow-Headers", "Content-Type");
}

From source file:at.gv.egiz.bku.online.webapp.MoccaParameterBean.java

public static void setP3PHeader(Configuration config, HttpServletResponse response) {
    if (config.getBoolean(ENABLE_P3P_HEADER, false)) {
        // Set P3P Policy Header
        response.addHeader("P3P", P3P_POLICY);
    }//from ww  w  .  ja v  a 2 s .c o m
}

From source file:gov.nih.nci.caarray.web.helper.DownloadHelper.java

/**
 * Zips the selected files and writes the result to the servlet output stream. Also sets content type and
 * disposition appropriately./*from  w w  w.j  a va  2  s  . co m*/
 * 
 * @param files the files to zip and send
 * @param baseFilename the filename w/o the suffix to use for the archive file. This filename will be set as the
 *            Content-disposition header
 * @throws IOException if there is an error writing to the stream
 */
public static void downloadFiles(Collection<CaArrayFile> files, String baseFilename) throws IOException {
    final HttpServletResponse response = ServletActionContext.getResponse();

    try {
        final PackagingInfo info = getPreferedPackageInfo(files, baseFilename);
        response.setContentType(info.getMethod().getMimeType());
        response.addHeader("Content-disposition", "filename=\"" + info.getName() + "\"");

        final List<CaArrayFile> sortedFiles = new ArrayList<CaArrayFile>(files);
        Collections.sort(sortedFiles, CAARRAYFILE_NAME_COMPARATOR_INSTANCE);
        final OutputStream sos = response.getOutputStream();
        final OutputStream closeShield = new CloseShieldOutputStream(sos);
        final ArchiveOutputStream arOut = info.getMethod().createArchiveOutputStream(closeShield);
        try {
            for (final CaArrayFile f : sortedFiles) {
                fileAccessUtils.addFileToArchive(f, arOut);
            }
        } finally {
            // note that the caller's stream is shielded from the close(),
            // but this is the only way to finish and flush the (gzip) stream.
            try {
                arOut.close();
            } catch (final Exception e) {
                LOG.error(e);
            }
        }
    } catch (final Exception e) {
        LOG.error("Error streaming download of files " + files, e);
        response.sendError(HttpServletResponse.SC_NOT_FOUND);
    }
}