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:alfio.controller.AdminController.java

private static void downloadTicketsCSV(String eventName, String fileName, String[] header, Principal principal,
        HttpServletResponse response, EventManager eventManager, Function<Ticket, String[]> ticketMapper)
        throws IOException {
    Validate.isTrue(StringUtils.isNotBlank(eventName), "Event name is not valid");
    List<Ticket> tickets = eventManager.findAllConfirmedTickets(eventName, principal.getName());
    response.setContentType("text/csv;charset=UTF-8");
    response.setHeader("Content-Disposition", "attachment; filename=" + eventName + "-" + fileName + ".csv");
    try (ServletOutputStream out = response.getOutputStream()) {
        for (int marker : BOM_MARKERS) {//UGLY-MODE_ON: specify that the file is written in UTF-8 with BOM, thanks to alexr http://stackoverflow.com/a/4192897
            out.write(marker);/* www  .  j a v  a 2  s  . c om*/
        }
        CSVWriter writer = new CSVWriter(new OutputStreamWriter(out));
        writer.writeNext(header);
        tickets.stream().map(ticketMapper).forEach(writer::writeNext);
        writer.flush();
        out.flush();
    }
}

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

/**
 *  Header./* w w w . j  a  va2 s .  c o  m*/
 */
public static void setExpiresHeader(HttpServletResponse response, long expiresSeconds) {

    // Http 1.0 header, set a fix expires date.

    response.setDateHeader(HttpHeaders.EXPIRES, System.currentTimeMillis() + expiresSeconds * 1000);

    // Http 1.1 header, set a time after now.

    response.setHeader(HttpHeaders.CACHE_CONTROL, "private, max-age=" + expiresSeconds);

}

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

/**
 *  Header./* w w w. ja v a2 s  .co m*/
 */
public static void setExpiresHeader(HttpServletResponse response, long expiresSeconds) {

    // Http 1.0 header, set a fix expires date.
    response.setDateHeader(HttpHeaders.EXPIRES, System.currentTimeMillis() + expiresSeconds * 1000);
    // Http 1.1 header, set a time after now.
    response.setHeader(HttpHeaders.CACHE_CONTROL, "private, max-age=" + expiresSeconds);
}

From source file:com.ccf.util.ModDateHeaderUtil.java

/**
 * ??//from ww  w.  j  a v a2  s .  c o  m
 * @param response
 */
public static void setLastModifiedHeader(HttpServletResponse response) {
    SimpleDateFormat df = new SimpleDateFormat("E, d MMM yyyy HH:mm:ss");
    Calendar lastModifiedCal = Calendar.getInstance(TimeZone.getTimeZone("GMT"));
    String lastModified = df.format(lastModifiedCal.getTime());

    Calendar cal = Calendar.getInstance(TimeZone.getTimeZone("GMT"));
    response.setHeader("Date", df.format(cal.getTime()) + " GMT");
    cal.add(Calendar.DAY_OF_MONTH, 1);
    // response.setHeader("Expires",df.format(cal.getTime())+" GMT");
    response.setHeader("Retry-After", df.format(cal.getTime()) + " GMT");
    response.setHeader("Cache-Control", "public");
    //response.setHeader("Last-Modified",lastModified+" GMT");

    response.setDateHeader("Last-Modified", System.currentTimeMillis() - 60 * 60 * 1000);
    // Force clients to revalidate each time
    // See RFC 2616 (HTTP 1.1 spec) secs 14.21, 13.2.1
    response.setDateHeader("Expires", System.currentTimeMillis() + (expiresOffset * 1000));
    // We may also want this (See 13.2.1 and 14.9.4)
    // response.setHeader("Cache-Control","must-revalidate");
}

From source file:org.artifactory.webapp.servlet.RequestUtils.java

/**
 * Verifies user agent is Internet Explorer according to:
 * https://msdn.microsoft.com/en-us/library/hh869301(v=vs.85).aspx
 * https://msdn.microsoft.com/en-us/library/ms537503(v=vs.85).aspx
 * http://www.useragentstring.com/pages/Internet%20Explorer/
 *
 * And adds the compatibility header to avoid explorer defaulting to IE7 mode when launching compatibility view.
 * see RTFACT-7928/*from www.j av  a2  s.c o  m*/
 */
private static void verifyExplorerUserAgentAndSetHeader(HttpServletRequest request,
        HttpServletResponse response) {
    String userAgent = request.getHeader(HttpHeaders.USER_AGENT);
    if (isNewExplorer(userAgent)) {
        response.setHeader("X-UA-Compatible", "IE=Edge");
    }
}

From source file:com.lll.util.ServletUtils.java

/**
 * Header./*from   w  w w  . j  a va  2s .co  m*/
 */
public static void setNoCacheHeader(HttpServletResponse response) {
    //Http 1.0 header
    response.setDateHeader("Expires", 0);
    response.addHeader("Pragma", "no-cache");
    //Http 1.1 header
    response.setHeader("Cache-Control", "no-cache");
}

From source file:de.betterform.agent.web.WebUtil.java

public static void nonCachingResponse(HttpServletResponse response) {
    response.setHeader("Cache-Control", "private, no-store,  no-cache, must-revalidate");
    response.setHeader("Pragma", "no-cache");
    response.setHeader("Expires", "-1");
}

From source file:lc.kra.servlet.FileManagerServlet.java

private static void downloadFile(HttpServletResponse response, File file, String name, String contentType)
        throws IOException {
    response.setContentType(contentType);
    response.setHeader("Content-Disposition", "attachment; filename=\"" + name + "\"");
    copyStream(new FileInputStream(file), response.getOutputStream());
}

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

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

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

    writeImage(response, imageData, width, height, "png");
}

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

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

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

    writeImage(response, imageData, width, height, "gif");
}