Example usage for javax.servlet.http HttpServletResponse setDateHeader

Introduction

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

Prototype

public void setDateHeader(String name, long date);

Source Link

Document

Sets a response header with the given name and date-value.

Usage

From source file:com.kappaware.logtrawler.Utils.java

public static void setCache(HttpServletResponse response, int cacheValue) {
    if (cacheValue == 0) {
        response.setHeader(HEADER_PRAGMA, "no-cache");
        // HTTP 1.0 header
        response.setDateHeader(HEADER_EXPIRES, 1L);
        // HTTP 1.1 header: "no-cache" is the standard value,
        // "no-store" is necessary to prevent caching on FireFox.
        response.setHeader(HEADER_CACHE_CONTROL, "no-cache");
        response.addHeader(HEADER_CACHE_CONTROL, "no-store");
        response.addHeader(HEADER_CACHE_CONTROL, "must-revalidate");
        response.addHeader(HEADER_CACHE_CONTROL, "post-check=0");
        response.addHeader(HEADER_CACHE_CONTROL, "pre-check=0");

    } else {/*from   www.ja v  a  2s.c  o  m*/
        response.setHeader(HEADER_CACHE_CONTROL, "public");
        long now = (new Date()).getTime();
        response.setDateHeader("Date", now);
        response.setDateHeader(HEADER_EXPIRES, now + (cacheValue * 1000L));
        // HTTP 1.1 header
        String headerValue = "max-age=" + Long.toString(cacheValue);
        response.setHeader(HEADER_CACHE_CONTROL, headerValue);
    }
}

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

/**
 *  Header./* ww  w .j ava 2  s  .  c o m*/
 */
public static void setExpiresHeader(HttpServletResponse response, long expiresSeconds) {
    // Http 1.0 header, set a fix expires date.
    response.setDateHeader("Expires", System.currentTimeMillis() + expiresSeconds * 1000);
    // Http 1.1 header, set a time after now.
    response.setHeader("Cache-Control", "private, max-age=" + expiresSeconds);
}

From source file:dk.dma.msinm.common.util.WebUtils.java

/**
 * Add headers to the response to ensure caching in the given duration
 * @param response the response//from   ww w .  ja v a 2  s  .c o m
 * @param seconds the number of seconds to cache the response
 * @return the response
 */
public static HttpServletResponse cache(HttpServletResponse response, int seconds) {
    long now = System.currentTimeMillis();
    response.addHeader("Cache-Control", "max-age=" + seconds);
    response.setDateHeader("Last-Modified", now);
    response.setDateHeader("Expires", now + seconds * 1000L);
    return response;
}

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

private static void addFaultHeader(HttpServletResponse response) {
    response.setStatus(500);// ww  w.ja  va2  s .c  o  m
    response.setContentType("text/xml; charset=utf-8");
    response.setHeader("Server", "LanguageGrid-CoreNode/1.0");
    response.setDateHeader("Date", new Date().getTime());
}

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

/**
 *  Header.//from  w  ww . j  a  v  a 2 s  .  c  om
 */
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./*from   w w  w.java  2 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:dk.dma.msinm.common.util.WebUtils.java

/**
 * Add headers to the response to ensure no caching takes place
 * @param response the response/*w w  w. j av a  2  s  . c  om*/
 * @return the response
 */
public static HttpServletResponse nocache(HttpServletResponse response) {
    response.setHeader("Cache-Control", "no-cache");
    response.setHeader("Cache-Control", "no-store");
    response.setHeader("Pragma", "no-cache");
    response.setDateHeader("Expires", 0);
    return response;
}

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

/**
 * Header.//  w w  w  . ja v  a2 s.  c o 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:org.jahia.utils.WebUtils.java

/**
 * Sets proper response headers to prevent caching of this response.
 * /*from  w  w  w  . j a  v  a 2 s  .  c om*/
 * @param response
 *            current response object
 */
public static void setNoCacheHeaders(HttpServletResponse response) {
    response.setHeader("Cache-Control", "no-cache, no-store, must-revalidate, proxy-revalidate, max-age=0");
    response.setHeader("Pragma", "no-cache");
    response.setDateHeader("Expires", 295075800000L);
}

From source file:com.klwork.common.utils.WebUtils.java

/**
 * ???//from w  ww.j av  a 2  s.  c  om
 * @param request
 * @param response
 */
public static void VerificationCode(HttpServletRequest request, HttpServletResponse response) throws Exception {
    response.setHeader("Pragma", "No-cache");
    response.setHeader("Cache-Control", "no-cache");
    response.setDateHeader("Expires", 0);
    // 
    int width = 60, height = 20;
    BufferedImage image = new BufferedImage(width, height, BufferedImage.TYPE_INT_RGB);

    // ?
    Graphics g = image.getGraphics();

    // ??
    Random random = new Random();

    // 
    g.setColor(getRandColor(200, 250));
    g.fillRect(0, 0, width, height);

    // 
    g.setFont(new Font("Times New Roman", Font.PLAIN, 18));

    // 
    // g.setColor(new Color());
    // g.drawRect(0,0,width-1,height-1);

    // ?155?????
    g.setColor(getRandColor(160, 200));
    for (int i = 0; i < 155; i++) {
        int x = random.nextInt(width);
        int y = random.nextInt(height);
        int xl = random.nextInt(12);
        int yl = random.nextInt(12);
        g.drawLine(x, y, x + xl, y + yl);
    }

    String base = "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQUSTUVWXYZ0123456789";
    // ????(4?)
    String sRand = "";
    for (int i = 0; i < 4; i++) {
        int start = random.nextInt(base.length());
        String rand = base.substring(start, start + 1);
        sRand = sRand.concat(rand);
        // ??
        g.setColor(new Color(20 + random.nextInt(110), 20 + random.nextInt(110), 20 + random.nextInt(110)));
        g.drawString(rand, 13 * i + 6, 16);
    }

    // ??SESSION
    request.getSession().setAttribute("entrymrand", sRand);

    // 
    g.dispose();
    OutputStream out = response.getOutputStream();
    // ?
    ImageIO.write(image, "JPEG", out);

    out.flush();
    out.close();
}