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: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 w  w .  j a v  a 2  s  .  c o m
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  w ww.  j av  a 2 s .  com
 */
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");
}

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From source file:org.nuxeo.theme.html.Utils.java

public static void setCacheHeaders(final HttpServletResponse response, final CachingDef caching) {
    if (caching != null) {
        final String lifetime = caching.getLifetime();
        if (lifetime != null) {
            final long now = System.currentTimeMillis();
            response.addHeader("Cache-Control", "max-age=" + lifetime);
            response.addHeader("Cache-Control", "must-revalidate");
            response.setDateHeader("Last-Modified", now);
            response.setDateHeader("Expires", now + new Long(lifetime) * 1000L);
        }/*from  w w w  . ja v  a 2s .co m*/
    }
}

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From source file:org.openlegacy.tools.maven.SessionRunner.java

private static void handleJsFiles(HttpServletRequest request, HttpServletResponse response, String uri)
        throws IOException {
    PathMatchingResourcePatternResolver pathResolver = new PathMatchingResourcePatternResolver();
    Resource resource = pathResolver.getResource(uri);
    if (resource == null) {
        throw (new RuntimeException("Unable to find resource:" + uri));
    }/*from w w  w.  j  av  a 2  s.  c  o m*/
    response.setDateHeader(HEADER_EXPIRES, Long.MAX_VALUE);
    IOUtils.copy(resource.getInputStream(), response.getOutputStream());
    response.setStatus(HttpServletResponse.SC_OK);
    ((Request) request).setHandled(true);
}

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From source file:com.igrow.mall.common.util.Struts2Utils.java

/**
 * ./*from w w  w .  j  a va2s  . c  om*/
        
 * eg.
 * render("text/plain", "hello", "encoding:GBK");
 * render("text/plain", "hello", "no-cache:false");
 * 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);
    }
}

---

From source file:org.apdplat.platform.util.Struts2Utils.java

public static void render(final String contentType, final String content, final String... headers) {
    try {//from  w ww .j  a  v  a2 s  .c o  m
        //?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) {
        LOG.error(e.getMessage(), e);
    }
}

---

From source file:org.apache.solr.servlet.cache.HttpCacheHeaderUtil.java

/**
 * Sets HTTP Response cache validator headers appropriately and
 * validates the HTTP Request against these using any conditional
 * request headers./*  ww  w  .  j av  a2  s.  c om*/
 *
 * If the request contains conditional headers, and those headers
 * indicate a match with the current known state of the system, this
 * method will return "true" indicating that a 304 Status code can be
 * returned, and no further processing is needed.
 *
 * 
 * @return true if the request contains conditional headers, and those
 *         headers indicate a match with the current known state of the
 *         system -- indicating that a 304 Status code can be returned to
 *         the client, and no further request processing is needed.  
 */
public static boolean doCacheHeaderValidation(final SolrQueryRequest solrReq, final HttpServletRequest req,
        final Method reqMethod, final HttpServletResponse resp) throws IOException {

    if (Method.POST == reqMethod || Method.OTHER == reqMethod) {
        return false;
    }

    final long lastMod = HttpCacheHeaderUtil.calcLastModified(solrReq);
    final String etag = HttpCacheHeaderUtil.calcEtag(solrReq);

    resp.setDateHeader("Last-Modified", lastMod);
    resp.setHeader("ETag", etag);

    if (checkETagValidators(req, resp, reqMethod, etag)) {
        return true;
    }

    if (checkLastModValidators(req, resp, lastMod)) {
        return true;
    }

    return false;
}

---

From source file:org.sakaiproject.evaluation.tool.utils.RenderingUtils.java

/**
 * Set the no-cache headers for this response
 * @param res the servlet response/*w  ww.j  a  v  a  2s.  com*/
 */
public static void setNoCacheHeaders(HttpServletResponse res) {
    long currentTime = System.currentTimeMillis();
    res.setDateHeader(Header.DATE.toString(), currentTime);
    res.setDateHeader(Header.EXPIRES.toString(), currentTime + 1000);

    res.setHeader(Header.CACHE_CONTROL.toString(), "no-cache");
    res.addHeader(Header.CACHE_CONTROL.toString(), "no-store");
    res.addHeader(Header.CACHE_CONTROL.toString(), "max-age=0");
    res.addHeader(Header.CACHE_CONTROL.toString(), "must-revalidate");
    res.addHeader(Header.CACHE_CONTROL.toString(), "private");
    res.addHeader(Header.CACHE_CONTROL.toString(), "s-maxage=0");
}

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

/**
 * .//from w w w .ja  v a2  s  .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);
    }
}

---

From source file:cn.guoyukun.spring.web.utils.DownloadUtils.java

public static void download(HttpServletRequest request, HttpServletResponse response, String displayName,
        byte[] bytes) throws IOException {

    if (ArrayUtils.isEmpty(bytes)) {
        response.setContentType("text/html;charset=utf-8");
        response.setCharacterEncoding("utf-8");
        response.getWriter().write("??");
        return;//from w w w. j  a v a  2  s . c  o  m
    }

    String userAgent = request.getHeader("User-Agent");
    boolean isIE = (userAgent != null) && (userAgent.toLowerCase().indexOf("msie") != -1);

    response.reset();
    response.setHeader("Pragma", "No-cache");
    response.setHeader("Cache-Control", "must-revalidate, no-transform");
    response.setDateHeader("Expires", 0L);

    response.setContentType("application/x-download");
    response.setContentLength((int) bytes.length);

    String displayFilename = displayName.substring(displayName.lastIndexOf("_") + 1);
    displayFilename = displayFilename.replace(" ", "_");
    if (isIE) {
        displayFilename = URLEncoder.encode(displayFilename, "UTF-8");
        response.setHeader("Content-Disposition", "attachment;filename=\"" + displayFilename + "\"");
    } else {
        displayFilename = new String(displayFilename.getBytes("UTF-8"), "ISO8859-1");
        response.setHeader("Content-Disposition", "attachment;filename=" + displayFilename);
    }
    BufferedInputStream is = null;
    OutputStream os = null;
    try {

        os = response.getOutputStream();
        is = new BufferedInputStream(new ByteArrayInputStream(bytes));
        IOUtils.copy(is, os);
    } catch (Exception e) {
        e.printStackTrace();
    } finally {
        IOUtils.closeQuietly(is);
    }
}

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