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:com.eryansky.common.web.utils.WebUtils.java

/**
 * ??Header.//w  w w .java  2 s . c om
 * 
 * @param fileName
 *            ???.
 */
public static void setDownloadableHeader(HttpServletResponse response, String fileName) {
    response.setHeader("Content-Disposition", "attachment; filename=\"" + fileName + "\"");
}

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

/**
 * Gzip HeaderGZIPOutputStream.//from   w ww .  j  ava  2  s.  c  om
 */
public static OutputStream buildGzipOutputStream(HttpServletResponse response) throws IOException {
    response.setHeader("Content-Encoding", "gzip");
    response.setHeader("Vary", "Accept-Encoding");
    return new GZIPOutputStream(response.getOutputStream());
}

From source file:com.lily.dap.web.util.WebUtils.java

/**
 * Gzip HeaderGZIPOutputStream.//from w  w  w  .  j a v a2s .  c om
 */
public static OutputStream buildGzipOutputStream(HttpServletResponse response) throws IOException {
    response.setHeader("Content-Encoding", "gzip");
    return new GZIPOutputStream(response.getOutputStream());
}

From source file:com.dosport.system.utils.ServletUtils.java

/**
 * Etag Header.// w w w  .j  a va 2s  .c om
 */
public static void setEtag(HttpServletResponse response, String etag) {
    response.setHeader("ETag", etag);
}

From source file:net.sf.ehcache.constructs.web.ResponseUtil.java

/**
 * Adds the gzip HTTP header to the response. This is need when a gzipped body is returned so that browsers can properly decompress it.
 * <p/>//from  w  w w  .  j  a v a  2s.com
 * @param response the response which will have a header added to it. I.e this method changes its parameter
 * @throws ResponseHeadersNotModifiableException Either the response is committed or we were called using the include method
 * from a {@link javax.servlet.RequestDispatcher#include(javax.servlet.ServletRequest, javax.servlet.ServletResponse)}
 * method and the set set header is ignored.
 */
public static void addGzipHeader(final HttpServletResponse response)
        throws ResponseHeadersNotModifiableException {
    response.setHeader("Content-Encoding", "gzip");
    boolean containsEncoding = response.containsHeader("Content-Encoding");
    if (!containsEncoding) {
        throw new ResponseHeadersNotModifiableException(
                "Failure when attempting to set " + "Content-Encoding: gzip");
    }
}

From source file:com.handpay.ibenefit.framework.util.WebUtils.java

public static void setEtag(HttpServletResponse response, String etag) {
    response.setHeader("ETag", etag);
}

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   ww  w . j a v a  2  s  .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.handpay.ibenefit.framework.util.WebUtils.java

public static void setDownloadableHeader(HttpServletResponse response, String fileName) {
    response.setHeader("Content-Disposition", "attachment; filename=\"" + fileName + "\"");
}

From source file:gov.nih.nci.caintegrator.application.util.CSVUtil.java

public static void renderCSV(HttpServletResponse response, List<List> csv) {
    PrintWriter out = null;/*from  ww w .  j av a2  s . com*/

    long randomness = System.currentTimeMillis();
    response.setContentType("application/csv");
    response.setHeader("Content-Disposition", "attachment; filename=report_" + randomness + ".csv");

    try {
        for (List row : csv) {

            out = response.getWriter();
            out.write(StringUtils.join(row.toArray(), ",") + "\r\n");
            out.flush();
        }
    } catch (Exception e) {
        out.write("error generating report");
    }
}

From source file:com.manydesigns.elements.servlet.ServletUtils.java

/**
 * Marks the resource returned to a web client to be stored in cache for a very long time.
 * The resource is marked to be cached privately, i.e. on the client only, not in intermediate caches like proxies.
 * @param response the HTTP response whose headers are set.
 *//*from w  w  w . jav a  2  s .  com*/
public static void markCacheableForever(HttpServletResponse response) {
    long expiresAfterMillis = System.currentTimeMillis() + ONE_YEAR_MILLIS;
    response.setHeader(ServletConstants.HTTP_PRAGMA, "");
    response.setDateHeader(ServletConstants.HTTP_EXPIRES, expiresAfterMillis);
    //Private - only authorized users can cache the content
    response.setHeader(ServletConstants.HTTP_CACHE_CONTROL, ServletConstants.HTTP_CACHE_CONTROL_PRIVATE);
    response.addHeader(ServletConstants.HTTP_CACHE_CONTROL,
            ServletConstants.HTTP_CACHE_CONTROL_MAX_AGE + ONE_YEAR_MILLIS);
}