com.atlassian.jira.web.servlet
Class HttpResponseHeaders

java.lang.Object
  extended by com.atlassian.jira.web.servlet.HttpResponseHeaders

public class HttpResponseHeaders
extends Object

Utility methods for setting headers on the HTTP response.

Since:
v5.0

Method Summary
static void cachePrivatelyForAboutOneYear(javax.servlet.http.HttpServletResponse response)
          Sets the Cache-control and Expires headers to allow browsers, but not proxies, to cache the response for up to approximately 1 year.
static void cachePubliclyForAboutOneYear(javax.servlet.http.HttpServletResponse response)
          Sets the Cache-control and Expires headers to allow browsers and proxies to cache the response for up to approximately 1 year.
 
Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
 

Method Detail

cachePrivatelyForAboutOneYear

public static void cachePrivatelyForAboutOneYear(javax.servlet.http.HttpServletResponse response)
Sets the Cache-control and Expires headers to allow browsers, but not proxies, to cache the response for up to approximately 1 year. This kind of caching is appropriate for non-public content such as avatars, attachments, thumbnails, etc. More specifically, this sets the following headers:

   Cache-control: 
   Expires: Wed, 31 Dec 1969 23:59:59 GMT
 

The Expires header is set to a date in the past to prevent HTTP 1.0 proxies from caching what is non publicly-accessible content. Since the Cache-control header takes precendence over the Expires header, HTTP 1.1-capable proxies will still cache the data privately.

If the response already has a Cache-control header, it will be overwritten.

Parameters:
response - the HttpServletResponse on which we will set the header
Since:
v5.0

cachePubliclyForAboutOneYear

public static void cachePubliclyForAboutOneYear(javax.servlet.http.HttpServletResponse response)
Sets the Cache-control and Expires headers to allow browsers and proxies to cache the response for up to approximately 1 year. This kind of caching is appropriate for public content such as icons, sprites, etc.

   Cache-control: 
   Expires: "now" + 1 year
 

If the response already has a Cache-control header, it will be overwritten.

Parameters:
response - the HttpServletResponse on which we will set the header
Since:
v5.0


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