The BitSmith created FOP-2342: --------------------------------- Summary: Make image from URL abide no-cache HTTP headers Key: FOP-2342 URL: https://issues.apache.org/jira/browse/FOP-2342 Project: Fop Issue Type: Improvement Components: images Affects Versions: 1.1 Environment: Tested on CentOS, Tomcat6 and FOP 1.1rc1 service Reporter: The BitSmith Priority: Minor
When I include an image, it is cached. So including a dynamic image shows only the first version of the image. To prevent this, I have to add a constantly changing parameter (called "nonce" here): <fo:external-graphic width="140mm" height="30mm" content-width="scale-down-to-fit" content-height="scale-down-to-fit" inline-progression-dimension.maximum="100%" scaling="uniform" vertical-align="-50%"> <xsl:variable name="orgguid" select="Organization/ID" /> <xsl:variable name="nonce" select="Nonce" /> <xsl:variable name="logo" select="concat('http://localhost/images/fopimages/logo.php?orgid=', $orgguid, '&dummy=', $nonce)"/> <xsl:attribute name="src">url(<xsl:value-of select="$logo"/>)</xsl:attribute> </fo:external-graphic> This happens despite the fact that the PHP script that produces the image sends "no-cache" headers (PHP code): header('Expires: Fri, 13 May 1983 18:30:00 GMT'); header('Last-Modified: ' . gmdate('D, d M Y H:i:s') . ' GMT'); header('Cache-Control: no-store, no-cache, must-revalidate'); // HTTP/1.1 header('Cache-Control: post-check=0, pre-check=0', FALSE); header('Pragma: no-cache'); // HTTP/1.0 header('Content-Type: ' . $this->mstrLogoType); header('Content-Length: ' . strlen($this->mmixLogoData)); header('Content-Disposition: inline'); header('X-Content-Type-Options: nosniff'); // Workaround for IE bug. echo $this->mmixLogoData; It would be nice if the image caching mechanism would abide these headers, so workarounds like extra parameters are not necessary. -- This message was sent by Atlassian JIRA (v6.1.5#6160)