Hi If all else fails, try to add a timestamp variable to the link. By dynamically adding a unique timestamp like http://foo.com/document.jsp?time=[timestamp] the page will not be cached.
Regards Roland Rabben > -----Original Message----- > From: Paul Hamer [mailto:[EMAIL PROTECTED] > Sent: 1. oktober 2006 16:16 > To: 'Tomcat Users List' > Subject: RE: HOWTO disable Tomcat from caching dynamic picture > > Hey John, > > Tomcat does not do any caching. Try adding these HTTP headers: > > response.addHeader("Pragma","no-cache"); // HTTP/1.0 > response.addHeader("Cache-control","no-cache, no-store"); // HTTP/1.1 > > That's the official way. However, due to an IE4-IE6 bug, you might want to > replace the second one by: > > response.setHeader("Cache-control","max-age=0"); // HTTP/1.1 > > More info see: > http://forum.java.sun.com/thread.jspa?threadID=233446&start=0 > > Worked fine for me! > > Regards, > Paul Hamer > > management & development > [EMAIL PROTECTED] > > toHAVE websolutions > www.tohave.nl > [EMAIL PROTECTED] > > > -----Original Message----- > > From: John Mok [mailto:[EMAIL PROTECTED] > > Sent: Sunday, 01 October 2006 02:46 > > To: users@tomcat.apache.org > > Subject: HOWTO disable Tomcat from caching dynamic picture > > > > Hi, > > > > I am using Tomcat 5.5.17 with Sun JDK 5.0 Update 7 on CentOS > > 4.3. I have > > a servlet, namely BMPImageViewer, which retrieves a BMP image from > > database with conversion into PNG format via JAI. The servlet is > > referenced in XSL-FO for PDF generation. > > > > My problem was that the image did not change even the image > > in database > > updated. I checked that the servlet BMPImageViewer worked > > correctly and > > loaded the correct image every time. The servlet outputs the > > image with > > header set to "no-cache" :- > > > > response.setHeader("Pragma", "no-cache"); > > response.setHeader("Expires", -1); > > > > How to force Tomcat not to cache the dynamic image? and load > > a new one > > every time? I hope someone could help me out and advise how > > to configure > > Tomcat not to cache dynamic image. > > > > Thanks a lot. > > > > John Mok > > > > --------------------------------------------------------------------- > > To start a new topic, e-mail: users@tomcat.apache.org > > To unsubscribe, e-mail: [EMAIL PROTECTED] > > For additional commands, e-mail: [EMAIL PROTECTED] > > > > > --------------------------------------------------------------------- > To start a new topic, e-mail: users@tomcat.apache.org > To unsubscribe, e-mail: [EMAIL PROTECTED] > For additional commands, e-mail: [EMAIL PROTECTED] --------------------------------------------------------------------- To start a new topic, e-mail: users@tomcat.apache.org To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
