Sun Java System Application Server Platform Edition 9 Upgrade and Migration Guide

Implicit URL Rewriting

Application Server 6.x supported implicit URL rewriting, in which the web connector plug-in parsed the HTML stream being sent to the browser and appended session IDs to attributes such as href= and frame=. In Application Server 7.x/ 8.x and Application Server 9, this feature is not available. You need to review your applications and use encodeURL and encodeRedirectURL on every URL that the applications present to clients (such as mobile phones) that do not support cookies.