[Optional] Class: org.zkoss.zk.ui.http.DHtmlLayoutFilter

DHtmlLayoutFilter is a filter to post-process the output generated by other servlets, such as JSP pages. Its role is similar to the ZK Loader. Unlike the ZK Loader, which loads static ZUML pages from Web applications directly, the ZK filter is designed to process dynamic pages generated by other servlets, say JSP or JSF. It enables developers to add rich user interfaces to existent servlets written in any technology.

Note: the output must be in XHTML (or ZUML) syntax. If you encounter any problem, you can save the generated output into a ZHTML page and then browse the URL whether the ZHTML page is stored.