To include JSP files in your Wicket templates with much of the same flexibility as jsp:include, we will create a custom Wicket component that will take care of thisThis version allows you to use custom tag <wicket:jsp file="/foo.jsp"/> as a wicket container, and you can add some attributes to the request before JSP file is processed.
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public class WicketJspResolver implements IComponentResolver {
private static final long serialVersionUID = 1L;
private static final Logger log = LoggerFactory.getLogger(WicketJspResolver.class);
static {
// Register the jsp tag within the wicket tag namespace
WicketTagIdentifier.registerWellKnownTagName("jsp");
}
public boolean resolve(final MarkupContainer container, final MarkupStream markupStream, final ComponentTag tag) {
if (tag instanceof WicketTag) {
WicketTag wtag = (WicketTag)tag;
if ("jsp".equalsIgnoreCase(wtag.getName())) {
String file = wtag.getAttributes().getString("file");
if (file == null || file.trim().length() == 0) {
throw new MarkupException("Wrong format of <wicket:jsp file='foo.jsp'>: attribute 'file' is missing");
}
// Add the jsp component to the component hierarchy
container.autoAdd(new JspFileContainer(file), markupStream);
// We did process the tag
return true;
}
}
// We did not process the tag
return false;
}
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