What is equivalent in Struts2 for <html:rewrite> tag?
<html:rewrite page="/MyAction.action">
You can use url tag to build the url, this is equivalent of html rewrite tag.
<s:url var="myUrl" action="MyAction"/>
But if you need rewrite the url, then you can use a path
<s:url var="myUrl" value="/MyAction.action"/>
You can output the value with <s:property value="%{#myUrl}"/> or ${myUrl} in the JSP where possible.
You can read more about <s:url> tag on the Struts docs site.