<c:url value="http://www.baidu.com" var="urlinfo">

<c:param name="author" value="liYanHong"/>

<c:param name="logo" value="baidu"/>

</c:url>

<a href="${urlinfo}">link</a>

//<a href="http://www.baidu.com/?author=liYanHong&logo=baidu">link</a>  也就是地址重写