谁能解决这个问题？

15:02:06,698 ERROR [[jsp]] Servlet.service() for servlet jsp threw exception
java.lang.LinkageError: loader (instance of  org/apache/jasper/servlet/JasperLoader): attempted  duplicate class definition for name: "org/apache/jsp/tag/web/divBox_tag"

[geronimo 2.1，struts 1.2]