关于QQWry.Dat在struts中的使用问题

我使用从网上找到关于JAVA使用QQWry.Dat查询IP的例子,想把它集成到JSP中,但在APPLICATION好用,可在JSP就出错呀!
java.lang.NoClassDefFoundError
com.wangba.ip.Test.IP(Test.java:10)
org.apache.jsp.index_jsp._jspService(index_jsp.java:53)
org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:94)
javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:324)
org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:292)
org.apache.jasper.servlet.JspServlet.service(JspServlet.java:236)
javax.servlet.http.HttpServlet.service(HttpServlet.java:802)

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