JFreeChart问题:JFreeChart不能在JBoss下使用?

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我用JFreeChart制作统计图,在Tomcat下测试通过,一样的代码,放到JBoss下就出错,难道JBoss不支持JFreeChart?环境:win2k + jdk1.5 + jbuilder2006 + jboss4.0,提示错误:

HTTP Status 500 -
--------------------------------------------------------------------------------
type Exception report
message
description The server encountered an internal error () that prevented it from fulfilling this request.

exception

javax.servlet.ServletException: org/jfree/chart/ChartUtilities
org.apache.jasper.runtime.PageContextImpl.doHandlePageException(PageContextImpl.java:825)
org.apache.jasper.runtime.PageContextImpl.handlePageException(PageContextImpl.java:758)
org.apache.jsp.testChart_jsp._jspService(testChart_jsp.java:69)
org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:94)
javax.servlet.http.HttpServlet.service(HttpServlet.java:810)
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:810)
org.jboss.web.tomcat.filters.ReplyHeaderFilter.doFilter(ReplyHeaderFilter.java:75)

root cause

java.lang.NoClassDefFoundError: org/jfree/chart/ChartUtilities
org.jfree.chart.servlet.ServletUtilities.saveChartAsPNG(ServletUtilities.java:187)
cn.com.iaspec.sz119.stat.chart.ChartPie3D.draw(ChartPie3D.java:52)
org.apache.jsp.testChart_jsp._jspService(testChart_jsp.java:52)
org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:94)
javax.servlet.http.HttpServlet.service(HttpServlet.java:810)
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:810)
org.jboss.web.tomcat.filters.ReplyHeaderFilter.doFilter(ReplyHeaderFilter.java:75)

note The full stack trace of the root cause is available in the Apache Tomcat/5.0.28 logs.
...全文

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