求助jfreechart

description The server encountered an internal error () that prevented it from fulfilling this request.exception javax.servlet.ServletException: org.jfree.data.time.TimeSeries.<init>(Ljava/lang/Comparable;Ljava/lang/Class;)V
org.apache.jasper.runtime.PageContextImpl.doHandlePageException(PageContextImpl.java:825)
org.apache.jasper.runtime.PageContextImpl.handlePageException(PageContextImpl.java:758)
org.apache.jsp.glpt.EC.Greatb_jsp._jspService(Greatb_jsp.java:89)
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:321)
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)
com.huawei.insa2.filter.EncodingFilter.doFilter(EncodingFilter.java:89)
root cause java.lang.NoSuchMethodError: org.jfree.data.time.TimeSeries.<init>(Ljava/lang/Comparable;Ljava/lang/Class;)V
com.jixin.common.web.page.TimeChartDemo.getDataSet(TimeChartDemo.java:100)
com.jixin.common.web.page.TimeChartDemo.Sctjb(TimeChartDemo.java:38)
org.apache.jsp.glpt.EC.Greatb_jsp._jspService(Greatb_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:321)
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)
com.huawei.insa2.filter.EncodingFilter.doFilter(EncodingFilter.java:89)
note The full stack trace of the root cause is available in the Apache Tomcat/5.0.28 logs.