我用JSP调用javabean,刷新14次就刷出异常

dchilli 2007-07-17 07:40:52

我用JSP调用javabean. javabean是查询数据库然后将结果返回给jsp页面.但是只要我点击刷新按钮14次(每次都是14次)就会引发异常. 现在请教各位大侠了.
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type Exception report

message

description The server encountered an internal error () that prevented it from fulfilling this request.

exception

javax.servlet.ServletException: javax.servlet.jsp.JspException: null
org.apache.jasper.runtime.PageContextImpl.doHandlePageException(PageContextImpl.java:821)
org.apache.jasper.runtime.PageContextImpl.handlePageException(PageContextImpl.java:758)
org.apache.jsp.user.yen.index_jsp._jspService(index_jsp.java:168)
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)

root cause

java.lang.reflect.InvocationTargetException
sun.reflect.GeneratedMethodAccessor61.invoke(Unknown Source)
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
java.lang.reflect.Method.invoke(Method.java:597)
org.apache.taglibs.standard.tag.common.core.SetSupport.doEndTag(Unknown Source)
org.apache.jsp.user.yen.index_jsp._jspx_meth_c_set_0(index_jsp.java:217)
org.apache.jsp.user.yen.index_jsp._jspService(index_jsp.java:121)
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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