求助大佬

讲讲

运行的在线考试系统报这个错误咋回事啊 myeclipse不报错啊

" d9 j9 k* n3 c- TServlet.service() for servlet [jsp] in context with path [/exam] threw exception [An exception occurred processing JSP page /index.jsp at line 26

) @' n; L, ]& N" w, r! Q1 \23:   </tr>
! d1 \+ W' p  T' ?4 P24: </table>
25: <table width="778" height="158"  border="0" align="center" cellpadding="0" cellspacing="0" background="Images/login_mid.jpg">
26: <html:form action="manage/student.do?action=login" method="post" focus="ID">
27:           <tr>
6 W. Y7 c, ]- `  l28:             <td>
$ o9 ?" {  N/ D7 D* n29:                                   
) o/ i' J8 g9 ^& R$ F
6 e; e' Z4 G5 k0 W# f+ }1 @
9 f$ T  d! ~; z1 V) j' vStacktrace:] with root cause
javax.servlet.jsp.JspException: Exception creating bean of class com.wgh.actionForm.StudentForm: {1}
. [$ F) T8 q& c3 X- F* D) b& P        at org.apache.struts.taglib.html.FormTag.initFormBean(FormTag.java:487)
$ o8 V' |5 R1 L" p# D& n1 f- B        at org.apache.struts.taglib.html.FormTag.doStartTag(FormTag.java:457)
2 T* e8 m2 s3 e6 T        at org.apache.jsp.index_jsp._jspx_meth_html_005fform_005f0(index_jsp.java:157)
        at org.apache.jsp.index_jsp._jspService(index_jsp.java:114)
9 d; n: U* C" M1 T* a        at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:70)
% M( T! G3 X! V3 [# s        at javax.servlet.http.HttpServlet.service(HttpServlet.java:728)
        at org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:432)
        at org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:390)
        at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:334)
3 r* U5 U& I2 ?        at javax.servlet.http.HttpServlet.service(HttpServlet.java:728)
7 ?* g) P! x9 M        at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:305)
        at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)
        at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:51)
% M- f! ?( A% n" p' N8 A$ l        at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:243)
5 u6 `" L  {" `1 C5 O) Z; n9 u  s        at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)
        at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:222)
        at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:123)
7 l" }( p* m% J, g9 z        at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:502)

% U3 h0 y. I1 ~6 @7 a

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