时好时坏的问题：javax.servlet.jsp.JspException

[LiuLinda999]

一个用Myeclipse 调式的应用，部署在Weblogic上面的时候，偶尔出错如下：
javax.servlet.jsp.JspException: Exception creating bean of class com.smic.mdi.spc.form.LogonForm: {1}
at org.apache.struts.taglib.html.FormTag.initFormBean(FormTag.java:487)
at org.apache.struts.taglib.html.FormTag.doStartTag(FormTag.java:457)
at jsp_servlet.__logon._jspService(__logon.java:445)
at weblogic.servlet.jsp.JspBase.service(JspBase.java:33)
at weblogic.servlet.internal.ServletStubImpl$ServletInvocationAction.run(ServletStubImpl.java:1072)
at weblogic.servlet.internal.ServletStubImpl.invokeServlet(ServletStubImpl.java:465)
at weblogic.servlet.internal.ServletStubImpl.invokeServlet(ServletStubImpl.java:526)
at weblogic.servlet.internal.ServletStubImpl.invokeServlet(ServletStubImpl.java:348)
at weblogic.servlet.internal.WebAppServletContext$ServletInvocationAction.run(WebAppServletContext.java:6985)
at weblogic.security.acl.internal.AuthenticatedSubject.doAs(AuthenticatedSubject.java:321)
at weblogic.security.service.SecurityManager.runAs(SecurityManager.java:121)
at weblogic.servlet.internal.WebAppServletContext.invokeServlet(WebAppServletContext.java:3892)
at weblogic.servlet.internal.ServletRequestImpl.execute(ServletRequestImpl.java:2766)
at weblogic.kernel.ExecuteThread.execute(ExecuteThread.java:224)
at weblogic.kernel.ExecuteThread.run(ExecuteThread.java:183)


怎么解决啊？

[LiuLinda999]

程序本身没问题，能用Weblogic 部署起来，能正常使用。
当在eclips3.2中导入该应用之后，再用Weblogic 能部署起来，但初始页面都不能访问，报错如上。