这段代码有何不妥这之处？？？？？？关于数据库记录集

这是weblogic下的提示信息：
<2002-4-30 下午04时30分06秒> <Error> <HTTP> <[WebAppServletContext(1472659,DefaultWebApp,/DefaultWebApp)] Servlet failed with Exception                         java.lang.NullPointerException                                                          at jsp_servlet._ccjb.__index._jspService(__index.java:106)                      at weblogic.servlet.jsp.JspBase.service(JspBase.java:27)                        at weblogic.servlet.internal.ServletStubImpl.invokeServlet(ServletStubImpl.java:265)                                                                            at weblogic.servlet.internal.ServletStubImpl.invokeServlet(ServletStubImpl.java:200)                                                                            at weblogic.servlet.internal.WebAppServletContext.invokeServlet(WebAppServletContext.java:2456)                                                                 at weblogic.servlet.internal.ServletRequestImpl.execute(ServletRequestImpl.java:2039)                                                                           at weblogic.kernel.ExecuteThread.execute(ExecuteThread.java:139)                at weblogic.kernel.ExecuteThread.run(ExecuteThread.java:120)            > 这是ie提示信息
Error 500--Internal Server Error 
From RFC 2068 Hypertext Transfer Protocol -- HTTP/1.1:
10.5.1 500 Internal Server Error
The server encountered an unexpected condition which prevented it from fulfilling the request.