tomcat http 500问题

问题描述

各位兄弟，小弟初学jsp，请帮帮忙看看哪里出错了，该怎么处理，谢谢！从主页面登陆后显示错误信息：typeExceptionreportmessagedescriptionTheserverencounteredaninternalerror()thatpreventeditfromfulfillingthisrequest.exceptionjavax.servlet.ServletExceptionorg.apache.struts.action.RequestProcessor.processException(RequestProcessor.java:545)org.apache.struts.action.RequestProcessor.processActionPerform(RequestProcessor.java:486)org.apache.struts.action.RequestProcessor.process(RequestProcessor.java:274)org.apache.struts.action.ActionServlet.process(ActionServlet.java:1482)org.apache.struts.action.ActionServlet.doGet(ActionServlet.java:507)javax.servlet.http.HttpServlet.service(HttpServlet.java:627)javax.servlet.http.HttpServlet.service(HttpServlet.java:729)org.mmxbb.exam.util.SetCharacterEncodingFilter.doFilter(SetCharacterEncodingFilter.java:56)rootcausejava.lang.NullPointerExceptionorg.mmxbb.exam.dao.ExamineeDAO.isAdminUser(ExamineeDAO.java:716)org.mmxbb.exam.business.AdminLogonAction.execute(AdminLogonAction.java:20)org.apache.struts.action.RequestProcessor.processActionPerform(RequestProcessor.java:484)org.apache.struts.action.RequestProcessor.process(RequestProcessor.java:274)org.apache.struts.action.ActionServlet.process(ActionServlet.java:1482)org.apache.struts.action.ActionServlet.doGet(ActionServlet.java:507)javax.servlet.http.HttpServlet.service(HttpServlet.java:627)javax.servlet.http.HttpServlet.service(HttpServlet.java:729)org.mmxbb.exam.util.SetCharacterEncodingFilter.doFilter(SetCharacterEncodingFilter.java:56)noteThefullstacktraceoftherootcauseisavailableintheApacheTomcat/5.5.28logs.

解决方案

解决方案二：
java.lang.NullPointerExceptionorg.mmxbb.exam.dao.ExamineeDAO.isAdminUser(ExamineeDAO.java:716)从这儿可以看出是ExamineeDAO类的isAdminUser方法716行出现空指针错误
解决方案三：
就是你的程序有问题了呗

时间： 2025-01-20 20:11:35

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