JSP 小问题,请大家帮忙 解决下.急!!!!谢谢

Question

此回复为自动发出,仅用于显示而已，并无任何其他特殊作用
楼主【digou】截止到2008-07-23 12:48:52的历史汇总数据(不包括此帖)：
发帖的总数量:0                        发帖的总分数:0                        每贴平均分数:0                        
回帖的总数量:0                        得分贴总数量:0                        回帖的得分率:0%                       
结贴的总数量:0                        结贴的总分数:0                        
无满意结贴数:0                        无满意结贴分:0                        
未结的帖子数:0                        未结的总分数:0                        
结贴的百分比:---------------------结分的百分比:---------------------
无满意结贴率:---------------------无满意结分率:---------------------
如何结贴请参考这里：http://topic.csdn.net/u/20080501/09/ef7ba1b3-6466-49f6-9d92-36fe6d471dd1.html

Answer 1

HTTP Status 500 - --------------------------------------------------------------------------------type Exception reportmessage description The server encountered an internal error () that prevented it from fulfilling this request.exception javax.servlet.ServletException
org.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:690)
javax.servlet.http.HttpServlet.service(HttpServlet.java:803)
filters.SetCharacterEncodingFilter.doFilter(SetCharacterEncodingFilter.java:53)
root cause java.lang.NullPointerException
com.dao.DBTools.executeQuery(DBTools.java:41)
com.bean.UsersBean.selectName(UsersBean.java:13)
com.yourcompany.struts.action.UserSelectAction.execute(UserSelectAction.java:54)
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:690)
javax.servlet.http.HttpServlet.service(HttpServlet.java:803)
filters.SetCharacterEncodingFilter.doFilter(SetCharacterEncodingFilter.java:53)
note The full stack trace of the root cause is available in the Apache Tomcat/5.5.26 logs.
--------------------------------------------------------------------------------Apache Tomcat/5.5.26

Answer 2

jsp 页面 运行的很好, 只是 一设计到  数据库 ,  就不行了.你可以 根据  下面的网制 测试: 测试 网址:  http://www.nskweb.cn/userLonIn.jsp  不加 端口: 报 404 错误. 
          http://www.nskweb.cn:8080/userLonIn.jsp  报错 不一样.
     用户名和密码 都是  123

Answer 3

我把  FTP  给你 ,你能帮我测试下吗