VIP会员
购物车
私信
发表新帖
立即签到
关注
回复
支持(
反对( 首页上一页 1 下一页尾页 3 条记录 1/1页
jsp项目开发全程实录 企业电子商城 问题
发表在JavaWeb图书答疑
2009-05-07
是否精华
是
否
版块置顶:
是
否
运行时出现如下错误，请帮忙解释下是什么原因？谢谢
HTTP Status 500 -
--------------------------------------------------------------------------------
type Exception report
message
description The server encountered an internal error () that prevented it from fulfilling this request.
exception
org.apache.jasper.JasperException: An exception occurred processing JSP page /index.jsp at line 6
3: <%@page import="java.util.*"%>
4: <%@page import="com.wy.domain.GoodsForm" %>
5: <jsp:useBean id="newGood" scope="page" class="com.wy.dao.GoodsDao"/>
6: <%List nowList =newGood.selectMark(Integer.valueOf("0"));%>
7: <%List freeList =newGood.selectMark(Integer.valueOf("1"));%>
8: <html>
9: <head>
Stacktrace:
org.apache.jasper.servlet.JspServletWrapper.handleJspException(JspServletWrapper.java:505)
org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:416)
org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:342)
org.apache.jasper.servlet.JspServlet.service(JspServlet.java:267)
javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
root cause
java.lang.NullPointerException
com.wy.dao.GoodsDao.selectMark(GoodsDao.java:52)
org.apache.jsp.index_jsp._jspService(index_jsp.java:70)
org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:70)
javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:374)
org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:342)
org.apache.jasper.servlet.JspServlet.service(JspServlet.java:267)
javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
note The full stack trace of the root cause is available in the Apache Tomcat/6.0.18 logs.
--------------------------------------------------------------------------------
Apache Tomcat/6.0.18
HTTP Status 500 -
--------------------------------------------------------------------------------
type Exception report
message
description The server encountered an internal error () that prevented it from fulfilling this request.
exception
org.apache.jasper.JasperException: An exception occurred processing JSP page /index.jsp at line 6
3: <%@page import="java.util.*"%>
4: <%@page import="com.wy.domain.GoodsForm" %>
5: <jsp:useBean id="newGood" scope="page" class="com.wy.dao.GoodsDao"/>
6: <%List nowList =newGood.selectMark(Integer.valueOf("0"));%>
7: <%List freeList =newGood.selectMark(Integer.valueOf("1"));%>
8: <html>
9: <head>
Stacktrace:
org.apache.jasper.servlet.JspServletWrapper.handleJspException(JspServletWrapper.java:505)
org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:416)
org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:342)
org.apache.jasper.servlet.JspServlet.service(JspServlet.java:267)
javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
root cause
java.lang.NullPointerException
com.wy.dao.GoodsDao.selectMark(GoodsDao.java:52)
org.apache.jsp.index_jsp._jspService(index_jsp.java:70)
org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:70)
javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:374)
org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:342)
org.apache.jasper.servlet.JspServlet.service(JspServlet.java:267)
javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
note The full stack trace of the root cause is available in the Apache Tomcat/6.0.18 logs.
--------------------------------------------------------------------------------
Apache Tomcat/6.0.18
分享到：
