善良的各位?这是哪门子有关问题?小虾米在这谢过了
日期：2014-05-18 浏览次数：20843 次
善良的各位?????????这是哪门子问题????????小虾米在这谢过了
各位prawn: JSP页面调试出现难题:
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
org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:372)
org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:292)
org.apache.jasper.servlet.JspServlet.service(JspServlet.java:236)
javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
root cause
java.lang.NullPointerException
org.apache.jsp.reg2_jsp._jspService(reg2_jsp.java:79)
org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:94)
javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:324)
org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:292)
org.apache.jasper.servlet.JspServlet.service(JspServlet.java:236)
javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
note The full stack trace of the root cause is available in the Apache Tomcat/5.0.28 logs.
JSP原文如下:----------------------------------
<%@ page contentType= "text/html; charset=gb2312 " language= "java " import= "java.sql.* " errorPage= " " %>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN " "http://www.w3.org/TR/html4/loose.dtd ">
<script language= "javascript ">
function backward()
{
history.back();
}
</script>
<html>
<head>
<meta http-equiv= "Content-Type " content= "text/html; charset=gb2312 ">
<title> please check the following form </title>
</head>
<style type= "text/css ">
<!--@import url(css/jsp.css);-->
</style>
<body bgcolor= "#FFFFFF " text= "#006699 ">
<%@ page language= "java " import= "java.sql.* "%>
<jsp:useBean id= "db " scope= "page " class= "opendb.opendb "/>
<%
String uid=request.getParameter( "uid ");
String sql= "select * from custom where uid= ' "+uid+ " ' ";
ResultSet rs = db.executeQuery(sql);
if(rs.next())
{
rs.close();
%>
<p> sorry! the ID your selected has been regestered ,please choose another &nb
各位prawn: JSP页面调试出现难题:
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
org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:372)
org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:292)
org.apache.jasper.servlet.JspServlet.service(JspServlet.java:236)
javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
root cause
java.lang.NullPointerException
org.apache.jsp.reg2_jsp._jspService(reg2_jsp.java:79)
org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:94)
javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:324)
org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:292)
org.apache.jasper.servlet.JspServlet.service(JspServlet.java:236)
javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
note The full stack trace of the root cause is available in the Apache Tomcat/5.0.28 logs.
JSP原文如下:----------------------------------
<%@ page contentType= "text/html; charset=gb2312 " language= "java " import= "java.sql.* " errorPage= " " %>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN " "http://www.w3.org/TR/html4/loose.dtd ">
<script language= "javascript ">
function backward()
{
history.back();
}
</script>
<html>
<head>
<meta http-equiv= "Content-Type " content= "text/html; charset=gb2312 ">
<title> please check the following form </title>
</head>
<style type= "text/css ">
<!--@import url(css/jsp.css);-->
</style>
<body bgcolor= "#FFFFFF " text= "#006699 ">
<%@ page language= "java " import= "java.sql.* "%>
<jsp:useBean id= "db " scope= "page " class= "opendb.opendb "/>
<%
String uid=request.getParameter( "uid ");
String sql= "select * from custom where uid= ' "+uid+ " ' ";
ResultSet rs = db.executeQuery(sql);
if(rs.next())
{
rs.close();
%>
<p> sorry! the ID your selected has been regestered ,please choose another &nb
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