页面头一次显示正常,但一刷新就出错org.apache.jasper.JasperException
页面头一次显示正常,但一刷新就出错org.apache.jasper.JasperException
页面代码如下:
<%@ page contentType="text/html;charset=gb2312"%>
<%@ page errorPage="bookstoreErr.jsp" import="java.sql.*,java.io.*,java.text.*,java.util.*,mybeans.bookstore.*"%>
<jsp:useBean id="connPool" scope="application" class="mybeans.bookstore.ConnPool">
<jsp:setProperty name="connPool" property="driverName" value="com.microsoft.jdbc.sqlserver.SQLServerDriver"/>
<jsp:setProperty name="connPool" property="jdbcURL" value="jdbc:microsoft:sqlserver://localhost:1433;DatabaseName=bookstore"/>
<jsp:setProperty name="connPool" property="username" value="sa"/>
<jsp:setProperty name="connPool" property="password" value="1108"/>
<jsp:setProperty name="connPool" property="connectionSwitch" value="on"/>
</jsp:useBean>
<jsp:useBean id="sqlbridge" scope="page" class="mybeans.bookstore.SqlBridge">
<jsp:setProperty name="sqlbridge" property="connPool" value="<%=connPool%>"/>
<jsp:setProperty name="sqlbridge" property="connectionSwitch" value="on"/>
</jsp:useBean>
<script language="javascript">
<!--
function indexFormSubmit(url)
{
document.indexForm.action=url;
document.indexForm.submit();
}
//-->
</script>
<html>
<head>
<title>网上图书定购系统</title>
<meta http-equiv="Content-Type" content="text/html; charset=gb2312">
</head>
<body bgcolor="#FFFFFF" text="#000000">
<div align="center">
<p> </p>
<p> </p>
<p> </p>
<p><font size="+2" color="#990000">欢迎使用网上图书订购系统</font></p>
<form name="indexForm" method="post" action="bookorder.jsp">
<table width="75%" border="0">
<tr align="center" bgcolor="004d99">
<td colspan="4"><font color="#FFFFFF">帐号</font>
<input type="text" name="id" size="10" maxlength="8">
<font color="#FFFFFF">密码</font>
<input type="text" name="password" maxlength="8" size="10">
<input type="submit" name="Submit" value="确定">
</td>
</tr>
<tr align="center">
<td colspan="4"> </td>
</tr>
<tr>
<td width="40%" height="36"><a href="memberRegister.html">加入会员</a>(享受八折优惠)</td>
<td width="27%" height="36"><a href="javascript:indexFormSubmit('queryMemberData.jsp')">会员资料查询</a></td>
<td width="30%" height="36"><a href="javascript:indexFormSubmit('SystemAdmin.jsp')">系统维护</a></td>
<td width="3%" height="36"> </td>
</tr>
<tr>
<td colspan="4"> </td>
</tr>
</table>
</form>
<p> </p>
</div>
</body>
</html>