jsp异常
请高手指教!
jsp老是异常
jsp如下:
<%@ page contentType="text/html; charset=gbk" language="java"%>
<%@ page import="java.sql.*"%>
<%@ page import="java.io.*"%>
<%@ page import="java.util.*"%>
<%@ page import="javabean.*"%>
<%!//每页显示的记录数
int pageSize = 8;
int showPage = 1;
%>
<%
request.setCharacterEncoding("gbk");
String yuanxi = session.getAttribute("yuanxi").toString();
String nianji = session.getAttribute("nianji").toString();
String zhuanye = session.getAttribute("zhuanye").toString();
String xuenian = session.getAttribute("xuenian").toString();
String xueqi = session.getAttribute("xueqi").toString();
String kecheng = session.getAttribute("kecheng").toString();
Object ob = session.getAttribute("teacher");
String teacher = ob.toString();
String strPage = null;
String hang1 = request.getParameter("hangshu");
if (hang1 != null) {
// byte[] b = hang1.getBytes("iso-8859-1");
// hang1 = new String(b);
int hang = Integer.parseInt(hang1);
System.out.println(hang);
if (hang > 0) {
System.out.println(hang + "yyh");
%>
<jsp:useBean id="selectCourse" scope="session" class="javabean.SeleCourse"/>
<%
int[] cundefen = new int[hang];
String[] cundehao = new String[hang];
for (int i = 0; i < hang; i++) {
String ss = request.getParameter("fen" + i);
System.out.print(ss);
cundefen[i] = Integer.parseInt(ss);
cundehao[i] = request.getParameter("hao" + i);
}
selectCourse.setGrade(cundefen);
selectCourse.setCnumber(cundehao);
int[] j = selectCourse.UpdataGrade(kecheng, xueqi, xuenian);
System.out.println(j[0] + "aaa");
}
}
strPage = request.getParameter("showPage");
if (strPage == null) {
showPage = 1;
} else {
try {
showPage = Integer.parseInt(strPage);
} catch (
NumberFormatException e) {
showPage = 1;
}
if (showPage < 1) {
showPage = 1;
}
}%>
<jsp:useBean id="pages" scope="page" class="javabean.splitPage" />
<%
pages.initialize(kecheng, xueqi, xuenian, zhuanye, yuanxi, teacher, pageSize, showPage);
ResultSet rs = pages.getPage();
rs.last();
int xianshi = rs.getRow();
rs.beforeFirst();
%>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=gbk">
<title>分页显示</title>
</head>
<body bgcolor="#FFFFFF" text="#000000">
<div align=center>
<form action="chulichengji.jsp" method="post" target="_s