WebRoot/jiaoshi/jiaoshiupdate.jsp

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<%@ page contentType="text/html; charset=gb2312" language="java" import="java.sql.*" errorPage="" %>
<%@ page import="com.util.*"%>
<%
request.setCharacterEncoding("gb2312");//设置页面字符集
DBO db=new DBO();//数据库链接
String   yhm="",mm="",xm="",zc="",dh="",dz="",tswt="",tsda="";//初始化变量
String keyid=(String)request.getParameter("keyid");//主键
String sql="select * from jiaoshi where jsid="+keyid;//定义查询sql语句
ResultSet rs=null;//定义查询结果集
db.open();//打开数据库链接
rs=db.query(sql);//执行查询结果

/*
教师信息修改页面
*/
if(rs.next()){//遍历结果集查询 相应的变量
 yhm=rs.getString("yhm");
mm=rs.getString("mm");
xm=rs.getString("xm");
zc=rs.getString("zc");
dh=rs.getString("dh");
dz=rs.getString("dz");
tswt=rs.getString("tswt");
tsda=rs.getString("tsda");

}
%>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=gb2312" />
<script language="javascript" src="../js/prototype.js"></script>
<link href="../images/right.css" rel="stylesheet" type="text/css"/>
<script language="javascript">
function windowHeight() {
    var de = document.documentElement;
    return self.innerHeight||(de && de.clientHeight)||document.body.clientHeight;
}
window.onload=window.onresize=function(){
var wh=windowHeight();
document.getElementById("contentWrap").style.height = document.getElementById("sidebar").style.height = (wh-document.getElementById("header").offsetHeight-document.getElementById("footer").offsetHeight)+"px";
}
</script>
<script language="javascript">
function checkDo(){
if(form.yhm.value==""){
alert("用户名不能为空");
return false;
form.yhm.focus();
}

if(form.mm.value==""){
alert("密码不能为空");
return false;
form.mm.focus();
}

if(form.xm.value==""){
alert("姓名不能为空");
return false;