WebRoot/rzlb/rzlbupdate.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   lb="";//初始化变量
String keyid=(String)request.getParameter("keyid");//主键
String sql="select * from rzlb where rzlbid="+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

/*
日志类别信息修改页面
*/
if(rs.next()){//遍历结果集查询 相应的变量
 lb=rs.getString("lb");

}
%>
<!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.lb.value==""){
alert("类别不能为空");
return false;
form.lb.focus();
}


form.action="rzlb_update.jsp";
form.submit();
}
</script>

</head>
<body>

<div id="sidebar" class="right">
	  <div class="column">
	    <span>日志类别信息管理</span>
	  </div>
	  <div class="content">
<div class="ts"><b>修改日志类别信息：</b></div>
<form name="form" action="" method="post" >