[转]jsp分页显示
<％@ page contentType="text/html;charset=gb2312" ％>
<％@ page language="java" import="java.sql.*" ％>
<script language="javascript">
function newwin(url) {
var
newwin=window.open(url,"newwin","toolbar=no,location=no,directories=no,status=no,
menubar=no,scrollbars=yes,resizable=yes,width=600,height=450");
newwin.focus();
return false;
}
</script>
<script LANGUAGE="javascript">
function submit10()
{
self.location.replace("fenye1.jsp")
}
</script>
<％//变量声明
java.sql.Connection sqlCon; //数据库连接对象
java.sql.Statement sqlStmt; //SQL语句对象
java.sql.ResultSet sqlRst; //结果集对象
java.lang.String strCon; //数据库连接字符串
java.lang.String strSQL; //SQL语句
int intPageSize; //一页显示的记录数
int intRowCount; //记录总数
int intPageCount; //总页数
int intPage; //待显示页码
java.lang.String strPage;
int i;
//设置一页显示的记录数
intPageSize = 4;
//取得待显示页码
strPage = request.getParameter("page");
if(strPage==null){//表明在QueryString中没有page这一个参数，此时显示第一页数据
intPage = 1;
}
else{//将字符串转换成整型
intPage = java.lang.Integer.parseInt(strPage);
if(intPage<1) intPage = 1;
}
//装载JDBC驱动程序
Class.forName("sun.jdbc.odbc.JdbcOdbcDriver");
//设置数据库连接字符串
strCon = "jdbc:odbc:heyang";
//连接数据库
sqlCon = java.sql.DriverManager.getConnection(strCon,"sa","");
//创建一个可以滚动的只读的SQL语句对象
sqlStmt =
sqlCon.createStatement(java.sql.ResultSet.TYPE_SCROLL_INSENSITIVE,java.sql.Result
Set.CONCUR_READ_ONLY);//准备SQL语句
strSQL = "select user_id,user_name from userinfo order by user_id desc";
//执行SQL语句并获取结果集
sqlRst = sqlStmt.executeQuery(strSQL);
//获取记录总数
sqlRst.last();//??光标在最后一行
intRowCount = sqlRst.getRow();//获得当前行号
//记算总页数
intPageCount = (intRowCount+intPageSize-1) / intPageSize;
//调整待显示的页码
if(intPage>intPageCount) intPage = intPageCount;
％>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=gb2312">
<title>会员管理</title>
</head>
<body>
<form method="POST" action="fenye1.jsp">
第<％=intPage％>页 共<％=intPageCount％>页
<％if(intPage<intPageCount){％><a
href="fenye1.jsp?page=<％=intPage+1％>">下一页
</a><％}％> <％if(intPage>1){％><a href="fenye1.jsp?page=<％=intPage-1％>">
上一页</a><％}％>
转到第:<input type="text" name="page" size="8"> 页
<span><input class=buttonface type=′submit′ value=′GO′ name=′cndok′></span>
</form>
<table border="1" cellspacing="0" cellpadding="0">
<tr>
<th>ID</th>
<th>用户名</th>
<th width=′8％′>删除</th>
</tr>
<％
if(intPageCount>0){
//将记录指针定位到待显示页的第一条记录上
sqlRst.absolute((intPage-1) * intPageSize + 1);
//显示数据
i = 0;
String user_id,user_name;
while(i<intPageSize && !sqlRst.isAfterLast()){
user_id=sqlRst.getString(1);
user_name=sqlRst.getString(2);
％>
<tr>
<td><％=user_id％></td>
<td><％=user_name％></td>
<td width=′8％′ align=′center′><a href="delete.jsp?user_id=<％=user_id％>"
onClick="return newwin(this.href);">删除</a></td>
</tr>
<％
sqlRst.next();
i++;
}
}
％>
</table>
</body>
</html>
<％
//关闭结果集
sqlRst.close();
//关闭SQL语句对象
sqlStmt.close();
//关闭数据库
sqlCon.close();
％>