JSP分页查询实例代码 <%request.setCharacterEncoding("GBK");%>
<%@ page contentType="text/html; charset=gb2312" %>
<%@ page import="java.sql.*"%>
<%@ page import="java.util.*"%>
<%@ page import="java.lang.*"%>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN" >
<HTML>
<HEAD>
<title>分页显示例子</title>
<META http-equiv="Content-Type" content="text/html; charset=gb2312">
</HEAD>
[removed]
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;
}
[removed]
[removed]
function submit10() {
self.location.replace("fenye.jsp")
}
[removed]
<%
//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 = 10;
//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("com.microsoft.jdbc.sqlserver.SQLServerDriver");
//设置数据库连接字符串
strCon = "jdbc:sqlserver://127.0.0.1;databaseName=Northwind";
//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.ResultSet.CONCUR_READ_ONLY);//准备SQL语句
strSQL = "select * from Orders";
//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;
%>
<body>
<form method="POST" action="">
第<%=intPage%>页 共<%=intPageCount%>页
<%
if (intPage < intPageCount) {
%>
<a href="fenye.jsp?page=<%=intPage + 1%>">下一页</a>
<%
}
%>
<%
if (intPage > 1) {
%>
<a href="fenye.jsp?page=<%=intPage - 1%>">上一页</a>
<%
}
%>
转到第:<input type="text" name="page" size="8"> 页 <input
type="submit" value="GO" name="cndok">
</form>
<table border="1" cellspacing="0" cellpadding="0">
<%
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 CustomerID, EmployeeID;
while (i < intPageSize && !sqlRst.isAfterLast()) {
CustomerID = sqlRst.getString(1);
EmployeeID = sqlRst.getString(2);
%>
<tr>
<td><%=CustomerID%></td>
<td><%=EmployeeID%></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();
%>
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43KB
2012-05-22
14
