求教:JSP+SQLSERVER的分页问题
JSP+SQLSERVER的分页问题
package bean;
import java.sql.*;
public class conn {
Connection con=null;
ResultSet rs=null;
public conn(){
try{
Class.forName("com.microsoft.jdbc.sqlserver.SQLServerDriver");
}
catch(
ClassNotFoundException e){
System.err.println(e.getMessage());
}
}
public ResultSet executeQuery(String sql){
try{
con=DriverManager.getConnection("jdbc:microsoft:sqlserver://localhost:1433;DatabaseName=andy","sa","");
Statement stmt=con.createStatement(ResultSet.TYPE_SCROLL_SENSITIVE,ResultSet.CONCUR_READ_ONLY);
rs=stmt.executeQuery(sql);
}
catch(
SQLException e){
System.err.println(e.getMessage());
}
return rs;
}
public int executeUpdate(String sql){
int result=0;
try{
con=DriverManager.getConnection("jdbc:microsoft:sqlserver://localhost:1433;DatabaseName=andy","sa","");
Statement stmt=con.createStatement(ResultSet.TYPE_SCROLL_INSENSITIVE,ResultSet.CONCUR_READ_ONLY);
result=stmt.executeUpdate(sql);
}
catch(SQLException ex){
System.out.println(ex.getMessage());
}
return result;
}
}
jsp文件:<%@ page contentType="text/html; charset=GBK" %>
<%@ page language="java" import="java.sql.*"%>
<%@ page import="java.lang.*"%>
<jsp:useBean id="connD" scope="page" class="bean.conn"/>
<%!
ResultSet rs=null;
ResultSet rsTmp=null;
String sql="";
int PageSize=6;
int Page=3;
int totalPage=1;
String str="";
public String ShowOnePage(ResultSet rs,int Page,int PageSize){
str="";
try{
rs.absolute((Page-1)*PageSize+1);
}
catch(SQLException e){
}
for(int iPage=1;iPage<=PageSize;iPage++){
str+=RsToGbook(rs);
try{
if(!rs.next()) break;
}
catch(Exception e){}
}
return str;
}
public String RsToGbook(ResultSet rs){
String tt="";
try{
tt+="<tr>";
tt+="<td>"+rs.getInt(1)+"</td>";
tt+="<td>"+rs.getString(2)+"</td>";
tt+="<td>"+rs.getString(3)+"</td>";
tt+="<td>"+rs.getInt(4)+"</td>";
tt+="</tr>";
}
catch(SQLException e){}
return tt;
}
%>
<%
sql="select * from Stu";
try{
rs=connD.executeQuery(sql);
}
catch(Exception e){
out.println("访问数据库出错");
}
%>
<html>
<head>
<title>分页浏览数据库技巧</title>
</head>
<body bgcolor="#FFFFFF">
<h2 align="center">JSP中的分页控制</h2>
<hr>
<center>