jsp分页技术（1）
package com.sp.model;
import java.sql.*;
import java.util.*;
public class UserbeanCl {

//业务逻辑 
private Connection ct=null;
private PreparedStatement ps=null;
private ResultSet rs=null;
private int pageCount=0;//共有几页(计算)


//分页显示

//修改用户
public  boolean update(String s1,String s2,String s3,String s4,String s5,String s6,String s7,String s8,String s9){
boolean b=false;

// private longuserId ;
//  private  String username ;
//  private  String truename ;
//  private  String passwd ;
//  private  String email ;
//  private  String phone ;
//  private  String address ;
//  private  String postcode ;
//  private int grade ;
//
try{
ConnDB  cd=new ConnDB();
ct=cd.getCon();
 ps=ct.prepareStatement("update  users set  username='"+s2+"'  , passwd='"+s3+"', email='"+s4+"', grade="+s5+"', truename="+s6+"', phone="+s7+"', address="+s8+"', postcode="+s9+" where userId='"+s1+"'");
int num= ps.executeUpdate();
if(num==1){
b=true;

}
 
}catch(Exception e){
e.printStackTrace();
}finally{
   
    this.close();
   }

return  b;

}
//增加用户信息,
//增加用户放在注册用户上
// public  boolean addUser(String s2,String s3,String s4,String s5){
// boolean b=false;
// try{
// ConnDB  cd=new ConnDB();
// ct=cd.getCon();
//  ps=ct.prepareStatement("insert into &n