restaurant/com/bean/FriendLinkBean.java

package com.bean;

/**
 *
 * @author Administrator
 *
 */

import java.io.File;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.text.SimpleDateFormat;
import java.util.ArrayList;
import java.util.Calendar;
import java.util.List;

import com.util.Constant;
import com.util.DBO;

public class FriendLinkBean {

	private List list;
	private ResultSet rs;
	private String date=new SimpleDateFormat("yyyy-MM-dd HH:mm:ss").format(Calendar.getInstance().getTime());
	
	//友情链接分页
	private int EVERYPAGENUM = 2;
	private int count = -1;
	private int qq = 0;
	private String sql="select count(*) from friendlink where ifhide!='2'";
	private String sql2="select * from friendlink where ifhide!='2' order by ordervalue desc ";
    public void setEVERYPAGENUM(int EVERYPAGENUM){
    	this.EVERYPAGENUM=EVERYPAGENUM;
    }
    public int getMessageCount() { //得到信息总数
       DBO dbo=new DBO();
       dbo.open();
        try { 
            rs = dbo.executeQuery(sql);
            rs.next();
            count = rs.getInt(1);
            return count;
        } catch (SQLException ex) {
            ex.printStackTrace();
            return -1;
        } finally {
            dbo.close();
        }
    }
    public int getPageCount() { //得到共多少页（根据每页要显示几条信息）
        if (count % EVERYPAGENUM == 0) {
            return count / EVERYPAGENUM;
        } else {
            return count / EVERYPAGENUM + 1;
        }
    }
    public List getMessage(int page) { //得到每页要显示的信息
        DBO dbo=new DBO();
        dbo.open();
        List list = new ArrayList();
        try {
            rs = dbo.executeQuery(sql2);
            for (int i = 0; i < (page - 1) * EVERYPAGENUM; i++) {
                rs.next();
            }
            for (int t = 0; t < EVERYPAGENUM; t++) {
                if (rs.next()) {
                    qq++;
                    List list2=new ArrayList();
                    list2.add(rs.getInt(1));
    				list2.add(rs.getString(2));
    				list2.add(rs.getString(3));
    				list2.add(rs.getString(4));
    				list2.add(rs.getString(5));
    				list2.add(rs.getInt(6));
    				list2.add(rs.getInt(7));
    				list2.add(rs.getString(8));
    				list.add(list2);
                } else {
                    break; //减少空循环的时间
                }
            }
            return list;
        } catch (SQLException ex) {
            ex.printStackTrace();
            return list;
        } finally {
            dbo.close();
        }
    }
	
	public List getAllShowFriendLink(){
		String sql = "select linkname,linkurl,linkpic,intero from friendlink where ifhide='1' order by ordervalue desc";
		DBO dbo = new DBO();
		list = new ArrayList();
		dbo.open();
		try{
			rs = dbo.executeQuery(sql);
			while(rs.next()){
				List list2 = new ArrayList();
				list2.add(rs.getString(1));
				list2.add(rs.getString(2));
				list2.add(rs.getString(3));
				list2.add(rs.getString(4));
				list.add(list2);
			}
			return list;
		}catch(Exception e){
			e.printStackTrace();
			return list;
		}finally{
			dbo.close();
		}
	}
}