xianzhijiaoyi/src/com/service/liuService.java

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package com.service;

import java.io.IOException;
import java.sql.ResultSet;
import java.util.ArrayList;
import java.util.List;
import java.util.Random;

import javax.servlet.ServletException;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import com.dao.DB;
import com.orm.Tleixing;
import com.orm.Twupin;
import com.orm.Torder;
public class liuService
{
	public static List leixingList()
	{
		List leixingList=new ArrayList();
		String sql="select * from t_leixing";
		Object[] params={};
		DB mydb=new DB();
		try
		{
			mydb.doPstm(sql, params);
			ResultSet rs=mydb.getRs();
			while(rs.next())
			{
				Tleixing leixing=new Tleixing();
				leixing.setleixingID(rs.getInt("leixingID"));
				leixing.setleixingName(rs.getString("leixingName"));
				leixingList.add(leixing);
		    }
			rs.close();
		}
		catch(Exception e)
		{
			e.printStackTrace();
		}
		mydb.closed();
		return leixingList;
	}
	public static Twupin getwupin(int id)
	{
		Twupin wupin=new Twupin();
		String sql="select a.*,b.leixingName from t_wupin a left join t_leixing b on a.leixingID=b.leixingID where wpID=?";
		Object[] params={id};
		DB mydb=new DB();
		try
		{
			mydb.doPstm(sql, params);
			ResultSet rs=mydb.getRs();
			rs.next();
			wupin.setwpID(rs.getInt("wpID"));	
			wupin.setyhID(rs.getInt("yhID"));
			wupin.setwpName(rs.getString("wpName"));
			wupin.setwpriqi(rs.getString("wpriqi"));
			wupin.setwpjieshao(rs.getString("wpjieshao"));