src/com/dao/shangpinDao.java

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package com.dao;
import java.sql.Connection;
import java.sql.PreparedStatement;
import java.sql.ResultSet;




import com.bean.shangpin;
import com.util.DBO;
import java.util.List;
import java.sql.ResultSet;
public class shangpinDao {
	private DBO db=null;//
	 private shangpin shangpin=null;
	 public void  insert(shangpin shangpin) throws Exception{//添加商品
			db=new DBO();
		   db.open();
			
			String sql = "insert into shangpin (sp,lb,cd,jg,ms,tp,sftj ) values ('"+shangpin.getSp()+"','"+shangpin.getLb()+"','"+shangpin.getCd()+"','"+shangpin.getJg()+"','"+shangpin.getMs()+"','"+shangpin.getTp()+"','"+shangpin.getSftj()+"')";
		
			
			db.update(sql);
			//db.commit();
			db.close();
		
		}
	 public void  modify(shangpin shangpin) throws Exception{//修改商品
			db=new DBO();
		   db.open();
			
			String sql = "update shangpin set  sp='"+shangpin.getSp()+"',lb='"+shangpin.getLb()+"',cd='"+shangpin.getCd()+"',jg='"+shangpin.getJg()+"',ms='"+shangpin.getMs()+"',tp='"+shangpin.getTp()+"',sftj='"+shangpin.getSftj()+"' where spid ='"+shangpin.getSpid()+"'";
		
			
			db.update(sql);
			//db.commit();
			db.close();
		
		}
	 public void  delete(String keyid) throws Exception{//删除商品
			db=new DBO();
		        db.open();
			
			String sql = "delete from shangpin where spid='"+keyid+"'";
		
			
			db.update(sql);
			//db.commit();
			db.close();
		
		}
	 public ResultSet  qlist(String sl) throws Exception{//查询商品
		   db=new DBO();
		   db.open();
		   String sql="select * from shangpin where  1=1 ";
		if(!sl.equals("")){
			sql+=sl;
			
		}
		   System.out.println("sql="+sql);