src/com/dao/dingdanDao.java

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




import com.bean.dingdan;
import com.util.DBO;
import java.util.List;
import java.sql.ResultSet;
public class dingdanDao {
	private DBO db=null;//
	 private dingdan dingdan=null;
	 public void  insert(dingdan dingdan) throws Exception{//添加订单
			db=new DBO();
		   db.open();
			
			String sql = "insert into dingdan (ddbh,nr,cw,xdsj,shdz,yh,lxdh,zt ) values ('"+dingdan.getDdbh()+"','"+dingdan.getNr()+"','"+dingdan.getCw()+"','"+dingdan.getXdsj()+"','"+dingdan.getShdz()+"','"+dingdan.getYh()+"','"+dingdan.getLxdh()+"','"+dingdan.getZt()+"')";
		
			
			db.update(sql);
			//db.commit();
			db.close();
		
		}
	 public void  modify(dingdan dingdan) throws Exception{//修改订单
			db=new DBO();
		   db.open();
			
			String sql = "update dingdan set  ddbh='"+dingdan.getDdbh()+"',nr='"+dingdan.getNr()+"',cw='"+dingdan.getCw()+"',xdsj='"+dingdan.getXdsj()+"',shdz='"+dingdan.getShdz()+"',yh='"+dingdan.getYh()+"',lxdh='"+dingdan.getLxdh()+"',zt='"+dingdan.getZt()+"' where ddid ='"+dingdan.getDdid()+"'";
		
			
			db.update(sql);
			//db.commit();
			db.close();
		
		}
	 public void  delete(String keyid) throws Exception{//删除订单
			db=new DBO();
		        db.open();
			
			String sql = "delete from dingdan where ddid='"+keyid+"'";
		
			
			db.update(sql);
			//db.commit();
			db.close();
		
		}
	 public ResultSet  qlist(String sl) throws Exception{//查询订单
		   db=new DBO();
		   db.open();
		   String sql="select a.*,b.cwmc from dingdan a,chongwu b where  1=1 and a.cw=b.cwid ";
		if(!sl.equals("")){
			sql+=sl;
			
		}
		   System.out.println("sql="+sql);