src/com/dao/pingjiaDao.java

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




import com.bean.pingjia;
import com.util.DBO;
import java.util.List;
import java.sql.ResultSet;
import java.util.ArrayList;
public class pingjiaDao {
	private DBO db=null;//
	 private pingjia pingjia=null;
	 public void  insert(pingjia pingjia) throws Exception{//添加评价
			db=new DBO();
		   db.open();
			
			String sql = "insert into pingjia (js,xs,sj,jg ) values ('"+pingjia.getJs()+"','"+pingjia.getXs()+"','"+pingjia.getSj()+"','"+pingjia.getJg()+"')";
		
			
			db.update(sql);
			//db.commit();
			db.close();
		
		}
	 public void  modify(pingjia pingjia) throws Exception{//修改评价
			db=new DBO();
		   db.open();
			
			String sql = "update pingjia set  js='"+pingjia.getJs()+"',xs='"+pingjia.getXs()+"',sj='"+pingjia.getSj()+"',jg='"+pingjia.getJg()+"' where pjid ='"+pingjia.getPjid()+"'";
		
			
			db.update(sql);
			//db.commit();
			db.close();
		
		}
	 public void  delete(String keyid) throws Exception{//删除评价
			db=new DBO();
		        db.open();
			
			String sql = "delete from pingjia where pjid='"+keyid+"'";
		
			
			db.update(sql);
			//db.commit();
			db.close();
		
		}
	 public ResultSet  qlist(String sl) throws Exception{//查询评价
		   db=new DBO();
		   db.open();
		   String sql="select * from pingjia where  1=1 ";
		if(!sl.equals("")){
			sql+=sl;
			
		}