src/com/dao/xiaoxiDao.java

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




import com.bean.xiaoxi;
import com.util.DBO;
import java.util.List;
import java.sql.ResultSet;
public class xiaoxiDao {
	private DBO db=null;//
	 private xiaoxi xiaoxi=null;
	 public void  insert(xiaoxi xiaoxi) throws Exception{//添加消息
			db=new DBO();
		   db.open();
			
			String sql = "insert into xiaoxi (bt,nr,sj,fsr,jsr,zt ) values ('"+xiaoxi.getBt()+"','"+xiaoxi.getNr()+"','"+xiaoxi.getSj()+"','"+xiaoxi.getFsr()+"','"+xiaoxi.getJsr()+"','"+xiaoxi.getZt()+"')";
		
			
			db.update(sql);
			//db.commit();
			db.close();
		
		}
	 public void  modify(xiaoxi xiaoxi) throws Exception{//修改消息
			db=new DBO();
		   db.open();
			
			String sql = "update xiaoxi set  bt='"+xiaoxi.getBt()+"',nr='"+xiaoxi.getNr()+"',sj='"+xiaoxi.getSj()+"',fsr='"+xiaoxi.getFsr()+"',jsr='"+xiaoxi.getJsr()+"',zt='"+xiaoxi.getZt()+"' where xxid ='"+xiaoxi.getXxid()+"'";
		
			
			db.update(sql);
			//db.commit();
			db.close();
		
		}
	 public void  delete(String keyid) throws Exception{//删除消息
			db=new DBO();
		        db.open();
			
			String sql = "delete from xiaoxi where xxid='"+keyid+"'";
		
			
			db.update(sql);
			//db.commit();
			db.close();
		
		}
	 public ResultSet  qlist(String sl) throws Exception{//查询消息
		   db=new DBO();
		   db.open();
		   String sql="select * from xiaoxi where  1=1 ";
		if(!sl.equals("")){
			sql+=sl;
			
		}
		   System.out.println("sql="+sql);