src/com/dao/liuchengDao.java

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




import com.bean.liucheng;
import com.util.DBO;
import java.util.List;
import java.sql.ResultSet;
public class liuchengDao {
	private DBO db=null;//
	 private liucheng liucheng=null;
	 public void  insert(liucheng liucheng) throws Exception{//添加流程
			db=new DBO();
		   db.open();
			
			String sql = "insert into liucheng (lc,shr,xh ) values ('"+liucheng.getLc()+"','"+liucheng.getShr()+"','"+liucheng.getXh()+"')";
		
			
			db.update(sql);
			//db.commit();
			db.close();
		
		}
	 public void  modify(liucheng liucheng) throws Exception{//修改流程
			db=new DBO();
		   db.open();
			
			String sql = "update liucheng set  lc='"+liucheng.getLc()+"',shr='"+liucheng.getShr()+"',xh='"+liucheng.getXh()+"' where lcid ='"+liucheng.getLcid()+"'";
		
			
			db.update(sql);
			//db.commit();
			db.close();
		
		}
	 public void  delete(String keyid) throws Exception{//删除流程
			db=new DBO();
		        db.open();
			
			String sql = "delete from liucheng where lcid='"+keyid+"'";
		
			
			db.update(sql);
			//db.commit();
			db.close();
		
		}
	 public ResultSet  qlist(String sl) throws Exception{//查询流程
		   db=new DBO();
		   db.open();
		   String sql="select * from liucheng where  1=1 ";
		if(!sl.equals("")){
			sql+=sl;
			
		}
		   System.out.println("sql="+sql);