public void connectionDB(){
		try {
			//ע
			Class.forName(driver);
			//ݿ
			conn=DriverManager.getConnection(url,user,passWord);
			
		} catch (ClassNotFoundException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		} catch (SQLException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		} finally {
		}
	}