@Test
	public void editUser(){
		
		Connection conn = null;
		Statement statement = null;
		
		try{
			
			conn = JDBCUtils.getConnection();
			statement = conn.createStatement();
			statement.executeUpdate("UPDATE table_user set age = 20 where name='Lily'");
		
		}catch (Exception e) {
			e.printStackTrace();
		}finally{	
			/* 关闭连接、传输对象和结果集。 */
			JDBCUtils.close(conn, statement, null);
		}
		
		JDBCUtils.close(conn, statement, null);
	}