private void quietRollback(Connection conn) {
		if (null != conn) {
			try {
				conn.rollback();
			} catch (Exception e) {
				StaticLog.error(e);
			}
		}
	}
private void quietRollback ( Connection conn ) { if ( null != conn ) { try { conn . rollback ( ) ; } catch ( Exception e ) { StaticLog . error ( e ) ; } } }
静默回滚事务

@param conn Connection