public static boolean isTransactionNone() {
        Transaction t = trans.get();
        return null == t || t.getLevel() == Connection.TRANSACTION_NONE;
    }
public static boolean isTransactionNone() {
        Transaction t = trans.get();
        return null == t || t.getLevel() == Connection.TRANSACTION_NONE;
    }
public static boolean isTransactionNone ( ) { Transaction t = trans . get ( ) ; return null == t || t . getLevel ( ) == Connection . TRANSACTION_NONE ; }
是否在事务中
@return 真,如果在不事务中
是否在事务中