離線交易生成 hex交易值屈藐、手動(dòng)廣播出去即可。
廣播交易

// 1、私鑰
        ECKey privKey = ECKey.fromPrivate(Utils.HEX.decode(unspentBean.getPrivKey()));

        // 2、計(jì)算金額
        long amount = (long) (unspentBean.getAmout() * LongMath.pow(10, netParams.getUnitExponent()));// 輸入金額
        long fee = (long) (unspentBean.getFeeD() * LongMath.pow(10, netParams.getUnitExponent())); // 曠工費(fèi)
        long inputSum = 0L; // 總輸入金額
        long needed = amount + fee; // 最終轉(zhuǎn)賬金額：輸入金額+曠工費(fèi)
        long change; // 找零  總輸入-總消費(fèi)

        // 3梗掰、符合的utxo列表
        List<UnspentBean.UtxoBean> utxoList = unspentBean.getUtxos();
        for (UnspentBean.UtxoBean utxo : utxoList) {
            inputSum += utxo.getValue();
            if (inputSum >= needed) {
                break;
            }
        }

        // 4、計(jì)算找零
        change = inputSum - needed;

        // 5嗅回、構(gòu)建交易
        Transaction tx = new Transaction(netParams);
        tx.addOutput(Coin.valueOf(amount), Address.fromBase58(netParams, unspentBean.getToA())); // 轉(zhuǎn)出
        tx.addOutput(Coin.valueOf(change), Address.fromBase58(netParams, unspentBean.getFromA()));// 找零

        // 6及穗、簽名輸出腳本
        for (UnspentBean.UtxoBean utxosBean : utxoList) {
            UTXO sUtxo = new UTXO(Sha256Hash.wrap(utxosBean.getTx_hash()),
                    utxosBean.getTx_pos(),
                    Coin.valueOf(utxosBean.getValue()),
                    utxosBean.getHeight(),
                    false,
                    new Script(Utils.HEX.decode(utxosBean.getScriptPubKey())));
            TransactionOutPoint outPoint = new TransactionOutPoint(netParams, sUtxo.getIndex(), sUtxo.getHash());
            tx.addSignedInput(outPoint, sUtxo.getScript(), privKey, Transaction.SigHash.ALL, true);
        }
        // 7、構(gòu)建交易簽名
        tx.getConfidence().setSource(TransactionConfidence.Source.SELF);
        tx.setPurpose(Transaction.Purpose.USER_PAYMENT);
        String transCode = Utils.HEX.encode(tx.bitcoinSerialize());
        Logger.e("交易簽名:"+transCode);