erc20 转账问题

V2EX = way to explore

V2EX 是一个关于分享和探索的地方

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这是一个创建于 1928 天前的主题，其中的信息可能已经有所发展或是发生改变。

菜鸟刚入行,问题如题
https://etherscan.io/tx/0x7fd6e95f2495be2d9a69af364aa114ed42b8e4e80ffaf638aa6ca586d0b61493
花了好几刀交智商税了

第 1 条附言 · 2019-09-18 19:18:18 +08:00

   //转账
    public void sendTx(String fromPrivateKey,String toAddress) throws IOException, ExecutionException, InterruptedException {
        String contractAddress = "0xdac17f958d2ee523a2206206994597c13d831ec7";
        ECKeyPair ecKeyPair = ECKeyPair.create(new BigInteger(fromPrivateKey, 16));
        String from = "0x"+Keys.getAddress(ecKeyPair.getPublicKey());
        log.info("from:\t\t{}",from);
        log.info("  to:\t\t{}",toAddress);
        BigDecimal amount = new BigDecimal("1");
        BigInteger amountBigInteger = Convert.toWei(amount, Convert.Unit.MWEI).toBigInteger();
        EthGetTransactionCount ethGetTransactionCount = web3j.ethGetTransactionCount(
                from, DefaultBlockParameterName.LATEST).sendAsync().get();
        BigInteger nonce = ethGetTransactionCount.getTransactionCount();
        //离线签名 代币
        Credentials credentials = Credentials.create(ecKeyPair);
        byte[] signedMessage;
        Function function = new Function(
                "transfer",
                Arrays.asList(new Address(toAddress), new Uint256(amountBigInteger)),
                Arrays.asList(new TypeReference<Type>(){})
        );
        String data = FunctionEncoder.encode(function);
		
        RawTransaction rawTransaction = RawTransaction.createTransaction(nonce, Convert.toWei("38", Convert.Unit.GWEI).toBigInteger(),
                Convert.toWei("30000", Convert.Unit.WEI).toBigInteger(), contractAddress, data);
        signedMessage = TransactionEncoder.signMessage(rawTransaction, credentials);
        String hexValue = Numeric.toHexString(signedMessage);
        log.info("signedData : " + hexValue);
        //广播
        EthSendTransaction send = web3j.ethSendRawTransaction(hexValue).send();
        ...
    }

erc20

转账

菜鸟

问题

13 条回复 • 2020-01-02 09:39:31 +08:00