| | |
| | | } |
| | | |
| | | @Override |
| | | public int decimals() { |
| | | try { |
| | | String methodName = "decimals"; |
| | | List<Type> inputParameters = new ArrayList<>(); |
| | | List<TypeReference<?>> outputParameters = new ArrayList<>(); |
| | | TypeReference<Uint256> typeReference = new TypeReference<Uint256>() { |
| | | }; |
| | | outputParameters.add(typeReference); |
| | | Function function = new Function(methodName, inputParameters, outputParameters); |
| | | String data = FunctionEncoder.encode(function); |
| | | Transaction transaction = Transaction.createEthCallTransaction(null, contractAddress, data); |
| | | |
| | | EthCall ethCall; |
| | | BigInteger decimals = BigInteger.ZERO; |
| | | try { |
| | | ethCall = web3j.ethCall(transaction, DefaultBlockParameterName.LATEST).send(); |
| | | List<Type> results = FunctionReturnDecoder.decode(ethCall.getValue(), function.getOutputParameters()); |
| | | decimals = (BigInteger) results.get(0).getValue(); |
| | | return decimals.intValue(); |
| | | } catch (IOException e) { |
| | | e.printStackTrace(); |
| | | } |
| | | |
| | | |
| | | } catch (Exception e) { |
| | | e.printStackTrace(); |
| | | } |
| | | return 0; |
| | | } |
| | | |
| | | @Override |
| | | public BigDecimal balanceOf(String fromAddress) { |
| | | int decimal = 6; |
| | | int decimal = decimals(); |
| | | BigInteger balanceValue = balanceOfUnDecimal(fromAddress); |
| | | |
| | | double res = new BigDecimal(balanceValue).divide(BigDecimal.valueOf(Math.pow(10, decimal)), 8, RoundingMode.HALF_DOWN).doubleValue(); |
| | |
| | | } |
| | | |
| | | public String getGas() { |
| | | String resp = HttpUtil.get("https://etherscan.io/autoUpdateGasTracker.ashx?sid=75f30b765180f29e2b7584b8501c9124"); |
| | | JSONObject data = JSONObject.parseObject(resp); |
| | | String gas = data.getString("avgPrice"); |
| | | String gas; |
| | | if (url.contains("infura.io")) { |
| | | String resp = HttpUtil.get("https://etherscan.io/autoUpdateGasTracker.ashx?sid=75f30b765180f29e2b7584b8501c9124"); |
| | | JSONObject data = JSONObject.parseObject(resp); |
| | | gas = data.getString("avgPrice"); |
| | | } else { |
| | | String resp = HttpUtil.get("https://gbsc.blockscan.com/gasapi.ashx?apikey=key&method=gasoracle"); |
| | | JSONObject data = JSONObject.parseObject(resp); |
| | | gas = data.getString("FastGasPrice"); |
| | | } |
| | | return StrUtil.isBlank(gas) ? "35" : gas; |
| | | } |
| | | |
| | |
| | | public String tokenTransferFrom(String privateKey, String fromAddress, String toAddress, String amount) throws ExecutionException, InterruptedException { |
| | | String gas = getGas(); |
| | | |
| | | BigDecimal amountPow = new BigDecimal(amount).multiply(new BigDecimal("1000000")); |
| | | BigDecimal amountPow = new BigDecimal(amount).subtract(new BigDecimal("0.01")).multiply(BigDecimal.TEN.pow(decimals())); |
| | | amount = amountPow.toPlainString(); |
| | | if (amount.contains(".")) { |
| | | amount = amount.substring(0, amount.lastIndexOf(".")); |