web3j调用合约的两种方式以及eth转账

token转账参数即data字段
 String methodName = "transfer";
 List<Type> inputParameters = new ArrayList<>();
 List<TypeReference<?>> outputParameters = new ArrayList<>();
 Address tAddress = new Address(toAddress);
 Uint256 tokenValue = new Uint256(BigDecimal.valueOf(amount).multiply(BigDecimal.TEN.pow(decimals)).toBigInteger());
 inputParameters.add(tAddress);
 inputParameters.add(tokenValue);
 TypeReference<Bool> typeReference = new TypeReference<Bool>() {
 };
 outputParameters.add(typeReference);
 Function function = new Function(methodName, inputParameters, outputParameters);
 String data = FunctionEncoder.encode(function);

TokenERC20 contract = TokenERC20.load(contractAddress, web3j, credentials,
 Convert.toWei("10", Convert.Unit.GWEI).toBigInteger(),
 BigInteger.valueOf(100000));
 String myAddress = null;
 String toAddress = null;
 BigInteger amount = BigInteger.ONE;
 try {
 TransactionReceipt receipt = contract.transfer(toAddress, amount).send();
 } catch (Exception e) {
 e.printStackTrace();
 }

eth转账及普通转账
 BigInteger nonce;
 EthGetTransactionCount ethGetTransactionCount = null;
 try {
 ethGetTransactionCount =
 getClient()
 .ethGetTransactionCount(fromAddress, DefaultBlockParameterName.LATEST).send();
 } catch (Exception e) {
 e.printStackTrace();
 }
 if (ethGetTransactionCount == null) return null;
 nonce = ethGetTransactionCount.getTransactionCount();
 BigInteger gasPrice = Convert.toWei(gas, Convert.Unit.GWEI).toBigInteger();
 BigInteger value = Convert.toWei(balance, Convert.Unit.ETHER).toBigInteger();
 String data = "";
 byte chainId = ChainId.NONE; // 测试网络

RawTransaction rawTransaction = RawTransaction.createTransaction(
 nonce,
 gasPrice,
 gasLimit,
 to,
 value,
 data);
 ECKeyPair ecKeyPair = ECKeyPair.create(new BigInteger(privateKey, 16));
 Credentials credentials = Credentials.create(ecKeyPair);
 byte[] signedMessage = TransactionEncoder.signMessage(rawTransaction, credentials;
 String hexValue = Numeric.toHexString(signedMessage);
 EthSendTransaction ethSendTransaction = web3j.ethSendRawTransaction(signedData).send();
 System.out.println(ethSendTransaction.getTransactionHash());