如何使用 sendRawTransaction 呼叫已部署的智能合約

使用此程式碼，我想呼叫我的令牌智能合約的傳輸功能。據我所知，我必須將此“.transfer（address，amount）”添加到數據欄位中。我對麼？我也在使用 web3 0.20。在這個版本中，我必須使用 getData 對嗎？所以這將是var dataforTx = mycontract.tranfer.getData(address,amount); 然後將該 dataforTx 添加到數據欄位？

var Tx = require(’ethereumjs-tx’); var privateKey = new Buffer(’e331b6d69882b4cb4ea581d88e0b604039a3de5967688d3dcffdd2270c0fd109’, ‘hex’)

VAR rawTx = {隨機數：‘0×00’，gasPrice：‘0x09184e72a000’，

gasLimit：‘0x2710’，到：“0x0000000000000000000000000000000000000000’，值：‘0×00’，

**數據：‘0x7f7465737432000000000000000000000000000000000000000000000000000000600057’} ** //如何獲取我的 dataforTx 的十六進制值??????????

var tx = 新的 Tx(rawTx); tx.sign(privateKey);

var serializedTx = tx.serialize();

//console.log(serializedTx.toString(‘hex’));

web3.eth.sendRawTransaction(‘0x’ + serializedTx.toString(‘hex’), function(err, hash) { if (!err) console.log(hash); // “0x7f9fade1c0d57a7af66ab4ead79fade1c0d57a7af66ab4ead7c2c2eb7b11a91385” });

我仍然無法轉移令牌。它返回雜湊值但不反映其他帳戶中的任何餘額。如果我使用 balanceOf 那麼如何在 sendRawTransaction 中擷取 balanceOf 函式的輸出

var abi=[//your abi array];

var contractAddress = "//your contract address";

var contract = web3.eth.contract(abi).at(contractAddress);


let send_add = data.send_public_address;

let recv_add = rec_public_address;

let amount = web3.toHex(transfer_amount),

let nonce = web3.toHex(web3.eth.getTransactionCount(send_public_address));

var private_key = privatekey_sender.slice(2);

let gas = web3.toHex(data.gas_limit);

let gasPrice = web3.toHex(data.gas_price);

var rawTx = {

       from: send_add,

       nonce: nonce,

       gasLimit: gas,

       gasPrice: gasPrice,

       amount: web3.toHex(transfer_amount),

       to: recv_add,

   };

var transaction = new tx(rawTx);

var txData = new Buffer(private_key, 'hex');

transaction.sign(txData);

var serializedTx = transaction.serialize().toString('hex');

contract.transfer.sendTransaction(recv_add , amount , {'0x' + serializedTx}, 
function (err, txHash) {

       if (txHash) {

           next(null, txHash);

       }

       else if (err && err.message) {

           next(err.message, null);

       }

       else {

           next('Unable to sendTransaction', null);

       }

   });

在這裡我為這個問題做了一個教程https://github.com/pubkey/eth-crypto/blob/master/tutorials/signed-data.md#deploy-the-contract

引用自：https://ethereum.stackexchange.com/questions/47196