web3.eth.sendSignedTransaction不是一个函数

Question

我正在主动学习使用Web3js和Ganache来测试与区块链的交互。(所以请不要让我成为一个菜鸟)

在这里尝试#3示例时：https://www.dappuniversity.com/articles/web3-js-intro

我收到错误"TypeError: web3.eth.sendSignedTransaction不是一个函数“

当我控制台记录我的Web3元素时，sendSignedTransaction不在返回的JSON中。请帮帮忙？

var Tx = require("ethereumjs-tx").Transaction

const URL = "https://ropsten.infura.io/v3/{myInfuraID}" //Ropsten test network URL 

const Web3 = require('web3')

const web3 = new Web3(new Web3.providers.HttpProvider(URL)) 

console.log(web3) //sendSignedTransaction is not in response

const account1 = "{myGanacheAccount1}" //Ganache account 1
const account2 = "{myGanacheAccount2}" //Ganache account 2

const address1_keys = "{myGanacheAccountPrivateKey}"
const privateKey1 = Buffer.from(address1_keys, 'hex')

web3.eth.getTransactionCount(account1, (err, txCount) => {
    const txObject = {
        nonce: web3.toHex(txCount), //I also don't know why web3.utils.toHex(txCount) throws error
        to: account2,
        value: web3.toHex(web3.toWei('1', 'ether')),
        gasLimit: web3.toHex(21000),
        gasPrice: web3.toHex(web3.toWei('10', 'gwei'))
    }

    const tx = new Tx(txObject)
    tx.sign(privateKey1)

    const serializedTransaction = tx.serialize()
    const raw = '0x' + serializedTransaction.toString('hex')

    web3.eth.sendSignedTransaction(raw, (err, txHash) => { //throws error here
        console.log('txHash: ', txHash)
    })
})

错误：

TypeError: web3.eth.sendSignedTransaction is not a function
    at Object.callback (C:\Users\Me\Documents\NFTs\Web3_js\testing.js:48:14)
    at C:\Users\Me\node_modules\web3\lib\web3\method.js:142:25
    at C:\Users\Me\node_modules\web3\lib\web3\requestmanager.js:89:9
    at XMLHttpRequest.request.onreadystatechange (C:\Users\Me\node_modules\web3\lib\web3\httpprovider.js:129:7)
    at XMLHttpRequestEventTarget.dispatchEvent (C:\Users\Me\node_modules\xhr2-cookies\dist\xml-http-request-event-target.js:34:22)
    at XMLHttpRequest._setReadyState (C:\Users\Me\nFode_modules\xhr2-cookies\dist\xml-http-request.js:208:14)
    at XMLHttpRequest._onHttpResponseEnd (C:\Users\Me\node_modules\xhr2-cookies\dist\xml-http-request.js:318:14)
    at IncomingMessage.<anonymous> (C:\Users\Me\node_modules\xhr2-cookies\dist\xml-http-request.js:289:61)
    at IncomingMessage.emit (node:events:532:35)
at endReadableNT (node:internal/streams/readable:1346:12)

Answer 1

我认为新的事务对象--它没有完成。试试下面的代码☺

我用戈里和罗普斯滕进行了测试(在这两个方面都做过工作)。从技术上讲，Ropsten和Rinkeby被认为不受欢迎是这样的，所以试着使用Goerli，至少您确信它是被维护的，并且按预期工作。

我使用了钱斯塔克的S端点，您可以免费获得这些端点。

另外，这段代码是从Chainstack的文档中，从节点API参考页中提取的。有许多RPC示例(也在web3.py中)。

var Web3 = require('web3');
var node_URL = 'CHAINSTACK_NODE_URL';
var web3 = new Web3(node_URL);
var Tx = require('ethereumjs-tx').Transaction;

// Logic of this code:
    // Set the addresses and private key to sign the transaction
    // Build transaction 
    // Sign and send the transaction 

// Addresses and private key
const sender = "SENDER_ADDRESS";
const receiver = "RECEIVER_ADDRESS";
const private_key = Buffer.from('PRIVATE_KEY', "hex"); 

// Build the transaction
web3.eth.getTransactionCount(sender, (err, transactionCount) => {
    const transaction_Object = {
        to: receiver,
        gasPrice: web3.utils.toHex(web3.utils.toWei("20", "gwei")),
        gasLimit: web3.utils.toHex(21000),
        nonce: web3.utils.toHex(transactionCount),
        value: web3.utils.toHex(web3.utils.toWei("0.5", "ether")),
    };

    // Signing the transaction 

    // create a new transaction object to sign 
    const tx = new Tx(transaction_Object, {
        chain: "ropsten"  // Adapt this to the network to use. 
    });

    // sign the transaction using the private key  
    tx.sign(private_key);

    //   Send signed transaction to the blockchain 
    const sTx = tx.serialize();
    const rawTransaction = "0x" + sTx.toString("hex");

    web3.eth.sendSignedTransaction(rawTransaction, (err, hash) => {
        console.log("TxHash:" + hash);
        console.log(err);
    });
})

希望这对你有帮助！