TypeError: EthereumTransaction不是构造函数

Question

var EthereumTransaction = require("ethereumjs-tx")

var Web3 = require('web3')

var web3 = new Web3('http://127.0.0.1:7545')

//Setting Receiving and Sending Address

var sendingAddress = acc1

var receivingAddress = acc2

//Checking the balance of each account in ether

web3.eth.getBalance(sendingAddress).then(console.log(web3.utils.fromWei('1', 'ether')))

web3.eth.getBalance(receivingAddress).then(console.log(web3.utils.fromWei('1', 'ether')))

//Creating a transaction

var rawTransaction ={
    nounce:0,
    to:receivingAddress,
    gasPrice:20000000,
    gasLimit:30000,
    value:100,
    data:""
}

//Sign the Transaction

var privateKey = 'private key goes here'

var senderPrivateKeyHex = new Buffer(privateKey,'hex')

var transaction = new EthereumTransaction(rawTransaction)

transaction.sign(senderPrivateKeyHex)

//Send transaction to the network

var serializedTransaction = transaction.serialize()

web3.eth.sendSignedTransaction(serializedTransaction)

发生错误是。

TypeError: EthereumTransaction is not a constructor

Answer 1

之所以发生这种情况，是因为ethereumjs-tx库更改了它的语法。

这是代码的工作版本：

const EthereumTx = require('ethereumjs-tx').Transaction

var Web3 = require('web3')

var web3 = new Web3('http://127.0.0.1:7545')

//Setting Receiving and Sending Address

var sendingAddress = 'ADD SENDING ADDRESS HERE'

var receivingAddress = 'ADD RECEIVING ADDRESS HERE'

//Checking the balance of each account in ether

web3.eth.getBalance(sendingAddress).then(console.log(web3.utils.fromWei('1', 'ether')))

web3.eth.getBalance(receivingAddress).then(console.log(web3.utils.fromWei('1', 'ether')))

//Creating a transaction

var rawTransaction ={
    nonce: web3.utils.toHex(0),
    to: receivingAddress,
    gasPrice: web3.utils.toHex(20000000),
    gasLimit: web3.utils.toHex(30000),
    value: web3.utils.toHex(100),
    data: web3.utils.toHex("")
}

//Sign the Transaction

var privateKey = 'private key goes here'

var senderPrivateKeyHex = new Buffer.from(privateKey,'hex')

var transaction = new EthereumTx(rawTransaction)

transaction.sign(senderPrivateKeyHex)

//Send transaction to the network

var serializedTransaction = transaction.serialize()

web3.eth.sendSignedTransaction(serializedTransaction)

Answer 2

尝尝这个

   var transaction = new TX(rawTransaction); 

而不是这个

  var transaction = new EthereumTransaction(rawTransaction)

Answer 3

var TX = require('ethereumjs-tx').Transaction将删除此错误。