Web3-发送交易导致“无效的发送者”

Question

我正在尝试通过Infura节点使用web3在智能合约（Ropsten）上调用函数。 我已经在Metmask中创建了一个测试帐户，并导出了帐户地址和私钥。 详细信息看起来正确，但是我收到错误{"code":-32000,"message":"invalid sender"} 。 我猜这是交易签名的问题吗？

这是我的代码

 const Web3 = require('web3'); const Tx = require('ethereumjs-tx').Transaction; const fs = require('fs'); const pk = Buffer.from('PRIVATE KEY FROM METAMASK', 'hex') const sourceAccount = 'ACCOUNT ADDRESS FROM METAMASK' const web3 = new Web3(new Web3.providers.HttpProvider("https://ropsten.infura.io/v3/API_KEY")); const consumerAddress = '0xc36577aa0171f649be6bd7205148ed83c07198ee'; web3.eth.defaultAccount = sourceAccount; //Get Consumer contract instance const consumerAbi = JSON.parse(fs.readFileSync('rental-contract-abi.json', 'utf8')); let consumerContract = new web3.eth.Contract(consumerAbi, consumerAddress); const myData = consumerContract.methods.checkDate("e716efba3b404da98e28faaa2939c0fd","2019-06-04","AU-NSW").encodeABI(); web3.eth.getTransactionCount(sourceAccount, (err, txCount) => { // Build the transaction const txObject = { nonce: web3.utils.toHex(txCount), to: consumerAddress, from: sourceAccount, chainId: 3, value: web3.utils.toHex(web3.utils.toWei('0', 'ether')), gasLimit: web3.utils.toHex(2100000), gasPrice: web3.utils.toHex(web3.utils.toWei('6', 'gwei')), data: myData } // Sign the transaction const tx = new Tx(txObject); tx.sign(pk); const feeCost = tx.getUpfrontCost() console.log('Total Amount of ETH needed:' + web3.utils.fromWei(feeCost.toString(), 'ether')) console.log('---Serialized TX----') console.log(tx.serialize().toString('hex')) console.log('--------------------') const serializedTx = tx.serialize(); const raw = '0x' + serializedTx.toString('hex'); // Broadcast the transaction const transaction = web3.eth.sendSignedTransaction(raw, (err, tx) => { console.log(tx); console.log(err); }); }); 

Answer 1

您需要在签署交易时添加网络信息。 请参阅最新的web3文档。 将签名交易代码更改为：

const tx = new Tx(txObject,{'chain':'ropsten'});