以太坊 web3 sendSignedTransaction：资金不足。该帐户...没有足够的资金。需要 750000000000000 并得到：0

Question

我正在发送已签名的交易并收到错误：

Insufficient funds. The account you tried to send transaction from does not have enough funds. Required 750000000000000 and got: 0.

问题是我的账户有足够的资金，你可以在这里查看0x002D189c25958c60736aE21C966ff3131C2AC849 如果我设置 gasLimit：web3.utils.toHex(20000)，那么我会得到另一个错误：

Transaction gas is too low. There is not enough gas to cover minimal cost of the transaction (minimal: 21464, got: 20000). Try increasing supplied gas.

这是我的 node / web3 代码：

const Web3 = require('web3')

// connect to Infura node
const web3 = new Web3(new Web3.providers.HttpProvider('https://kovan.infura.io/api_key'))

// the addresses & private key 
const addressFrom = '0x002D189c25958c60736aE21C966ff3131C2AC849';
const contractAddress = '0x36075430619b21Fff798454e2D5C81E9C18DEe81';
const privKey = '240462d...';

//ABI objects
var contractABI = new web3.eth.Contract(
    [ ...abi... ],
    contractAddress);
const contractFunction = contractABI.methods.changeBox(5);
const functionABI = contractFunction.encodeABI();

// construct the Tx data
const rawTx = {
    //gasPrice: '0x09184e72a000',
    gasLimit: web3.utils.toHex(25000),
    to: contractAddress,
    from: addressFrom,
    data: functionABI
    };

//sign & send Tx
web3.eth.accounts.signTransaction(rawTx, privKey)
    .then(RLPencodedTx => {
        web3.eth.sendSignedTransaction(RLPencodedTx['rawTransaction'])
            .on('receipt', console.log);
    });

有人知道为什么 web3 会抛出这些错误吗？

Answer 1

I have created the account via Parity and also exported the account as json file, which contains ciphertext, which is the private key

cipthertext 是私钥的加密版本。这个Q&A includes some deeper background，如果你好奇的话。

要获取您的私钥，您需要密钥文件和用于加密它的密码。然后您可以使用 web3.js v1（测试版）中的 web3.eth.accounts.decrypt() 来提取密钥，如下所示：

web3.eth.accounts.decrypt({
    version: 3,
    id: '04e9bcbb-96fa-497b-94d1-14df4cd20af6',
    address: '2c7536e3605d9c16a7a3d7b1898e529396a65c23',
    crypto: {
        ciphertext: 'a1c25da3ecde4e6a24f3697251dd15d6208520efc84ad97397e906e6df24d251',
        cipherparams: { iv: '2885df2b63f7ef247d753c82fa20038a' },
        cipher: 'aes-128-ctr',
        kdf: 'scrypt',
        kdfparams: {
            dklen: 32,
            salt: '4531b3c174cc3ff32a6a7a85d6761b410db674807b2d216d022318ceee50be10',
            n: 262144,
            r: 8,
            p: 1
        },
        mac: 'b8b010fff37f9ae5559a352a185e86f9b9c1d7f7a9f1bd4e82a5dd35468fc7f6'
    }
}, 'test!'); // <-- your password for the account goes in place of 'test!'
> {
    address: "0x2c7536E3605D9C16a7a3D7b1898e529396a65c23",
    privateKey: "0x4c0883a69102937d6231471b5dbb6204fe5129617082792ae468d01a3f362318",
    signTransaction: function(tx){...},
    sign: function(data){...},
    encrypt: function(password){...}
}

以太坊 web3 sendSignedTransaction：资金不足。该帐户...没有足够的资金。需要 750000000000000 并得到：0

Ethereum web3 sendSignedTransaction: Insufficient funds. The account ... does not have enough funds. Required 750000000000000 and got: 0

javascript

node.js

ethereum

web3