Solidity
獲取錯誤資金不足gas * price + value
我幾乎搜尋了所有重複的問題，但沒有得到任何幫助。有人可以指出什麼是錯誤的，為什麼我會出錯
insufficient funds for gas * price + value，我仔細檢查了一下，我的測試帳戶中有足夠的乙太幣。一些控制台輸出：
console.log('web3 version:'+ web3.version); web3.eth.net.getId(function(err, res){ console.log("Net: "+res); }); web3.eth.net.getNetworkType(function(err, res){ console.log("getNetworkType: "+res); }); web3.eth.getBlockNumber(function(error, result){ console.log("Block Number: "+result); }); web3 version:1.0.0-beta.34 Block Number: 3085927 291 Net: 3 getNetworkType: ropsten我的簡單網頁：
<!DOCTYPE html> <html lang="en"> <head> <script src="http://example.com/js/jquery.js"></script> <script src="http://example.com/js/web3.js-1.0.0-beta.34/dist/web3.min.js"></script> </head> <body> <button class="btn btn-primary" onclick="sendTrans();">Send Trans</button> <script type="text/javascript"> var web3 = new Web3(new Web3.providers.HttpProvider('http://45:158:654:7:8545')); function sendTrans(){ // ShahzadTestCoin contract ABI Array var abiArray =[{"constant":true,"inputs":[],"name":"name","outputs":[{"name":"","type":"string"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":false,"inputs":[{"name":"_spender","type":"address"},{"name":"_value","type":"uint256"}],"name":"approve","outputs":[{"name":"success","type":"bool"}],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":true,"inputs":[],"name":"totalSupply","outputs":[{"name":"","type":"uint256"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":true,"inputs":[],"name":"fundsWallet","outputs":[{"name":"","type":"address"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":false,"inputs":[{"name":"_from","type":"address"},{"name":"_to","type":"address"},{"name":"_value","type":"uint256"}],"name":"transferFrom","outputs":[{"name":"success","type":"bool"}],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":true,"inputs":[],"name":"decimals","outputs":[{"name":"","type":"uint8"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":true,"inputs":[],"name":"version","outputs":[{"name":"","type":"string"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":true,"inputs":[],"name":"unitsOneEthCanBuy","outputs":[{"name":"","type":"uint256"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":true,"inputs":[{"name":"_owner","type":"address"}],"name":"balanceOf","outputs":[{"name":"balance","type":"uint256"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":true,"inputs":[],"name":"totalEthInWei","outputs":[{"name":"","type":"uint256"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":true,"inputs":[],"name":"symbol","outputs":[{"name":"","type":"string"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":false,"inputs":[{"name":"_to","type":"address"},{"name":"_value","type":"uint256"}],"name":"transfer","outputs":[{"name":"success","type":"bool"}],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":false,"inputs":[{"name":"_spender","type":"address"},{"name":"_value","type":"uint256"},{"name":"_extraData","type":"bytes"}],"name":"approveAndCall","outputs":[{"name":"success","type":"bool"}],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":true,"inputs":[{"name":"_owner","type":"address"},{"name":"_spender","type":"address"}],"name":"allowance","outputs":[{"name":"remaining","type":"uint256"}],"payable":false,"stateMutability":"view","type":"function"},{"inputs":[],"payable":false,"stateMutability":"nonpayable","type":"constructor"},{"payable":true,"stateMutability":"payable","type":"fallback"},{"anonymous":false,"inputs":[{"indexed":true,"name":"_from","type":"address"},{"indexed":true,"name":"_to","type":"address"},{"indexed":false,"name":"_value","type":"uint256"}],"name":"Transfer","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"name":"_owner","type":"address"},{"indexed":true,"name":"_spender","type":"address"},{"indexed":false,"name":"_value","type":"uint256"}],"name":"Approval","type":"event"}]; // Who holds the token now? var myAddress = "0x429C4474c5914a28063e2C37cA23bb4aF9ef0728"; //5.978318602 Ether//https://ropsten.etherscan.io/address/0x429C4474c5914a28063e2C37cA23bb4aF9ef0728 // Who are we trying to send this token to? var destAddress = "0x0346d2e50E29065b3b3c73B878FaFDcEb8Ee13f0"; //4.999873784 Ether//https://ropsten.etherscan.io/address/0x0346d2e50E29065b3b3c73B878FaFDcEb8Ee13f0 // ShahzadTestCoin Token (STC) // The address of the contract var contractAddress = "0xc61BEC3497e549b9fA58AE79a5a573E064fe3311";//https://ropsten.etherscan.io/address/0xc61bec3497e549b9fa58ae79a5a573e064fe3311 var myContract = new web3.eth.Contract(abiArray, contractAddress); myContract.options.from = myAddress; var privateKey = 'a369264ebe211xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx'; var transactionObject = { from: myAddress, to: contractAddress, value: '0x0', data: myContract.methods.transfer(destAddress, 5).encodeABI(), chainId: 3 }; web3.eth.getGasPrice(function(err, getGasPrice){ if(!err){ console.log("getGasPrice: "+getGasPrice); transactionObject.gasPrice = getGasPrice; web3.eth.estimateGas(transactionObject, function(err, estimateGas){ console.log("estimateGas err: "+err); console.log("estimateGas res: "+estimateGas); transactionObject.gas = estimateGas; web3.eth.accounts.signTransaction(transactionObject, privateKey , function(err, signed){ console.log("signTransaction err: "+err); if(!err){ console.log("signTransaction signed: "+signed.rawTransaction); web3.eth.sendSignedTransaction(signed.rawTransaction, function(err, res){ console.log("sendSignedTransaction err: "+err); if(!err){ console.log("sendSignedTransaction res: "+res); } }); } }); }); } }); } </scrip> </body> </html>合約原始碼：
pragma solidity ^0.4.4; contract Token { /// @return total amount of tokens function totalSupply() constant returns (uint256 supply) {} /// @param _owner The address from which the balance will be retrieved /// @return The balance function balanceOf(address _owner) constant returns (uint256 balance) {} /// @notice send `_value` token to `_to` from `msg.sender` /// @param _to The address of the recipient /// @param _value The amount of token to be transferred /// @return Whether the transfer was successful or not function transfer(address _to, uint256 _value) returns (bool success) {} /// @notice send `_value` token to `_to` from `_from` on the condition it is approved by `_from` /// @param _from The address of the sender /// @param _to The address of the recipient /// @param _value The amount of token to be transferred /// @return Whether the transfer was successful or not function transferFrom(address _from, address _to, uint256 _value) returns (bool success) {} /// @notice `msg.sender` approves `_addr` to spend `_value` tokens /// @param _spender The address of the account able to transfer the tokens /// @param _value The amount of wei to be approved for transfer /// @return Whether the approval was successful or not function approve(address _spender, uint256 _value) returns (bool success) {} /// @param _owner The address of the account owning tokens /// @param _spender The address of the account able to transfer the tokens /// @return Amount of remaining tokens allowed to spent function allowance(address _owner, address _spender) constant returns (uint256 remaining) {} event Transfer(address indexed _from, address indexed _to, uint256 _value); event Approval(address indexed _owner, address indexed _spender, uint256 _value); } contract StandardToken is Token { function transfer(address _to, uint256 _value) returns (bool success) { //Default assumes totalSupply can't be over max (2^256 - 1). //If your token leaves out totalSupply and can issue more tokens as time goes on, you need to check if it doesn't wrap. //Replace the if with this one instead. //if (balances[msg.sender] >= _value && balances[_to] + _value > balances[_to]) { if (balances[msg.sender] >= _value && _value > 0) { balances[msg.sender] -= _value; balances[_to] += _value; Transfer(msg.sender, _to, _value); return true; } else { return false; } } function transferFrom(address _from, address _to, uint256 _value) returns (bool success) { //same as above. Replace this line with the following if you want to protect against wrapping uints. //if (balances[_from] >= _value && allowed[_from][msg.sender] >= _value && balances[_to] + _value > balances[_to]) { if (balances[_from] >= _value && allowed[_from][msg.sender] >= _value && _value > 0) { balances[_to] += _value; balances[_from] -= _value; allowed[_from][msg.sender] -= _value; Transfer(_from, _to, _value); return true; } else { return false; } } function balanceOf(address _owner) constant returns (uint256 balance) { return balances[_owner]; } function approve(address _spender, uint256 _value) returns (bool success) { allowed[msg.sender][_spender] = _value; Approval(msg.sender, _spender, _value); return true; } function allowance(address _owner, address _spender) constant returns (uint256 remaining) { return allowed[_owner][_spender]; } mapping (address => uint256) balances; mapping (address => mapping (address => uint256)) allowed; uint256 public totalSupply; } contract ShahzadTestCoin is StandardToken { // CHANGE THIS. Update the contract name. /* Public variables of the token */ /* NOTE: The following variables are OPTIONAL vanities. One does not have to include them. They allow one to customise the token contract & in no way influences the core functionality. Some wallets/interfaces might not even bother to look at this information. */ string public name; // Token Name uint8 public decimals; // How many decimals to show. To be standard complicant keep it 18 string public symbol; // An identifier: eg SBX, XPR etc.. string public version = 'H1.0'; uint256 public unitsOneEthCanBuy; // How many units of your coin can be bought by 1 ETH? uint256 public totalEthInWei; // WEI is the smallest unit of ETH (the equivalent of cent in USD or satoshi in BTC). We'll store the total ETH raised via our ICO here. address public fundsWallet; // Where should the raised ETH go? // This is a constructor function // which means the following function name has to match the contract name declared above function ShahzadTestCoin() { balances[msg.sender] = 1000000000000000000000; // Give the creator all initial tokens. This is set to 1000 for example. If you want your initial tokens to be X and your decimal is 5, set this value to X * 100000. (CHANGE THIS) totalSupply = 1000000000000000000000; // Update total supply (1000 for example) (CHANGE THIS) name = "ShahzadTestCoin"; // Set the name for display purposes (CHANGE THIS) decimals = 18; // Amount of decimals for display purposes (CHANGE THIS) symbol = "STCN"; // Set the symbol for display purposes (CHANGE THIS) unitsOneEthCanBuy = 10; // Set the price of your token for the ICO (CHANGE THIS) fundsWallet = msg.sender; // The owner of the contract gets ETH } function() payable{ totalEthInWei = totalEthInWei + msg.value; uint256 amount = msg.value * unitsOneEthCanBuy; require(balances[fundsWallet] >= amount); balances[fundsWallet] = balances[fundsWallet] - amount; balances[msg.sender] = balances[msg.sender] + amount; Transfer(fundsWallet, msg.sender, amount); // Broadcast a message to the blockchain //Transfer ether to fundsWallet fundsWallet.transfer(msg.value); } /* Approves and then calls the receiving contract */ function approveAndCall(address _spender, uint256 _value, bytes _extraData) returns (bool success) { allowed[msg.sender][_spender] = _value; Approval(msg.sender, _spender, _value); //call the receiveApproval function on the contract you want to be notified. This crafts the function signature manually so one doesn't have to include a contract in here just for this. //receiveApproval(address _from, uint256 _value, address _tokenContract, bytes _extraData) //it is assumed that when does this that the call *should* succeed, otherwise one would use vanilla approve instead. if(!_spender.call(bytes4(bytes32(sha3("receiveApproval(address,uint256,address,bytes)"))), msg.sender, _value, this, _extraData)) { throw; } return true; } }
根據對該問題的評論，您需要在
0x私鑰的開頭添加一個。web3.js通常需要此前綴，因此它知道您提供的字元串是字節序列的十六進製表示（如私鑰）。