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ERC721 mint()返回“无效地址”错误

ethereum express node.js

raimtoon · 技术社区 · 6 年前

我可以通过truffle控制台创建ERC721令牌,但通过JavaScript失败了。

{发送:'0xc1dc87a29fbe200ff180df67c01e454818feee433b13331c4ea9268624db077b', 收据:{blockHash: 区块号:251489,。。。

错误消息是

'UnhandledPromiseEjectionWarning:未处理的promise拒绝(拒绝id:2):错误:无效地址'

我的代码如下:

var Web3 = require('web3');
var BigNumber = require('bignumber.js');
var contract = require("truffle-contract");
var contractJson = require("./build/contracts/MyToken.json");
var MyToken = contract(contractJson);
Web3.providers.HttpProvider.prototype.sendAsync = Web3.providers.HttpProvider.prototype.send;
var web3 = new Web3();
web3.setProvider(new web3.providers.HttpProvider(web3Provider));
MyToken.setProvider(web3.currentProvider);

MyToken.deployed().then(function(mytoken) {
    mytoken.mint();
}

minting

1 回复 | 直到 6 年前

William Entriken 5 年前

更新的代码

下面是一个与代码一起工作的更新测试。

const NFToken = artifacts.require('NFTokenMock');

contract('NFTokenMock', (accounts) => {
    let nftoken;
    const id1 = 1;
    const id2 = 2;
    const id3 = 3;
    const id4 = 40000;

    beforeEach(async () => {
      nftoken = await NFToken.new();
    });

    it('returns correct balanceOf after mint', async () => {
      await nftoken.mint(accounts[0], id1);
      const count = await nftoken.balanceOf(accounts[0]);
      assert.equal(count.toNumber(), 1);
    });
});

建立块菌需要一堆堆样板。我们试试吧。

mkdir tmp && cd tmp

把这个放进你的包.json

{
  "dependencies": {
    "@0xcert/ethereum-erc721": "^2.0.0-rc1",
    "truffle": "^5.0.2",
    "web3": "^1.0.0-beta.37"
  }
}

然后跑 npm install

(cd node_modules/truffle && npm install solc@0.5.1)

现在建立一个松露项目:

mkdir contracts
echo > contracts/Migrations.sol <<EOL
pragma solidity ^0.5.1;
// Boilerplate required, https://github.com/trufflesuite/truffle/issues/1382
contract Migrations {}
EOL
mkdir Migrations
echo > Migrations/1.js <<EOL
// Boilerplate required, https://github.com/trufflesuite/truffle/issues/1382
module.exports = ($)=>{};
EOL

这是你的合同。保存到contracts/nf token-模拟索尔:

pragma solidity 0.5.1;

import "@0xcert/ethereum-erc721/src/contracts/tokens/nf-token.sol";
import "@0xcert/ethereum-erc721/src/contracts/ownership/ownable.sol";

/**
 * @dev This is an example contract implementation of NFToken.
 */
contract NFTokenMock is
  NFToken,
  Ownable
{

  /**
   * @dev Mints a new NFT.
   * @param _to The address that will own the minted NFT.
   * @param _tokenId of the NFT to be minted by the msg.sender.
   */
  function mint(
    address _to,
    uint256 _tokenId
  )
    external
    onlyOwner
  {
    super._mint(_to, _tokenId);
  }    
}

如果你运气好,那就跑: npx truffle test

Using network 'test'.

Compiling ./contracts/Migrations.sol...


  Contract: NFTokenMock
    â correctly checks all the supported interfaces (55ms)
    â correctly approves account (156ms)


  2 passing (420ms)

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