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ERC721 mint()返回“無效地址”錯誤

[英]ERC721 mint() returns 'invalid address' error

我正在嘗試使用JavaScript在專用網絡中創建ERC721令牌。

我可以通過松露控制台創建ERC721令牌,但通過JavaScript失敗。

松露(開發)> myToken.mint()

{tx:'0xc1dc87a29fbe200ff180df67c01e454818feee433b13331c4ea9268624db​​077b',收據:{blockHash:'0xf2ad0c70cda0efca3460ec74866ed61e77647493feb5edf2f81ad2a038c69956',塊編號:251

錯誤消息是

'UnhandledPromiseRejectionWarning:未處理的承諾拒絕(拒絕ID:2):錯誤:無效的地址'

我的代碼如下:

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之前我需要一些東西嗎?

更新的代碼

這是與您的代碼一起使用的更新測試。

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);
    });
});

試試吧

設置松露需要一堆樣板。 讓我們嘗試一下。

mkdir tmp && cd tmp

然后將其放入您的package.json

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

並運行npm install 我們還需要一個特殊的技巧來使用所需的Solidity編譯器版本(0.5.1)來獲得Truffle:

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

現在設置一個松露項目:

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

這是您的合同。 將其保存到contracts / nf-token-mock.sol:

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);
  }    
}

並將以上測試文件保存到test / go.js。

如果幸運的話,請運行: npx truffle test ,您應該會看到

Using network 'test'.

Compiling ./contracts/Migrations.sol...


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


  2 passing (420ms)

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