硬件编译/部署错误

Question

我遵循本教程创建和部署智能契约(https://docs.alchemy.com/alchemy/tutorials/how-to-create-an-nft)，但我不想将它部署在ropstein测试网络上，而是希望将它部署到多边形主板上。我对教程中的步骤所做的唯一改变是将炼金术应用程序从ropstein更改为多边形，并使用它的URL。我遇到的问题是，当我试图编译这个硬帽子配置文件时，我得到了输出"Nothing to编译“。即使我试图运行部署脚本，我也会得到输出"HardhatError: HH700:工件用于合同“"MyNFT”not“。我尝试过不同的时间来重新设计这个项目，但是我仍然会遇到同样的错误。

智能合同文件: MyNFT.sol

//Contract based on https://docs.openzeppelin.com/contracts/3.x/erc721

// SPDX-License-Identifier: MIT

pragma solidity ^0.7.3;


import "@openzeppelin/contracts/token/ERC721/ERC721.sol";

import "@openzeppelin/contracts/utils/Counters.sol";

import "@openzeppelin/contracts/access/Ownable.sol";

contract MyNFT is ERC721,  {

using Counters for Counters.Counter;

Counters.Counter private _tokenIds;

constructor() public ERC721("Metablooms", "MTBS") {}

function mintNFT(address recipient, string memory tokenURI)
    public 
    returns (uint256)
{
    _tokenIds.increment();

    uint256 newItemId = _tokenIds.current();
    _mint(recipient, newItemId);
    _setTokenURI(newItemId, tokenURI);

    return newItemId;
 }
}

硬帽子配置文件：

require('dotenv').config();
require("@nomiclabs/hardhat-ethers");

module.exports = {
    defaultNetwork: "matic",
    networks: {
        hardhat: {},
        matic: {
            url: "https://polygon-mainnet.g.alchemy.com/v2/...the rest of the url",
            accounts: ["my private key"]
        }
    },
    solidity: {
        version: "0.8.0",
        settings: {
            optimizer: {
                enabled: true,
                runs: 200
            }
        }
    },
    paths: {
        sources: "./contracts",
        tests: "./test",
        cache: "./cache",
        artifacts: "./artifacts"
    },
    mocha: {
        timeout: 20000
    }
}

当我要编译时，Cmd输出：

C:\Users\Filippo\my-nft>npx hardhat compile
Nothing to compile

当我尝试运行deploy.js时，Cmd输出：

C:\Users\Filippo\my-nft>npx hardhat run scripts/deploy.js --network matic
HardhatError: HH700: Artifact for contract "MyNFT" not found.
at Artifacts._handleWrongArtifactForContractName (C:\Users\Filippo\my-nft\node_modules\hardhat\src\internal\artifacts.ts:478:11)
at Artifacts._getArtifactPathFromFiles (C:\Users\Filippo\my-nft\node_modules\hardhat\src\internal\artifacts.ts:592:19)
at Artifacts._getArtifactPath (C:\Users\Filippo\my-nft\node_modules\hardhat\src\internal\artifacts.ts:275:17)
at Artifacts.readArtifact (C:\Users\Filippo\my-nft\node_modules\hardhat\src\internal\artifacts.ts:58:26)
at getContractFactory (C:\Users\Filippo\my-nft\node_modules\@nomiclabs\hardhat-ethers\src\internal\helpers.ts:91:22)
at main (C:\Users\Filippo\my-nft\scripts\deploy.js:3:19)

Answer 1

这是对我的帮助:检查文件夹名称。它可以有空间符号

例如：“合同”和“测试”

Answer 2

检查文件夹结构，因为硬帽子要求它的默认结构来编译契约，确保在那里有一个contracts文件夹，并且您的合同在那个文件夹中

希望它能帮上忙