编写和部署一个NFT合约代码 https://ethereum.org/en/developers/tutorials/how-to-write-and-deploy-an-nft/ // SPDX-License-Identifier: MIT pragma solidity ^0.8.0; import "@openzeppelin/contracts/token/ERC721/ERC721.sol"; import "@openzeppelin/contracts/utils/Counters.sol";