nft数字藏品实盘网站

NFT（Non-Fungible Token）数字藏品已经成为当前区块链世界中的热点，许多人看到它们的巨大潜力和前景。随着越来越多的人开始关注这种数字艺术品，对于如何创建一个能够在真实市场中实现交易的NFT数字藏品实盘网站的需求也越来越高。在本文中，我们将介绍如何使用Solidity和web3.js创建这样一个实战的NFT数字藏品网站。

前置知识

在开始实现一个NFT数字藏品实盘网站之前，我们需要掌握下面的技能：

• Solidity合约编写语言
• Remix开发环境
• Ganache
• Truffle

代码实现

1. 创建一个新的Solidity合约文件NFTDigitalArt.sol，其中包括需要定义的ERC-721标准方法。

//SPDX-License-Identifier: MIT
pragma solidity ^0.8.0;

import "IERC721.sol";
import "IERC721Receiver.sol";
import "SafeMath.sol";
import "Address.sol";
import "ERC165.sol"; 

contract NFTDigitalArt is IERC721, ERC165 {

   using SafeMath for uint256;
   using Address for address;

   bytes4 private constant _ERC721_RECEIVED = 0x150b7a02;

   mapping (uint256 => address) private _tokenOwner;

   mapping (uint256 => address) private _tokenApprovals;

   mapping (address => uint256) private _ownedTokensCount;

   mapping (address => mapping (address => bool)) private _operatorApprovals;

   constructor(string memory nameNFT, string memory symbolNFT) public {
       _nameNFT = nameNFT;
       _symbolNFT = symbolNFT;
   }
   
   string private _nameNFT;
   
   string private _symbolNFT;
   
   uint256[] private _allTokens;
   
   mapping(uint256 => uint256) private _allTokensIndex;
   
   function supportsInterface(bytes4 interfaceId) public override pure returns (bool)
   {
       return interfaceId == 0x80ac58cd || interfaceId == 0x5b5e139f;
   }

  function balanceOf(address owner) public view override returns (uint256) {
      require(owner != address(0), "ERC721: balance query for the zero address");

       return _ownedTokensCount[owner];
  }

  function ownerOf(uint256 tokenId) public view override returns (address) {
      address owner = _