以太坊Solidity如何实现海量空投代币？

区块链技术 6 4 月 22, 2024 0 区块链315

## 1\. 摘要通证token项目启动时，短期内繁荣生态，要舍得给粉丝们打币，把利益分出去。本文聚焦在技术层面，实现如何快速完成TOKEN海量空投，既要节约时间，又要节省TOKEN费用。 ## 2.代码分析话不多说，直接上代码。 ``` pragma solidity ^0.4.18; contract Ownable { address public owner; function Ownable() public { owner = msg.sender; } modifier onlyOwner() { require(msg.sender == owner); _; } } interface Token { function balanceOf(address _owner) public constant returns (uint256 ); function transfer(address _to, uint256 _value) public ; event Transfer(address indexed _from, address indexed _to, uint256 _value); } contract Airdropper is Ownable { function AirTransfer(address[] memory _recipients, uint _values, address _tokenAddress) onlyOwner public returns (bool) { require(_recipients.length > 0); Token token = Token(_tokenAddress); for(uint j = 0; j < _recipients.length; j++){ token.transfer(_recipients[j], _values); } return true; } function withdrawalToken(address _tokenAddress) onlyOwner public { Token token = Token(_tokenAddress); token.transfer(owner, token.balanceOf(this)); } } ``` **说明** （1）定义interface Token接口，可以适配任何支持ERC20的代币。（2）contract Airdropper is Ownable，对应空投合约函数，包含2个核心函数： AirTransfer 空投函数：AirTransfer(address[] memory _recipients, uint _values, address _tokenAddress) 入参分别是接受地址，对应的数量，目标ERC20的合约地址。 withdrawalToken 回收函数：withdrawalToken(address _tokenAddress) 用于把未发送的token回收管理账号 ## 3.测试测试流程包括3步： (1) 部署空投合约； (2) 转账足够数量的ERC20代币到空投合约地址； (3) 组装空投接受地址和其他入参，执行；例如：["0xbCBE3593561dF94Ed18c13dA1877db3857bE4402","0xEbcA76f064cd01fDb699051c291559A697812B18","0x5fa20E0A24b72A85630200A58651EB777f8d4097","0x1ed80b85C0ecAafbFCC45249922a1096Dd92460B","0x97dF0DcCd22651c20A0511422C6d995Bf937973A","0xd201D869D0A006901a70a24b91946E19b5649F73","0x219f9C9e87085084f9148B6cFB51A586D7EFDcdb","0x0bd2e92a72d9a7c71c03a3eCEd4B563ACE6405F3","0xab19520a874061f87132128E590822B051bF75b9","0xF7CfAA4201C81A0CbB92424d70Dd14031350c31e"],100000000000000000000,"0x14780cdc560680d2cea42459fe824aad277298f1" (4) 回收未打完的TOKEN回管理账号； ## 4.启发问题 ### （1）如何快速组装打币目标地址数组列表呢？我们拿到的地址一般是XLS表格形式给出的，举例来说1000个，如何快速把这些列表组装成solidity的数组呢？["a","b","c"]样子，组装1000个也挺费时间的，有没有快速的批量方法呢？ ### （2）如果真的是10万级别的空投地址，如何实现呢？如果空投地址很大，例如是10万级别的，而以太坊的GAS费是受限的，800万到顶。这时候需要切分成多次打币。建议采用WEB3J调用实现，通过程序把XLS导入目标地址进行切分后再逐步调用程序。辉哥就点到这儿了，需要打币合作，实现多快好省，欢迎加入辉哥的知识星球联系辉哥微信。本工程的源码也公布在此： **加盟连接** ： [https://t.zsxq.com/EiyNbqB](https://t.zsxq.com/EiyNbqB)

1. 摘要

通证token项目启动时，短期内繁荣生态，要舍得给粉丝们打币，把利益分出去。本文聚焦在技术层面，实现如何快速完成TOKEN海量空投，既要节约时间，又要节省TOKEN费用。

2.代码分析

话不多说，直接上代码。

pragma solidity ^0.4.18;

contract Ownable {
  address public owner;

  function Ownable() public {
    owner = msg.sender;
  }

  modifier onlyOwner() {
    require(msg.sender == owner);
    _;
  }
}

interface Token {
  function balanceOf(address _owner) public constant returns (uint256 );
  function transfer(address _to, uint256 _value) public ;
  event Transfer(address indexed _from, address indexed _to, uint256 _value);
}

contract Airdropper is Ownable {

    function AirTransfer(address[] memory _recipients, uint _values, address _tokenAddress) onlyOwner public returns (bool) {
        require(_recipients.length > 0);

        Token token = Token(_tokenAddress);

        for(uint j = 0; j &lt; _recipients.length; j++){
            token.transfer(_recipients[j], _values);
        }

        return true;
    }

     function withdrawalToken(address _tokenAddress) onlyOwner public { 
        Token token = Token(_tokenAddress);
        token.transfer(owner, token.balanceOf(this));
    }

}

说明（1）定义interface Token接口，可以适配任何支持ERC20的代币。（2）contract Airdropper is Ownable，对应空投合约函数，包含2个核心函数： AirTransfer 空投函数：AirTransfer(address[] memory _recipients, uint _values, address _tokenAddress) 入参分别是接受地址，对应的数量，目标ERC20的合约地址。 withdrawalToken 回收函数：withdrawalToken(address _tokenAddress) 用于把未发送的token回收管理账号

3.测试

测试流程包括3步： (1) 部署空投合约； (2) 转账足够数量的ERC20代币到空投合约地址； (3) 组装空投接受地址和其他入参，执行；例如：["0xbCBE3593561dF94Ed18c13dA1877db3857bE4402","0xEbcA76f064cd01fDb699051c291559A697812B18","0x5fa20E0A24b72A85630200A58651EB777f8d4097","0x1ed80b85C0ecAafbFCC45249922a1096Dd92460B","0x97dF0DcCd22651c20A0511422C6d995Bf937973A","0xd201D869D0A006901a70a24b91946E19b5649F73","0x219f9C9e87085084f9148B6cFB51A586D7EFDcdb","0x0bd2e92a72d9a7c71c03a3eCEd4B563ACE6405F3","0xab19520a874061f87132128E590822B051bF75b9","0xF7CfAA4201C81A0CbB92424d70Dd14031350c31e"],100000000000000000000,"0x14780cdc560680d2cea42459fe824aad277298f1" (4) 回收未打完的TOKEN回管理账号；