将 ERC20 代币与其他 ERC20 代币交换

Question

我有 2 个 ERC20 代币。 该合约设计为标准 ERC20。 以下是以 2 个令牌为例 -

AUDC --> Contract address: (0xContractAUDC)
         Wallet Address:   (0xWalletAUDC)
DAI  --> Contract address: (0xContractDAI)
         Wallet Address:   (0xWalletDAI)

我想将一些 DAI 从钱包0xWalletDAI到0xWalletAUDC以接收转换后的 AUDC（我有两个钱包的私钥）。

寻求一些帮助以了解如何实施。 如果需要，我会尽力提供更多信息。

我正在使用ethers.js v4.0与区块链交互。

Answer 1

我找到了使用 ethers.js 来实现它的解决方案 -

const ethers = require('ethers');

let provider = ethers.getDefaultProvider();

// WALLETS
const DAIUserWalletObj = new ethers.Wallet(DAIUserPrivateKey, provider);
const AUDCWalletObj = new ethers.Wallet(AUDCPrivateKey, provider);

//CONTRACTS
const contractDAI = new ethers.Contract(DAIContractAddress, DAIContractABI, provider);
constractDAI = contractDAI.connect(DAIUserWalletObj);
const contractAUDC = new ethers.Contract(AUDCContractAddress, AUDCContractABI, provider);
contractAUDC = contractAUDC.connect(AUDCWalletObj);

let overRide = { gasLimit: 7500000 }
let numDAITokens = 20;  // Just for example
let numOfAUDCTokens = 40; // Just for example
const receipt1 = await contractDAI.transfer(AUDCContractAddress, numDAITokens, overRide);
const receipt2 = await contractAUDC.transfer(DAIUserWalletAddress, numOfAUDCTokens, overRide);
console.log(receipt1);
console.log(receipt2);