將 ERC20 代幣與其他 ERC20 代幣交換

Question

我有 2 個 ERC20 代幣。 該合約設計為標准 ERC20。 以下是以 2 個令牌為例 -

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

我想將一些 DAI 從錢包0xWalletDAI到0xWalletAUDC以接收轉換后的 AUDC（我有兩個錢包的私鑰）。

尋求一些幫助以了解如何實施。 如果需要，我會盡力提供更多信息。

我正在使用ethers.js v4.0與區塊鏈交互。

Answer 1

我找到了使用 ethers.js 來實現它的解決方案 -

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);