Ethers极简入门: 16. 批量归集
我最近在重新学ethers.js
,巩固一下细节,也写一个WTF Ethers极简入门
,供小白们使用。
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所有代码和教程开源在github: github.com/WTFAcademy/WTF-Ethers
这一讲,我们介绍如何使用ethers.js
将多个钱包的ETH
和代币归集到一个钱包中。
批量归集
在链上交互、撸毛之后,就需要将多个钱包的资产进行归集管理。你可以用HD钱包或者保存多份密钥的方式操作多个钱包,然后用ethers.js
脚本完成归集。下面我们分别示范归集ETH
(原生代币)和WETH
(ERC20代币)。
创建
provider
和wallet
,其中wallet
是接收资产的钱包。// 准备 alchemy API 可以参考https://github.com/AmazingAng/WTF-Solidity/blob/main/Topics/Tools/TOOL04_Alchemy/readme.md
const ALCHEMY_GOERLI_URL = 'https://eth-goerli.alchemyapi.io/v2/GlaeWuylnNM3uuOo-SAwJxuwTdqHaY5l';
const provider = new ethers.JsonRpcProvider(ALCHEMY_GOERLI_URL);
// 利用私钥和provider创建wallet对象
const privateKey = '0x21ac72b6ce19661adf31ef0d2bf8c3fcad003deee3dc1a1a64f5fa3d6b049c06'
const wallet = new ethers.Wallet(privateKey, provider)声明WETH合约。
// WETH的ABI
const abiWETH = [
"function balanceOf(address) public view returns(uint)",
"function transfer(address, uint) public returns (bool)",
];
// WETH合约地址(Goerli测试网)
const addressWETH = '0xB4FBF271143F4FBf7B91A5ded31805e42b2208d6' // WETH Contract
// 声明WETH合约
const contractWETH = new ethers.Contract(addressWETH, abiWETH, wallet)创建
HD
钱包,用于管理多个钱包。console.log("\n1. 创建HD钱包")
// 通过助记词生成HD钱包
const mnemonic = `air organ twist rule prison symptom jazz cheap rather dizzy verb glare jeans orbit weapon universe require tired sing casino business anxiety seminar hunt`
const hdNode = ethers.HDNodeWallet.fromPhrase(mnemonic)
console.log(hdNode);通过
HD
钱包衍生20
个钱包,这些钱包上需要有资产。const numWallet = 20
// 派生路径:m / purpose' / coin_type' / account' / change / address_index
// 我们只需要切换最后一位address_index,就可以从hdNode派生出新钱包
let basePath = "m/44'/60'/0'/0";
let wallets = [];
for (let i = 0; i < numWallet; i++) {
let hdNodeNew = hdNode.derivePath(basePath + "/" + i);
let walletNew = new ethers.Wallet(hdNodeNew.privateKey);
wallets.push(walletNew);
console.log(walletNew.address)
}
// 定义发送数额
const amount = ethers.parseEther("0.0001")
console.log(`发送数额:${amount}`)读取一个地址的ETH和WETH余额。
console.log("\n3. 读取一个地址的ETH和WETH余额")
//读取WETH余额
const balanceWETH = await contractWETH.balanceOf(wallets[19])
console.log(`WETH持仓: ${ethers.formatEther(balanceWETH)}`)
//读取ETH余额
const balanceETH = await provider.getBalance(wallets[19])
console.log(`ETH持仓: ${ethers.formatEther(balanceETH)}\n`)利用钱包类的
sendTransaction()
发送交易,归集每个钱包中的ETH
。// 6. 批量归集钱包的ETH
console.log("\n4. 批量归集20个钱包的ETH")
const txSendETH = {
to: wallet.address,
value: amount
}
for (let i = 0; i < numWallet; i++) {
// 将钱包连接到provider
let walletiWithProvider = wallets[i].connect(provider)
var tx = await walletiWithProvider.sendTransaction(txSendETH)
console.log(`第 ${i+1} 个钱包 ${walletiWithProvider.address} ETH 归集开始`)
}
await tx.wait()
console.log(`ETH 归集结束`)将
WETH
合约连接到新的钱包,然后调用transfer()
方法归集每个钱包的WETH
。for (let i = 0; i < numWallet; i++) {
// 将钱包连接到provider
let walletiWithProvider = wallets[i].connect(provider)
// 将合约连接到新的钱包
let contractConnected = contractWETH.connect(walletiWithProvider)
var tx = await contractConnected.transfer(wallet.address, amount)
console.log(`第 ${i+1} 个钱包 ${wallets[i].address} WETH 归集开始`)
}
await tx.wait()
console.log(`WETH 归集结束`)读取一个地址在归集后的ETH和WETH余额,可以看到
ETH
和WETH
余额减少,归集成功!console.log("\n6. 读取一个地址在归集后的ETH和WETH余额")
// 读取WETH余额
const balanceWETHAfter = await contractWETH.balanceOf(wallets[19])
console.log(`归集后WETH持仓: ${ethersfromPhrase.formatEther(balanceWETHAfter)}`)
// 读取ETH余额
const balanceETHAfter = await provider.getBalance(wallets[19])
console.log(`归集后ETH持仓: ${ethersfromPhrase.formatEther(balanceETHAfter)}\n`)
总结
这一讲,我们介绍了批量归集,并用ethers.js
脚本将20
个钱包的ETH
和WETH
归集到一个钱包中。