1. 项目准备

1. 安装ether.js

npm install --save ethers

引入ether.js:的三种方法

• es3:

var ethers = require(‘ethers’);

• es5/es6

const ethers = require(‘ethers’);

• javascript/typescript es6

import ethers from ‘ethers’;

2. 钱包相关概念

这里默认为你已经了解 地址、密码、私钥、助记词、Keystore 之间的关系,所以不再过多介绍,只列出他们之间的关联:

地址 = 银行卡号密码 = 银行卡密码私钥 = 银行卡号+密码助记词 = 银行卡号+密码Keystore = 加密私钥Keystore + 密码 = 私钥

3.随机创建一个钱包

使用到的ethers的Wallet类:

ethers.Wallet.createRandom()

createRandom 返回一个带有随机私钥的新钱包，由加密安全的熵源生成。如果当前环境没有安全的熵源，则会抛出错误。
使用此方法创建的钱包将具有助记词

  createNewWallet() {let walletRandom = ethers.Wallet.createRandom()// 钱包助记词对象let mnemonic = walletRandom.mnemonic//钱包助记词单词let phrase = mnemonic.phrase//path: "m/44'/60'/0'/0/0",let path = mnemonic.path//钱包地址let address = walletRandom.address//钱包公钥let publicKey = walletRandom.publicKey//钱包私钥let privateKey = walletRandom.privateKey//通过用户设置的密码生成keystore文件let password = "123456"walletRandom.encrypt(password).then((keystory_string) => {let keystory_json = JSON.parse(keystory_string)//钱包的keystore字符串this.keystory = keystory_stringconsole.log(keystory_json)})//可以通过AES对称加密把钱包的助记词加密存储在本地let encryptPassword = "1234qwer"let encryptedPhrase = encryption(phrase, encryptPassword)console.log('加密后的助记词:', encryptedPhrase)let decryptedPhrase = decryption(encryptedPhrase, encryptPassword)console.log('解密后的助记词:', decryptedPhrase)}

import * as CryptoJS from 'crypto-js'//数据对称加密
function encryption(data, password) {let encrypted = CryptoJS.AES.encrypt(data, password);return encrypted.toString()
}//数据解密
function decryption(encrypted, password) {let decrypted = CryptoJS.AES.decrypt(encrypted, password);return decrypted.toString(CryptoJS.enc.Utf8);
}

4.根据助记词导入钱包

  ethers.Wallet.fromMnemonic( mnemonic [ , path , [ wordlist ] ] ) ⇒ Wallet

从助记短语中创建实例。

如果没有指定path，则使用以太坊的默认path路径(如m/44’/60’/0’/0/0).

如果不指定wordlist，则使用English Wordlist。

  async createWalletByPhrase() {//默认路径let path = ethers.utils.defaultPath//要导入的钱包助记词let phrase ='able fee damage express dilemma visit fine claim similar attract awkward market'let mnemonic = ethers.Wallet.fromMnemonic(phrase)//钱包私钥let privateKey = mnemonic.privateKey//通过钱包私钥创建钱包实例let wallet = new ethers.Wallet(privateKey)//钱包公钥let publicKey = wallet.publicKey//钱包地址let address = wallet.address//通过用户设置的密码生成keystore文件let password = "123456"wallet.encrypt(password).then((keystory_string) => {let keystory_json = JSON.parse(keystory_string)let keystory = keystory_stringconsole.log(keystory_json)})}

5.根据keystore导入钱包

ethers.Wallet.fromEncryptedJson( json , password [ , progress ] ) ⇒ Promise< Wallet >source

从加密的JSON钱包创建一个实例。

如果提供了进度，它将在解密期间被调用，其值介于0到1之间，表示一个完成进度。

  createWalletByKeystory() {//要导入的钱包keystorelet keystory ='{"address":"df9e902814baba3ddc6b4a1ac9db11bc79eda07f","id":"60db3db5-ef64-400a-b25e-3615a9bdfa24","version":3,"crypto":{"cipher":"aes-128-ctr","cipherparams":{"iv":"f4c7ece791d112dc408537203aa2bb10"},"ciphertext":"acba3333e3d7078e2186ebd561c28bf0e4a8c105e4b1eec40bec20616441cc31","kdf":"scrypt","kdfparams":{"salt":"f1e8acd43868559c1ecda1c9b31489efd12f6c7c9302710b957a3b779dd6ec54","n":131072,"dklen":32,"p":1,"r":8},"mac":"e466473ae761f98b1f26354e27305ce23e41b5d5c8a5674b65675bdfbf848718"},"x-ethers":{"client":"ethers.js","gethFilename":"UTC--2023-03-25T03-36-38.0Z--df9e902814baba3ddc6b4a1ac9db11bc79eda07f","mnemonicCounter":"e4482220566b9a9f9d821c1352d1708f","mnemonicCiphertext":"7357682acae64479641611e17e1c6473","path":"m/44'/60'/0'/0/0","locale":"en","version":"0.1"}}'//改keystore创建时使用的密码let password = "123456"ethers.Wallet.fromEncryptedJson(keystory, password).then((wallet) => {console.log('wallet实例:', wallet)//钱包地址let address = wallet.address//钱包公钥let publicKey = wallet.publicKey//钱包私钥let privateKey = wallet.privateKey//默认的路径let path = ethers.utils.defaultPath})}

6.签名转账

  async sendTransaction() {//ETH// let network = 'goerli'// let contractAddress = ''//Polygon// let network = 'maticmum'// let contractAddress = ''//BSC// let network = 'https://bsc-dataseed.binance.org/'let network = 'https://data-seed-prebsc-1-s1.binance.org:8545/'let contractAddress = ''//使用Infura作为RPC使用//let projectId = ''// let provider = new ethers.providers.InfuraProvider(network, projectId)let provider = new ethers.providers.JsonRpcProvider(network);let privateKey = '0x0fb9146e20a3bd3497b47de967316c8aa7f83818ddc62429a24774f0df1f8065'let wallet = new ethers.Wallet(privateKey, provider)// let balance = await wallet.getBalance('latest')// console.log('余额:', balance)// console.log('余额:', ethers.utils.formatEther(balance))// console.log(await wallet.getChainId())// return/**//ETH转账let tx = {to: '',value: ethers.utils.parseEther('0.001'),chainId: ethers.BigNumber.from('5').toHexString()}let res = await wallet.sendTransaction(tx)console.log(res)*//***//使用signers进行ERC20转账let contract = new ethers.Contract(contractAddress, GBK.abi, wallet)console.log(contract)let balance = await contract.balanceOf(wallet.address)balance = ethers.utils.formatEther(balance)console.log(balance)let res = await contract.transfer('', ethers.utils.parseUnits('1'))console.log(res)*/}