使用ethers.js部署Solidity智能合约

2023-02-24 10:39:42

    ethers.js是一个非常精简的以太坊操作库,它包含如下四个模块:
        Ethers.provider
        Ethers.contract
        Ethers.utils
        Ethers.wallets
    其中,Ethers.provider负责与以太坊节点进行连接,查询交易、广播交易,获取账户余额等功能;
    Ethers.contract负责与智能合约进行交互,包括部署合约、监听合约里的事件、获取合约里的信息,调用合约里的函数等功能;
    Ethers.utils是一个工具库,主要用于处理输入、输出数据,数据的类型与格式转换;
    Ethers.wallets主要用于创建新钱包,连接或切换现有钱包,以及对交易进行签名等功能。
    下面,介绍使用Ethers.js来部署智能合约。

1、新建一个工程sendtokenone

mkdir sendtokenone
cd sendtokenone
npm init -y
truffle init

2、修改package.json并安装依赖包

    a)修改后的package.json文件如下:
    //package.json

{
  "name": "sendtokenone",
  "version": "1.0.0",
  "description": "ethers.js部署合约",
  "main": "",
  "scripts": {
    "test": "echo \"Error: no test specified\" && exit 1"
  },
  "keywords": [],
  "author": "",
  "license": "ISC",
  "dependencies": {
    "@openzeppelin/contracts": "^3.4",
    "@truffle/hdwallet-provider": "^1.5.0",
    "bignumber": "^1.1.0",
    "bignumber.js": "^8.1.1",
    "chai": "^4.2.0",
    "chai-as-promised": "^7.1.1",
    "eslint": "^5.15.0",
    "ethereumjs-tx": "^1.3.7",
    "ethers": "^5.4.7",
    "request": "^2.88.2",
    "web3": "^1.3.0"
  },
  "devDependencies": {
    "@babel/core": "^7.12.3",
    "@babel/preset-env": "^7.12.1",
    "ethereumjs-abi": "^0.6.8"
  }
}

    b) 安装依赖包

npm install

3、新建智能合约

3.1 创建一个EventValue.sol合约

    在sendtokenone/contacts目录,创建一个创建一个EventValue.sol合约,内容如下:
    // EventValue.sol

// SPDX-License-Identifier: MIT
pragma solidity ^0.6.0;

contract EventValue {
    event ValueChanged(address indexed author,uint oldValue,uint newValue);
    uint _value;

    constructor(uint value) public {
        uint tmp = _value;
        _value = value;
        emit ValueChanged(msg.sender, tmp, value);
    }
    function getValue() view public returns (uint) {
        return _value;
    }
    function setValue(uint value) public {
        uint tmp = _value;
        _value = value;
        emit ValueChanged(msg.sender, tmp, value);
    }
}

3.2 编写部署脚本

    新建一个文件夹名称为migDeploy,然后在这个文件夹里,创建部署脚本1_deploy_event.js

mkdir migDeploy
cd migDeploy
touch 1_deploy_event.js

1_deploy_event.js的内容如下:
// sendtokenone/migDeploy/1_deploy_event.js

const {ethers} = require("ethers")
const fs = require('fs')

let provider = new ethers.providers.JsonRpcProvider('http://localhost:8545')

function getHexString(prikeyPath) {
    const privKeyFile = fs.readFileSync(prikeyPath).toString().trim();
    const privKey = new Buffer.from(privKeyFile, 'hex');    
    return privKey
}

// var privKey  = getHexString(".secret")
var privKey = '0x403d...23d5'
let wallet = new ethers.Wallet(privKey,provider)

var jsonStr = fs.readFileSync('./build/contracts/EventValue.json')
var jsonInfo = JSON.parse(jsonStr)
var jsonAbi  = jsonInfo.abi
var bytecode = jsonInfo.bytecode

async function deployContract(abi,bytecode,wallet) {
    let factory = new ethers.ContractFactory(abi,bytecode,wallet)
    let contractObj = await factory.deploy(100)
    console.log('contractAddress=',contractObj.address)
    console.log('deploy txHash=',contractObj.deployTransaction.hash)

    await contractObj.deployed()   
}

deployContract(jsonAbi,bytecode,wallet)



3.3 编译合约

    a)设置ganache的IP为127.0.0.1,端口为8545
    b) 在truffle-config.js里,开启development网段、solc指定版本为0.6.6,具体如下:
    // truffle-config.js

module.exports = {
  networks: {

    development: {
     host: "127.0.0.1",     // Localhost (default: none)
     port: 8545,            // Standard Ethereum port (default: none)
     network_id: "*",       // Any network (default: none)
    },

  },

  // Set default mocha options here, use special reporters etc.
  mocha: {
    // timeout: 100000
  },

  // Configure your compilers
  compilers: {
    solc: {
      version: "0.6.6",    // Fetch exact version from solc-bin (default: truffle's version)
      // docker: true,        // Use "0.5.1" you've installed locally with docker (default: false)
      // settings: {          // See the solidity docs for advice about optimization and evmVersion
      //  optimizer: {
      //    enabled: false,
      //    runs: 200
      //  },
      //  evmVersion: "byzantium"
      // }
    }
  },

};

    打开一个黑框框控制台,使用truffle编译该合约

cd sendtokenone
truffle console
compile

3.4 部署合约

    在黑框框终端里,输入如下命令,即可部署合约

cd sendtokenone
node migDeploy\1_deploy_event.js

    效果如下:

图(1) 使用ether.js部署合约

    可以打印合约地址和txHash,说明合约部署成功。
  • 作者:sanqima
  • 原文链接:https://blog.csdn.net/sanqima/article/details/120930477
    更新时间:2023-02-24 10:39:42