最近想在Zksync上部署一个erc20代币，发现直接拿原来的合约没办法直接用remix部署。研究了一下发现目前Zksync Era Mainnet的部署流程不同，需要用到hardhat来部署。

参考资料：

Zksync Era Mainnet官方文档的Quickstart

https://era.zksync.io/docs/dev/building-on-zksync/hello-world.html#initializing-the-project-deploying-a-smart-contract

Hardhat官方文档

https://hardhat.org/hardhat-runner/docs/getting-started#overview

环境准备

1.安装yarn或者npm包管理器，最好用yarn

https://yarnpkg.com/getting-started/install

2.zksync链的钱包里要有足够的eth，可以用官方跨链桥跨过去，钱包私钥记好一会代码里会用

https://portal.zksync.io/bridge

3.初始化环境和依赖，下面的步骤是新建文件夹和安装对应的依赖

mkdir greeter-example
cd greeter-example

# For Yarn
yarn init -y
yarn add -D typescript ts-node ethers@^5.7.2 zksync-web3 hardhat @matterlabs/hardhat-zksync-solc @matterlabs/hardhat-zksync-deploy

部署流程

1.新建配置文件，命名为"hardhat.config.ts"。官网的文档只有测试网的配置，我在这里加上了我们要用的主网配置，默认在主网配置

import "@matterlabs/hardhat-zksync-deploy";
import "@matterlabs/hardhat-zksync-solc";

module.exports = {
  zksolc: {
    version: "1.3.5",
    compilerSource: "binary",
    settings: {},
  },
  defaultNetwork: "zkMainnet",

  networks: {
    zkSyncTestnet: {
      url: "https://zksync2-testnet.zksync.dev",
      ethNetwork: "goerli",
      zksync: true,
    },
    zkMainnet: {
      url: "https://zksync2-mainnet.zksync.io",
      ethNetwork: "mainnet",
      zksync: true,
    }
  },
  solidity: {
    version: "0.8.17",
  },
};

2.建两个文件夹 一个叫contracts，一个叫deploy

3.在contracts文件夹下建立Greeter.sol文件，代码如下（如果是部署erc20合约就贴你自己的erc20合约）：

//SPDX-License-Identifier: Unlicense
pragma solidity ^0.8.17;

contract Greeter {
    string private greeting;

    constructor(string memory _greeting) {
        greeting = _greeting;
    }

    function greet() public view returns (string memory) {
        return greeting;
    }

    function setGreeting(string memory _greeting) public {
        greeting = _greeting;
    }
}

4.编译。这一步在国内容易踩坑，原因是solc的代理问题，这里代理上需要用http代理，如果用https代理是下不了的

如果是在国外直接就下面这样编译：

yarn hardhat compile

国内需要挂代理要这样：

http_proxy=http://127.0.0.1:7890 yarn hardhat compile

这个代理的代码根据自己的代理设置来，7890是我自己的端口，实际上要替换成你自己挂的梯子的本地端口

5.在deploy文件夹下创建deploy.ts文件，下面是部署脚本。这里代码我删掉了领取测试网gas的代码，因为主网我们已经跨链过来资金了，主网是领不了gas的，否则会报错。

记得将代码里的替换为自己的私钥 import { Wallet, utils } from "zksync-web3"; import * as ethers from "ethers"; import { HardhatRuntimeEnvironment } from "hardhat/types"; import { Deployer } from "@matterlabs/hardhat-zksync-deploy"; // An example of a deploy script that will deploy and call a simple contract. export default async function (hre: HardhatRuntimeEnvironment) { console.log(`Running deploy script for the Greeter contract`); // Initialize the wallet. const wallet = new Wallet("<WALLET-PRIVATE-KEY>"); // Create deployer object and load the artifact of the contract you want to deploy. const deployer = new Deployer(hre, wallet); const artifact = await deployer.loadArtifact("Greeter"); // Estimate contract deployment fee const greeting = "Hi there!"; const deploymentFee = await deployer.estimateDeployFee(artifact, [greeting]); // Deploy this contract. The returned object will be of a `Contract` type, similarly to ones in `ethers`. // `greeting` is an argument for contract constructor. const parsedFee = ethers.utils.formatEther(deploymentFee.toString()); console.log(`The deployment is estimated to cost ${parsedFee} ETH`); const greeterContract = await deployer.deploy(artifact, [greeting]); //obtain the Constructor Arguments console.log("constructor args:" + greeterContract.interface.encodeDeploy([greeting])); // Show the contract info. const contractAddress = greeterContract.address; console.log(`${artifact.contractName} was deployed to ${contractAddress}`); } 6.部署代码 yarn hardhat deploy-zksync