# Zksync Era Mainnet 使用Hardhat部署智能合约

By [cutepanda](https://paragraph.com/@catpad) · 2023-03-28

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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](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](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](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](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

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*Originally published on [cutepanda](https://paragraph.com/@catpad/zksync-era-mainnet-hardhat)*