区块链开发：JS/TS本地|项目环境搭建

本地环境搭建

VSCode Solidity扩展

添加如下两种扩展到VSCode中

全局安装Solc,corepack

Solc用于编译智能合约(.sol)

npm install -g solc
npm install -g corepack
solcjs --version
corepack --version

VSCode配置本地Solc

打开settings搜索Solidity，设置编译版本
C:\Users\用户目录\.vscode\extensions\juanblanco.solidity-0.0.165\node_modules\solc\soljson.js

修改默认编译为localFile

安装Ganache搭建JS虚拟环境

地址：https://trufflesuite.com/ganache/
官网下载速度很慢，推荐挂个，或者去Github下
Github：https://github.com/trufflesuite/ganache-ui

启动

项目测试

安装依赖

安装solc，ethers

npm i solc -S
npm i ethers@5.7.2 -S
npm i --save-dev @types/fs-extra
npm i typescript -S
npm i ts-node -S
npm i fs-extra -S

编写代码

其中rpc地址是从Ganache中来的

部署合约test_blockchain.ts

import { ethers } from "ethers";
import { readFileSync } from "fs-extra";

// main fn
const main = async () => {
  // http://127.0.0.1:7545
  // init rpc provider
  const provider = new ethers.providers.JsonRpcProvider(
    "http://127.0.0.1:7545"
  );

  // your wallet
  // Get from Ganache
  // PrimaryKey :  ...
  // Address : ...
  // Not recommended you use primary key here
  // But this just a test
  const primary_key: string =
    "0x290042e98e1afdbe0f88d2e1146bf7116a1793aa9fa1f315264e5319247bc6ae";
  const wallet = new ethers.Wallet(primary_key, provider);
  const abi = readFileSync(
    "src/binary/src_smart_contract_SimpleStorage_sol_SimpleStorage.abi",
    "utf8"
  );
  const binary = readFileSync(
    "src/binary/src_smart_contract_SimpleStorage_sol_SimpleStorage.bin",
    "utf8"
  );

  const contractFactory = new ethers.ContractFactory(abi, binary, wallet);

  //deploy
  const contract = await contractFactory.deploy({ gasLimit: 3000000 });
};

const methods = {
  main,
};

const linearRunner = () => {
  methods
    .main()
    .then(() => {
      // exit program
      process.exit(0);
    })
    .catch((e) => {
      console.error(e);
      process.exit(1);
    });
};

linearRunner();

设置Script

这里的compile用来编译solidity写的智能合约，deploy则是进行合约部署

{
  "dependencies": {
    "ethers": "^5.7.2",
    "fs-extra": "^11.1.1",
    "solc": "^0.8.20",
    "ts-node": "^10.9.1",
    "typescript": "^5.1.6"
  },
  "scripts": {
    "compile": "solcjs --bin --abi --include-path node_modules/ --base-path . -o ./src/binary src/smart_contract/SimpleStorage.sol",
    "deploy": "ts-node src/test_blockchain.ts"
  },
  "devDependencies": {
    "@types/fs-extra": "^11.0.1"
  }
}

部署查看

报错说明

1. Error：missing revert data

这个错误起初我以为只出现6+的版本，去Github上查看无果，别人也遇到这个问题，解决的方法最后在我修改到5.7.2版本后解决，但是这不是正确的解决方法而是在deploy的时候添加Gas限制以保证Gas足够就解决了，无论6+版本还是5.7.2都OK

const contract = await contractFactory.deploy({ gasLimit: 3000000 });

2.Error: could not coalesce error

出现 “could not coalesce error” 错误通常表示在处理交易期间发生了无法合并的错误，但从结果看智能合约确实被部署了。