10.区块链系列之hardhat部署抵押赎回Fund合约

本文继续通过笔者学习到的抵押赎回智能合约Fund来进一步学习solidity语言，加深对开发的理解，其中通过storage节省gas是需要重点实践的，毕竟涉及到资产

代码已提交至https://gitee.com/SJshenjian/blockchain/tree/master/hardhat-fund-me-fcc

1. 依赖安装

https://gitee.com/SJshenjian/blockchain.git
cd hardhat-fund-me-fcc
yarn

若出现如下错误

fatal: unable to access 'https://github.com/ethereumjs/ethereumjs-abi.git/': OpenSSL SSL_connect: SSL_ERROR_SYSCALL in connection to github.com:443
info Visit https://yarnpkg.com/en/docs/cli/install for documentation about this command.

在yarn.lock中ethereumjs-abi指定具体版本再次执行yarn即可

修改前

eth-sig-util@^1.4.2:
  version "1.4.2"
  resolved "https://registry.yarnpkg.com/eth-sig-util/-/eth-sig-util-1.4.2.tgz#8d958202c7edbaae839707fba6f09ff327606210"
  integrity sha1-jZWCAsftuq6Dlwf7pvCf8ydgYhA=
  dependencies:
    ethereumjs-abi "git+https://github.com/ethereumjs/ethereumjs-abi.git"
    ethereumjs-util "^5.1.1"

修改后

eth-sig-util@^1.4.2:
  version "1.4.2"
  resolved "https://registry.yarnpkg.com/eth-sig-util/-/eth-sig-util-1.4.2.tgz#8d958202c7edbaae839707fba6f09ff327606210"
  integrity sha1-jZWCAsftuq6Dlwf7pvCf8ydgYhA=
  dependencies:
    ethereumjs-abi "0.6.8"
    ethereumjs-util "^5.1.1"

2. 将.env环境中配置修改为自己的配置

PRIVATE_KEY=
GOERLI_RPC_URL=
ETHERSCAN_API_KEY=
COINMARKETCAP_API_KEY=

3. 部署合约

执行yarn hardhat deploy部署合约可看到本地部署成功

4. 代码特别注意事项

• 文件deploy/00-deploy-mocks.js只有是本地网络才会进行部署
• 文件deploy/99-deploy-storage-fun.js示例了storage部署，img中有具体变量存储细节
• FundMe.sol中有cheaperWithdraw与Withdraw两个函数，注意其区别
• test部分较之前比较全面，建议执行遍测试加深理解
• 其他细节自行学习研究，如有更多注意事项欢迎留言

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