Web3学习之使用Foundry开发部署和开源ERC20合约Foundry是一个用于以太坊应用程序开发的快速、可移植和模块化的工具包，用Rust编写。Foundry由以下部分组成：Forge：以太坊测试框架（类似于Truffle、Hardhat和DappTools）。Cast：与EVM智

# Web3学习之使用Foundry开发部署和开源ERC20合约

Foundry 是一个用于以太坊应用程序开发的快速、可移植和模块化的工具包，用Rust编写。

Foundry由以下部分组成：

- **Forge**：以太坊测试框架（类似于Truffle、Hardhat和DappTools）。
- **Cast**：与EVM智能合约、发送交易和获取链数据交互的瑞士军刀。
- **Anvil**：类似于Ganache、Hardhat Network的本地以太坊节点。
- **Chisel**：快速、实用且详细的solidity REPL。

## Foundry

**Foundry is a blazing fast, portable and modular toolkit for Ethereum application development written in Rust.**

Foundry consists of:

- **Forge**: Ethereum testing framework (like Truffle, Hardhat and DappTools).
- **Cast**: Swiss army knife for interacting with EVM smart contracts, sending transactions and getting chain data.
- **Anvil**: Local Ethereum node, akin to Ganache, Hardhat Network.
- **Chisel**: Fast, utilitarian, and verbose solidity REPL.

## Documentation

<https://book.getfoundry.sh/>

## Usage

### Build

```shell
forge build
```

### Test

```shell
forge test
```

### Format

```shell
forge fmt
```

### Gas Snapshots

```shell
forge snapshot
```

### Anvil

```shell
anvil
```

### Deploy

```shell
forge script script/Counter.s.sol:CounterScript --rpc-url <your_rpc_url> --private-key <your_private_key>
```

### Cast

```shell
cast <subcommand>
```

### Help

```shell
forge --help
anvil --help
cast --help
```

## 实操

### 安装Foundry

- <https://book.getfoundry.sh/getting-started/installation>

```shell
curl -L https://foundry.paradigm.xyz | bash

foundryup
```

### 创建项目

```shell
forge init MyToken
cd MyToken
```

### 编写合约

```solidity
// SPDX-License-Identifier: MIT
pragma solidity 0.8.20;

import "@openzeppelin/contracts/token/ERC20/ERC20.sol";

contract MyToken is ERC20 {
    constructor(
        string memory name_,
        string memory symbol_
    ) ERC20(name_, symbol_) {
        _mint(msg.sender, 1e10 * 1e18);
    }
}

```

### 安装依赖

```shell
forge install OpenZeppelin/openzeppelin-contracts
forge install OpenZeppelin/openzeppelin-contracts --no-commit
```

### 依赖映射

```shell
forge remappings > remappings.txt
```

### 编写测试脚本

```solidity
// SPDX-License-Identifier: UNLICENSED
pragma solidity ^0.8.13;

import {Test, console} from "forge-std/Test.sol";
import {MyToken} from "../src/MyToken.sol";

contract MyTokenTest is Test {
    MyToken public mytoken;

address public owner = address(0x123);
    address public alice = address(0x456);
    uint256 public totalSupply = 1e10 * 1e18;

function setUp() public {
        mytoken = new MyToken("MyToken", "MTK");
        console.log("Setup complete");
    }

function testBalance() public view {
        assertEq(mytoken.balanceOf(owner), 0);
        assertEq(mytoken.balanceOf(alice), 0);
        assertEq(mytoken.balanceOf(address(this)), totalSupply);
    }

function testTransfer() public {
        mytoken.transfer(alice, 100);
        assertEq(mytoken.balanceOf(owner), 0);
        assertEq(mytoken.balanceOf(alice), 100);
    }

```

### 构建与测试

```shell
forge build
forge test -vvvv
```

### 编写部署脚本

```solidity
// SPDX-License-Identifier: UNLICENSED
pragma solidity ^0.8.13;

import {Script, console} from "forge-std/Script.sol";
import {MyToken} from "../src/MyToken.sol";

contract MyTokenScript is Script {
    MyToken public mytoken;

function setUp() public {}

function run() public {
        uint256 deployerPrivateKey = vm.envUint("PRIVATE_KEY");
        vm.startBroadcast(deployerPrivateKey);

mytoken = new MyToken("MyToken", "MTK");

console.log("MyToken deployed to:", address(mytoken));

vm.stopBroadcast();
    }
}

```

### 部署合约

#### 1. 创建 .env 文件

```shell
touch .env
```

文件内容

```shell
SEPOLIA_RPC_URL=
PRIVATE_KEY=
ETHERSCAN_API_KEY=
```

#### 2. 修改 foundry.toml 文件，增加如下内容

```toml
solc = "0.8.20"
[rpc_endpoints]
sepolia = "${SEPOLIA_RPC_URL}"

[etherscan]
sepolia = { key = "${ETHERSCAN_API_KEY}" }
```

#### 3. 部署合约

```shell
source .env
forge script --chain sepolia script/MyToken.s.sol --rpc-url $SEPOLIA_RPC_URL --broadcast --verify -vvvv
```

#### 4. 报错解决

问题一：

##### 报错`error: a value is required for '--fork-url <URL>' but none was supplied` 原因：.env 文件中环境变量等号后有空格`SEPOLIA_RPC_URL= http...`

![image.png](https://img.learnblockchain.cn/attachments/2024/07/n4Lw1HOL668e8f2b850de.png)

解决： 删除 .env 文件中环境变量等号后的空格
<https://github.com/Cyfrin/foundry-full-course-cu/discussions/216>

问题二：
报错：`script failed: failed parsing $PRIVATE_KEY as type`uint256`: missing hex prefix ("0x") for hex string`

![image-1.png](https://img.learnblockchain.cn/attachments/2024/07/yLv0D3gZ668e8f4203bf1.png)

解决：将 PRIVATE_KEY 值改为 0x 开头

#### 5. 成功部署

```shell
OpenSpace-S3-code/W2D4/MyToken on  main [⇡✘!+?] via 🅒 base took 8.6s 
➜ forge script --chain sepolia script/MyToken.s.sol:MyTokenScript --rpc-url $SEPOLIA_RPC_URL --broadcast --verify -vvvv

[⠊] Compiling...
No files changed, compilation skipped
Traces:
  [502914] MyTokenScript::run()
    ├─ [0] VM::envUint("PRIVATE_KEY") [staticcall]
    │   └─ ← [Return] <env var value>
    ├─ [0] VM::startBroadcast(<pk>)
    │   └─ ← [Return] 
    ├─ [457806] → new MyToken@0xB8c3c8AE6cEb874C472e3aeb5CCBb15c82Aa5B20
    │   ├─ emit Transfer(from: 0x0000000000000000000000000000000000000000, to: 0x750Ea21c1e98CcED0d4557196B6f4a5974CCB6f5, value: 10000000000000000000000000000 [1e28])
    │   └─ ← [Return] 1824 bytes of code
    ├─ [0] console::log("MyToken deployed to:", MyToken: [0xB8c3c8AE6cEb874C472e3aeb5CCBb15c82Aa5B20]) [staticcall]
    │   └─ ← [Stop] 
    ├─ [0] VM::stopBroadcast()
    │   └─ ← [Return] 
    └─ ← [Stop]

Script ran successfully.

== Logs ==
  MyToken deployed to: 0xB8c3c8AE6cEb874C472e3aeb5CCBb15c82Aa5B20

## Setting up 1 EVM.
==========================
Simulated On-chain Traces:

[457806] → new MyToken@0xB8c3c8AE6cEb874C472e3aeb5CCBb15c82Aa5B20
    ├─ emit Transfer(from: 0x0000000000000000000000000000000000000000, to: 0x750Ea21c1e98CcED0d4557196B6f4a5974CCB6f5, value: 10000000000000000000000000000 [1e28])
    └─ ← [Return] 1824 bytes of code

==========================

Chain 11155111

Estimated gas price: 45.399486877 gwei

Estimated total gas used for script: 725574

Estimated amount required: 0.032940687291292398 ETH

==========================

##### sepolia
✅  [Success]Hash: 0xf1656b037f8c69b27bc6b991dac153957d46cbe7f5e046208ce01ec8bbfb0f6c
Contract Address: 0xB8c3c8AE6cEb874C472e3aeb5CCBb15c82Aa5B20
Block: 6283206
Paid: 0.012347370703835136 ETH (558336 gas * 22.114588176 gwei)

✅ Sequence #1 on sepolia | Total Paid: 0.012347370703835136 ETH (558336 gas * avg 22.114588176 gwei)

==========================

ONCHAIN EXECUTION COMPLETE & SUCCESSFUL.
##
Start verification for (1) contracts
Start verifying contract `0xB8c3c8AE6cEb874C472e3aeb5CCBb15c82Aa5B20` deployed on sepolia

Submitting verification for [src/MyToken.sol:MyToken] 0xB8c3c8AE6cEb874C472e3aeb5CCBb15c82Aa5B20.

Submitting verification for [src/MyToken.sol:MyToken] 0xB8c3c8AE6cEb874C472e3aeb5CCBb15c82Aa5B20.
Submitted contract for verification:
        Response: `OK`
        GUID: `jzrzcfi55na1d9vvqmik5khmhskqa2ekyyclzu43ryxudku2yk`
        URL: https://sepolia.etherscan.io/address/0xb8c3c8ae6ceb874c472e3aeb5ccbb15c82aa5b20
Contract verification status:
Response: `NOTOK`
Details: `Pending in queue`
Contract verification status:
Response: `OK`
Details: `Pass - Verified`
Contract successfully verified
All (1) contracts were verified!

Transactions saved to: /Users/qiaopengjun/Code/solidity-code/OpenSpace-S3-code/W2D4/MyToken/broadcast/MyToken.s.sol/11155111/run-latest.json

Sensitive values saved to: /Users/qiaopengjun/Code/solidity-code/OpenSpace-S3-code/W2D4/MyToken/cache/MyToken.s.sol/11155111/run-latest.json

OpenSpace-S3-code/W2D4/MyToken on  main [⇡✘!+?] via 🅒 base took 1m 0.9s 
➜ 
```

##### 部署后的合约链接地址

<https://sepolia.etherscan.io/address/0xb8c3c8ae6ceb874c472e3aeb5ccbb15c82aa5b20>

![image-2.png](https://img.learnblockchain.cn/attachments/2024/07/69YnZVxK668e8f69926b2.png)

## 参考

- <https://book.getfoundry.sh/tutorials/solidity-scripting>
- <https://github.com/OpenZeppelin/openzeppelin-contracts/blob/master/contracts/token/ERC20/ERC20.sol>
- <https://github.com/Cyfrin/foundry-full-course-cu/discussions/216>
- <https://soliditylang.org/>
- <https://etherscan.io/>
- <https://dashboard.alchemy.com/>
- <https://eips.ethereum.org/EIPS/eip-20>
- <https://github.com/qiaopengjun5162/OpenSpace-S3-code/tree/main/W2D4/MyToken>

Web3学习之使用Foundry开发部署和开源ERC20合约

Foundry 是一个用于以太坊应用程序开发的快速、可移植和模块化的工具包，用Rust编写。

Foundry由以下部分组成：

Forge：以太坊测试框架（类似于Truffle、Hardhat和DappTools）。
Cast：与EVM智能合约、发送交易和获取链数据交互的瑞士军刀。
Anvil：类似于Ganache、Hardhat Network的本地以太坊节点。
Chisel：快速、实用且详细的solidity REPL。

Foundry

Foundry is a blazing fast, portable and modular toolkit for Ethereum application development written in Rust.

Foundry consists of:

Forge: Ethereum testing framework (like Truffle, Hardhat and DappTools).
Cast: Swiss army knife for interacting with EVM smart contracts, sending transactions and getting chain data.
Anvil: Local Ethereum node, akin to Ganache, Hardhat Network.
Chisel: Fast, utilitarian, and verbose solidity REPL.

Documentation

<https://book.getfoundry.sh/>

Usage

Build

forge build

Test

forge test

Format

forge fmt

Gas Snapshots

forge snapshot

Anvil

anvil

Deploy

forge script script/Counter.s.sol:CounterScript --rpc-url &lt;your_rpc_url> --private-key &lt;your_private_key>

Cast

cast &lt;subcommand>

Help

forge --help
anvil --help
cast --help

实操

安装Foundry

<https://book.getfoundry.sh/getting-started/installation>

curl -L https://foundry.paradigm.xyz | bash

foundryup

创建项目

forge init MyToken
cd MyToken

编写合约

// SPDX-License-Identifier: MIT
pragma solidity 0.8.20;

import "@openzeppelin/contracts/token/ERC20/ERC20.sol";

contract MyToken is ERC20 {
    constructor(
        string memory name_,
        string memory symbol_
    ) ERC20(name_, symbol_) {
        _mint(msg.sender, 1e10 * 1e18);
    }
}

安装依赖

forge install OpenZeppelin/openzeppelin-contracts
forge install OpenZeppelin/openzeppelin-contracts --no-commit

依赖映射

forge remappings > remappings.txt

编写测试脚本

// SPDX-License-Identifier: UNLICENSED
pragma solidity ^0.8.13;

import {Test, console} from "forge-std/Test.sol";
import {MyToken} from "../src/MyToken.sol";

contract MyTokenTest is Test {
    MyToken public mytoken;

    address public owner = address(0x123);
    address public alice = address(0x456);
    uint256 public totalSupply = 1e10 * 1e18;

    function setUp() public {
        mytoken = new MyToken("MyToken", "MTK");
        console.log("Setup complete");
    }

    function testBalance() public view {
        assertEq(mytoken.balanceOf(owner), 0);
        assertEq(mytoken.balanceOf(alice), 0);
        assertEq(mytoken.balanceOf(address(this)), totalSupply);
    }

    function testTransfer() public {
        mytoken.transfer(alice, 100);
        assertEq(mytoken.balanceOf(owner), 0);
        assertEq(mytoken.balanceOf(alice), 100);
    }

    function testName() public view {
        assertEq(mytoken.name(), "MyToken");
    }
    function testSymbol() public view {
        assertEq(mytoken.symbol(), "MTK");
    }
    function testDecimals() public view {
        assertEq(mytoken.decimals(), 18);
    }
    function testTotalSupply() public view {
        assertEq(mytoken.totalSupply(), totalSupply);
    }
}

构建与测试

forge build
forge test -vvvv

编写部署脚本

// SPDX-License-Identifier: UNLICENSED
pragma solidity ^0.8.13;

import {Script, console} from "forge-std/Script.sol";
import {MyToken} from "../src/MyToken.sol";

contract MyTokenScript is Script {
    MyToken public mytoken;

    function setUp() public {}

    function run() public {
        uint256 deployerPrivateKey = vm.envUint("PRIVATE_KEY");
        vm.startBroadcast(deployerPrivateKey);

        mytoken = new MyToken("MyToken", "MTK");

        console.log("MyToken deployed to:", address(mytoken));

        vm.stopBroadcast();
    }
}

部署合约

1. 创建 .env 文件

touch .env

文件内容

SEPOLIA_RPC_URL=
PRIVATE_KEY=
ETHERSCAN_API_KEY=

2. 修改 foundry.toml 文件，增加如下内容

solc = "0.8.20"
[rpc_endpoints]
sepolia = "${SEPOLIA_RPC_URL}"

[etherscan]
sepolia = { key = "${ETHERSCAN_API_KEY}" }

3. 部署合约

source .env
forge script --chain sepolia script/MyToken.s.sol --rpc-url $SEPOLIA_RPC_URL --broadcast --verify -vvvv

4. 报错解决

问题一：

报错`error: a value is required for '--fork-url <URL>' but none was supplied` 原因：.env 文件中环境变量等号后有空格`SEPOLIA_RPC_URL= http...`

解决：删除 .env 文件中环境变量等号后的空格 <https://github.com/Cyfrin/foundry-full-course-cu/discussions/216>

问题二：报错：script failed: failed parsing $PRIVATE_KEY as typeuint256: missing hex prefix ("0x") for hex string

解决：将 PRIVATE_KEY 值改为 0x 开头

5. 成功部署

OpenSpace-S3-code/W2D4/MyToken on  main [⇡✘!+?] via 🅒 base took 8.6s 
➜ forge script --chain sepolia script/MyToken.s.sol:MyTokenScript --rpc-url $SEPOLIA_RPC_URL --broadcast --verify -vvvv  

[⠊] Compiling...
No files changed, compilation skipped
Traces:
  [502914] MyTokenScript::run()
    ├─ [0] VM::envUint("PRIVATE_KEY") [staticcall]
    │   └─ ← [Return] &lt;env var value>
    ├─ [0] VM::startBroadcast(&lt;pk>)
    │   └─ ← [Return] 
    ├─ [457806] → new MyToken@0xB8c3c8AE6cEb874C472e3aeb5CCBb15c82Aa5B20
    │   ├─ emit Transfer(from: 0x0000000000000000000000000000000000000000, to: 0x750Ea21c1e98CcED0d4557196B6f4a5974CCB6f5, value: 10000000000000000000000000000 [1e28])
    │   └─ ← [Return] 1824 bytes of code
    ├─ [0] console::log("MyToken deployed to:", MyToken: [0xB8c3c8AE6cEb874C472e3aeb5CCBb15c82Aa5B20]) [staticcall]
    │   └─ ← [Stop] 
    ├─ [0] VM::stopBroadcast()
    │   └─ ← [Return] 
    └─ ← [Stop] 

Script ran successfully.

== Logs ==
  MyToken deployed to: 0xB8c3c8AE6cEb874C472e3aeb5CCBb15c82Aa5B20

## Setting up 1 EVM.
==========================
Simulated On-chain Traces:

  [457806] → new MyToken@0xB8c3c8AE6cEb874C472e3aeb5CCBb15c82Aa5B20
    ├─ emit Transfer(from: 0x0000000000000000000000000000000000000000, to: 0x750Ea21c1e98CcED0d4557196B6f4a5974CCB6f5, value: 10000000000000000000000000000 [1e28])
    └─ ← [Return] 1824 bytes of code

==========================

Chain 11155111

Estimated gas price: 45.399486877 gwei

Estimated total gas used for script: 725574

Estimated amount required: 0.032940687291292398 ETH

==========================

##### sepolia
✅  [Success]Hash: 0xf1656b037f8c69b27bc6b991dac153957d46cbe7f5e046208ce01ec8bbfb0f6c
Contract Address: 0xB8c3c8AE6cEb874C472e3aeb5CCBb15c82Aa5B20
Block: 6283206
Paid: 0.012347370703835136 ETH (558336 gas * 22.114588176 gwei)

✅ Sequence #1 on sepolia | Total Paid: 0.012347370703835136 ETH (558336 gas * avg 22.114588176 gwei)

==========================

ONCHAIN EXECUTION COMPLETE & SUCCESSFUL.
##
Start verification for (1) contracts
Start verifying contract `0xB8c3c8AE6cEb874C472e3aeb5CCBb15c82Aa5B20` deployed on sepolia

Submitting verification for [src/MyToken.sol:MyToken] 0xB8c3c8AE6cEb874C472e3aeb5CCBb15c82Aa5B20.

Submitting verification for [src/MyToken.sol:MyToken] 0xB8c3c8AE6cEb874C472e3aeb5CCBb15c82Aa5B20.

Submitting verification for [src/MyToken.sol:MyToken] 0xB8c3c8AE6cEb874C472e3aeb5CCBb15c82Aa5B20.

Submitting verification for [src/MyToken.sol:MyToken] 0xB8c3c8AE6cEb874C472e3aeb5CCBb15c82Aa5B20.
Submitted contract for verification:
        Response: `OK`
        GUID: `jzrzcfi55na1d9vvqmik5khmhskqa2ekyyclzu43ryxudku2yk`
        URL: https://sepolia.etherscan.io/address/0xb8c3c8ae6ceb874c472e3aeb5ccbb15c82aa5b20
Contract verification status:
Response: `NOTOK`
Details: `Pending in queue`
Contract verification status:
Response: `OK`
Details: `Pass - Verified`
Contract successfully verified
All (1) contracts were verified!

Transactions saved to: /Users/qiaopengjun/Code/solidity-code/OpenSpace-S3-code/W2D4/MyToken/broadcast/MyToken.s.sol/11155111/run-latest.json

Sensitive values saved to: /Users/qiaopengjun/Code/solidity-code/OpenSpace-S3-code/W2D4/MyToken/cache/MyToken.s.sol/11155111/run-latest.json

OpenSpace-S3-code/W2D4/MyToken on  main [⇡✘!+?] via 🅒 base took 1m 0.9s 
➜

部署后的合约链接地址

<https://sepolia.etherscan.io/address/0xb8c3c8ae6ceb874c472e3aeb5ccbb15c82aa5b20>

参考

学分: 47
分类: 框架/库
标签: Web3 Foundry ERC20 Solidity solidity 编程开发

Web3

Web3学习之使用Foundry开发部署和开源ERC20合约

Web3学习之使用Foundry开发部署和开源ERC20合约

Foundry

Documentation

Usage

Build

Test

Format

Gas Snapshots

Anvil

Deploy

Cast

Help

实操

安装Foundry

创建项目

编写合约

安装依赖

依赖映射

编写测试脚本

构建与测试

编写部署脚本

部署合约

1. 创建 .env 文件

2. 修改 foundry.toml 文件，增加如下内容

3. 部署合约

4. 报错解决

报错`error: a value is required for '--fork-url <URL>' but none was supplied` 原因：.env 文件中环境变量等号后有空格`SEPOLIA_RPC_URL= http...`

5. 成功部署

部署后的合约链接地址

参考

0 条评论

文章目录

Web3

Web3学习之使用Foundry开发部署和开源ERC20合约

Web3学习之使用Foundry开发部署和开源ERC20合约

Foundry

Documentation

Usage

Build

Test

Format

Gas Snapshots

Anvil

Deploy

Cast

Help

实操

安装Foundry

创建项目

编写合约

安装依赖

依赖映射

编写测试脚本

构建与测试

编写部署脚本

部署合约

1. 创建 .env 文件

2. 修改 foundry.toml 文件，增加如下内容

3. 部署合约

4. 报错解决

报错error: a value is required for '--fork-url &lt;URL>' but none was supplied 原因：.env 文件中环境变量等号后有空格SEPOLIA_RPC_URL= http...

5. 成功部署

部署后的合约链接地址

参考

0 条评论

文章目录

报错`error: a value is required for '--fork-url <URL>' but none was supplied` 原因：.env 文件中环境变量等号后有空格`SEPOLIA_RPC_URL= http...`