Golang を使用してブロックチェーン分散金融アプリケーションを開発する

package main

import (
    "fmt"
)

type Asset struct {
    Name  string
    Value float64
}

func main() {
    asset := Asset{
        Name:  "MyAsset",
        Value: 100.0,
    }

    fmt.Printf("Asset Name: %s\n", asset.Name)
    fmt.Printf("Asset Value: %f\n", asset.Value)
}

package main

import (
    "context"
    "fmt"

    "github.com/ethereum/go-ethereum/client"
    "github.com/ethereum/go-ethereum/common"
    "github.com/ethereum/go-ethereum/ethclient"
)

func main() {
    // 连接到以太坊网络
    client, err := client.Dial("ws://localhost:8546")
    if err != nil {
        panic(err)
    }
    defer client.Close()

    // 加载智能合约 ABI
    contractAddress := common.HexToAddress("0x1234...")
    bytecode, err := client.CodeAt(context.Background(), contractAddress, nil) // 从链上获取已部署的合约bytecode
    if err != nil {
        panic(err)
    }

    // 创建与合约交互的函数
    contract, err := ethclient.NewContract(contractAddress, bytecode)
    if err != nil {
        panic(err)
    }

    // 调用智能合约函数
    result, err := contract.Call(context.Background(), "balanceOf", common.HexToAddress("0xabcd...")) // 注意此处传入函数名及其参数
    if err != nil {
        panic(err)
    }

    fmt.Println(result)
}

// 定义代币合约
type Token struct {
    Name        string
    Symbol      string
    TotalSupply int64
    Balances    map[string]int64
}

// 创建代币
func NewToken(name, symbol string, totalSupply int64) *Token {
    return &Token{
        Name:        name,
        Symbol:      symbol,
        TotalSupply: totalSupply,
        Balances:    make(map[string]int64),
    }
}

// 分发代币
func (token *Token) Distribute(recipient string, amount int64) {
    token.Balances[recipient] += amount
}

// 转移代币
func (token *Token) Transfer(sender, recipient string, amount int64) {
    token.Balances[sender] -= amount
    token.Balances[recipient] += amount
}

// 主函数
func main() {
    // 创建代币
    token := NewToken("MyToken", "MTK", 1000000)

    // 分发代币
    token.Distribute("Alice", 500000)
    token.Distribute("Bob", 300000)
    token.Distribute("Carol", 200000)

    // 转移代币
    token.Transfer("Alice", "Bob", 100000)

    // 输出余额
    fmt.Println("Alice's Balance:", token.Balances["Alice"])
    fmt.Println("Bob's Balance:", token.Balances["Bob"])
    fmt.Println("Carol's Balance:", token.Balances["Carol"])
}