怎样判断以太坊地点类型？ - IT评测·应用市场-qidao123.com

curl https://eth.com/ \
-X POST \
-H "Content-Type: application/json" \
--data '{"method":"eth_getCode","params":["0xdac17f958d2ee523a2206206994597c13d831ec7","latest"],"id":1,"jsonrpc":"2.0"}'

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package main
import (
"context"
"encoding/hex"
"fmt"
"github.com/ethereum/go-ethereum/common"
"github.com/ethereum/go-ethereum/ethclient"
"log"
)
func main() {
// 连接到以太坊节点
client, err := ethclient.Dial("https://rpc.ankr.com/eth")
if err != nil {
log.Fatalf("Failed to connect to the Ethereum client: %v", err)
}
// 需要检查的以太坊地址
address := common.HexToAddress("0xdac17f958d2ee523a2206206994597c13d831ec7")
// 调用 eth_getCode 来检查地址是否是合约地址
code, err := client.CodeAt(context.Background(), address, nil) // 第二个参数为 nil，表示查询最新的状态
if err != nil {
log.Fatalf("Failed to get code at address: %v", err)
}
// 将字节码转换为十六进制字符串，并以 '0x' 开头
codeHex := "0x" + hex.EncodeToString(code)
fmt.Println("code is:", codeHex)
// 如果返回的代码为空，说明是普通地址；如果有代码，说明是合约地址
if len(code) == 0 {
fmt.Println("The address is a regular wallet address (EOA).")
} else {
fmt.Println("The address is a smart contract address.")
}
}

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package main
import (
"context"
"database/sql"
"fmt"
"log"
"sync"
"github.com/ethereum/go-ethereum/common"
"github.com/ethereum/go-ethereum/ethclient"
_ "github.com/go-sql-driver/mysql"
)
// 检查地址是否为合约地址的函数
func checkIfContract(client *ethclient.Client, address string, wg *sync.WaitGroup, results chan<- string) {
defer wg.Done()
// 将地址转换为eth的地址格式
ethAddress := common.HexToAddress(address)
// 查询地址的代码
code, err := client.CodeAt(context.Background(), ethAddress, nil)
if err != nil {
results <- fmt.Sprintf("Error checking address %s: %v", address, err)
return
}
// 判断代码是否为空
if len(code) == 0 {
results <- fmt.Sprintf("Address %s is a regular wallet address (EOA).", address)
} else {
results <- fmt.Sprintf("Address %s is a smart contract address.", address)
}
}
// 从数据库中获取以太坊地址
func getEthereumAddresses(db *sql.DB) ([]string, error) {
var addresses []string
// 执行查询（假设表名为 'eth_addresses'，列名为 'address'）
rows, err := db.Query("SELECT address FROM eth_addresses")
if err != nil {
return nil, fmt.Errorf("failed to execute query: %w", err)
}
defer rows.Close()
// 遍历查询结果并将地址加入到切片中
for rows.Next() {
var address string
if err := rows.Scan(&address); err != nil {
return nil, fmt.Errorf("failed to scan row: %w", err)
}
addresses = append(addresses, address)
}
// 检查是否有错误发生
if err := rows.Err(); err != nil {
return nil, fmt.Errorf("error while iterating rows: %w", err)
}
return addresses, nil
}
func main() {
// 连接到MySQL数据库，使用连接池
dsn := "username:password@tcp(localhost:3306)/your_database_name"
db, err := sql.Open("mysql", dsn)
if err != nil {
log.Fatalf("Failed to connect to the database: %v", err)
}
defer db.Close()
// 检查数据库连接是否可用
if err := db.Ping(); err != nil {
log.Fatalf("Failed to ping the database: %v", err)
}
// 获取所有以太坊地址
addresses, err := getEthereumAddresses(db)
if err != nil {
log.Fatalf("Failed to get Ethereum addresses from database: %v", err)
}
// 连接到以太坊节点（使用Infura或Geth节点）
client, err := ethclient.Dial("https://mainnet.infura.io/v3/YOUR_INFURA_PROJECT_ID")
if err != nil {
log.Fatalf("Failed to connect to the Ethereum client: %v", err)
}
// 并发查询每个地址
var wg sync.WaitGroup
results := make(chan string, len(addresses)) // 设置一个缓冲 channel 来存储结果
// 启动多个 goroutine 并发查询
for _, address := range addresses {
wg.Add(1)
go checkIfContract(client, address, &wg, results)
}
// 等待所有查询完成
wg.Wait()
close(results)
// 打印所有结果
for result := range results {
fmt.Println(result)
}
}

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