搭建以太坊环境

---

1. 代码编译

下载go-ethereum

构建make all

构建成功如下

1. 创建账户

可以通过clef来生成账户。 由于我已经存在账户，导入已经账户。 将metamask账户的私钥导入（切忌泄露）。 clef importraw file 可以看到通过私钥算出我的账户(EOA)

由于创建transaction需要签名 执行clef --chainid 11155111(Sepolia testnet) 命令

2. 同步数据

geth --sepolia --authrpc.addr localhost --authrpc.port 8551 --authrpc.vhosts localhost --http --http.api eth,net (网络无法连接enode，放弃治疗)

3. 接入api

查询账户余额

package main

import (
	"encoding/json"
	"fmt"
	"io"
	"net/http"
	"net/url"
)

const API_ADDRESS = "https://api-sepolia.etherscan.io/api"

const ADDRESS = "0x2578205BAfEACD598773dF05E2192efc7835c59E"

const API_KEY = "your api key"

type ether struct {
	tag     string `map:"tag,omitempty"`
	address string `map:"address,omitempty"`
	apikey  string `map:"apikey,omitempty"`
}

type etherAccount struct {
	ether
	module string `map:"module,omitempty"`
	action string `map:"action,omitempty"`
}

type etherAccountResp struct {
	Status  string `json:"status"`
	Message string `json:"message"`
	Result  string `json:"result"`
}

func newEther() ether {
	return ether{
		tag:     "latest",
		address: ADDRESS,
		apikey:  API_KEY,
	}
}

func newEtherAccount(module, action string) *etherAccount {
	ether := newEther()
	var account etherAccount
	account.module = module
	account.action = action
	account.apikey = ether.apikey
	account.tag = ether.tag
	account.address = ether.address
	return &account
}

func main() {
	module := "account"
	action := "balance"
	account := newEtherAccount(module, action)

	params := url.Values{}
	params.Add("tag", account.tag)
	params.Add("address", account.address)
	params.Add("apikey", account.apikey)
	params.Add("module", account.module)
	params.Add("action", account.action)
	accountUrl, _ := url.Parse(API_ADDRESS)
	accountUrl.RawQuery = params.Encode()
	proxy, _ := url.Parse("http://127.0.0.1:7890")
	client := &http.Client{Transport: &http.Transport{Proxy: http.ProxyURL(proxy)}}
	resp, err := client.Get(accountUrl.String())
	if err != nil {
		panic(err.Error())
	}
	defer resp.Body.Close()
	body, _ := io.ReadAll(resp.Body)
	var accountResp etherAccountResp
	json.Unmarshal(body, &accountResp)
	fmt.Printf(" %+v ", accountResp)
}

api返回的余额

etherscan账户的余额