main.go

package main

import (
	"context"
	"fmt"
	"log"
	"math"
	"math/big"

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

func main() {
	client, err := ethclient.Dial("https://cloudflare-eth.com")
	if err != nil {
		log.Fatal(err)
	}

	// 读取一个账户的余额
	account := common.HexToAddress("0xeF20B71f4C9a9036450E01D5361917D6C97262c7")
	balance, err := client.BalanceAt(context.Background(), account, nil)
	if err != nil {
		log.Fatal(err)
	}
	fmt.Println(balance) // 25893180161173005034

	// 传区块号能让您读取该区块时的账户余额
	blockNumber := big.NewInt(5532993)
	balanceAt, err := client.BalanceAt(context.Background(), account, blockNumber)
	if err != nil {
		log.Fatal(err)
	}
	fmt.Println(balanceAt) // 25729324269165216042

	// 以太坊单位转换 wei/10^18
	fbalance := new(big.Float)
	fbalance.SetString(balanceAt.String())
	ethValue := new(big.Float).Quo(fbalance, big.NewFloat(math.Pow10(18)))
	fmt.Println(ethValue) // 25.729324269165216041

	// 读取未确认交易的余额
	pendingBalance, err := client.PendingBalanceAt(context.Background(), account)
	if err != nil {
		log.Fatal(err)
	}
	fmt.Println(pendingBalance) // 25729324269165216042
}