eth_call

网络： Ethereum · 主网 · Chain ID 1（0x1）

计为 1 个 Request。 计费规则见 Request Counting。

立即执行一次消息调用，但不会在区块链上创建交易。常用于读取合约状态数据。

参数

Object — 交易调用对象：

字段类型必填说明
from DATA 否发送方地址
to DATA 是合约地址
gas QUANTITY 否 Gas 上限
gasPrice QUANTITY 否 Gas 单价
value QUANTITY 否转账金额
data DATA 否 ABI 编码后的函数调用数据
QUANTITY|TAG — 区块号，或 "latest"、"earliest"、"pending"。

字段	类型	必填	说明
from	DATA	否	发送方地址
to	DATA	是	合约地址
gas	QUANTITY	否	Gas 上限
gasPrice	QUANTITY	否	Gas 单价
value	QUANTITY	否	转账金额
data	DATA	否	ABI 编码后的函数调用数据

DATA — 合约函数执行后的返回值。

请求


{
  "jsonrpc": "2.0",
  "method": "eth_call",
  "params": [
    {
      "to": "0xA0b86991c6218b36c1d19D4a2e9Eb0cE3606eB48",
      "data": "0x18160ddd"
    },
    "latest"
  ],
  "id": 1
}

示例读取 ERC-20 totalSupply()（选择器 0x18160ddd）。请把 to 换成 Ethereum 上的代币合约。

响应


{
  "jsonrpc": "2.0",
  "id": 1,
  "result": "0x0000000000000000000000000000000000000000000000000000001234567890"
}

代码示例


curl -X POST https://ethereum-rpc.blockreq.com/v1/rpc/public \
  -H "Content-Type: application/json" \
  -d '{"jsonrpc":"2.0","method":"eth_call","params":[{"to":"0xA0b86991c6218b36c1d19D4a2e9Eb0cE3606eB48","data":"0x18160ddd"},"latest"],"id":1}'


const response = await fetch("https://ethereum-rpc.blockreq.com/v1/rpc/public", {
  method: "POST",
  headers: { "Content-Type": "application/json" },
  body: JSON.stringify({
  "jsonrpc": "2.0",
  "method": "eth_call",
  "params": [
    {
      "to": "0xA0b86991c6218b36c1d19D4a2e9Eb0cE3606eB48",
      "data": "0x18160ddd"
    },
    "latest"
  ],
  "id": 1
}),
});
const data = await response.json();
console.log(data.result);


import requests

response = requests.post(
    "https://ethereum-rpc.blockreq.com/v1/rpc/public",
    json={
  "jsonrpc": "2.0",
  "method": "eth_call",
  "params": [
    {
      "to": "0xA0b86991c6218b36c1d19D4a2e9Eb0cE3606eB48",
      "data": "0x18160ddd"
    },
    "latest"
  ],
  "id": 1
}
)
print(response.json()["result"])


package main

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

func main() {
	payload := []byte(`{"jsonrpc":"2.0","method":"eth_call","params":[{"to":"0xA0b86991c6218b36c1d19D4a2e9Eb0cE3606eB48","data":"0x18160ddd"},"latest"],"id":1}`)
	resp, err := http.Post(
		"https://ethereum-rpc.blockreq.com/v1/rpc/public",
		"application/json",
		bytes.NewBuffer(payload),
	)
	if err != nil {
		panic(err)
	}
	defer resp.Body.Close()

	body, _ := io.ReadAll(resp.Body)
	var result map[string]interface{}
	json.Unmarshal(body, &result)
	fmt.Println(result["result"])
}


import { createPublicClient, http } from "viem";

const client = createPublicClient({
  transport: http("https://ethereum-rpc.blockreq.com/v1/rpc/public"),
});

const result = await client.request({
  method: "eth_call",
  params: [{"to":"0xA0b86991c6218b36c1d19D4a2e9Eb0cE3606eB48","data":"0x18160ddd"},"latest"],
});
console.log(result);


cast rpc --rpc-url https://ethereum-rpc.blockreq.com/v1/rpc/public eth_call {"to":"0xA0b86991c6218b36c1d19D4a2e9Eb0cE3606eB48","data":"0x18160ddd"} latest


const { ethers } = require("hardhat");

async function main() {
  const provider = new ethers.JsonRpcProvider("https://ethereum-rpc.blockreq.com/v1/rpc/public");
  const result = await provider.send("eth_call", [{"to":"0xA0b86991c6218b36c1d19D4a2e9Eb0cE3606eB48","data":"0x18160ddd"},"latest"]);
  console.log(result);
}

main();

eth_call

参数

返回

请求

响应

代码示例

在线试用