区块链开发源码

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.0;

contract SimpleStorage {
    uint storedData;

    function set(uint x) public {
        storedData = x;
    }

    function get() public view returns (uint) {
        return storedData;
    }
}

import React, { useState, useEffect } from 'react';

function App() {
    const [blocks, setBlocks] = useState([]);

    useEffect(() => {
        fetch('/api/blocks')
            .then(response => response.json())
            .then(data => setBlocks(data));
    }, []);

    return (
        <div>
            <h1>Blockchain Explorer</h1>
            <ul>
                {blocks.map(block => (
                    <li key={block.hash}>{block.height} - {block.hash}</li>
                ))}
            </ul>
        </div>
    );
}

export default App;

const express = require('express');
const app = express();

app.get('/api/blocks', (req, res) => {
    // 这里应该是从区块链数据库获取数据的逻辑
    const blocks = [
        { height: 1, hash: '0x1234...' },
        { height: 2, hash: '0x5678...' },
    ];
    res.json(blocks);
});

app.listen(3000, () => {
    console.log('Server is running on port 3000');
});

// 在部署合约时增加Gas限制
myContract.deploy({ data: bytecode, arguments: [arg1, arg2] }, { gas: 5000000 })
    .send({ from: account, gas: 6000000 });