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下面是一个完整的 Ethers.js + Express + Vue2 + MySQL 实现方案，用于：
💡每天凌晨 2 点监听某合约地址的 Transfer 事件，写入 MySQL 数据库，并展示每日 NFT 交易量图表（Vue2 + ECharts）
✅ 后端部分（Express + Ethers.js + MySQL）
📁 项目结构（后端部分）：
backend/
├── abi/NFT_ABI.json
├── db.js
├── syncTransfers.js
├── api.js
└── server.js
📌 1. db.js（MySQL 连接池）
const mysql = require('mysql2/promise');const pool = mysql.createPool({host: 'localhost',user: 'root',password: 'yourpassword',database: 'nft_data',
});module.exports = pool;
📌 2. syncTransfers.js（同步 NFT Transfer 数据）
const { ethers } = require('ethers');
const pool = require('./db');
const abi = require('./abi/NFT_ABI.json');const provider = new ethers.JsonRpcProvider('https://sepolia.infura.io/v3/YOUR_INFURA_KEY');
const contract = new ethers.Contract('0xYourContractAddress', abi, provider);async function syncTransfers() {const latestBlock = await provider.getBlockNumber();const fromBlock = latestBlock - 5000;const toBlock = latestBlock;const events = await contract.queryFilter('Transfer', fromBlock, toBlock);for (const event of events) {const { transactionHash, blockNumber, args } = event;const { from, to, tokenId } = args;const block = await provider.getBlock(blockNumber);const timestamp = new Date(block.timestamp * 1000);await pool.execute(`INSERT IGNORE INTO nft_transfers (tx_hash, from_address, to_address, token_id, block_number, timestamp)VALUES (?, ?, ?, ?, ?, ?)`, [transactionHash, from, to, tokenId.toString(), blockNumber, timestamp]);}console.log(`✅ Synced ${events.length} transfers`);
}module.exports = syncTransfers;
📌 3. api.js（提供每日统计 API）
const express = require('express');
const pool = require('./db');
const router = express.Router();router.get('/daily-stats', async (req, res) => {const [rows] = await pool.execute(`SELECT DATE(timestamp) as day, COUNT(*) as countFROM nft_transfersGROUP BY day ORDER BY day DESC LIMIT 7`);res.json(rows);
});module.exports = router;
📌 4. server.js（Express + 定时任务）
const express = require('express');
const cron = require('node-cron');
const syncTransfers = require('./syncTransfers');
const api = require('./api');const app = express();
app.use('/api', api);// 定时任务：每天凌晨 2 点执行
cron.schedule('0 2 * * *', () => {console.log('⏰ Running daily syncTransfers job...');syncTransfers();
});app.listen(3000, () => {console.log('🚀 Server running on http://localhost:3000');
});
📌 5. SQL 建表语句
CREATE TABLE nft_transfers (id INT AUTO_INCREMENT PRIMARY KEY,tx_hash VARCHAR(66),from_address VARCHAR(42),to_address VARCHAR(42),token_id VARCHAR(100),block_number INT,timestamp DATETIME,UNIQUE(tx_hash)
);
✅ 前端部分（Vue2 + Axios + ECharts）
📁 frontend/src/components/Chart.vue
<template><div><h2>每日 NFT 交易量</h2><div id="chart" style="height: 400px"></div></div>
</template><script>
import axios from 'axios';
import echarts from 'echarts';export default {mounted() {axios.get('/api/daily-stats').then(res => {const days = res.data.map(r => r.day);const counts = res.data.map(r => r.count);const chart = echarts.init(document.getElementById('chart'));chart.setOption({title: { text: '每日交易量' },tooltip: {},xAxis: { type: 'category', data: days },yAxis: { type: 'value' },series: [{ type: 'line', data: counts }]});});}
};
</script>
✅ 最后提示
-
🔧 确保将 Infura Key、合约地址、ABI 替换为你自己的
-
✅
Transfer事件仅适用于符合 ERC721/1155 标准的 NFT 合约 -
📦 启动命令如下：
# 安装依赖
npm install express mysql2 ethers node-cron axios echarts# 启动后端
node server.js# 启动前端（Vue2）
npm run serve
如果你还想加：
-
统计活跃地址数
-
展示 NFT TokenId 的交易趋势
-
接入钱包连接
-
用 NestJS 替换 Express
可以继续说，我可以帮你逐步拓展。