node.js 访问统计

const express = require('express');
const app = express();
const visitCount = {};

app.use((req, res, next) => {
  const ip = req.ip;
  if (!visitCount[ip]) {
    visitCount[ip] = 0;
  }
  visitCount[ip]++;
  console.log(`IP: ${ip}, Visits: ${visitCount[ip]}`);
  next();
});

app.get('/', (req, res) => {
  res.send('Hello World!');
});

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

const mongoose = require('mongoose');

mongoose.connect('mongodb://localhost/visits', { useNewUrlParser: true, useUnifiedTopology: true });

const visitSchema = new mongoose.Schema({
  ip: String,
  timestamp: Date
});

const Visit = mongoose.model('Visit', visitSchema);

app.use((req, res, next) => {
  const visit = new Visit({ ip: req.ip, timestamp: new Date() });
  visit.save();
  next();
});