如何通过传递id作为参数来删除实体？

const express = require('express');
const app = express();
const port = 3000;

// 模拟数据库
let entities = [
    { id: 1, name: 'Entity 1' },
    { id: 2, name: 'Entity 2' },
    { id: 3, name: 'Entity 3' }
];

// 删除实体的路由
app.delete('/entities/:id', (req, res) => {
    const id = parseInt(req.params.id);
    const index = entities.findIndex(entity => entity.id === id);

    if (index !== -1) {
        entities.splice(index, 1);
        res.status(204).send(); // 204 No Content
    } else {
        res.status(404).json({ message: 'Entity not found' });
    }
});

app.listen(port, () => {
    console.log(`Server running at http://localhost:${port}`);
});

curl -X DELETE http://localhost:3000/entities/2