js 清空数据库数据库数据

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

// 连接到MongoDB
mongoose.connect('mongodb://localhost:27017/mydatabase', { useNewUrlParser: true, useUnifiedTopology: true });

// 定义一个简单的Schema和Model
const DataSchema = new mongoose.Schema({ name: String });
const Data = mongoose.model('Data', DataSchema);

// 清空数据库的API
app.delete('/api/data', async (req, res) => {
  try {
    await Data.deleteMany({});
    res.status(200).send('Database cleared successfully');
  } catch (error) {
    res.status(500).send('Error clearing database: ' + error.message);
  }
});

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

async function clearDatabase() {
  try {
    const response = await fetch('http://localhost:3000/api/data', {
      method: 'DELETE',
      headers: {
        'Content-Type': 'application/json'
      }
    });
    if (response.ok) {
      alert('Database cleared successfully');
    } else {
      alert('Failed to clear database: ' + response.statusText);
    }
  } catch (error) {
    console.error('Error:', error);
    alert('Failed to clear database: ' + error.message);
  }
}

// 调用函数清空数据库
clearDatabase();