传入文档数组的Mongoose更新

const mongoose = require('mongoose');

// 连接MongoDB数据库
mongoose.connect('mongodb://localhost/mydatabase', { useNewUrlParser: true, useUnifiedTopology: true })
  .then(() => {
    console.log('Connected to MongoDB');
  })
  .catch((error) => {
    console.error('Failed to connect to MongoDB', error);
  });

// 定义数据模型
const userSchema = new mongoose.Schema({
  name: String,
  age: Number,
});

const User = mongoose.model('User', userSchema);

// 更新文档
const updateDocs = [
  { name: 'Alice', age: 25 },
  { name: 'Bob', age: 30 },
  { name: 'Charlie', age: 35 },
];

User.updateMany({}, { $set: { age: 40 } })
  .then((result) => {
    console.log('Updated documents:', result.nModified);
  })
  .catch((error) => {
    console.error('Failed to update documents', error);
  });