使用Swift将类的数组保存到Firebase数据库中

import Firebase

// 在AppDelegate的didFinishLaunchingWithOptions方法中配置Firebase
FirebaseApp.configure()

class Person {
    var name: String
    var age: Int
    
    init(name: String, age: Int) {
        self.name = name
        self.age = age
    }
}

// 创建Person对象数组
let persons: [Person] = [
    Person(name: "John", age: 25),
    Person(name: "Jane", age: 30),
    Person(name: "Mike", age: 35)
]

// 获取Firebase数据库的引用
let databaseRef = Database.database().reference()

// 将Person对象数组保存到Firebase数据库中
databaseRef.child("persons").setValue(persons)

// 监听Firebase数据库的"persons"节点
databaseRef.child("persons").observe(.value) { (snapshot) in
    // 处理数据变化
    if let personsData = snapshot.value as? [[String: Any]] {
        // 将数据转换为Person对象数组
        let persons = personsData.compactMap { (personData) -> Person? in
            guard let name = personData["name"] as? String,
                  let age = personData["age"] as? Int else {
                return nil
            }
            return Person(name: name, age: age)
        }
        
        // 处理获取到的Person对象数组
        for person in persons {
            print("Name: \(person.name), Age: \(person.age)")
        }
    }
}