如何从Swift文件管理器播放音频文件？

import UIKit
import AVFoundation

class ViewController: UIViewController {
    
    var audioPlayer: AVAudioPlayer?
    
    override func viewDidLoad() {
        super.viewDidLoad()
        
        // 设置音频文件的路径
        guard let url = Bundle.main.url(forResource: "example", withExtension: "mp3") else {
            print("音频文件未找到")
            return
        }
        
        do {
            // 初始化 AVAudioPlayer
            audioPlayer = try AVAudioPlayer(contentsOf: url)
            
            // 准备播放
            audioPlayer?.prepareToPlay()
            
            // 播放音频
            audioPlayer?.play()
        } catch {
            print("无法初始化音频播放器: \(error.localizedDescription)")
        }
    }
}