给定一个短URLhttps://itun.es/us/JB7h_，如何将其扩展为完整URL？例如https://music.apple.com/us/album/blackstar/1059043043 最佳答案 扩展extensionURL{funcgetExpandedURL()asyncthrows->Result{varrequest=URLRequest(url:self)request.httpMethod="HEAD"let(_,response)=tryawaitURLSession.shared.data(for: