Swift 3兼容版本与Alamofire不兼容

Question

我有以下代码与Swift 2.2完美配合：

let request = NSMutableURLRequest(url: URL!.appendingPathComponent(result.path))

但是当我使上面的代码Swift 3.0兼容时，它没有按预期工作。下面是Swift 3.0代码，我在第import Alamofire struct Communication { static let foneKey = "fone" static let emailKey = "email" static let countryKey = "country" enum Router: URLRequestConvertible { /// Returns a URL request or throws if an `Error` was encountered. /// /// - throws: An `Error` if the underlying `URLRequest` is `nil`. /// /// - returns: A URL request. public func asURLRequest() throws -> URLRequest { return URLRequest } case init(String, String, String) var URLRequest: URLRequest { let result: (path: String, method: Alamofire.HTTPMethod, parameters: [String: AnyObject]) = { switch self { case .init(let foneKey, let email, let country): let params = [foneKey: fone, emailKey: email, countryKey: country] return ("Init", .post, params as [String : AnyObject]) } }() let URL = Foundation.URL(string: baseURLString) let request = NSMutableURLRequest(url: URL!.appendingPathComponent(result.path)) let encoding = URLEncoding.methodDependent request.httpMethod = result.method.rawValue // request.URLRequest.HTTPMethod = result.method.rawValue var request1: URLRequest? do { request1 = try encoding.encode(self, with: result.parameters) } catch { print("error in URLRequest encoding...") } return request1! // return encoding.encode(request, parameters: result.parameters).0 } } } 行

发生了崩溃

func communicate() {
        Alamofire.request(Communication.Router.init("8765432453", "xyz@abc.com", "1").URLRequest as URLRequestConvertible).responseJSON(options: [JSONSerialization.ReadingOptions.allowFragments, JSONSerialization.ReadingOptions.mutableContainers]) { (response) -> Void in
            switch response.result {
            case .success:
                if let value = response.result.value {
                    // code handled
                }
            case .failure(let error):
                print(error)
            }
        }
    }

下面是崩溃的图像：

崩溃的原因是上述行的无限循环。

我想在创建Request对象时存在一些问题，但不确定我缺少什么。我尝试了几种替代方案而不是上面的代码，但没有一种方法有效。

有关详细信息，请参阅下面的方法：

create unique index unq_bookissuedReference
on Books(Book_id) where [status] = 'issued' 

上述问题的可能解决方案是什么？一个有效的解决方案是创建Request单独为我工作。但我希望上面的通用解决方案目前在我的Swift 2.2应用程序中实现。