ios - 如何使用 Alamofire 4 session 管理器？

Question

我在 Swift 2.3 中使用 Alamofire 3.4，我需要将我的代码更新到 Swift 3 和 Alamofire 4。我正在使用 Alamofire 的管理器在 url 中进行 POST。我阅读了有关 SessionManager 的文档，我了解到该请求使用了 .GET 方法。

我之前使用 Manager.Response() 从请求中获取回调，现在 SessionManager 中发生了变化。

如何使用 SessionManager 创建 POST 方法？我如何从请求中获得响应？

这是我的原始代码:

import UIKit
import AEXML
import Alamofire

class Request: NSObject {

    internal typealias RequestCompletion = (statusCode: Int?, error:NSError?) -> ()
    private var completionBlock: RequestCompletion!

    var serverTrustPolicy: ServerTrustPolicy!
    var serverTrustPolicies: [String: ServerTrustPolicy]!
    var afManager: Manager!

    func buildBdRequest(ip : String, serviceStr : String, completionBlock:RequestCompletion){
       let url = getURL(ip, service: serviceStr)
        configureAlamoFireSSLPinningWithCertificateData()
        makeAlamofireRequest(url)

        self.completionBlock = completionBlock
    }

    func makeAlamofireRequest(url : String){
        self.afManager.request(.POST, url)
            .validate(statusCode: 200..<300)
            .response { request, response, data, error in

                print("data - > \n    \(data.debugDescription) \n")
                print("response - >\n    \(response.debugDescription) \n")
                print("error - > \n    \(error.debugDescription) \n")

                var statusCode = 0

                if response != nil {
                    statusCode = (response?.statusCode)!
                }
                   self.completionBlock(statusCode: statusCode, error: error)
        }

    }


    private func getURL(ip : String, service: String) -> String{
        return ip + service;
    }

    func configureAlamoFireSSLPinningWithCertificateData() {
        self.serverTrustPolicies = [ :
            //            "github.com": self.serverTrustPolicy!
        ]

        self.afManager = Manager(
            configuration: NSURLSessionConfiguration.defaultSessionConfiguration()
        )
    }
}

Answer 1

我已将您的代码迁移到 Swift 3 和 Alamofire 4，结果如下:

internal typealias RequestCompletion = (Int?, Error?) -> ()?
private var completionBlock: RequestCompletion!
var afManager : SessionManager!


func makeAlamofireRequest(url :String){
    let configuration = URLSessionConfiguration.default

    afManager = Alamofire.SessionManager(configuration: configuration)
    afManager.request(url, method: .post).validate().responseJSON {
                response in
                switch (response.result) {
                case .success:
                    print("data - > \n    \(response.data?.debugDescription) \n")
                    print("response - >\n    \(response.response?.debugDescription) \n")
                    var statusCode = 0
                    if let unwrappedResponse = response.response {
                        let statusCode = unwrappedResponse.statusCode
                    }
                    self.completionBlock(statusCode, nil)

                    break
                case .failure(let error):
                    print("error - > \n    \(error.localizedDescription) \n")
                    let statusCode = response.response?.statusCode
                    self.completionBlock?(statusCode, error)
                    break
                }
            }
}

关于代码的一些说明:

在 Alamofire 4.0 中，您无需在代码 200..300 之间手动验证。 validate() 方法自动执行。

Documentation :

Automatically validates status code within 200...299 range, and that the Content-Type header of the response matches the Accept header of the request if one is provided.

您可以在responseJSON 方法中使用response 参数。它包含您在代码中需要的所有信息。

关于请求方法

open func request(_ url: URLConvertible, method: HTTPMethod = .get, parameters: Parameters? = nil, encoding: ParameterEncoding = URLEncoding.default, headers: HTTPHeaders? = nil) -> DataRequest


除 URL 之外的所有参数最初都为 nil 或具有默认值。因此，向您的请求添加参数或 header 是没有问题的。

希望对你有帮助