iOS 開發學習之路（登陸驗證調用WebService）二，ioswebservice

iOS 開發學習之路（登陸驗證調用WebService）二，ioswebservice

　　　　swift3.0下使用Alamofire調用Webservice遇到的一些問題以及解決方案。

　　　　首先是針對沒有認證的https下的介面處理問題（ps:不推薦在正式版本中使用），manager.request替換掉了Alamofire.request。

let manager = Alamofire.SessionManager.default        manager.delegate.sessionDidReceiveChallenge = { session, challenge in            var disposition: URLSession.AuthChallengeDisposition = .performDefaultHandling            var credential: URLCredential?                        if challenge.protectionSpace.authenticationMethod == NSURLAuthenticationMethodServerTrust {                disposition = URLSession.AuthChallengeDisposition.useCredential                credential = URLCredential(trust: challenge.protectionSpace.serverTrust!)            } else {                    if challenge.previousFailureCount > 0 {                        disposition = .cancelAuthenticationChallenge                    } else {                        credential = manager.session.configuration.urlCredentialStorage?.defaultCredential(for: challenge.protectionSpace)                        if credential != nil {                        disposition = .useCredential                    }                }            }                        return (disposition, credential)        }

　　　　針對soap協議，使用mutableURLRequest來進行請求。

        mutableURLRequest.setValue("text/xml; charset=utf-8", forHTTPHeaderField: "Content-Type")        mutableURLRequest.setValue(action, forHTTPHeaderField: "SOAPAction")        mutableURLRequest.setValue(String(soapMsg.characters.count), forHTTPHeaderField: "Content-Length")        mutableURLRequest.httpMethod = "POST"        mutableURLRequest.httpBody = soapMsg.data(using: String.Encoding.utf8)

　　　　得到返回的值包含來xml命名空間和其中的有效結果。通過第三方庫SWXMLHash來進行XML的解析，再針對解析得到的Json字串利用JSONSerialization獲得相應的字典。　

        manager.request(mutableURLRequest as URLRequest).responseData{ response in            //debugPrint(response)            let xml = SWXMLHash.parse(response.data!)            let a: String = (xml["soap:Envelope"]["soap:Body"]["FindUserNewResponse"]["FindUserNewResult"].element?.text)!            print(a)            if !a.isEmpty && a != "err:帳號或密碼有誤！"{                let data = a.data(using: String.Encoding.utf8)! as Data                let a_dic = try? JSONSerialization.jsonObject(with: data as Data, options: JSONSerialization.ReadingOptions.mutableContainers)                if let dict = a_dic as? Dictionary<String, String> {                    print(dict["姓名"]!)                    print(dict["地區"]!)                    callback?(true)                }            }else{                callback?(false)            }        }

　　　　注意上面使用了一個回呼函數，這是因為Alamofire調用WebService是非同步方式，這裡通過isOk來判定登陸是否成功。

 func reqWebService(values: Dictionary<String, String>, callback: ((_ isOk: Bool)->Void)?){}