Swift 2 SOAP Web服务调用

我开始将我的旧Objective-c SOAP Web服务代码迁移到Swift 2.但是我失败了，因为我从未得到过使用Swift 2的响应，这最终让我疯了 .

我开始隔离东西并遵循这个基于Swift 1.2的Soap温度转换器教程（http://webindream.com/soap-with-swift/） .

这是我的Swift 2转换后的ViewController，但 connection 从未实现（ connection == true 从未发生过） .

//
//  ViewController.swift
//  Temperature Converter
//
//  Created by Farhad on 10/24/14.
//  Copyright (c) 2014 Web In Dream. All rights reserved.
//

import UIKit

//Step 1: Add protocol names that we will be delegating.

class ViewController: UIViewController, UITextFieldDelegate, NSURLConnectionDelegate, NSXMLParserDelegate {

    var mutableData:NSMutableData  = NSMutableData()
    var currentElementName:NSString = ""



    @IBOutlet var txtCelsius : UITextField!
    @IBOutlet var txtFahrenheit : UITextField!


    @IBAction func actionConvert(sender : AnyObject) {
        let celcius = txtCelsius.text

        let soapMessage = "<?xml version='1.0' encoding='utf-8'?><soap:Envelope xmlns:xsi='http://www.w3.org/2001/XMLSchema-instance' xmlns:xsd='http://www.w3.org/2001/XMLSchema' xmlns:soap='http://schemas.xmlsoap.org/soap/envelope/'><soap:Body><CelsiusToFahrenheit xmlns='http://www.w3schools.com/webservices/'><Celsius>\(celcius)</Celsius></CelsiusToFahrenheit></soap:Body></soap:Envelope>"


        let urlString = "http://www.w3schools.com/webservices/tempconvert.asmx"

        let url = NSURL(string: urlString)

        let theRequest = NSMutableURLRequest(URL: url!)

        let msgLength = String(soapMessage.characters.count)

        theRequest.addValue("text/xml; charset=utf-8", forHTTPHeaderField: "Content-Type")
        theRequest.addValue(msgLength, forHTTPHeaderField: "Content-Length")
        theRequest.HTTPMethod = "POST"
        theRequest.HTTPBody = soapMessage.dataUsingEncoding(NSUTF8StringEncoding, allowLossyConversion: false) // or false

        let connection = NSURLConnection(request: theRequest, delegate: self, startImmediately: true)
        connection!.start()

        if (connection == true) {
            var mutableData : NSMutableData = NSMutableData()
        }


    }




    override func viewDidLoad() {
        super.viewDidLoad()
        // Do any additional setup after loading the view, typically from a nib.
    }

    override func didReceiveMemoryWarning() {
        super.didReceiveMemoryWarning()
        // Dispose of any resources that can be recreated.
    }


    // NSURLConnectionDelegate

    // NSURL



    func connection(connection: NSURLConnection!, didReceiveResponse response: NSURLResponse!) {
        mutableData.length = 0;
    }

    func connection(connection: NSURLConnection!, didReceiveData data: NSData!) {
        mutableData.appendData(data)
    }


    func connectionDidFinishLoading(connection: NSURLConnection!) {
        let xmlParser = NSXMLParser(data: mutableData)
        xmlParser.delegate = self
        xmlParser.parse()
        xmlParser.shouldResolveExternalEntities = true

    }


    // NSXMLParserDelegate

    func parser(parser: NSXMLParser, didEndElement elementName: String, namespaceURI: String?, qualifiedName qName: String?) {
        currentElementName = elementName

    }



    func parser(parser: NSXMLParser!, foundCharacters string: String!) {
        if currentElementName == "CelsiusToFahrenheitResult" {
            txtFahrenheit.text = string
        }
    }



}

在互联网上已经有很多蠢事，但没有真正的答案为什么连接永远不会得到Swift 2.至少没有人最终解决我的问题;-(

这就是我再次提出这个问题的原因，希望为社区获得一个可行的版本 . 那里有没有成功的Swift 2.1 SOAP Web服务调用并且可以共享解决方案？

非常感谢John先生