Swift使用Alamofire调用C# Webservice的问题

同事已经使用安卓调用成功，传一个JSON给Webservice，并返回一个JSON
已经将webservice架设到外网服务器上了http://115.29.41.12:83/serForImccoy.asmx，大神帮忙调用一下看看，我写的代码如下，但一直报错：
var wcfurlString = "http://115.29.41.12:83/serForImccoy.asmx/isUser"
Alamofire.request(Method.POST, wcfurlString, parameters: ["userId" : id , "pwd" : psw], encoding: ParameterEncoding.JSON).responseJSON { ( request, response, JSON, error) in
println(request)
println(response)
println(JSON)
println(error)
}
}
输出信息如下：
{ URL: http://115.29.41.12:83/serForImccoy.asmx/isUser }
Optional( { URL: http://115.29.41.12:83/serForImccoy.asmx/isUser } { status code: 500, headers {
"Cache-Control" = private;
"Content-Length" = 3297;
"Content-Type" = "text/html; charset=utf-8";
Date = "Tue, 18 Aug 2015 02:56:33 GMT";
Server = "Microsoft-IIS/7.5";
"X-AspNet-Version" = "4.0.30319";
"X-Powered-By" = "ASP.NET";
} })
nil
Optional(Error Domain=NSCocoaErrorDomain Code=3840 "The operation couldn’t be completed. (Cocoa error 3840.)" (Invalid value around character 0.) UserInfo=0x7f9cec9a2d20 {NSDebugDescription=Invalid value around character 0.})

 func reqWebService() {
        let URL = NSURL(string: "http://115.29.41.12:83/serForImccoy.asmx")!
        let action: String = "http://imccoy.com/webservices/isUser"
        let mutableURLRequest: NSMutableURLRequest = NSMutableURLRequest(URL:URL)

        let values = "{\"userId\": \"test\", \"pwd\": \"pwd\"}";
        let soapMsg: String = toSoapMessage("isUser", params: "json", paramValues: values)

        //mutableURLRequest.setValue("application/soap+xml; charset=utf-8", forHTTPHeaderField: "Content-Type")
        //么的，oc中，Content-Type是application/soap+xml就可以访问，swift里，就不行，必须与.asmx接口保持一致！
        mutableURLRequest.setValue("text/xml; charset=utf-8", forHTTPHeaderField: "Content-Type")
        mutableURLRequest.setValue(action, forHTTPHeaderField: "SOAPAction")
        mutableURLRequest.setValue(String(soapMsg.length), forHTTPHeaderField: "Content-Length")
        mutableURLRequest.HTTPMethod = "POST"
        mutableURLRequest.HTTPBody = soapMsg.dataUsingEncoding(NSUTF8StringEncoding)

        var result = ""
        Alamofire.request(mutableURLRequest).responseString(encoding: NSUTF8StringEncoding) { (_, _, result: String?, _) -> Void in
            println("服务器返回的内容：\(result!)")
        }
    }

    func toSoapMessage(methodName: String, params: String, paramValues: String) -> String {
        var message: String = String()
        message += "<?xml version=\"1.0\" encoding=\"utf-8\"?>"
        message += "<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/\">"
        message += "<soap:Body>"
        message += "<\(methodName) xmlns=\"http://imccoy.com/webservices/\">"
        message += "<\(params)>\(paramValues)</\(params)>"
        message += "</\(methodName)>"
        message += "</soap:Body>"
        message += "</soap:Envelope>"
        println("请求消息体： \(message)")
        return message
    }

status code: 500,

500是服务器内部错误，要你同事检查一下服务器的web service API处理哪里有问题

打开http://115.29.41.12:83/serForImccoy.asmx?op=isUser ，将你的请求体(setHTTPBody)封装成：

<?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>
    <isUser xmlns="http://imccoy.com/webservices/">
      <json>string</json>
    </isUser>
  </soap:Body>
</soap:Envelope>

然后添加请求头信息：