我正试图从NSURLConnection转移到NSURLSession以获取SOAP帖子，但NSURLSessionDataDelegate似乎有问题。
以下是NSURLConnection中运行良好的旧代码：
let soapMessage = "<?xml version='1.0' encoding='UTF-8'?><SOAP-ENV:Envelope xmlns:SOAP-ENV='http://schemas.xmlsoap.org/soap/envelope/' xmlns:ns1='http://tempuri.org/'><SOAP-ENV:Body><ns1:get_Countries/></SOAP-ENV:Body></SOAP-ENV:Envelope>"
print("Soap Packet is (soapMessage)")
let urlString = "https://example.com/Service.svc"
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.addValue("http://tempuri.org/IService/get_Countries", forHTTPHeaderField: "SoapAction")
theRequest.HTTPMethod = "POST"
theRequest.HTTPBody = soapMessage.dataUsingEncoding(NSUTF8StringEncoding, allowLossyConversion: false)
print("Request is (theRequest.allHTTPHeaderFields!)")
let connection = NSURLConnection(request: theRequest, delegate: self, startImmediately: false)
connection?.start()
然后，此代码使用NSURLConnectionDelegate，工作正常，如下所示：
func connection(connection: NSURLConnection!, didReceiveResponse response: NSURLResponse!) {
MutableData.length = 0;
let httpresponse = response as? NSHTTPURLResponse
print("status (httpresponse?.statusCode)")
//print("headers (httpresponse?.allHeaderFields)")
}
func connection(connection: NSURLConnection!, didReceiveData data: NSData!) {
MutableData.appendData(data)
}
func connection(connection: NSURLConnection, didFailWithError error: NSError) {
NSLog("Error with Soap call: %@", error)
}
func connectionDidFinishLoading(connection: NSURLConnection!) {
let xmlParser = NSXMLParser(data: MutableData)
xmlParser.delegate = self
xmlParser.parse()
xmlParser.shouldResolveExternalEntities = true
}
func connection(connection: NSURLConnection, willSendRequestForAuthenticationChallenge challenge: NSURLAuthenticationChallenge) {
if challenge.protectionSpace.authenticationMethod == NSURLAuthenticationMethodServerTrust && challenge.protectionSpace.host == "example.com" {
NSLog("yep")
let credential = NSURLCredential(trust: challenge.protectionSpace.serverTrust!)
challenge.sender!.useCredential(credential, forAuthenticationChallenge: challenge)
} else {
NSLog("nope")
challenge.sender!.performDefaultHandlingForAuthenticationChallenge!(challenge)
}
}
所以这些代码都很好用，仅供参考，这样你就可以看到我过去做了什么，以及API确实有效的事实！但是，如果我转而使用NSURLSession和NSURLSessionDataDelegate，那么我就无法使其正常工作。
这是新代码：
let soapMessage = "<?xml version='1.0' encoding='UTF-8'?><SOAP-ENV:Envelope xmlns:SOAP-ENV='http://schemas.xmlsoap.org/soap/envelope/' xmlns:ns1='http://tempuri.org/'><SOAP-ENV:Body><ns1:get_Countries/></SOAP-ENV:Body></SOAP-ENV:Envelope>"
print("Soap Packet is (soapMessage)")
let urlString = "https://example.com/Service.svc"
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.addValue("http://tempuri.org/IService/get_Countries", forHTTPHeaderField: "SoapAction")
theRequest.HTTPMethod = "POST"
theRequest.HTTPBody = soapMessage.dataUsingEncoding(NSUTF8StringEncoding, allowLossyConversion: false)
print("Request is (theRequest.allHTTPHeaderFields!)")
let config = NSURLSessionConfiguration.defaultSessionConfiguration()
let session = NSURLSession(configuration:config, delegate: self, delegateQueue: NSOperationQueue.mainQueue())
let task = session.dataTaskWithRequest(theRequest)
task.resume()
我使用的代理是NSURLSessionDelegate、NSURLSessionDataDelegate:
func URLSession(session: NSURLSession, didReceiveChallenge challenge: NSURLAuthenticationChallenge, completionHandler: (NSURLSessionAuthChallengeDisposition, NSURLCredential?) -> Void) {
print("Am in NSURLSessionDelegate didReceiveChallenge")
if challenge.protectionSpace.authenticationMethod == NSURLAuthenticationMethodServerTrust && challenge.protectionSpace.host == "example.com" {
NSLog("yep authorised")
let credential = NSURLCredential(trust: challenge.protectionSpace.serverTrust!)
challenge.sender!.useCredential(credential, forAuthenticationChallenge: challenge)
} else {
NSLog("nope")
challenge.sender!.performDefaultHandlingForAuthenticationChallenge!(challenge)
}
}
func URLSessionDidFinishEventsForBackgroundURLSession(session: NSURLSession) {
print("Am in URLSessionDidFinishEventsForBackgroundURLSession")
let xmlParser = NSXMLParser(data: MutableData)
xmlParser.delegate = self
xmlParser.parse()
xmlParser.shouldResolveExternalEntities = true
}
func URLSession(session: NSURLSession, didBecomeInvalidWithError error: NSError?) {
print("error of (error)")
}
func URLSession(session: NSURLSession, dataTask: NSURLSessionDataTask, didReceiveResponse response: NSURLResponse, completionHandler: (NSURLSessionResponseDisposition) -> Void) {
print("Am in didReceiveResponse")
MutableData.length = 0
}
func URLSession(session: NSURLSession, dataTask: NSURLSessionDataTask, didReceiveData data: NSData) {
print("Am in didReceiveData")
MutableData.appendData(data)
}
func URLSession(session: NSURLSession, task: NSURLSessionTask, didCompleteWithError error: NSError?) {
print("error of (error)")
}
所以，当我运行代码时，我会得到输出：
"我在NSURLSessionDelegate didReceiveChallenge"是授权的">
因此，它进入了didReceiveChallenge罚款，并且似乎正在授权HTTPS安全证书罚款，但随后没有发生任何进一步的事情，它没有做任何其他事情，我希望它进入didReceReceiveResponse，然后进入didRReceiveData，但根本没有发生任何其他事情。
所以我被卡住了，我当然可以继续使用NSURLConnection，因为它一切都很好，但我想了解NSURLSession，尤其是我哪里出了问题。所以，如果有人能帮忙，那就太好了。
感谢
如果其他人也有同样的问题，我会解决这个问题。问题是我没有在didReceiveChallenge中使用completionHandler，并且didReceReceiveResponse委派
func URLSession(session: NSURLSession, dataTask: NSURLSessionDataTask, didReceiveResponse response: NSURLResponse, completionHandler: (NSURLSessionResponseDisposition) -> Void) {
completionHandler(NSURLSessionResponseDisposition.Allow(//.Cancel，如果要停止下载}