我这里有这个类,类里面是一个方法,我正在尝试对需要Windows身份验证用户名和密码的API执行NSURLSession。我已按照此处的教程https://gist.github.com/n8armstrong/5c5c828f1b82b0315e24
并想出了这个:
let webservice = "https://api.com"
let config = NSURLSessionConfiguration.defaultSessionConfiguration()
let urlSession = NSURLSession(configuration: config)
class WebService: NSObject {
func loginUser(username: String, password: String) -> Bool {
let userPasswordString = "username@domain.com:Password"
let userPasswordData = userPasswordString.dataUsingEncoding(NSUTF8StringEncoding)
let base64EncodedCredential = userPasswordData!.base64EncodedStringWithOptions([])
let authString = "Basic \(base64EncodedCredential)"
config.HTTPAdditionalHeaders = ["Authorization" : authString]
let requestString = NSString(format:"%@", webservice) as String
let url: NSURL! = NSURL(string: requestString)
let task = urlSession.dataTaskWithURL(url) {
(let data, let response, let error) in
if (response as? NSHTTPURLResponse) != nil {
let dataString = NSString(data: data!, encoding: NSUTF8StringEncoding)
print(dataString)
}
}
task.resume()
return true
}
}
但是当我运行此操作时,我收到401错误:401 - 未经授权:由于凭据无效,访问被拒绝。
我已确认API的网址是否正确。与用户名和密码相同。我做错了什么?
答案 0 :(得分:0)
我能够通过执行以下操作来解决此问题:
var credential: NSURLCredential!
func loginUser(username: String, password: String) -> Bool {
let configuration = NSURLSessionConfiguration.defaultSessionConfiguration()
let session = NSURLSession(configuration: configuration, delegate: self, delegateQueue: nil)
credential = NSURLCredential(user:username, password:password, persistence: .ForSession)
let requestString = NSString(format:"%@", webservice) as String
let url: NSURL! = NSURL(string: requestString)
let task = session.dataTaskWithURL(url, completionHandler: {
data, response, error in
dispatch_async(dispatch_get_main_queue(),
{
if(error == nil)
{
print("Yay!")
}
else
{
print("Naw!")
}
})
})
task.resume()
return true
}
然后添加NSURLSessionDelegate方法:
func URLSession(session: NSURLSession, didReceiveChallenge challenge: NSURLAuthenticationChallenge, completionHandler: (NSURLSessionAuthChallengeDisposition, NSURLCredential?) -> Void) {
if challenge.previousFailureCount > 0
{
completionHandler(NSURLSessionAuthChallengeDisposition.CancelAuthenticationChallenge, nil)
}
else
{
completionHandler(NSURLSessionAuthChallengeDisposition.UseCredential, NSURLCredential(forTrust:challenge.protectionSpace.serverTrust!))
}
}
func URLSession(session: NSURLSession, task: NSURLSessionTask, didReceiveChallenge challenge: NSURLAuthenticationChallenge, completionHandler: (NSURLSessionAuthChallengeDisposition, NSURLCredential?) -> Void) {
completionHandler(NSURLSessionAuthChallengeDisposition.UseCredential,credential)
}