附带认证要求的服务无法成功获取Json

Question

附带认证要求的服务无法成功获取Json   http://stackoverflow.com/questions/33108166/nsurlsession-and-authentication-with-credentials
遇到同样问题.https://bookapi.bignerdranch.com/private/courses.json
自己输入账号密码可以看到Json
使用代理方法返回 HTTP Basic: Access denied.NSURLSessionDelegate-(void)URLSession:(NSURLSession *)session didReceiveChallenge:(NSURLAuthenticationChallenge *)challenge completionHandler:(void (^)(NSURLSessionAuthChallengeDisposition, NSURLCredential * _Nullable))completionHandler{
    NSURLCredential *cred = [NSURLCredential credentialWithUser:@"BigNerdRanch" password:@"AchieveNerdvana" persistence:NSURLCredentialPersistencePermanent];
    completionHandler(NSURLSessionAuthChallengeUseCredential,cred);
}先行谢过

Answer 1

如果用的是NSURLSession-(void)URLSession:(NSURLSession *)session didReceiveChallenge:(NSURLAuthenticationChallenge *)challenge
completionHandler:(void (^)(NSURLSessionAuthChallengeDisposition, NSURLCredential * _Nullable))completionHandler
{
    NSString *authMethod = [[challenge protectionSpace] authenticationMethod];
    
    if ([authMethod isEqualToString:NSURLAuthenticationMethodServerTrust]) {
        
        NSURLCredential *credential = [NSURLCredential credentialForTrust:challenge.protectionSpace.serverTrust];
        completionHandler(NSURLSessionAuthChallengeUseCredential,credential);
    } else {
        NSURLCredential *cred = [NSURLCredential credentialWithUser:self.username
                                                           password:self.password
                                                        persistence:NSURLCredentialPersistenceNone];
        [[challenge sender] useCredential:cred forAuthenticationChallenge:challenge];
        completionHandler(NSURLSessionAuthChallengeUseCredential, cred);
    }
}
如果是NSURLConnection- (void)connection:(NSURLConnection *)connection willSendRequestForAuthenticationChallenge:(NSURLAuthenticationChallenge *)challenge{
    if ([challenge.protectionSpace.authenticationMethod isEqualToString:NSURLAuthenticationMethodServerTrust]) {
        NSURLCredential *credential = [NSURLCredential credentialForTrust:challenge.protectionSpace.serverTrust];
        [[challenge sender] useCredential:credential forAuthenticationChallenge:challenge];
    } else {
        if ([challenge previousFailureCount] == 0) {
            if (self.credential) {
                [[challenge sender] useCredential:self.credential forAuthenticationChallenge:challenge];
            } else {
                [[challenge sender] continueWithoutCredentialForAuthenticationChallenge:challenge];
            }
        } else {
            [[challenge sender] continueWithoutCredentialForAuthenticationChallenge:challenge];
        }
    }
}
希望对你有帮助

Answer 2

-(void)URLSession:(NSURLSession *)session didReceiveChallenge:(NSURLAuthenticationChallenge *)challenge
completionHandler:(void (^)(NSURLSessionAuthChallengeDisposition, NSURLCredential * _Nullable))completionHandler
{
    NSString *authMethod = [[challenge protectionSpace] authenticationMethod];
    
    if ([authMethod isEqualToString:NSURLAuthenticationMethodServerTrust]) {
        
        NSURLCredential *credential = [NSURLCredential credentialForTrust:challenge.protectionSpace.serverTrust];
        completionHandler(NSURLSessionAuthChallengeUseCredential,credential);
    } else {
        NSURLCredential *cred = [NSURLCredential credentialWithUser:@"BigNerdRanch"
                                                           password:@"AchieveNerdvana"
                                                        persistence:NSURLCredentialPersistenceNone];
        [[challenge sender] useCredential:cred forAuthenticationChallenge:challenge];
        completionHandler(NSURLSessionAuthChallengeUseCredential, cred);
    }
}测试无效.链接和密码确实是对的.

Answer 3

试试这个，亲测有效- (void)URLSession:(NSURLSession *)session didReceiveChallenge:(NSURLAuthenticationChallenge *)challenge
 completionHandler:(void (^)(NSURLSessionAuthChallengeDisposition disposition, NSURLCredential * _Nullable credential))completionHandler
{
    NSLog(@"did receive challenge method called with task");
    NSString* username = @"BigNerdRanch";
    NSString* password = @"AchieveNerdvana";
    
    
    NSURLSessionAuthChallengeDisposition disposition = NSURLSessionAuthChallengePerformDefaultHandling;
    __block NSURLCredential *credential = nil;
    
    credential = [NSURLCredential credentialWithUser:username password:password persistence:NSURLCredentialPersistenceNone];
    [[challenge sender] useCredential:credential forAuthenticationChallenge:challenge];
    
    if( completionHandler )
    {
        completionHandler(disposition, credential);
    }
}返回--block 回调数据---3593字符:
{"courses":[{"title":"iOS Essentials with Swift","url":"https://training.bignerdranch.com/classes/ios-essentials-with-swift","upcoming":[{"start_date":"2017-04-01","end_date":"2017-04-07","instructors":"Scott Ritchie","location":"Big Nerd Ranch West"},{"start_date":"2017-05-20","end_date":"2017-05-26","instructors":"Scott Ritchie","location":"Big Nerd Ranch West"},{"start_date":"2017-06-17","end_date":"2017-06-23","instructors":"Joseph Dixon","location":"Big Nerd Ranch Stone Mountain"},{"start_date":"2017-07-15","end_date":"2017-07-21","instructors":"Scott Ritchie","location":"Big Nerd Ranch West"},{"start_date":"2017-08-12","end_date":"2017-08-18","instructors":"Scott Ritchie","location":"Big Nerd Ranch West"},{"start_date":"2017-09-09","end_date":"2017-09-15","instructors":"Bolot Kerimbaev","location":"Big Nerd Ranch Stone Mountain"},{"start_date":"2017-10-07","end_date":"2017-10-13","instructors":"Scott Ritchie","location":"Big Nerd Ranch West"},{"start_date":"2017-11-04","end_date":"2017-11-10","instructors":"Scott Ritchie","location":"Big Nerd Ranch West"},{"start_date":"2017-12-09","end_date":"2017-12-15","instructors":"Scott Ritchie","location":"Big Nerd Ranch West"}]},{"title":"Accelerated iOS with Swift","url":"https://training.bignerdranch.com/classes/accelerated-ios-with-swift","upcoming":[{"start_date":"2017-04-24","end_date":"2017-04-28","instructors":"Scott Ritchie","location":"Big Nerd Ranch West"},{"start_date":"2017-08-28","end_date":"2017-09-01","instructors":"Scott Ritchie","location":"Big Nerd Ranch West"},{"start_date":"2017-10-23","end_date":"2017-10-27","instructors":"Joseph Dixon","location":"Big Nerd Ranch Stone Mountain"}]},{"title":"Advanced iOS Bootcamp","url":"https://training.bignerdranch.com/classes/advanced-ios-bootcamp","upcoming":[{"start_date":"2017-05-01","end_date":"2017-05-05","instructors":"Mikey Ward","location":"Big Nerd Ranch Stone Mountain"},{"start_date":"2017-07-17","end_date":"2017-07-21","instructors":"Mikey Ward","location":"Big Nerd Ranch Stone Mountain"},{"start_date":"2017-09-18","end_date":"2017-09-22","instructors":"Mikey Ward","location":"Big Nerd Ranch West"},{"start_date":"2017-12-04","end_date":"2017-12-08","instructors":"Mikey Ward","location":"Big Nerd Ranch West"}]},{"title":"Android Essentials","url":"https://training.bignerdranch.com/classes/android-essentials","upcoming":[{"start_date":"2017-03-06","end_date":"2017-03-10","instructors":"Paul Turner","location":"Big Nerd Ranch West"},{"start_date":"2017-05-15","end_date":"2017-05-19","instructors":"Brian Gardner","location":"Big Nerd Ranch Stone Mountain"},{"start_date":"2017-08-21","end_date":"2017-08-25","instructors":"David Greenhalgh","location":"Big Nerd Ranch Stone Mountain"},{"start_date":"2017-12-04","end_date":"2017-12-08","instructors":"David Greenhalgh","location":"Big Nerd Ranch Stone Mountain"}]},{"title":"Advanced Android","url":"https://training.bignerdranch.com/classes/advanced-android","upcoming":[{"start_date":"2017-04-24","end_date":"2017-04-28","instructors":"Brian Gardner","location":"Big Nerd Ranch Stone Mountain"},{"start_date":"2017-10-16","end_date":"2017-10-20","instructors":"David Greenhalgh","location":"Big Nerd Ranch West"}]},{"title":"Front-End Essentials","url":"https://training.bignerdranch.com/classes/front-end-essentials","upcoming":[{"start_date":"2017-08-14","end_date":"2017-08-18","instructors":"Jonathan Martin","location":"Big Nerd Ranch Stone Mountain"},{"start_date":"2017-10-23","end_date":"2017-10-27","instructors":"Chris Aquino","location":"Big Nerd Ranch Stone Mountain"}]}]}

Answer 4

奇怪还是无效.
NSString *requestString = @"http://bookapi.bignerdranch.com/courses.json";不用验证的链接可以获取
能提供些思路或者源码么
2017-02-28 20:05:06.321 Nerdfeed[30886:3979005] did receive challenge method called with task
2017-02-28 20:05:07.216 Nerdfeed[30886:3979005] HTTP Basic: Access denied.

Answer 5

这是完整的请求，你试试- (void) get
{
    NSMutableString * url = [NSMutableString string];
    [url appendString:@"https://bookapi.bignerdranch.com/private/courses.json"];
    
    NSString *authStr = [NSString stringWithFormat:@"%@:%@", @"BigNerdRanch", @"AchieveNerdvana"];
    NSString *base64String = [[authStr dataUsingEncoding:NSUTF8StringEncoding] base64EncodedStringWithOptions:0];
    NSString *authValue = [NSString stringWithFormat:@"Basic %@", base64String];
    NSDictionary *headers = @{ @"authorization": authValue,
                               @"accept": @"application/json",
                               @"accept": @"text/html",
                               @"cache-control": @"no-cache",
                               @"postman-token": @"0a47efb3-c559-c0f9-8276-87cbdbe76c9d" };
    
    NSMutableURLRequest *request = [[NSMutableURLRequest alloc] init];
    [request setHTTPMethod:@"GET"];
    [request setURL:[NSURL URLWithString:url]];
    [request setCachePolicy:NSURLRequestReloadIgnoringCacheData];
    [request setTimeoutInterval:10];
    [request setHTTPShouldHandleCookies:FALSE];
    [request setAllHTTPHeaderFields:headers];
    
    NSOperationQueue *queue = [NSOperationQueue mainQueue];
    NSURLSessionConfiguration * defaultConfigObject = [NSURLSessionConfiguration defaultSessionConfiguration];
    NSURLSession * session = [NSURLSession sessionWithConfiguration:defaultConfigObject delegate:self delegateQueue:queue];
    NSURLSessionTask *task = [session dataTaskWithRequest:request];
    [task resume];
}

Answer 6

已经成功!!
非常感谢你的大力相助.
经测试
使用NSMutableURLRequest,以及进行对header的设置.是带验证服务通过的关键.
/
NSString *authStr = [NSString stringWithFormat:@"%@:%@", @"BigNerdRanch", @"AchieveNerdvana"];
NSString *base64String = [[authStr dataUsingEncoding:NSUTF8StringEncoding] base64EncodedStringWithOptions:0];
NSString *authValue = [NSString stringWithFormat:@"Basic %@", base64String];
NSDictionary *headers1 = @{ @"authorization": authValue};
 NSMutableURLRequest *request = [[NSMutableURLRequest alloc] init];
[request setAllHTTPHeaderFields:headers];//另外没有添加setTimeoutInterval,因为有可能超时失败
//[request setTimeoutInterval:10]
私信您求个联系方法.
再次感谢你的回答.