AFNetworking 下载循环失去身份验证

Question

因此，在进入主屏幕之前，我确实在 iOS 应用程序中下载了多个视频文件，并且为此使用了 AFNetworking 2。如果我必须下载一个文件，一切都很好，但是当我必须下载多个文件时，一些文件会因此错误而失败，它并不总是相同的文件，它似乎是随机的.. :

错误：错误域=com.alamofire.error.serialization.response Code=-1011 “请求失败：未经授权 (401)” UserInfo=0x7ff943f4fcb0 {NSLocalizedDescription=请求失败：未经授权 (401)，com.alamofire.serialization。 response.error.response=

假设我正在使用此代码：

MainView *mainViewController = [[MainView alloc] init];

NSURLCredential *credential = [NSURLCredential credentialWithUser:AUTH_USERNAME2 password:AUTH_PASSWORD2 persistence:NSURLCredentialPersistenceForSession];

NSFileManager *fileManager = [NSFileManager defaultManager];
[fileManager changeCurrentDirectoryPath:self.topVideoPath];


__block int countVideos = 0;
__block int totalvideos = [videoItems count];
for (int i = 0; i < [videoItems count]; i++){

   NSLog(@"dict array : %@" , self.dictArray);
   NSMutableDictionary *itemDict = [self.dictArray objectAtIndex:i];
   NSURL *url = [NSURL URLWithString:[itemDict objectForKey:@"video"]];
   NSString *videoString = [itemDict objectForKey:@"video"];
   NSString *specificPath = [[fileManager currentDirectoryPath] stringByAppendingPathComponent:[NSString stringWithFormat:@"%@.dat", [itemDict objectForKey:@"id"]]];
   TopItem *item = [videoItems objectAtIndex:i];

            if (![videoString isEqualToString:@""]) {

                [fileManager changeCurrentDirectoryPath:self.topVideoPath];

                NSString *moviePath = [[fileManager currentDirectoryPath] stringByAppendingPathComponent:[NSString stringWithFormat:@"Movie%@.mp4", [itemDict objectForKey:@"id"]]];
                NSString *correctMoviePath = [NSString stringWithFormat:@"KyoskSkeleton/TopVideo/Movie%@.mp4", [itemDict objectForKey:@"id"]];

                AFHTTPRequestOperation *operation = [[AFHTTPRequestOperation alloc] initWithRequest:[NSURLRequest requestWithURL:url]];
                [operation setCredential:credential];
                operation.outputStream = [NSOutputStream outputStreamToFileAtPath:moviePath append:NO];
                [operation setDownloadProgressBlock:^(NSUInteger bytesRead, long long totalBytesRead, long long totalBytesExpectedToRead) {

                    float progress = ((float)totalBytesRead) / totalBytesExpectedToRead;
                    NSLog(@"The downloading progress : %f", progress);


                }];
                [operation setCompletionBlockWithSuccess:^(AFHTTPRequestOperation *operation, id responseObject) {

                    countVideos = countVideos + 1;

                    NSLog(@"specific path : %@", specificPath);
                   [NSKeyedArchiver archiveRootObject:item toFile:specificPath];

                    if (countVideos == totalvideos ){
                    mainViewController.topScrollViewContent = self.topScrollViewContent;  
                        if ([self.responseDelegate respondsToSelector:@selector(pushController:)]) {
                            [self.responseDelegate performSelector:@selector(pushController:) withObject:mainViewController];
                        }
                    }
                } failure:^(AFHTTPRequestOperation *operation, NSError *error) {
                    NSLog(@"Not Downloaded");
                    NSLog(@"Error : %@", error);

                    countVideos = countVideos + 1;
                }];

                [operation start];
}
}

有人知道怎么回事吗？

提前致谢！

Answer 1

最后我用 maxConcurrentOperationCount = 3 的 NSOperationque 修复了它，所以同时只下载了 3 个视频。可能是服务器在连接长而多时遇到了问题。