AFURLSessionManager 上传下载使用

Creating a Download Task

    NSURLSessionConfiguration *configuration = [NSURLSessionConfiguration defaultSessionConfiguration];      AFURLSessionManager *manager = [[AFURLSessionManager alloc] initWithSessionConfiguration:configuration];            NSURL *URL = [NSURL URLWithString:@"http://example.com/download.zip"];      NSURLRequest *request = [NSURLRequest requestWithURL:URL];            NSURLSessionDownloadTask *downloadTask = [manager downloadTaskWithRequest:request progress:nil destination:^NSURL *(NSURL *targetPath, NSURLResponse *response) {          NSURL *documentsDirectoryURL = [[NSFileManager defaultManager] URLForDirectory:NSDocumentDirectory inDomain:NSUserDomainMask appropriateForURL:nil create:NO error:nil];          return [documentsDirectoryURL URLByAppendingPathComponent:[response suggestedFilename]];      } completionHandler:^(NSURLResponse *response, NSURL *filePath, NSError *error) {          NSLog(@"File downloaded to: %@", filePath);      }];      [downloadTask resume];  

Creating an Upload Task

    NSURLSessionConfiguration *configuration = [NSURLSessionConfiguration defaultSessionConfiguration];      AFURLSessionManager *manager = [[AFURLSessionManager alloc] initWithSessionConfiguration:configuration];            NSURL *URL = [NSURL URLWithString:@"http://example.com/upload"];      NSURLRequest *request = [NSURLRequest requestWithURL:URL];            NSURL *filePath = [NSURL fileURLWithPath:@"file://path/to/image.png"];      NSURLSessionUploadTask *uploadTask = [manager uploadTaskWithRequest:request fromFile:filePath progress:nil completionHandler:^(NSURLResponse *response, id responseObject, NSError *error) {          if (error) {              NSLog(@"Error: %@", error);          } else {              NSLog(@"Success: %@ %@", response, responseObject);          }      }];      [uploadTask resume];  

Creating an Upload Task for a Multi-Part Request, with Progress

    NSMutableURLRequest *request = [[AFHTTPRequestSerializer serializer] multipartFormRequestWithMethod:@"POST" URLString:@"http://example.com/upload" parameters:nil constructingBodyWithBlock:^(id<AFMultipartFormData> formData) {              [formData appendPartWithFileURL:[NSURL fileURLWithPath:@"file://path/to/image.jpg"] name:@"file" fileName:@"filename.jpg" mimeType:@"image/jpeg" error:nil];          } error:nil];            AFURLSessionManager *manager = [[AFURLSessionManager alloc] initWithSessionConfiguration:[NSURLSessionConfiguration defaultSessionConfiguration]];            NSURLSessionUploadTask *uploadTask;      uploadTask = [manager                    uploadTaskWithStreamedRequest:request                    progress:^(NSProgress * _Nonnull uploadProgress) {                        // This is not called back on the main queue.                        // You are responsible for dispatching to the main queue for UI updates                        dispatch_async(dispatch_get_main_queue(), ^{                            //Update the progress view                            [progressView setProgress:uploadProgress.fractionCompleted];                        });                    }                    completionHandler:^(NSURLResponse * _Nonnull response, id  _Nullable responseObject, NSError * _Nullable error) {                        if (error) {                            NSLog(@"Error: %@", error);                        } else {                            NSLog(@"%@ %@", response, responseObject);                        }                    }];            [uploadTask resume];  

Creating a Data Task

    NSURLSessionConfiguration *configuration = [NSURLSessionConfiguration defaultSessionConfiguration];      AFURLSessionManager *manager = [[AFURLSessionManager alloc] initWithSessionConfiguration:configuration];            NSURL *URL = [NSURL URLWithString:@"http://httpbin.org/get"];      NSURLRequest *request = [NSURLRequest requestWithURL:URL];            NSURLSessionDataTask *dataTask = [manager dataTaskWithRequest:request completionHandler:^(NSURLResponse *response, id responseObject, NSError *error) {          if (error) {              NSLog(@"Error: %@", error);          } else {              NSLog(@"%@ %@", response, responseObject);          }      }];      [dataTask resume];  

Request Serialization

Request serializers create requests from URL strings, encoding parameters as either a query string or HTTP body.

    NSString *URLString = @"http://example.com";      NSDictionary *parameters = @{@"foo": @"bar", @"baz": @[@1, @2, @3]};  

Query String Parameter Encoding

1. [[AFHTTPRequestSerializer serializer] requestWithMethod:@"GET" URLString:URLString parameters:parameters error:nil];  

GET http://example.com?foo=bar&baz[]=1&baz[]=2&baz[]=3

address:https://github.com/AFNetworking/AFNetworking