AFURLSessionManager 上传下载使用代码说明

1、下载 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]; 

2、上传 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]; 

3、批量上传 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]; 

4、数据任务 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]; 

5、请求参数设置 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]}; 

总结

以上所述是小编给大家介绍的AFURLSessionManager 上传下载使用代码说明，希望对大家有所帮助，如果大家有任何疑问欢迎给我留言，小编会及时回复大家的！