Objective c NSURLSessionTask的AFNetworking 1.x到3.x迁移？

我有一个旧项目，它不是在iOS 9中工作。我已经阅读了AFNetworking的官方文档，并完成了大部分迁移

网络管理员：

_requestManager = [[AFHTTPSessionManager alloc]initWithBaseURL:[NSURL URLWithString:baseURL ]];
//here we can set the request header as the access token once we have logged in.
AFHTTPRequestSerializer *requestSerializer = [AFHTTPRequestSerializer serializer];
AFHTTPResponseSerializer *responseSerializer = [AFHTTPResponseSerializer serializer];
[_requestManager setRequestSerializer:requestSerializer];
[_requestManager setResponseSerializer:responseSerializer];

早期版本：

// 2. Create an `NSMutableURLRequest`.
NSMutableURLRequest *request =
    [[NetworkManager sharedInstance].requestManager.requestSerializer multipartFormRequestWithMethod:@"POST" URLString:fullPath
                                                                                          parameters:nil
                                                                           constructingBodyWithBlock: ^(id <AFMultipartFormData> formData) {
    NSString *fileName = [NSString stringWithFormat:@"%@.caf", theAudioItem.media_item_name];
    [formData appendPartWithFileData:audioData name:theAudioItem.media_item_name fileName:fileName mimeType:@"audio/caf"];
}];

// 3. Create and use `AFHTTPRequestOperationManager` to create an `AFHTTPRequestOperation` from the `NSMutableURLRequest` that we just created.
AFHTTPRequestOperation *operation =
    [[NetworkManager sharedInstance].requestManager HTTPRequestOperationWithRequest:request
                                                                            success: ^(AFHTTPRequestOperation *operation, id responseObject) {
    result(YES, @"");
} failure: ^(AFHTTPRequestOperation *operation, NSError *error) {
    if (operation.responseData) {
        NSDictionary *responseDict = [NSJSONSerialization JSONObjectWithData:operation.responseData options:NSJSONReadingMutableContainers error:nil];

        result(NO, [responseDict valueForKey:@"Message"]);
        [self deleteTmpFilesFromParts:formParts];
    } else {
        result(NO, [NSString stringWithFormat:@"Failed to upload media to %@!", gallery.gallery_name]);
        [self deleteTmpFilesFromParts:formParts];
    }


    result(NO, errorMessage);
}];

// 4. Set the progress block of the operation.
[operation setUploadProgressBlock: ^(NSUInteger __unused bytesWritten,
                                     long long totalBytesWritten,
                                     long long totalBytesExpectedToWrite) {
    DLog(@"progress is %i %lld %lld", bytesWritten, totalBytesWritten, totalBytesExpectedToWrite);
    progress((float)totalBytesWritten / (float)totalBytesExpectedToWrite);
}];

// 5. Begin!
[operation start];

//2。创建一个“NSMutableURLRequest”。
NSMutableURLRequest*请求=
[[NetworkManager sharedInstance].requestManager.requestSerializer multipartFormRequestWithMethod:@“POST”URLString:fullPath
参数：零
构造体WithBlock:^（id formData）{
NSString*文件名=[NSString stringWithFormat:@“%@.caf”，theAudioItem.media_item_name]；
[formData appendPartWithFileData:audioData名称：theAudioItem.media_item_name文件名：fileName mimeType:@“audio/caf”]；
}];
// 3. 创建并使用“AFHTTPRequestOperationManager”从我们刚刚创建的“NSMutableURLRequest”创建“AFHTTPRequestOperation”。
AFHTTPRequestOperation*操作=
[[NetworkManager sharedInstance].requestManager HTTPRequestOperationWithRequest:request
成功：^（AFHTTPRequestOperation*操作，id响应对象）{
结果(是,");；
}失败：^（AFHTTPRequestOperation*操作，NSError*错误）{
if（操作响应数据）{
NSDictionary*responseDict=[NSJSONSerialization JSONObjectWithData:operation.responseData选项：NSJSONReadingMutableContainers错误：nil]；
结果（否，[responseDict valueForKey:@“Message”]）；
[自删除tmpfilesfromparts:formParts]；
}否则{
结果（否，[NSString stringWithFormat:@“未能将媒体上载到%@！”，gallery.gallery_name]）；
[自删除tmpfilesfromparts:formParts]；
}
结果（否，错误消息）；
}];
// 4. 设置操作的进度块。
[operation setUploadProgressBlock:^（nsInteger uu未使用的字节写入，
写了很长很长的TotalBytes，
long long totalBytesExpectedToWrite）{
DLog（@“进度为%i%lld%lld”、BytesWrited、TotalBytesWrited、totalBytesExpectedToWrite）；
进度（（浮动）TotalBytesWrite/（浮动）totalBytesExpectedToWrite）；
}];
// 5. 开始！
[操作启动]；

转换后的响应：（更新了注释，给出了错误）

//没有“AFHTTPRequestSerializer”的可见@interface声明选择器“multipartFormRequestWithMethod:URLString:parameters:constructingBodyWithBlock:”
NSMutableURLRequest*请求=
[[NetworkManager sharedInstance].requestManager.requestSerializer multipartFormRequestWithMethod:@“POST”URLString:完整路径参数：nil
构造体WithBlock:^（id formData）{
NSString*文件名=[NSString stringWithFormat:@“%@.caf”，theAudioItem.media_item_name]；
[formData appendPartWithFileData:audioData名称：theAudioItem.media_item_name文件名：fileName mimeType:@“audio/caf”]；
}];
// 3. 创建并使用“AFHTTPRequestOperationManager”从我们刚刚创建的“NSMutableURLRequest”创建“AFHTTPRequestOperation”。
//“AFHTTPSessionManager”没有可见的@interface声明选择器“HTTPRequestOperationWithRequest:success:failure:”
NSURLSessionTask*操作=
[[NetworkManager sharedInstance].requestManager HTTPRequestOperationWithRequest:request
成功：^（NSURLSessionTask*操作，id响应对象）{
结果(是,");；
}失败：^（NSURLSessionTask*操作，NSError*错误）{
//操作的错误没有responseData
if（操作响应数据）{
NSDictionary*responseDict=[NSJSONSerialization JSONObjectWithData:operation.responseData选项：NSJSONReadingMutableContainers错误：nil]；
结果（否，[responseDict valueForKey:@“Message”]）；
[自删除tmpfilesfromparts:formParts]；
}否则{
结果（否，[NSString stringWithFormat:@“未能将媒体上载到%@！”，gallery.gallery_name]）；
[自删除tmpfilesfromparts:formParts]；
}
//得到回应
结果（否，错误消息）；
}];
// 4. 设置操作的进度块。
//“NSURLSessionTask”没有可见的@interface声明选择器“setUploadProgressBlock:”
[operation setUploadProgressBlock:^（nsInteger uu未使用的字节写入，
写了很长很长的TotalBytes，
long long totalBytesExpectedToWrite）{
DLog（@“进度为%i%lld%lld”、BytesWrited、TotalBytesWrited、totalBytesExpectedToWrite）；
进度（（浮动）TotalBytesWrite/（浮动）totalBytesExpectedToWrite）；
}];
// 5. 开始！
//“NSURLSessionTask”没有可见的@interface声明选择器“start”
[操作启动]；
AFHTTPSessionManager的等效代码是：

NSURLSessionTask *task = [[[NetworkManager sharedInstance] requestManager] POST:fullPath parameters:nil constructingBodyWithBlock:^(id<AFMultipartFormData>  _Nonnull formData) {
    NSString *fileName = [NSString stringWithFormat:@"%@.caf", theAudioItem.media_item_name];
    [formData appendPartWithFileData:audioData name:theAudioItem.media_item_name fileName:fileName mimeType:@"audio/caf"];
} progress:^(NSProgress * _Nonnull uploadProgress) {
    NSLog(@"%.3f", uploadProgress.fractionCompleted);
} success:^(NSURLSessionDataTask * _Nonnull task, id  _Nullable responseObject) {
    // success
} failure:^(NSURLSessionDataTask * _Nullable task, NSError * _Nonnull error) {
    // failure

    // if you need to process the `NSData` associated with this error (if any), you'd do:

    NSData *data = error.userInfo[AFNetworkingOperationFailingURLResponseDataErrorKey];
    if (data) { ... }
}];

NSURLSessionTask*任务=[[NetworkManager sharedInstance]requestManager]POST:完整路径参数：nil constructingBodyWithBlock:^（id非空formData）{
NSString*文件名=[NSString stringWithFormat:@“%@.caf”，theAudioItem.media_item_name]；
[formData appendPartWithFileData:audioData名称：theAudioItem.media_item_name文件名：fileName mimeType:@“audio/caf”]；
}进度：^（NSProgress*_非空上传进度）{
NSLog（@“%.3f”，上载进度。已完成分段）；
}成功：^（NSURLSessionDataTask*_非空任务，id_可空响应对象）{
//成功
}失败：^（NSURLSessionDataTask*_可空任务，NSError*_非空错误）{
//失败
//如果需要处理与此错误相关联的“NSData”（如果有），请执行以下操作：
NSData*data=error.userInfo[AFNetworkingOpe
NSURLSessionTask *task = [[[NetworkManager sharedInstance] requestManager] POST:fullPath parameters:nil constructingBodyWithBlock:^(id<AFMultipartFormData>  _Nonnull formData) {
    NSString *fileName = [NSString stringWithFormat:@"%@.caf", theAudioItem.media_item_name];
    [formData appendPartWithFileData:audioData name:theAudioItem.media_item_name fileName:fileName mimeType:@"audio/caf"];
} progress:^(NSProgress * _Nonnull uploadProgress) {
    NSLog(@"%.3f", uploadProgress.fractionCompleted);
} success:^(NSURLSessionDataTask * _Nonnull task, id  _Nullable responseObject) {
    // success
} failure:^(NSURLSessionDataTask * _Nullable task, NSError * _Nonnull error) {
    // failure

    // if you need to process the `NSData` associated with this error (if any), you'd do:

    NSData *data = error.userInfo[AFNetworkingOperationFailingURLResponseDataErrorKey];
    if (data) { ... }
}];