Ios 无法在AFNetworking POST请求上设置HTTP正文

我正在尝试使用AFNetworking对http主体执行POST请求。我用了这个答案

  NSString *urlString = [NSString stringWithFormat:@"my-url"];
  NSString *parameterData = [NSString stringWithFormat:@"request_type=get_story_nids&story_type=%@&story_number=%@", section, count];

  NSURL *url = [NSURL URLWithString:urlString];
  NSMutableURLRequest *request = [NSMutableURLRequest requestWithURL:url];
  [request setHTTPMethod:@"POST"];
  [request setHTTPBody:[parameterData dataUsingEncoding:NSUTF8StringEncoding]];
  [request setValue:@"application/json" forHTTPHeaderField:@"Accept"];
  [request setValue:@"application/json" forHTTPHeaderField:@"content-type"];
  AFHTTPRequestOperation *op = [[AFHTTPRequestOperation alloc] initWithRequest:request];
        op.responseSerializer = [AFJSONResponseSerializer serializer];
        [op setCompletionBlockWithSuccess:^(AFHTTPRequestOperation *operation, id result) {
              completionBlock(nids,nil);  
        } failure:^(AFHTTPRequestOperation *operation, NSError *error) {
            completionBlock(nil, error);
        }];

我将断点放在op setCompletionBlockWithSuccess的完成块中，它甚至没有命中它

如果有帮助，做什么

NSMutableData* result = [[NSURLConnection sendSynchronousRequest:request   returningResponse:&response error:&error] mutableCopy];

工作，并给我正确的数据

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有什么想法吗？

将断点添加到NSURL*url=[NSURL URLWithString:urlString]；并检查您是否得到正确的url如果您得到的url为空，然后尝试以下代码

NSURL *url = [[NSURL alloc] initWithString:[urlString stringByAddingPercentEscapesUsingEncoding:NSASCIIStringEncoding]];
NSLog(@"url = %@",url); 

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我认为您没有将操作添加到操作队列。您可以在此处找到一个示例：

您还可以将AFNetworking正在处理的所有操作添加到日志中

// Add the operation to a queue
// It will start once added
NSOperationQueue *operationQueue = [[NSOperationQueue alloc] init];
[operationQueue addOperation:op];