如何在使用AFHTTPSessionManager发送POST请求时向参数发送空白数据

// 创建AFHTTPSessionManager对象
AFHTTPSessionManager *manager = [AFHTTPSessionManager manager];

// 设置请求的URL地址
NSString *urlString = @"http://example.com/api/post";
NSURL *url = [NSURL URLWithString:urlString];

// 创建NSMutableDictionary对象，用于存储请求的参数
NSMutableDictionary *parameters = [NSMutableDictionary dictionary];

// 设置需要发送的参数及其对应的值
[parameters setObject:@"" forKey:@"param1"];

// 将参数转换为NSData类型，并设置为请求体
NSData *requestData = [NSJSONSerialization dataWithJSONObject:parameters options:0 error:nil];
NSMutableURLRequest *request = [NSMutableURLRequest requestWithURL:url];
[request setHTTPMethod:@"POST"];
[request setHTTPBody:requestData];

// 发送请求
NSURLSessionDataTask *task = [manager dataTaskWithRequest:request completionHandler:^(NSURLResponse *response, id responseObject, NSError *error) {
    if (error) {
        NSLog(@"Error: %@", error);
    } else {
        NSLog(@"Response: %@", responseObject);
    }
}];
[task resume];