JSON 写入 (NSConcreteData) 中的无效类型？

Question

我正在使用 AFNetworking post 带有一些数据的音频。我收到以下异常。

*** Terminating app due to uncaught exception 'NSInvalidArgumentException', reason: 'Invalid type in JSON write (NSConcreteData)'

我正在使用此代码..

dict=@{@"access_token":[defaults valueForKey:@"TOKEN"],@"email":email,@"prayer":passData};

if ([NSJSONSerialization isValidJSONObject:dict]) {
        NSLog(@"Proper JSON Object");

    }
    NSError *error;
    NSData *jsonData = [NSJSONSerialization dataWithJSONObject:dict options:NSJSONWritingPrettyPrinted error:&error];

    NSURL *URL = [NSURL URLWithString:url];
    NSMutableURLRequest *request = [NSMutableURLRequest requestWithURL:URL
                                                           cachePolicy:NSURLRequestReloadIgnoringCacheData  timeoutInterval:10];

    [request setHTTPMethod:@"POST"];
    [request setValue: @"application/json" forHTTPHeaderField:@"Content-Type"];
    [request setHTTPBody:jsonData];
 AFHTTPRequestOperation *op = [[AFHTTPRequestOperation alloc] initWithRequest:request];
    op.responseSerializer = [AFJSONResponseSerializer serializerWithReadingOptions:NSJSONReadingAllowFragments];
    [op setCompletionBlockWithSuccess:^(AFHTTPRequestOperation *operation, id responseObject) {}

我需要post这种格式的值

{
    "access_token" = 2cf0d8a66654fa4f;
    email = "";
    prayer =     {
        audio = <63616666 00010000 64657363 00000000 00000020 40e58880 00000000 696d6134 00000000 00000044 00000040 00000002 00000000 6b756b69 00000000 00000000 66726565 0000000>
 98903013 31faae9c bb7b0780 80808080>;
        "category_id" = "";
        description = "";
        "expired_date" = "Expiration Date";
        "is_audio" = 1;
        "is_urgent" = 0;
        "prayer_access_id" = "";
        "prayer_type_id" = 1;
        subject = "";
    };
}

我不知道为什么会这样，我以前用这种格式 posted 值但是当我尝试 post 音频作为数据时，我得到了这个异常。提前致谢

编辑

我在做数据

 NSData *audioFile=[self audioData];
 if (audioFile==nil) {
        [passData setObject:@"" forKey:@"audio"];
        [passData setObject:@"0" forKey:@"is_audio"];

    }else{

        [passData setObject:audioFile forKey:@"audio"];
        [passData setObject:@"1" forKey:@"is_audio"];
    }


-(NSData *)audioData{
    NSArray *dirPaths = NSSearchPathForDirectoriesInDomains(
                                                            NSDocumentDirectory, NSUserDomainMask, YES);
    NSString *docsDir = [dirPaths objectAtIndex:0];
    NSString *soundFilePath = [docsDir
                               stringByAppendingPathComponent:@"recordTest.caf"];

    NSURL *url = [NSURL fileURLWithPath:soundFilePath];
    NSData *audioData=[NSData dataWithContentsOfURL:url];
    return audioData;
}

这是我正在插入的音频文件

Answer 1

您的 Json 文本中存在语法错误。在 http://www.jsoneditoronline.org 上检查它，当你确定它的格式是否正确时再试一次 Json

Answer 2

问题是您不能将 NSData 放入 JSON。 audio 是 NSData。正如 NSJSONSerialization documentation 所说：

An object that may be converted to JSON must have the following properties:

The top level object is an NSArray or NSDictionary.

All objects are instances of NSString, NSNumber, NSArray, NSDictionary, or NSNull.

All dictionary keys are instances of NSString.

Numbers are not NaN or infinity.

如果要在 JSON 中包含 NSData，则必须将其转换为字符串。常用的方法是对其进行 base64 编码（然后在目标位置对 base64 字符串进行解码）。

JSON 写入 (NSConcreteData) 中的无效类型？

Invalid type in JSON write (NSConcreteData)?

json

ios

afnetworking