ios json结构

    NSString *itemJson = [NSString stringWithFormat:@"{\"Id\":\"%@\",\"ChanelNum\":\"%@\",\"ChannelId\":\"%@\",\"Name\":\"%@\",\"RecognitionPictureName\":\"%@\",\"RecognitionPictureName2\":\"%@\",\"AssetBundleName\":\"%@\"}",ID,ChanelNum,ChannelId,Name,RecognitionPictureName,RecognitionPictureName2,AssetBundleName];

    NSData *jsonData = [itemJson dataUsingEncoding:NSUTF8StringEncoding];