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jopen
9年前发布

iOS Json的解析与创建

+ (NSString *)voiceMessageConentWithEntity:(VMessageEntity *)entity{        NSLog(@"entity.voiceMessage.voicemd5 == %@",entity.voiceMessage.voicemd5);        if (!entity) {            return nil;        }        VChatVoiceEntity *voiceMessage = entity.voiceMessage;        if (!voiceMessage) {            return nil;        }        NSString *voicemd5 = voiceMessage.voicemd5;        NSString *duration = voiceMessage.duration;        if (entity.messageType == VMessageTypeVoice) {            NSMutableDictionary *rootDict = [NSMutableDictionary dictionary];            if (voicemd5) {                [rootDict setObject:voicemd5 forKey:@"md5"];            }            if (duration) {                [rootDict setObject:duration forKey:@"duration"];            }           NSError *error = nil;            NSData *jsonData = [NSJSONSerialization dataWithJSONObject:rootDict options:NSJSONWritingPrettyPrinted error:&error];            if (error) {                NSLog(@"%@", error);            }            NSString *json = [[NSString alloc] initWithData:jsonData encoding:NSUTF8StringEncoding];            return json;        }else{            return nil;        }      }      + (VChatVoiceEntity *)voiceWithJson:(NSString *)json{        if (!json.length) {            return nil;        }        NSData *jsonData = [json dataUsingEncoding:NSUTF8StringEncoding];        NSError *error = nil;        NSDictionary *root = [NSJSONSerialization JSONObjectWithData:jsonData                                                             options:NSJSONReadingMutableLeaves                                                               error:&error];        if (root) {            VChatVoiceEntity *voiceMessage = [[VChatVoiceEntity alloc] init];            voiceMessage.voicemd5 = [root objectForKey:@"md5"];            voiceMessage.duration = [root objectForKey:@"duration"];            return voiceMessage;        }        return nil;      }