目标C从.Net API获取MongoDB ObjectID作为字符串，反之亦然

Question

我必须使用.Net API，它返回并使用MongoDB ObjectId作为结果和参数

例如，服务器返回

    _id": {
            "Timestamp": 1478679428,
            "Machine": 1031587,
            "Pid": 9124,
            "Increment": 2344035,
            "CreationTime": "/Date(1478679428000)/"
        }

以对象 ID 值ObjectId("5822db840fbda323a423c463")的NSDictionary形式

我的问题是：如何将上述NSDictionary _id转换为目标 C 中的字符串值5822db840fbda323a423c463？

反之亦然，将NSString 5822db840fbda323a423c463转换为NSDictionary以作为 api 参数发送？

请注意：我不能更改 api，只能使用它

任何帮助将不胜感激

Answer 1

我发布我的工作结果作为答案，希望以后对其他人有所帮助

用于将NSDictionary从 API 结果序列化为NSString

- (NSString *)NSStringFromNSDictionary:(NSDictionary *)dict
{
    long Timestamp = [[dict objectForKey:@"Timestamp"] longValue];
    long Machine = [[dict objectForKey:@"Machine"] longValue];
    long Pid = [[dict objectForKey:@"Pid"] longValue];
    long Increment = [[dict objectForKey:@"Increment"] longValue];
    NSString *oid = [NSString stringWithFormat:@"%08lx%06lx%04lx%06lx", Timestamp, Machine, Pid, Increment];
    return oid;
}

用于以NSDictionary的形式将NSString序列化回.Net Mongo ObjectId

- (NSDictionary *)NSStringFromNSDictionary:(NSString *)oid
{
    long Timestamp = strtol([[oid substringToIndex:8] UTF8String], NULL, 16);
    long Machine = strtol([[oid substringWithRange:NSMakeRange(8,6)] UTF8String], NULL, 16);
    long Pid = strtol([[oid substringWithRange:NSMakeRange(14,4)] UTF8String], NULL, 16);
    long Increment = strtol([[oid substringFromIndex:18] UTF8String], NULL, 16);

    NSDictionary * dict = @{@"Timestamp": [NSNumber numberWithLong:Timestamp]
                        ,@"Machine": [NSNumber numberWithLong:Machine]
                        ,@"Pid": [NSNumber numberWithLong:Pid]
                        ,@"Increment": [NSNumber numberWithLong:Increment]
                        ,@"CreationTime": [NSString stringWithFormat:@"/Date(%ld)/",Timestamp*1000]
                        };
    return dict;
}