ios 获取日期（年、月、日、星期、时、分、秒）

//
+(NSDictionary *)getTimeFromDate:(NSDate *)date
{
NSCalendar *calendar = [[NSCalendar alloc] initWithCalendarIdentifier:NSGregorianCalendar];
NSLocale *zhLocale = [[NSLocale alloc] initWithLocaleIdentifier:@"zh_CN"];
[calendar setLocale:zhLocale];
NSDateComponents *comps = [[NSDateComponents alloc] init];
NSInteger unitFlags = NSCalendarUnitYear | NSCalendarUnitMonth | NSCalendarUnitDay | NSCalendarUnitWeekday |
NSCalendarUnitHour | NSCalendarUnitMinute | NSCalendarUnitSecond;
comps = [calendar components:unitFlags fromDate:date];

NSDictionary *result = @{
@"year":[NSNumber numberWithInt:[comps year]],
@"month":[NSNumber numberWithInt:[comps month]],
@"day":[NSNumber numberWithInt:[comps day]],
@"hour":[NSNumber numberWithInt:[comps hour]],
@"minute":[NSNumber numberWithInt:[comps minute]],
@"second":[NSNumber numberWithInt:[comps second]],
@"week":[NSNumber numberWithInt:[comps weekday] - 1]
};
return result;
}