About time format 2016-08-9T10:01:54.123Z 20160809100154.123Z Processing method
I encountered a strange time format today
As in the following format, the time represented by the following two time formats is the same time, which is not difficult to understand
2016-08-9T10:01:54.123Z
20160809100154.123Z
As shown in the picture, this is a picture provided by a netizen, showing the time.
- UTC time converted to GSM time
Then, no matter what, we may not understand this strange time, but the time we will eventually display is Beijing time (if you are from another country, it will be a different matter)
So let’s briefly introduce some basic knowledge about time:
First is UTC: Time Standard Time
Coordinated Universal Time (English: Coordinated Universal Time, France: Temps Universel Coordonné), also known as world unified time, world standard time, and international coordinated time. The abbreviation of English (CUT) and French (TUC) is different, and as a compromise, it is referred to as UTC for short.
Then GMT: Greenwichtime
Universal Time UT is Greenwich Time, the standard time of Greenwich location. A time measurement system based on earth's rotation. The angle of the earth's rotation can be measured by the motion of the local meridian relative to the basic reference point on the earth. In order to measure the rotation of the earth, people selected two basic reference points on the earth: the vernal equinox (see equinox to point) and the peaceful sun. The times determined from this are called the stellar hour and the peaceful sun hour respectively.
Then the following is GST time: that is, Beijing time
Usually the time we store in the database or give users a GST time
Now let's talk about the time above
2016-08-9T10:01:54.123Z
20160809100154.123Z
First of all, the letter T: he indicates the time he followed
The last Z represents the UTC unified time
For milliseconds represented by 123, you can test to change 123 to 1230. The last time you get will increase by 1 second.
Many people search online for what 000Z means, but in fact, it means 0 milliseconds utc unified time
Since we know that Z means UTC unified time, then it will be easier to do.
As above the first expression2016-08-9T10:01:54.123Z
We can get a GST (Beijing time) time in this way, see the following code:
String str ="2016-08-9T10:01:54.123Z";
SimpleDateFormat format = new SimpleDateFormat("yyyy-MM-dd'T'HH:mm: Z");
Date d = (("Z", "UTC"));//Note that it is space + UTC
(d);
The last time we got was: Tue Aug 09 18:01:54 CST 2016
And expression20160809100154.123Z
The conversion method is the same. When formatting knowledge, modify the formatted string as follows: Z
I've encountered a similar problem before, so you can also refer to it
A strange time format: 2016-01-02T16:00:00.000Z