blocks|key|530126|text|我通过以下方式使用它：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|530127|ruby-1.9.2-head+:001+>+require+'date'
+=>+true+
ruby-1.9.2-head+:002+>+fmt+=+"%25m-%25d-%25Y+%25H:%25M:%25S+%25Z"
+=>+"%25m-%25d-%25Y+%25H:%25M:%25S+%25Z"+
ruby-1.9.2-head+:003+>+DateTime.strptime+"10-26-2011+10:16:29+CET",+fmt
+=>+#<DateTime:+2011-10-26T10:16:29%2B01:00+(212186380589/86400,1/24,2299161)>+
ruby-1.9.2-head+:004+>+DateTime.strptime+"10-26-2011+10:16:29+UTC",+fmt
+=>+#<DateTime:+2011-10-26T10:16:29%2B00:00+(212186384189/86400,0/1,2299161)>+
ruby-1.9.2-head+:005+>+DateTime.strptime+"10-26-2011+10:16:29+PST",+fmt
+=>+#<DateTime:+2011-10-26T10:16:29-08:00+(212186412989/86400,-1/3,2299161)>+|code-block|syntax|javascript|530128|这是你想说的吗？|530129|entityMap^0|0|0|0^^$0|@$1|2|3|4|5|6|7|K|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|L|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|M|8|@]|9|@]|A|$]]|$1|I|3|-4|5|6|7|N|8|@]|9|@]|A|$]]]|J|$]]

I use it the following way:

<pre><code>ruby-1.9.2-head :001 &gt; require 'date'
 =&gt; true 
ruby-1.9.2-head :002 &gt; fmt = "%m-%d-%Y %H:%M:%S %Z"
 =&gt; "%m-%d-%Y %H:%M:%S %Z" 
ruby-1.9.2-head :003 &gt; DateTime.strptime "10-26-2011 10:16:29 CET", fmt
 =&gt; #&lt;DateTime: 2011-10-26T10:16:29+01:00 (212186380589/86400,1/24,2299161)&gt; 
ruby-1.9.2-head :004 &gt; DateTime.strptime "10-26-2011 10:16:29 UTC", fmt
 =&gt; #&lt;DateTime: 2011-10-26T10:16:29+00:00 (212186384189/86400,0/1,2299161)&gt; 
ruby-1.9.2-head :005 &gt; DateTime.strptime "10-26-2011 10:16:29 PST", fmt
 =&gt; #&lt;DateTime: 2011-10-26T10:16:29-08:00 (212186412989/86400,-1/3,2299161)&gt; 
</code></pre>

Is it what you mean?

blocks|key|746801|text|这在Rails+5中有效：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|746802|Time.zone.strptime("2017-05-20+18:20:10",+"%25Y-%25m-%25d+%25H:%25M:%25S")|code-block|syntax|javascript|746803|返回指定时区中的时间。|746804|entityMap^0|0|0|0^^$0|@$1|2|3|4|5|6|7|K|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|L|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|M|8|@]|9|@]|A|$]]|$1|I|3|-4|5|6|7|N|8|@]|9|@]|A|$]]]|J|$]]

This works in Rails 5:

<pre><code>Time.zone.strptime("2017-05-20 18:20:10", "%Y-%m-%d %H:%M:%S")
</code></pre>

Returns the time in the specified time zone.

blocks|key|530263|text|至少在Rails4.2(可能是更早的版本，还没有测试过)中，只要你使用Time#strptime而不是DateTime.strptime，当前时区就会被自动应用：|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|530264|>+DateTime.strptime('12/28/2016+5:00+PM',+'%25m/%25d/%25Y+%25H:%25M+%25p')
=>+Wed,+28+Dec+2016+17:00:00+%2B0000

>+Time.strptime('12/28/2016+5:00+PM',+'%25m/%25d/%25Y+%25H:%25M+%25p')
=>+2016-12-28+17:00:00+-0800|code-block|syntax|javascript|530265|entityMap^0|Z|D|1F|H|0|0^^$0|@$1|2|3|4|5|6|7|M|8|@$9|N|A|O|B|C]|$9|P|A|Q|B|C]]|D|@]|E|$]]|$1|F|3|G|5|H|7|R|8|@]|D|@]|E|$I|J]]|$1|K|3|-4|5|6|7|S|8|@]|D|@]|E|$]]]|L|$]]

At least as of Rails 4.2 (maybe earlier, haven't tested) as long as you use <code>Time#strptime</code> instead of <code>DateTime.strptime</code>, the current time zone is automatically applied:

<pre><code>&gt; DateTime.strptime('12/28/2016 5:00 PM', '%m/%d/%Y %H:%M %p')
=&gt; Wed, 28 Dec 2016 17:00:00 +0000

&gt; Time.strptime('12/28/2016 5:00 PM', '%m/%d/%Y %H:%M %p')
=&gt; 2016-12-28 17:00:00 -0800
</code></pre>

blocks|key|746697|text|我正在对这个字符串进行"strptiming“：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|746698|19/05/2014+8:13:26+a.m.|code-block|syntax|javascript|746699|一个本地时间戳，在我的例子中是Auckland+NZ，字符串中没有时区戳，可以看到。|746700|据我所知，Time.strptime使用服务器时区作为基准。|offset|length|style|CODE|746701|在我的情况下，以及一般的良好实践中，我的服务器在UTC时区运行，因此每次解析字符串都会创建一个time对象，time+to+%2B0000+(UTC)：|746702|2014-05-19+08:13:26+%2B0000|746703|然后转换为in_time_zone(Time.zone)，结果如下：|746704|Mon,+19+May+2014+20:13:26+NZST+%2B12:00|746705|可以看出，这比我想要的实际时间晚了12个小时(+UTC偏移量)。|746706|我试着按照上面所说的那样使用%2B'+Auckland',+'...%25Z'技巧，没有做任何更改。然后，我按照上面的方法使用了%2B+'%2B1200',+'...%25Z'技巧，它工作正常。|746707|然而，我担心的是夏季时间，那么解析就会提前一个小时，所以我最终的结论是：|746708|Time.strptime(call_data[:datetime].gsub(/\./,+"").gsub(/am/,+"AM").gsub(/pm/,+"PM")+%2B+(Time.zone.now.time_zone.utc_offset/3600).to_s.ljust(4,'0').rjust(6,'+%2B'),+'%25d/%25m/%25Y+%25I:%25M:%25S+%25p+%25Z').in_time_zone(Time.zone)|746709|结果：|746710|Mon,+19+May+2014+08:13:26+NZST+%2B12:00|746711|它不是特别优雅，但它是有效的。|746712|entityMap^0|0|0|0|5|D|0|0|0|5|N|0|0|0|E|L|1O|I|0|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|1C|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|1D|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|1E|8|@]|9|@]|A|$]]|$1|I|3|J|5|6|7|1F|8|@$K|1G|L|1H|M|N]]|9|@]|A|$]]|$1|O|3|P|5|6|7|1I|8|@]|9|@]|A|$]]|$1|Q|3|R|5|D|7|1J|8|@]|9|@]|A|$E|F]]|$1|S|3|T|5|6|7|1K|8|@$K|1L|L|1M|M|N]]|9|@]|A|$]]|$1|U|3|V|5|D|7|1N|8|@]|9|@]|A|$E|F]]|$1|W|3|X|5|6|7|1O|8|@]|9|@]|A|$]]|$1|Y|3|Z|5|6|7|1P|8|@$K|1Q|L|1R|M|N]|$K|1S|L|1T|M|N]]|9|@]|A|$]]|$1|10|3|11|5|6|7|1U|8|@]|9|@]|A|$]]|$1|12|3|13|5|D|7|1V|8|@]|9|@]|A|$E|F]]|$1|14|3|15|5|6|7|1W|8|@]|9|@]|A|$]]|$1|16|3|17|5|D|7|1X|8|@]|9|@]|A|$E|F]]|$1|18|3|19|5|6|7|1Y|8|@]|9|@]|A|$]]|$1|1A|3|-4|5|6|7|1Z|8|@]|9|@]|A|$]]]|1B|$]]

I was "strptiming" this string:

<pre><code>19/05/2014 8:13:26 a.m.
</code></pre>

A local timestamp, which is in my case is Auckland NZ without a timezone stamp in the string as can be seen.

As best I can tell <code>Time.strptime</code> uses the server timezone as the base.

In my situation, and general good practice, my servers run in UTC timezone so every parse of the string ended up creating a time object, the time to +0000 (UTC):

<pre><code>2014-05-19 08:13:26 +0000
</code></pre>

Then converting to <code>in_time_zone(Time.zone)</code> gave:

<pre><code>Mon, 19 May 2014 20:13:26 NZST +12:00
</code></pre>

Which as can be seen is 12 hours (the UTC offset) later than the actual time I wanted.

I tried to use the <code>+' Auckland', '...%Z'</code> trick as per above without any change.
I then used the <code>+ '+1200', '...%Z'</code> trick as per above which worked correctly.

However I was concerned about summer time, then the parsing would be out by an hour, so this is what I've finshed with:

<pre><code>Time.strptime(call_data[:datetime].gsub(/\./, "").gsub(/am/, "AM").gsub(/pm/, "PM") + (Time.zone.now.time_zone.utc_offset/3600).to_s.ljust(4,'0').rjust(6,' +'), '%d/%m/%Y %I:%M:%S %p %Z').in_time_zone(Time.zone)
</code></pre>

Result:

<pre><code>Mon, 19 May 2014 08:13:26 NZST +12:00
</code></pre>

It's not particularly elegant but it works.

blocks|key|530146|text|您可以使用to_time_in_current_zone将日期转换为时区。例如：|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|530147|Date.strptime('04/07/1988',+'%25m/%25d/%25Y').to_time_in_current_zone|code-block|syntax|javascript|530148|entityMap^0|5|N|0|0^^$0|@$1|2|3|4|5|6|7|M|8|@$9|N|A|O|B|C]]|D|@]|E|$]]|$1|F|3|G|5|H|7|P|8|@]|D|@]|E|$I|J]]|$1|K|3|-4|5|6|7|Q|8|@]|D|@]|E|$]]]|L|$]]

You can convert date to timezone with <code>to_time_in_current_zone</code>. For example:

<pre><code>Date.strptime('04/07/1988', '%m/%d/%Y').to_time_in_current_zone
</code></pre>

blocks|key|530339|text|对于Rails+5之前的版本，以下内容将起作用：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|530340|t0+=+Time.strptime("2018-05-01",+"%25Y-%25m-%25d")+#+Or+whatever
t1+=+Time.zone.now.change(year:+t0.year,+month:+t0.month,+day:+t0.day,+hour:+t0.hour,+min:+t0.min,+sec:+t0.sec,+usec:+t0.usec)|code-block|syntax|javascript|530341|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|I|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|J|8|@]|9|@]|A|$E|F]]|$1|G|3|-4|5|6|7|K|8|@]|9|@]|A|$]]]|H|$]]

For pre Rails 5, the following will work:

<pre><code>t0 = Time.strptime("2018-05-01", "%Y-%m-%d") # Or whatever
t1 = Time.zone.now.change(year: t0.year, month: t0.month, day: t0.day, hour: t0.hour, min: t0.min, sec: t0.sec, usec: t0.usec)
</code></pre>

I have a String which I parse with <code>DateTime.strptime</code>. The Timezone of the Date in the String is CET but Ruby creates an UTC DateTime object which of course has an offset of 2hrs.

Currently I'm working around the issue with <code>DateTime.strptime().change(:offset =&gt; "+0020")</code> but I'm pretty sure this is not the way it's meant to work.

Can someone enlighten me on the correct way to do this?

Strptime with Timezone

服务器

我有一个用DateTime.strptime解析的字符串。字符串中日期的时区是CET，但是Ruby创建了一个UTC DateTime对象，该对象的偏移量当然是2小时。目前，我正在使用DateTime.strptime().change(:offset => "+0020")解决这个问题，但我非常确定这不是它的工作方式。有人能告诉我做这件事的正确方法吗？

问使用时区的Strptime
EN

回答 6

Stack Overflow用户

Stack Overflow用户

Stack Overflow用户

社区

活动

资源

关于

腾讯云开发者

热门产品

热门推荐

更多推荐

问使用时区的StrptimeEN

回答 6

Stack Overflow用户

Stack Overflow用户

Stack Overflow用户

社区

活动

资源

关于

腾讯云开发者

热门产品

热门推荐

更多推荐

问使用时区的Strptime
EN