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From Gary Gregory <GGreg...@seagullsoftware.com>
Subject RE: Commons lang parseDate fails to parse ISO8601 date?
Date Tue, 08 Sep 2009 15:20:19 GMT
Note that you can use Joda-Time [1] for much better date and time support than exists in [lang].


Gary

[1] http://joda-time.sourceforge.net/

> -----Original Message-----
> From: azeckoski@gmail.com [mailto:azeckoski@gmail.com] On Behalf Of Aaron
> Zeckoski
> Sent: Tuesday, September 08, 2009 7:39 AM
> To: Commons Users List
> Subject: Re: Commons lang parseDate fails to parse ISO8601 date?
> 
> sure thing
> https://issues.apache.org/jira/browse/LANG-530
> -AZ
> 
> 
> On Mon, Sep 7, 2009 at 8:23 PM, Henri Yandell<flamefew@gmail.com> wrote:
> > Issue seems to be that DateFormatUtils.ISO_DATETIME objects are
> > FastDateFormat objects; whereas parseDate uses SimpleDateFormat. The
> > former supports "ZZ" whereas the latter does not.
> >
> > Java 1.4 (not sure about later) had 'Z' which meant +0100.
> > FastDateFormat adds 'ZZ' to support the ISO standard of +01:00. ie)
> > presumably your actual value is +0100+0100.
> >
> > Solution is probably to have parseDate use FastDateFormat, though
> > there will always be the issue that getPattern from FastDateFormat may
> > not work with SimpleDateFormat.
> >
> > Could I get you to open up a JIRA issue?
> >
> > http://issues.apache.org/jira/browse/LANG
> >
> > Thanks for finding this,
> >
> > Hen
> >
> > On Thu, Sep 3, 2009 at 5:32 AM, Aaron Zeckoski<azeckoski@gmail.com>
> wrote:
> >> I cannot see why this is failing but here is my code:
> >>
> >>    Date parseDate(String dateStr) {
> >>        Date d = null;
> >>        if (dateStr != null && ! "".equals(dateStr)) {
> >>            try {
> >>                // try to parse the date from ISO8601, general
> >> formats, and RFC-2822
> >>                d = DateUtils.parseDate(dateStr, new String[] {
> >>
> >> DateFormatUtils.ISO_DATETIME_TIME_ZONE_FORMAT.getPattern()
> >>                        });
> >>            } catch (ParseException e) {
> >>                // nothing to do
> >>                log.info("Failed to parse: " + dateStr + ":" + e, e);
> >>                d = null;
> >>            }
> >>        }
> >>        return d;
> >>    }
> >>
> >> The string I am sending in to that method was generated like this:
> >> String isoDateStr =
> DateFormatUtils.ISO_DATETIME_TIME_ZONE_FORMAT.format(date);
> >>
> >> The exception is:
> >> 2009-09-03 13:29:37,644 [399355530@qtp3-2] INFO
> >> search.SOLRSearchService  - Failed to parse:
> >> 2009-09-03T13:29:30+01:00:java.text.ParseException: Unable to parse
> >> the date: 2009-09-03T13:29:30+01:00
> >> java.text.ParseException: Unable to parse the date: 2009-09-
> 03T13:29:30+01:00
> >>        at
> org.apache.commons.lang.time.DateUtils.parseDate(DateUtils.java:285)
> >>        at
> org.steeple.impl.search.SOLRSearchService.parseDate(SOLRSearchService.java
> :412)
> >>        at
> org.steeple.impl.search.SOLRSearchService.execute(SOLRSearchService.java:3
> 11)
> >> ....
> >>
> >> I am open to absolutely any suggestion as I am completely baffled.
> >> -AZ
> >>
> >>
> >> --
> >> Aaron Zeckoski (azeckoski (at) vt.edu)
> >> Senior Research Engineer - CARET - University of Cambridge
> >> https://twitter.com/azeckoski - http://www.linkedin.com/in/azeckoski
> >> http://aaronz-sakai.blogspot.com/ - http://tinyurl.com/azprofile
> >>
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> >>
> >>
> >
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> >
> >
> 
> 
> 
> --
> Aaron Zeckoski (azeckoski (at) vt.edu)
> Senior Research Engineer - CARET - University of Cambridge
> https://twitter.com/azeckoski - http://www.linkedin.com/in/azeckoski
> http://aaronz-sakai.blogspot.com/ - http://tinyurl.com/azprofile
> 
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