Simon, thank you so much. You resolved my problem. On Apr 18, 7:16 pm, Simon Knott <knott.si...@gmail.com> wrote: > Are you aware that SimpleDateFormat is not threadsafe, so you shouldn't > have it as a static variable? > > You might be hitting this issue - > http://www.codefutures.com/weblog/andygrove/2007/10/simpledateformat-... > > Cheers, > Simon > > > > On Wednesday, April 18, 2012 11:47:10 AM UTC+1, senderj wrote: > > > I know it doesn't sounds like a GAE problem, but it is a very simple > > coding and I only encounter this problem in GAE, so I post here for > > help. > > > My java servlet in GAE reads a web site and the problem happens when > > extracting a date from html page and convert into Date object using > > SimpleDateFormat. > > > In servlet static > > static final SimpleDateFormat dff = new SimpleDateFormat("dd/MM/yyyy > > HH:mm"); > > In servlet method > > .... logic to extract date from html as text and stores to String > > ss..... > > try { > > result = dff.parse(ss); > > log.info("ss="+ss); > > log.info("result="+result); > > } catch (ParseException pe) { > > log.warning("parse date exception"); > > }//end try > > > I've checked many times the pattern in dff is correct, and I never get > > "parse date exception" in my log. Instead, here are some examples from > > different runs in my log: > > ss=18/04/2012 10:27 > > result=Fri Apr 27 10:27:00 UTC 2012 > > ss=18/04/2012 09:57 > > result=Sun May 27 09:57:00 UTC 2012 > > ss=18/04/2012 09:55 > > result=Fri May 25 09:55:00 UTC 2012 > > ss=18/04/2012 09:45 > > result=Fri Sep 18 09:45:00 UTC 2015 > > > First of all, it is not always like that. It happens about 10% of my > > runs. Secondly, I have another program reading another web page but > > also parse the date with same logic in GAE, and also encountered the > > same problem with about the same chances. If anybody can figure out > > what's wrong with my code please help.- Hide quoted text - > > - Show quoted text -
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