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How do I get GWT DateTimeFormat to display using the server TimeZone, rather than the client's?

Answer 1

+1 A:

The "easiest" solution (one that doesn't require any communication with the server) is just forcing DateTimeFormat to use a particular timezone (the one your server is in), like this:

String pseudoServerTime = DateTimeFormat.getFullTimeFormat().format(new Date(), TimeZone.createTimeZone(TimeZoneConstants.europeWarsaw());

You can hardcode the timezone string/object somewhere as public static final so that it can be easily changed, if you move/change servers (and the GWT compiler will inline this, so no performance penalty).

Igor Klimer 2010-02-03 04:46:41

Thanks Igro - that was my first guess, although I had just hardcoded the timezone offset. My problem with using the hardcoded offset is that we are currently in daylight savings time here (Sydney, Australia) and when that ends the time will be out again.

RodeoClown 2010-02-03 04:59:39

Answer 2

+1 A:

Will the date be modified on the client? If not do the format on the server and just send over a string value. One last thing. There seems to be some issues with Dates on the client side in GWT. Refer to http://blog.gerardin.info/archives/674

Carnell 2010-02-03 16:52:24

Hi Carnell, the date won't be modified on the client, but it is used in a table for sorting, and is being formatted as "31st of January 2010", so making it a string server-side would prevent the sorting from working.Checking out the link now.Thanks

RodeoClown 2010-02-03 23:46:41

You can pass the Date as a String for display and also pass the numerical value of the Date to use for sorting. Use Date.getTime() to get the long value for the Date. The only thing that sucks about this is that you have to pass another field to the client but it should work.

Carnell 2010-02-04 23:51:47

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How do I get GWT DateTimeFormat to display using the server TimeZone, rather than the client's?

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