On 07.11.2010, at 23:07, laurent laffont wrote:

On Sun, Nov 7, 2010 at 8:43 PM, Johan Brichau <johan@inceptive.be> wrote:
When I evaluate:

DateAndTime now printString

-> '2010-11-07T20:42:26+01:00'

Sometimes I feel stupid :) Thank you Johan.

Indeed Amazon WS keeps telling me my TimeStamp is not in iso 8601 format. I've tried to encodeForHTTP but then it tells Signature is invalid.... the sample I'm trying to get PBE entry from Amazon:

req := 'Service=AWSECommerceService&AWSAccessKeyId=mykey&Operation=ItemLookup&ItemId=3952334146&Timestamp=', DateAndTime now printString.
sign :=SHA256 hashMessage: 'GET', String crlf, 'ecs.amazonaws.com', String crlf, '/onca/xml',String crlf,req.

(Url absoluteFromText: 'http://webservices.amazon.fr/onca/xml?',req, '&Signature=',sign hex) retrieveContents contentStream.

Wenn did you do the encodeForHTTP? You need it in any case because at least the + sign is an encoded space that will render the date invalid. I think you need do safe url encoding only for the string if it is included in the url not the hash.

On 07 Nov 2010, at 13:50, laurent laffont wrote:

> The other way. For example
>
> DateAndTime now printISO8601
>
> Laurent
>
>
> On Sun, Nov 7, 2010 at 1:28 PM, Johan Brichau <johan@inceptive.be> wrote:
> Laurent,
>
> DateAndTime readFrom: '2008-02-10T12:00:00Z' readStream
>
> Does that yield what you want?
>
> cheers
> Johan
>
> On 06 Nov 2010, at 15:07, laurent laffont wrote:
>
>> Hi,
>>
>> I cannot find which method to use to get a Date in iso 8601 format like '2008-02-10T12:00:00Z' ?
>>
>>
>> Cheers,
>>
>> Laurent Laffont
>>
>> Pharo Smalltalk Screencasts: http://www.pharocasts.com/
>> Blog: http://magaloma.blogspot.com/
>
>