I think I should have been more clear. I don't want to load a file
from the users computer. I want to read a file from the directory on
the server where my GWT app lives. I just want to know the options I
have to read this binary file into a byte[]. I am very new with GWT :)
On May 23, 4:53 am,
in general you don't use byte[] or the bynary content of a file directly in the
client side, unless you are making something *really special* like implementing
image filters using html canvas or somthing like that. What are you trying to
do or better, why do you have to read a file into a
Well, it is a binary file with point/spline-data. I need to construct
eventually Path objects out of this data and draw it on a canvas. A
byte[] would be the perfect data structure to hold this data.
On May 23, 3:26 pm, Sebastian Gurin sgu...@softpoint.org wrote:
in general you don't use byte[]
If the goal is to read a file and perform computations on the data,
then that process belongs on the server, where it can be done in Java,
and on a machine that has significantly more horsepower. Process the
data as much as makes sense for your application, then ship the
processed data over to
so I guess it is an array of points and you wish to represent them as byte[].
In the client side, I think byte[], int[] or double[] are the same internally,
since javascript only support a single Number type. Most charting / graphics
libraries will accept a native javascript array of numbers as
See the Google IO games lecture @ 33:50, they discuss this issue in GWT
with binary data transfers:
http://www.youtube.com/watch?v=NNmoEOpGJdk
Sincerely,
Joseph
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they mention passing the binary data using utf strings. I wonder if in the
server side we can use TextResource.getText().getBytes(UTF-8) safely for
that.
Also it uses JavaScript typed arrays (new FLoat32Array) for accssing the array
in javascript but I wonder if that is really neccesary.
Hi,
is it possible to read in a binary file in my GWT Java-code and
convert it into a byte[] ?
Thanks!
Carsten
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Not in GWT proper, and not reliably in all browsers. Start your
reading here:
http://www.google.com/search?q=javascript+file+api
On May 22, 12:42 pm, Carsten carsten.schm...@googlemail.com wrote:
Hi,
is it possible to read in a binary file in my GWT Java-code and
convert it into a byte[] ?
