How to put file upload limit in gwt client side?

Question

I want to make validation not to upload a file more than 100 MB in my file up loader widget. Currently I am uploading the file and transferring it on server side and there on server side checking the size. Is there any way so that I can check the file size on client side itself so that it will reduce the time required for file transfer to server side

possible duplicate of [javascript file upload size validation](http://stackoverflow.com/questions/3717793/javascript-file-upload-size-validation) — Thihara, Jul 08 '13 at 12:58
check size during upload? You could cut it if it goes over 100mb — JIV, Jul 08 '13 at 13:19
As I write in other question, you can try this: [http://stackoverflow.com/a/31473567/4021734][1] [1]: http://stackoverflow.com/a/31473567/4021734 — svishevsky, Jul 17 '15 at 10:24

score 2 · Accepted Answer · answered Jul 08 '13 at 12:57

2

You can't, because javascript doesn't provide any way to read the contents of a file that is stored locally.

You have to do it on server side. And its always a better option to validate on server side

answered Jul 08 '13 at 12:57

Suresh Atta

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@kedar IMHO No.You have to do it on serverside only .And do not depend on client validation.It can easily by passed. – Suresh Atta Jul 08 '13 at 13:04
@johnchen902 java is tagged because,gwt can code in java and compiles to javascript. – Suresh Atta Jul 08 '13 at 13:49

score 0 · Answer 2 · answered Jul 08 '13 at 13:01

0

You can do that using W3C Files API. There is a GWT wrapper for it at http://www.vectomatic.org/libs/lib-gwt-file.

answered Jul 08 '13 at 13:01

Loša

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How to put file upload limit in gwt client side?

2 Answers2