File upload progress bar

answered 2018-01-17 00:36:30 +0800

takach
30 ● 2

updated 2018-01-17 01:03:03 +0800

I had the same issue when moving to a new environment, upgrading Java from 7 to 8 and Spring from 3 to 4, also Spring Security. I noticed in browser Developer Tools JS console the following messages:

Refused to display 'http://MYURL/zkau/upload?uuid=zNvPci&dtid=z_b7a&sid=1&maxsize=undefined' in a frame because it set 'X-Frame-Options' to 'deny'.
zk.wpd:1234 POST http://MYURL/zkau/upload?uuid=zNvPci&dtid=z_b7a&sid=1&maxsize=undefined net::ERR_BLOCKED_BY_RESPONSE

I solved the issue according to http://forum.zkoss.org/question/99483/fileupload-not-worked/ using

    <headers>
        <frame-options policy="SAMEORIGIN"/>
    </headers>