Some filesystems in linux/unix does not save date stuff, to speed up access...
I am not sure about what tomcat does, but I think he sends the date of the
cached resource...
------------- Segue mensagem original! -------------
De: hanasaki <[EMAIL PROTECTED]>
Data: Wed, 11 Jan 2006 21:44:27 -0600
Para: LIST - Tomcat Users <users@tomcat.apache.org>
Assunto: Last-Modified not updated when file is changed / touched.
Running tomcat 5.5.14 on Linux with:
java -version
java version "1.5.0_06"
Java(TM) 2 Runtime Environment, Standard Edition (build 1.5.0_06-b05)
Java HotSpot(TM) Client VM (build 1.5.0_06-b05, mixed mode)
Files are coming back with unchanged "last modified" dates even after
editing or a unix "touch" These files are being loaded via some Ajax
(see below) - IE6 and Firefox1.5
If the browser cache is cleared, or the referenced page is hit directly,
subsequent hits to the ajaxpage do retrieve the new page off the server.
== call to ajax
<A HREF="pages/main.html" onclick="ajaxpage(this.href, 'content');return
false;">Home</A>
== Javascript / ajax
function ajaxpage(url, containerid) {
var page_request = false
if(window.XMLHttpRequest) {
xmlhttp = new XMLHttpRequest();
// Gecko (Firefox, Moz), KHTML (Konqueror, Safari), Opera,
Internet Explorer 7
} else if(window.ActiveXObject) {
try{
xmlhttp = new ActiveXObject("MSXML2.XMLHTTP");
// Internet Explorer 6
} catch(e) {
xmlhttp = new ActiveXObject("Microsoft.XMLHTTP");
// Internet Explorer 4,5
}
} else {
return false;
}
xmlhttp.onreadystatechange=function() {
loadpage(page_request, containerid)
}
xmlhttp.open('GET', url, true)
xmlhttp.send(null)
}
function loadpage(page_request, containerid) {
if (xmlhttp.readyState == 4 && (xmlhttp.status==200 ||
window.location.href.indexOf("http")==-1)) {
<!-- alert("File was last modified on - "+
xmlhttp.getResponseHeader("Last-Modified")) -->
document.getElementById(containerid).innerHTML=xmlhttp.responseText
}
}
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