XML and MIME

Question

I'm having a problem with the new JSE8 application server. We have an AJAX application that uses the Google maps API to retrieve some XML data via this type code (javascript):
var request = GXmlHttp.create();
request.open('GET', '/maps/%tempFile%', true);
request.onreadystatechange = function() {
if (request.readyState == 4) {
alert("request="+request.toString+".");
alert("request.status="+request.status+".");
alert("request.responseXML="+request.responseXML+".");
alert("request.responseText="+request.responseText+".");
alert("request.statusText="+request.statusText+".");
var xmlDoc = request.responseXML;
The problem is that the request.responseXML is null because the application server is returning the XML file as a text file instead of an XML file (so the request.responseText has the data in it).
The problem is that I can't figure out how to set a MIME type so the application server knows to return it as XML. Help!

Answer 1

Yes, we used a properly formatted XML document. I managed to fix it by using a weird workaround...checking the request.responseText length in case the data was read in that way instead of into the request.responseXML structure. Then, I used the Google GXml parse function to stick it in an XML structure for further processing, as shown below. I'm still confused why the Applicaton server did not return it as an XML structure in the first place, though.
// Read the data from maps.xml
var request = GXmlHttp.create();
request.open('GET', '/maps/branch.xml', true);
request.onreadystatechange = function() {
if (request.readyState == 4) {
var xmlDoc = null;
var textLength = parseFloat(request.responseText.length);
if (textLength > 0) {
xmlDoc = GXml.parse(request.responseText);
else {
xmlDoc = request.responseXML;
// obtain the array of markers and loop through it
var markers = xmlDoc.documentElement.getElementsByTagName("branch");