issuing a AJAX request to a servlet

Hi all,

I try to asynchronously pass a request to a servlet using the XMLHttpRequestObject.

When I use method GET in open(), the request seems to be sent, but the servlet receives an empty(null) request and it returns a default response (not the required one).

When I use method POST, I also try to set the request header using:
XMLHttpRequestObject.setRequestHeader('Content-Type','application/x-www-form-urlencoded');
However, in this case the XMLHttpRequestObject.status = 405. Hence, I'm afraid the request header is not set properly - maybe I set it the wrong way.

When I try to display the response headers using: document.write("Get All Response Headers: " + XMLHttpRequestObject.getAllResponseHeaders);
...the output is:
Get All Response Headers: function getAllResponseHeaders() { [native code] }

If I try to display the changes in the XMLHttpRequestObject status, I get the following output:

OPENED state (1)
HEADERS RECEIVED state (2)
LOADING state (3)
DONE state (4)
state: 1
HEADERS RECEIVED state (2)
LOADING state (3)
DONE state (4)
state: 2
LOADING state (3)
DONE state (4)
state: 3
LOADING state (3)
DONE state (4)
state: 3
LOADING state (3)
DONE state (4)
state: 3
LOADING state (3)
DONE state (4)
state: 3
LOADING state (3)
DONE state (4)
state: 3
LOADING state (3)
DONE state (4)
state: 3
DONE state (4)
state: 4


I read the XMLHttpRequestObject documentation: http://www.w3.org/TR/XMLHttpRequest/#xmlhttprequest, but I still cannot figure out what the problem is.


I'll be happy if you could give me any hint about what could be wrong or how I can continue debugging. I already ran out of ideas.

Thanks,
Pesho
Edit/Delete Message

 

See:

http://ajaxforums.net/index.php?topic=871.0

 

thanks,
I resolved the problem already
It turned out that I have to send an empty request if I use the GET method. The actual request string should be plugged as input parameter in the open() method.

best,
Pesho