Re: parsererror with XmlHtpp-post-request

This time I'll send it to the list:

Here is post code that works in my widget, notice I am manually

populating the "variables" var which is being sent

function submitForm(theForm, div, url) {

var variables = "version="+version+"&";

for(i=0;i < theForm.length; i++){

if(theForm[i].type == 'radio' || theForm[i].type == 'checkbox') {

if(theForm[i].checked == true) {

variables += theForm[i].name +"="+ theForm[i].value + "&";

}

} else if(theForm[i].type != "button") {

variables += theForm[i].name +"="+ theForm[i].value + "&";

}

}

var post = new XMLHttpRequest();

post.open("POST", url, false);

post.send(variables);

var myresponse = post.responseXML.documentElement;

if (response) {

document.getElementById("Prefs").innerHTML = "<div class='body'

align='left' style='padding-left:5px'>" + post.responseText +

"</div>";

} else {

document.getElementById("Prefs").innerHTML = "<div class='body'

align='left' style='padding-left:5px'>An error has occured.</div>";

}

}

On 8/28/06, Todd Ditchendorf <email@hidden> wrote:

Hmm... if you're not running Leopard, then the situation I described below

is probably not affecting you.

However, there are some changes I would recommend you make to your

_javascript_. I can't seem to find any docs on this at the moment, but I'm

pretty certain that you must call open() before you call setRequestHeader()

for that method to take any effect. So I don't think your calls to

setRequestHeader() are having the desired effect.

Also, I would probably trust WebKit to get the content-length header right

rather than setting it manually. Especially since it sounds like the error

you are getting involves the length of the request, but who knows?

xmlhttp.open('POST', myUrl, true);

xmlhttp.setRequestHeader("Content-Type",

"application/x-www-form-urlencoded");

That apple doc is really just meant to be an intro to the XMLHttpRequest

object (and it's a very good one IMHO). For more a detailed spec, you might

try the new W3C working draft:

http://www.w3.org/TR/XMLHttpRequest/#examples

Hope that helps.

Todd Ditchendorf

Software Engineer

email@hidden

On Aug 28, 2006, at 11:27 AM, Stephan Huebner wrote:

Hi Todd,

On 28.08.2006, at 18:54, Todd Ditchendorf wrote:

Are you running your widget on a Leopard developer seed or on Tiger?

No, I am not one of those fortunate ones :-)

req.open("POST", "http://www.example.com");

req.setRequestHeader("Content-Type",

"application/x-www-form-urlencoded");

req.send(postData);

If I understand right, this is the way it should be done in Tiger, right?

And I did it exactly this way. Here's a snippet of what I wrote:

xmlhttp = false;

myUrl = "http:www.something.com";

myRequest = "Param1=" + myP1 + "&Param2=" + myP2 + "&Param3=" + myP3;

xmlhttp = new XMLHttpRequest();

xmlhttp.setRequestHeader("Content-Type",

"application/x-www-form-urlencoded");

xmlhttp.setRequestHeader("Content-length", myRequest.length );

xmlhttp.open('POST', myUrl, true);

xmlhttp.>

   ...

}

xmlhttp.send(myRequest);

See docs below for more XMLHttpRequest info:

http://developer.apple.com/internet/webcontent/xmlhttpreq.html

Speaking about this doc, I have to say that it seems quite incomplete to me,

especially as a description of post-requests is missing. That should be

updated by Apple, I would say.

I've tried it again and what I got back was the document,containing this

text:

This page contains the following errors:

error on line 1 at column 1: Extra content at the end of the document

Below is a rendering of the page up to the first error.

Just to mention it, I also tried to setrequestheader with "application/xml"

with the same result.

Greetings,

Stephan

On Aug 26, 2006, at 12:37 AM, Stephan Huebner wrote:

Hi,

it's most definitely no _javascript_-error as when I try to send out the

post-request I get back a small html-document that contains just some ttags

and a text saying something about a "parsererror". I almost believe it is an

error-message generated by webkit or whatever it is that is responding to

the request. Though I don't know what could have generated this

error-message as I tried out a few post-request-examples from the internet

and did exactly what they did for generating the request.

Greetings,

Stephan

On 25.08.2006, at 20:50, Russ White wrote:

what is giving you the parse error? _javascript_? or xmlhttprequest?

On Aug 25, 2006, at 9:24 AM, Stephan Huebner wrote:

Hi all,

I'm new to this list but not to widget-programming in general. And I'm from

Germany, so my Englisch might sound a bit strange sometimes.

So, does anybody know why a post-request using XmlHttpRequest could result

in a parsererror? Normal get-requests do work fine, but post-request do not

though I think I did everything required including setting of headers for

parameters like mime-type, length of data that will be sent with the

post-request and so on. I am not sure if is a problem with the post-request

itself or maybe with the url I use (maybe the result isn't well-formed or

something so that might lead to an parsererror?

Btw, I get the same error if I disconnect the internet, so it rather seems

as if this is an error-message built into safari or webkit, but even if, I

still don't know what causes this error.

Greetings and thanks in advance,

Stephan Huebner

_______________________________________________

Do not post admin requests to the list. They will be ignored.

Dashboard-dev mailing list      (email@hidden)

Help/Unsubscribe/Update your Subscription:

http://lists.apple.com/mailman/options/dashboard-dev/email@hidden

This email sent to email@hidden

--

Love: The only and satisfying answer to the existance of human being

-- Sigmund Freud

_______________________________________________

Do not post admin requests to the list. They will be ignored.

Dashboard-dev mailing list      (email@hidden)

Help/Unsubscribe/Update your Subscription:

http://lists.apple.com/mailman/options/dashboard-dev/email@hidden

This email sent to email@hidden

--

Fanatiker tragen die Humorlosigkeit als Vereinsabzeichen - unbekannt

 _______________________________________________

Do not post admin requests to the list. They will be ignored.

Dashboard-dev mailing list      (email@hidden)

Help/Unsubscribe/Update your Subscription:

http://lists.apple.com/mailman/options/dashboard-dev/email@hidden

This email sent to email@hidden

_______________________________________________

Do not post admin requests to the list. They will be ignored.

Dashboard-dev mailing list      (email@hidden)

Help/Unsubscribe/Update your Subscription:

http://lists.apple.com/mailman/options/dashboard-dev/email@hidden

This email sent to email@hidden