[OpenLayers-Users] getCapabilities

Wed Jun 12 10:02:39 PDT 2013

Hi,

You can access data from a remote server only by a proxy script, that
resides on your web server.

Search for "same origin policy"

http://docs.openlayers.org/library/request.html

Arnd

-----Ursprüngliche Nachricht-----
Von: Helmut Seidel M.A. [mailto:info at knowhow-la.de] 
Gesendet: Mittwoch, 12. Juni 2013 14:38
An: arnd.wippermann at web.de; openlayers-users at lists.osgeo.org
Betreff: AW: [OpenLayers-Users] getCapabilities

Hello again,

thank you for your answer. I've tried your code but keep getting the
message:

NS_ERROR_DOM_BAD_URI: Access to restricted URI denied
oRequest._object.send(oRequest._data);
XMLHttpRequest.js (Zeile 220)

I've tried several Datasources to the same result - I'f I use QGis or Python
OSWLib everything works fine?

Thanks again

Helmut

The code I've used is:

OpenLayers.ProxyHost = "proxy.cgi?url=";

	function init()
	{
    	var request = OpenLayers.Request.GET({
            	url:
"http://geodaten.bayern.de/ogc/ogc_dtk50_oa.cgi?service=WMS&request=GetCapab
ilities&version=1.1.1",
            	success: function(response){
                	var xml = request.responseXML;
                	var format = new
OpenLayers.Format.WMSCapabilities({version:"1.1.1"});
                	var GetCapabilities = format.read(xml);
                	var capability = GetCapabilities.capability;

                	var WMS_Title      = GetCapabilities.service.title;
                	var WMS_Abstract   =
GetCapabilities.service.abstract;
                	var OnlineResource =
GetCapabilities.capability.request.getmap.href;

                	var Msg = "";

                	Msg += WMS_Title + "\n\n";
                	Msg += WMS_Abstract + "\n\n";
                	Msg += OnlineResource + "\n\n";

                	for (var i=0; i < capability.layers.length; i++) {
                    	layer = capability.layers[i];
                    	Msg += layer.title + " :: " + layer.name + "\n";
                	}
                	alert(Msg);

            	}
    	});
	}
	</script>
</head>

<body  onload="init();">

-----Ursprüngliche Nachricht-----
Von: openlayers-users-bounces at lists.osgeo.org
[mailto:openlayers-users-bounces at lists.osgeo.org] Im Auftrag von Arnd
Wippermann
Gesendet: Dienstag, 11. Juni 2013 21:11
An: openlayers-users at lists.osgeo.org
Betreff: Re: [OpenLayers-Users] getCapabilities

Hi,

you have missed one level.

var GetCapabilities = format.read(xml);
var capability = GetCapabilities.capability;

and you need a proxy script to get the response from a remote server.

that should work:

OpenLayers.ProxyHost = "proxy.cgi?url=";

function init()
{
    var request = OpenLayers.Request.GET({
            url:
"http://geodaten.bayern.de/ogc/ogc_dop200_oa.cgi?service=WMS&request=GetCapa
bilities&version=1.1.1",
            success: function(response){
                var xml = request.responseXML;
                var format = new
OpenLayers.Format.WMSCapabilities({version:"1.1.1"});
                var GetCapabilities = format.read(xml);
                var capability = GetCapabilities.capability;

                var WMS_Title      = GetCapabilities.service.title;
                var WMS_Abstract   = GetCapabilities.service.abstract;
                var OnlineResource =
GetCapabilities.capability.request.getmap.href;

                var Msg = "";

                Msg += WMS_Title + "\n\n";
                Msg += WMS_Abstract + "\n\n";
                Msg += OnlineResource + "\n\n";

                for (var i=0; i < capability.layers.length; i++) {
                    layer = capability.layers[i];
                    Msg += layer.title + " :: " + layer.name + "\n";
                }
                alert(Msg);

            }
    });
}

init();

Arnd

----------------------------------------------------------------------------
----
Von: openlayers-users-bounces at lists.osgeo.org
[mailto:openlayers-users-bounces at lists.osgeo.org] Im Auftrag von Helmut
Seidel M.A.
Gesendet: Dienstag, 11. Juni 2013 17:25
An: 'Bart van den Eijnden'
Cc: openlayers-users at lists.osgeo.org
Betreff: Re: [OpenLayers-Users] getCapabilities

Hello again,

I've changed the code to someting like:

function init(){

var request = OpenLayers.Request.GET({

                url:
"http://geodaten.bayern.de/ogc/ogc_dop200_oa.cgi?service=WMS&request=GetCapa
bilities&version=1.1.1",

                 success: function(response){

                                var format = new
OpenLayers.Format.WMSCapabilities();

                                var xml = request.responseXML;

                               var capabilities = format.read(xml);

                               for (var i=0; i < capabilities.layers.length;
i++) {

                                               layer =
capabilities.layers[i];

alert(layer.name);

                               }

                }

                });

}

But that does not really improve things, so I guess that's not what you've
meant- sorry I'm really new to OpenLayers.

Thanks again

Helmut

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