Как например GetFeatureInfo из предпросмотра в Geoserver
Код: Выделить всё
// support GetFeatureInfo
                map.events.register('click', map, function (e) {
                    document.getElementById('nodelist').innerHTML = "Loading... please wait...";
                    var params = {
                        REQUEST: "GetFeatureInfo",
                        EXCEPTIONS: "application/vnd.ogc.se_xml",
                        BBOX: map.getExtent().toBBOX(),
                        X: e.xy.x,
                        Y: e.xy.y,
                        INFO_FORMAT: 'text/html',
                        QUERY_LAYERS: map.layers[0].params.LAYERS,
                        FEATURE_COUNT: 50,
                        Layers: 'my:belgorod-bound',
                        Styles: '',
                        Srs: 'EPSG:4326',
                        WIDTH: map.size.w,
                        HEIGHT: map.size.h,
                        format: "image/jpeg"};
                    OpenLayers.loadURL("http://localhost:8080/geoserver/wms", params, this, setHTML, setHTML);
                    OpenLayers.Event.stop(e);
                });
            }
            
// sets the HTML provided into the nodelist element
            function setHTML(response){
                document.getElementById('nodelist').innerHTML = response.responseText;