此鏈接可能是有用的:Openlayers Proxy path usage
一些認爲的OpenLayers執行的任務(包括WFS請求)要求,因爲在使用XMLHttpRequest發出請求到遠程服務器的JavaScript中限制使用代理腳本。 在設置地圖之前添加特定聲明。
從這裏開始: http://openlayers.org/dev/examples/2
的代碼示例:
/*
* Fix for OpenLayers using 900913 for web mercator and AGS using 102113 (it must run before map init)
OpenLayers.Layer.WMS.prototype.getFullRequestString = function(newParams,altUrl) {
try {
var projectionCode=typeof this.options.projection == 'undefined' ? this.map.getProjection() : this.options.projection;
} catch(err){
var projectionCode=this.map.getProjection();
}
this.params.SRS = projectionCode=="none" ? null : projectionCode;
return OpenLayers.Layer.Grid.prototype.getFullRequestString.apply(this,arguments);
}
*/
OpenLayers.ProxyHost = proxyPath;
var options = {
projection: mercator, //EPSG:3785/900913
displayProjection: geographic, //EPSG:4326
theme: null,
maxExtent: new OpenLayers.Bounds(-20037508.34, -20037508.34, 20037508.34, 20037508.34),
maxResolution: 156543.0339,
units: 'm',
controls: [],
numZoomLevels: MAX_ZOOM_LEVEL,
allOverlays: true
};
OpenLayers.Util.DEFAULT_PRECISION = 18;
mp = new OpenLayers.Map('map', options);
addMaps();
addControls();
mp.addLayers([googlePhysical, googleSatellite, googleStreets, googleHybrid]);
//Enabling the preferred layers with a delay of 450 to be able to load the external backgrounds
setTimeout(setInitialLayersDiv, 450);
if (!mp.getCenter()) {
if (document.getElementById('userMapExtent').value != '') {
var sExtent = document.getElementById('userMapExtent').value.split(',');
mp.zoomToExtent(new OpenLayers.Bounds(sExtent[0], sExtent[1], sExtent[2], sExtent[3]), true);
} else {
mp.zoomToExtent(europeGoogleExtent);
}
}
J('#google_loading').hide('slow');
感謝,這對我來說是非常有幫助 – sacprasanna 2012-05-25 18:33:48