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Accordingly specification manipulation with WFS services can be perform using POST or GET (for example, requests. Is it possible to configure OpenLayers for using only GET requests (by default POST is used). Now my code looks like:

wfs = new OpenLayers.Layer.Vector('Example of WFS layer', {
    strategies: [new OpenLayers.Strategy.BBOX()],
    visibility: true,
    protocol: new OpenLayers.Protocol.WFS(wfs_property)
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I noticed they changed the default request method after version 2.8 – OkieOth Dec 4 '12 at 8:51
up vote 6 down vote accepted

I've solved my problem. For using GET request should use OpenLayers.Protocol.HTTP instead OpenLayers.Protocol.WFS.

wfs_options = {
    url: 'http://fakeurl/tinyows.cgi?',
    params: {
        request: "GetFeature",
        service: "wfs",
        version: "1.0.0",
        typeName: "layername"
    format: new OpenLayers.Format.GML({
        featureNS: "",
        geometryName: "wkb_geometry"

wfs = new OpenLayers.Layer.Vector('WFS', {
    strategies: [new OpenLayers.Strategy.Fixed()],
    visibility: true,
    protocol: new OpenLayers.Protocol.HTTP(wfs_options),
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Looks good :-) ... Does your solution also set the parameter for the BBOX values? – OkieOth Dec 5 '12 at 7:48
bbox parameter automatically adds to URL when using BBOX strategy. – drnextgis Dec 5 '12 at 9:24

A look at the source code seems to show the POST is hard coded in in WFS protocol.

/* part from source with own comments v2.11: lib/OpenLayers/Protocol/WFS/v1.js */
read: function(options) {, arguments);
    options = OpenLayers.Util.extend({}, options);
    OpenLayers.Util.applyDefaults(options, this.options || {});
    var response = new OpenLayers.Protocol.Response({requestType: "read"});

    /* this here seems to be changed - imo it constructs the post xml data */
    var data = OpenLayers.Format.XML.prototype.write.apply(
        this.format, [this.format.writeNode("wfs:GetFeature", options)]

    /* hard coded? */
    response.priv = OpenLayers.Request.POST({
        url: options.url,
        callback: this.createCallback(this.handleRead, response, options),
        params: options.params,
        headers: options.headers,
        data: data

    return response;

So my idea try to override the read function with your own WFS protocol implementation. The samples 'lib/OpenLayers/Protocol/WFS/v1_*_0.js' can be a good starting point. You should call it with something like that. wfs = new OpenLayers.Layer.Vector('Example of WFS layer', { strategies: [new OpenLayers.Strategy.BBOX()], visibility: true, protocol: new OpenLayers.Protocol.WFS.v1_withGet(wfs_property) });

But it seems to be the hard way :-D

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