openlayers 2 - Display a WFS layer with OpenLayers2

I have some troubles displaying a WFS layer with OpenLayers and hope someone here can give me a hint. Before moving on, I precise that I have already checked other posts, like here and here but, for any reason, it hasn't solved my problem yet (and by the way, thank you to the contributors to those posts, they made me understand a little bit better already)... The WFS layer appears in the layer switcher, but not at all on the map.

So, here is the configuration of my data:

and here is my OpenLayers code:

var adresspt_wfs = new OpenLayers.Layer.Vector("Adress points WFS", {
  strategies: [new OpenLayers.Strategy.BBOX()],
    protocol: new OpenLayers.Protocol.WFS({

    url: "http://localhost:8080/geoserver/wfs",
    featurePrefix:"luma_project",
    featureType: "adresspt",
    featureNS: "http://localhost:8080/luma",
    srsName: "EPSG:4326",
    geometryName: "the_geom",
    version: "1.0.0"
  })
});
map.addLayer(adresspt_wfs);

Do you see anything missing here? As my data is stored in a (local) PostGIS database, should I refer to it as workspace:store:layer? or workspace:layer?

Also, I precise that I have no trouble to display this layer as WMS in OpenLayers and that I can even display it as WFS in Quantum GIS. The problem thus doesn't come from the data or the Geoserver, but really from my OpenLayers code.

Any help will be greatly appreciated!

EDIT:

Here is the full code:

var map;

function init() {
var bounds = new OpenLayers.Bounds(

    13, 55.67, 13.5, 55.8
  );

 var options = {
    projection: new OpenLayers.Projection("EPSG:4326"),
    displayProjection: new OpenLayers.Projection("EPSG:4326"),
    maxExtent: bounds,
    units: 'degrees'
  };


  map = new OpenLayers.Map('map');

  var transportation = new OpenLayers.Layer.WMS(
    "Lund transportation network", "http://localhost:8080/geoserver/wms",
    { layers: 'lu_transportation',
      format: 'image/png',
      srs:'EPSG:4326',
      transparent:'true',
      zoomOffset: 11, 
   },

   {isBaseLayer: true, opacity: 0.4});

  var adresspt_wfs = new OpenLayers.Layer.Vector("Adress points WFS", {
    strategies: [new OpenLayers.Strategy.BBOX()],
    protocol: new OpenLayers.Protocol.WFS({
      url: "http://localhost:8080/geoserver/wfs",
      //featurePrefix:"luma_project",
      featureType: "luma_project:adresspt",
      featureNS: "http://localhost:8080/luma",
      srsName: "EPSG:4326",

      geometryName: "the_geom",
      version: "1.0.0"
    })
  });

    map.addLayer(transportation);
    map.addLayer(adresspt_wfs);

  map.addControl(new OpenLayers.Control.Navigation());
  map.addControl(new OpenLayers.Control.LayerSwitcher());

  map.addControl(new OpenLayers.Control.Scale($('scale')));
  map.addControl(new OpenLayers.Control.MousePosition({element: $('location')}));

  map.zoomToExtent(bounds);

}

And then the HTML code:

  
  


    Coordinates of the mouse: 
...
    
    

  

  


  

EDIT (2)

Just to try out, I have added another WFS layer, from a remote server, and still nothing displays... I took the exact code of this page, which is:

var test_wfs = new OpenLayers.Layer.Vector("WFS", {
  strategies: [new OpenLayers.Strategy.BBOX()],
  protocol: new OpenLayers.Protocol.WFS({
    url: "http://demo.opengeo.org/geoserver/wfs",
    featureType: "tasmania_roads",
    featureNS: "http://www.openplans.org/topp"
  })
});

I really don't understand... this layer displays perfectly on this page, but not on mine... with the same code...

Answer

Thanks to iant I have solved my problem! What I didn't know (and could also be useful for other Geoserver newbies like me) is that the html files must be in the Geoserver web directory (for the default installation on windows:

C:/Program Files/GeoServerx.x.x/data_dir/www/something) 

and must be accessed by the url. If on localhost:

http://localhost:8080/geoserver/web/something 

For any reason, "double-clicking" on the html file to display it in your browser will work for WMS feeds but not for WFS (there must be a rationale explanation, but I don't know it).

I still need to find out how to display the WFS on top of OpenStreetMap and Google tiles, as there is apparently a new problem with the projection. I already solved it for the WMS layers, but the WFS doesn't appear yet when the projection is EPSG:900913. I'll investigate.

Thanks to all of you for your help and contribution!

EDIT:

Actually, for my 2nd problem, the solution is very easy: in the parameters of the WFS layer, it is necessary to define the srs of the map, not the one of the layer itself. So, instead of:

   var adresspt_wfs = new OpenLayers.Layer.Vector("Adress points WFS", {
    strategies: [new OpenLayers.Strategy.BBOX()],
    protocol: new OpenLayers.Protocol.WFS({
      url: "http://localhost:8080/geoserver/wfs",
      featurePrefix:"luma_project",
      featureType: "adresspt",
      featureNS: "http://localhost:8080/luma_project",

      srsName: "EPSG:4326",
      geometryName: "the_geom",
      version: "1.1.0"
    })
  });

you should write:

   var adresspt_wfs = new OpenLayers.Layer.Vector("Adress points WFS", {
    strategies: [new OpenLayers.Strategy.BBOX()],
    protocol: new OpenLayers.Protocol.WFS({

      url: 'http://localhost:8080/geoserver/wfs',
      featurePrefix:"luma_project",
      featureType: "adresspt",
      featureNS: "http://localhost:8080/luma_project",
      srsName: "EPSG:900913",
      geometryName: "the_geom",
      version: "1.1.0"
    })
  });