Why don't set Geometry column in OpenLayers wfs-t request to geoserver?

I want to edit a vector layer(its a point layer) using OpenLayers 3.6 and then save it with wfs protocol. I'm using Goserver 2.8 in server side. I define my layer as follow:

var u="http://localhost:8080/geoserver/wfs?&service=wfs&version=1.1.0&request=GetFeature&typeNames=opengeo:Point";
format = new ol.format.WFS({});
wfs = new ol.layer.Vector({
    title: 'Point',

    source: new ol.source.Vector({
        url: 'proxy.cgi?url=' + encodeURIComponent(u),
        format: format
    })
});

I get all features correctly. Now I add a point to layer as follow:

point = new ol.geom.Point([39.8274942, 21.4226638]);
feature = new ol.Feature({
    geometry: point

});
feature.set('NAME', 'Ya Ali Madad');
source.addFeature(feature);

Now saving feature is as bellow:

node = format.writeTransaction([feature],null,null,{
    featureNS: 'http://opengeo.org',
      featureType: 'opengeo:Point',
      srsName: 'EPSG:4326'
});


s = new XMLSerializer();

var url = "http://localhost:8080/geoserver/wfs";

Ext.Ajax.request({
    url: 'proxy.cgi?url='+ encodeURIComponent(url),
    method: 'POST',
    xmlData: s.serializeToString(node),
    headers: {

        'Content-Type': 'text/xml'
    },
    success: function(response){
        console.log("All thing is right.");
    }
});

I use Extjs-6 for creating ajax request. it create a request as follow:

Request Payload:

    xmlns="http://www.opengis.net/wfs" 
    service="WFS" version="1.1.0" 
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" 
    xsi:schemaLocation="
        http://www.opengis.net/wfs 
        http://schemas.opengis.net/wfs/1.1.0/wfs.xsd">
    
        
            
                

                    39.8274942 21.4226638
                
            
            Ya Ali Madad
        
    

Request in Network:

And geoserver response this request as follow.

GeoServer response:

    xmlns:xs="http://www.w3.org/2001/XMLSchema" 
    xmlns:ogc="http://www.opengis.net/ogc" 
    xmlns:wfs="http://www.opengis.net/wfs" 
    xmlns:ows="http://www.opengis.net/ows" 
    xmlns:xlink="http://www.w3.org/1999/xlink" 
    xmlns:gml="http://www.opengis.net/gml" 
    xmlns:opengeo="http://opengeo.org" 

    xmlns:usa="http://census.gov" 
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" 
    version="1.1.0" 
    xsi:schemaLocation="
        http://www.opengis.net/wfs 
        http://localhost:8080/geoserver/schemas/wfs/1.1.0/wfs.xsd">

    
        1
        0

        0
    
    

    
        
            
        
    

Geoserver add this point in database, but don't set geometry field. it only set properties column and Not geometry column.

Where is the problem? How can I do to fix it?

Answer

Your Insert request contains an feature that doesn't match your Schema which is expecting the Point attribute to be called the_geom. You don't get an error because you have marked that feature as Nillable (or optional).

If you change your request to the following it should work - the best way to test this is using the demo requests page in GeoServer.

xmlns="http://www.opengis.net/wfs" 
service="WFS" version="1.1.0" 
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" 

xsi:schemaLocation="
    http://www.opengis.net/wfs 
    http://schemas.opengis.net/wfs/1.1.0/wfs.xsd">

    
        
            
                39.8274942 21.4226638
            
        

        Ya Ali Madad
    

Now you must define the feature as follow:

feature = new ol.Feature({
    the_geom: point
});

And then set geometryName features config:

feature.setGeometryName('the_geom');