Send extraParams from Store

[eetayo]

I need to send a variable (plataformatechnosite.Utils.usuario) as extraParams and not working. Send an empty string to the server

I use that variable in many other places and it works.

My Code:

Ext.define('plataformatechnosite.store.Feeds', {
    extend: 'Ext.data.Store',
    config: {
        model: 'plataformatechnosite.model.Feed',
        storeId: 'feedsStore',
        proxy: {
            type: 'jsonp',
            url:'http://localhost:8080/proxySimplext/webresources/listadoMedios/recuperar',
            callbackKey: 'callback',
            extraParams:{
                usuario: plataformatechnosite.Utils.usuario
            },
            reader: {
                type: 'json',
                rootProperty: 'listaMedios'
            },
            callback: function(data) { 
                console.log("callback" + data);
            },
            afterRequest: function(req, res) {
                console.log("Ahoy!", req.operation.response);    
            }
        },
        timeout: 3000
    }
});

ideas??

[Isnogud]

Sending an empty string or is usuario undefined?

[eetayo]

empty string.

In my java web service:

  public JSONWithPadding recuperarListaMedios( @QueryParam("usuario") String usuario, @QueryParam("callback") String callback) {


        System.out.println(" value:" + usuario);

result empty string--> value: