Consume response from Odata using sapui5

Hi everyone, can someone help me to consume response given after authenticating gateway using sapui5

var oModel = new sap.ui.model.odata.ODataModel("http://server:8000/sap/opu/odata/MOBPOPR/POPRAPP_SRV/ValidateApproverCollection/?$filter=Approverid eq 'supervisor' and Password eq 'welcome1'&$format=json", true, "mobtest", "welcome1")

here i have the url and how can I get http response from the server.And so that I can store the data into a string for parsing. The response will be like this..