Image retrieval using Angular-Datatables & Spring MVC

Parthe

I am new to angular data tables and in my project, I am using Spring MVC and angular data tables to retrieve an image stored as byte array in my postgresql table. I use the java entity in angularjs to connect to database. When I retrieve the byte array stored, it gives me null values.

function EmpController(Employee, $scope, $http, $compile, $filter, $modal, $timeout, DTOptionsBuilder, DTColumnBuilder, DTInstances) {

    var vm = this;

 vm.dtOptions = createDefaultDtOptions('users/list', null, 'loginName', null,
            $scope, $http, $compile, DTOptionsBuilder,null,true);

vm.dtColumns = [ DTColumnBuilder.newColumn('id').withTitle('ID'), DTColumnBuilder.newColumn('person').withTitle('Person Name') .renderWith(function (data) { alert("Data: " + data); return data ? data.person : ''; }), DTColumnBuilder.newColumn('loginName').withTitle('User Name'), DTColumnBuilder.newColumn('rowCreated').withTitle('Created Date') .renderWith(function (data) { return $filter('date')(data, appConfig.timestampFormat); }), DTColumnBuilder.newColumn('enabled').withTitle('Enabled'), DTColumnBuilder.newColumn('passwordExpired').withTitle('Password Expired'), createDefaultActionsDtColumn(DTColumnBuilder, null, null, true) ]; }

The alert gives me Data: null everytime I retrieve a record