var app = angular.module('myWebservice', ['ngCookies']).run(
    function($rootScope) {
        $rootScope.authToken = null; });

 app.controller('UserController', function($cookieStore, $scope, $location,
    $routeParams, $http, $timeout, $rootScope) {

        $scope.login= function() {

    $http.defaults.headers.post = {'Accept' : 'application/json',
        'Content-Type' : 'application/json'};

    $http.post('/myServise/api/user/login-user', {
                        emailId : $scope.username,
                        password : $scope.password

                    }).success(function(data, status) {
                        if (status == 200) {
            $rootScope.authToken = data.object.authToken;
                }).error(function(data, status) {
                        console.debug(data);});
        }// Else end

};// End Login


app.controller('MerchantController', function($cookieStore, $scope, $location,
    $routeParams, $http, $timeout, $rootScope) {

    $scope.getRootScopeValues = function()
    //$scope.getRootScopeValues = function($rootScope)
    {
        $scope.token = $rootScope.authToken;
        console.log($scope.token);// Undefined
        console.log($rootScope.authToken);// Undefined
    }
});

.config(function($routeProvider, $locationProvider) {
  $routeProvider
   .when('/your/route', {
    templateUrl: 'book.html',
    controller: 'BookController',
    resolve: {
      token: function() {
        //return a promise with the token here
      }
    }
  })

app.controller('MerchantController', function($cookieStore, $scope, $location,
    $routeParams, $http, $timeout, $rootScope) {

    $rootScope.tokenPromise.then( function(token){
        console.log(token); //depends on the returned data structure

    } )

});