var cs = angular.module('csw', []);
cs.controller('login', ['$scope', function($rootScope, $scope, $http) {
    $scope.showLogin=true;
    $http.post('http://localhost:8080/csw/rest/cs/admin/login?userName=' + $scope.UserName + '&password=' + $scope.Password)
}]);

<div ng-app="csw">
    <!-- login -->
    <div ng-controller="login" ng-show="showLogin" style="border: 2px solid black">
        <p>
            UserName: <input type="text" ng-model="UserName" value="admin">
            Password: <input type="text" ng-model="Password" value="1234">
        </p>
        <hr/>
    </div>
</div>

cs.controller('login',['$scope', function($rootScope, $scope, $http) {

cs.controller('login',['$rootScope', '$scope', '$http', function($rootScope, $scope, $http) {

cs.controller('login', function($rootScope, $scope, $http) {