angularjs $ resource delete导致错误

Question

我尝试使用angular delete资源，这会在Chrome控制台中产生SyntaxError。但是，会创建正确的服务器请求，并且会在服务器上删除资源。

脚本：

var libmsModule = angular.module('libmsModule', ['ngResource']);

libmsModule.factory('Book', function($resource) {
    return $resource('/libms/books/:id', {id: '@id'}, {
        update: {
            method: 'PUT'
        }
    });
});

libmsModule.controller('BookCtrl', function($scope, Book) {

$scope.deleteBook = function(index) {
    var bk = $scope.books[index];
    $scope.book = new Book();
    $scope.book.id = bk.id;
    $scope.book.$delete(function() {
        //console.log("deleting... " + index);
        //$scope.books.splice(index, 1);
    });
}

$scope.books = Book.query(function(data) {      
});

});

HTML：

<div id="home-container" class="home" data-ng-app="libmsModule">

<div data-ng-controller="BookCtrl">
<a href="#" data-ng-click="addBook()">Add Book</a>
   <ul>
        <li data-ng-repeat="book in books" data-ng-click="deleteBook($index)">{{book.id}} {{book.author}} {{book.title}} {{book.cost}}</li>
    </ul>
</div>
</div>

这导致：

Request URL:http://localhost:8780/libms/books/44
Request Method:DELETE

服务器（Spring MVC）：

@RequestMapping(value = { "/books/{id}" }, method = RequestMethod.DELETE)
public ResponseEntity<String> deleteBook(@PathVariable("id") Integer id,
        Model model) throws Exception {
    logger.entry();
    bookSvc.deleteBook(new Book(id));
    logger.exit();
    return new ResponseEntity("Book deleted", HttpStatus.OK);
}

相应地删除了本书，但控制台中显示以下内容：

响应标签（chrome控制台）显示：Book deleted。 我是否需要将delete的内容添加到Book Factory？