spring - 无法从 portlet 调用 spring bean

Question

我有如下的Spring bean：

    @Service("bookService")
public class BookServiceImpl implements BookService {
    @Autowired
    @Qualifier("bookDao")
    private BookDao bookDao;

我有一个 portlet 尝试访问它，如下所示：

   62   public BookService getBookService() {
63      ApplicationContext springCtx =   PortletApplicationContextUtils.getWebApplicationContext(getPortletContext());
64      return (BookService)springCtx.getBean("bookService");
    }


but i have the below nullpointer exception:
java.lang.NullPointerException
at chapter09.code.listing.base.BookCatalogPortlet.getBookService(BookCatalogPortlet.java:64)
at chapter09.code.listing.base.BookCatalogPortlet.init(BookCatalogPortlet.java:59)

如果我遗漏了一些可用的资源@http://portletsinaction.googlecode.com/svn/trunk/ch9_BookCatalogSpringJdbc/，请告诉我

enter code here

Answer 1

Liferay 6.1.1 的问题我已经用 6.0.6 进行了相同的测试，并且工作正常。