CQ5书店应用程序错误

Question

1. 我从crx.html#Step%20Two:%20Check%20out%20CRX%20Bookstore%20Example签出了源代码
2. 当我试图调用http://:4502/products.html时
3. 实际结果应该列出书店应用程序的产品页面。
4. 我得到了“无法在/apps/bookstore/components/ranking/ranking.jsp:中向/products.html提供请求，您使用的是什么版本的产品?在什么操作系统上?我在windows 7 http://code.google.com/p/crxzon/issues/detail?id=4&thanks=4&ts=1362987616上使用CQ5.5 (CRX2.3)。

Answer 1

据我所见，您可以在NullPointerException中获得RankingServiceImpl:277，因为repository字段为null。我唯一能解释的方法是SCR注释在构建过程中没有触发。

说到这一点，我很惊讶您的包是从CQ5.5开始的，因为依赖项似乎是早期版本(我猜是5.4) --我建议在/system/console/bundles (搜索CRX示例书店演示)下对此进行反复检查。如果缺少导入，请尝试使用/src/impl/com.day.crx.sample.bookshop.bnd更新版本，如CQ5.5，或在CQ5.4上运行。

Answer 2

RankingServiceImpl中的注释似乎适用于早期版本的CQ和CRX。以下是我为使其发挥作用所做的修改：

import org.apache.felix.scr.annotations.Property;
import org.apache.felix.scr.annotations.Reference;


/**
 * Default implementation of the ranking service.
 * The ranking is updated through observation (based on OSGi events).
 * The service can be used by clients to get the highest ranked products.
 */
@Component(immediate = true)
@Service(value = RankingService.class)
@Property(name = org.osgi.service.event.EventConstants.EVENT_TOPIC, value = SlingConstants.TOPIC_RESOURCE_ADDED)
public class RankingServiceImpl
    implements RankingService, EventHandler, Runnable {

    private Logger logger = LoggerFactory.getLogger(this.getClass());
    // private Logger logger = LoggerFactory.getLogger("RankingServiceImpl");


    private static final String PROPERTY_PREV_RANKING = "lowerRankingRef";
    private static final String PROPERTY_NEXT_RANKING = "higherRankingRef";

    private static final int SHOW_HIGHEST_RANKING = 3;

    /** Flag for stopping the background service. */
    private volatile boolean running = false;

    /** A local queue for handling new orders. */
    protected final BlockingQueue<String> orders = new LinkedBlockingQueue<String>();

    @Reference
    private SlingRepository repository;

    @Reference
    private ResourceResolverFactory resourceResolverFactory;