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Question

我正在使用 EJB3.1 和 Glassfish 3.1 在 NetBeans 7 中进行开发。
我正在尝试从 WAR 中的 POJO 中引用 JAR 中 session Bean 的本地接口(interface)。
当我部署到 Glassfish 时，我收到:

SEVERE: Unresolved <ejb-link>: TaskTool-ejb#ContextFacade
SEVERE: Exception while deploying the app [com.oracle.eas_TaskTool-ear_ear_1.0-SNAPSHOT]
SEVERE: Error: Unresolved <ejb-link>: TaskTool-ejb#ContextFacade

我使用 NetBeans 帮助器生成引用 session Bean 的本地接口(interface)的代码，它生成了 <ejb-local-ref> web.xml 中的部分对我来说。

@Local
public interface ContextFacadeLocal {
    void create(Context context);
    void edit(Context context);
    void remove(Context context);
    Context find(Object id);
    List<Context> findAll();
    List<Context> findRange(int[] range);
    int count();
    List<Context> findRootContexts();
}

@Stateless
public class ContextFacade extends AbstractFacade<Context> implements ContextFacadeLocal {
    @PersistenceContext(unitName = "TaskToolPU")
    private EntityManager em;

    protected EntityManager getEntityManager() {
        return em;
    }

    public ContextFacade() {
        super(Context.class);
    }

    @Override
    public List<Context> findRootContexts() {
        CriteriaBuilder builder = em.getCriteriaBuilder();
        CriteriaQuery<Context> query = builder.createQuery(Context.class);
        Root<Context> c = query.from(Context.class);
        query.select(c).where(builder.isNull(c.get("parent")));
        query.orderBy(builder.asc(c.get("id")));

        TypedQuery<Context> q = em.createQuery(query);
        return q.getResultList();
    }
}

@FacesConverter(value = "contextConverter")
public class contextConverter implements Converter {

    ContextFacadeLocal contextFacade = lookupContextFacadeLocal();

    @Override
    public Object getAsObject(FacesContext fc, UIComponent uic, String string) {
        return contextFacade.find(string);
    }

    @Override
    public String getAsString(FacesContext fc, UIComponent uic, Object o) {ntityManager() {
        return em;
    }

    public ContextFacade() {
        super(Context.class);
    }

    @Override
    public List<Context> findRootContexts() {
        CriteriaBuilder builder = em.getCriteriaBuilder();
        CriteriaQuery<Context> query = builder.createQuery(Context.class);
        Root<Context> c = query.from(Context.class);
        query.select(c).where(builder.isNull(c.get("parent")));
        query.orderBy(builder.asc(c.get("id")));

        TypedQuery<Context> q = em.createQuery(query);
        return q.getResultList();
    }
}

@FacesConverter(value = "contextConverter")
public class contextConverter implements Converter {

    ContextFacadeLocal contextFacade = lookupContextFacadeLocal();

    @Override
    public Object getAsObject(FacesContext fc, UIComponent uic, String string) {
        return contextFacade.find(string);
    }

    @Override
    public String getAsString(FacesContext fc, UIComponent uic, Object o) {
        return ((Context) o).getId().toString();
    }

    private ContextFacadeLocal lookupContextFacadeLocal() {
        try {
            javax.naming.Context c = new InitialContext();
            //return (ContextFacadeLocal) c.lookup("java:global/com.oracle.eas_TaskTool-ear_ear_1.0-SNAPSHOT/com.oracle.eas_TaskTool-ejb_ejb_1.0-SNAPSHOT/ContextFacade!com.oracle.eas.ejbs.ContextFacadeLocal");
            return (ContextFacadeLocal) c.lookup("java:comp/env/TaskTool-ejb#ContextFacade");

        } catch (NamingException ne) {
            Logger.getLogger(getClass().getName()).log(Level.SEVERE, "exception caught", ne);
            throw new RuntimeException(ne);
        }
    }
}


<?xml version="1.0" encoding="UTF-8"?>
<web-app version="3.0" xmlns="http://java.sun.com/xml/ns/javaee" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_3_0.xsd">
    <context-param>
        <param-name>javax.faces.PROJECT_STAGE</param-name>
        <param-value>Development</param-value>
    </context-param>
    <servlet>
        <servlet-name>Faces Servlet</servlet-name>
        <servlet-class>javax.faces.webapp.FacesServlet</servlet-class>
        <load-on-startup>1</load-on-startup>
    </servlet>
    <servlet-mapping>
        <servlet-name>Faces Servlet</servlet-name>
        <url-pattern>/faces/*</url-pattern>
    </servlet-mapping>
    <session-config>
        <session-timeout>
            30
        </session-timeout>
    </session-config>
    <welcome-file-list>
        <welcome-file>faces/index.xhtml</welcome-file>
    </welcome-file-list>
    <ejb-local-ref>
        <ejb-ref-name>ContextFacade</ejb-ref-name>
        <ejb-ref-type>Session</ejb-ref-type>
        <local>com.oracle.eas.ejbs.ContextFacadeLocal</local>
        <ejb-link>TaskTool-ejb#ContextFacade</ejb-link>
    </ejb-local-ref>
</web-app>

更新

为了清楚起见:

我根本没有 ejb-jar.xml。

使用 <ejb-link>TaskTool-ejb/ContextFacade</ejb-link>或 <ejb-link>com.oracle.eas_TaskTool-ejb_ejb_1.0-SNAPSHOT/ContextFacade</ejb-link>作品。

请参阅下面的 bkail 答案以获取解释。非常感谢!

Answer 1

我在尝试部署我的应用程序时遇到了同样的问题，NetBeans 自己在我的 web.xml 中生成了这段代码。

检查你的 web.xml，看看你是否看到这个:

<ejb-local-ref>
        <ejb-ref-name>appName</ejb-ref-name>
        <ejb-ref-type>Session</ejb-ref-type>
        <ejb-link>AppName#SomeClass</ejb-link>
    </ejb-local-ref>

如果是这样，只需将其完全删除，它应该在之后部署。