cdi

问题 Is this a correct approach to inject @ApplicationScoped bean in @SessionScoped bean? will this lead my application scoped bean to be stored in the session of every user? I have an application scoped bean that contains some values we share among all the system users, and now I need to get that values within a method in a session bean. 回答1: Injecting a bean of the same or a broader scope in another bean is completely legal and correct either in JSF or CDI beans, like the example you provided.

问题 Is this a correct approach to inject @ApplicationScoped bean in @SessionScoped bean? will this lead my application scoped bean to be stored in the session of every user? I have an application scoped bean that contains some values we share among all the system users, and now I need to get that values within a method in a session bean. 回答1: Injecting a bean of the same or a broader scope in another bean is completely legal and correct either in JSF or CDI beans, like the example you provided.

问题 I am trying to follow this post's upvoted answer: Best practice for REST token-based authentication with JAX-RS and Jersey I'm using the CDI approach and in my filter i have the definition: @Inject @AuthenticatedUser Event<String> userAuthenticatedEvent; But, when I run tomcat 7, I get the following error: org.glassfish.hk2.api.UnsatisfiedDependencyException: There was no object available for injection at SystemInjecteeImpl(requiredType=Event<String>,parent=AuthenticationFilter,qualifiers={

问题 Im trying JSF2 CDI (weld) beans in eclipse helios instead of ManagedBeans , but can't do the auto completion inside the expression language for my Named beans (the #{myNamedBean. Ctrl + Space } thingy) But OTOH with ManagedBeans, the content assist works well .. Is the content assist for CDI beans supported yet in Eclipse Helios? Anybody got experiences in this ? 回答1: Install JBoss tools. Then by adding <nature>org.jboss.tools.jsf.jsfnature</nature> to the natures section of the .project file

问题 I'm doing some unit tests using Arquillian on JUnit4 and Jboss6. There is a facade(SomeFacadeclass) that has the "SomeClass"(which is an interface) injected to it. When Arquillian deploys the test.war for testing the above deployment error pops up. What should i do to solve this? 回答1: I would guess that you don't have an implementation of SomeClass in your bean archives 回答2: Everything was solved. I added the implementation class to the @Deployment archive and some other bunch of dependent

问题 I just started a quarkus proof of concept. The containers-start time is amazing! Right now, I'm working on the Dependency Injection part. And figuring out the options. https://quarkus.io/blog/quarkus-dependency-injection/ My preferences are: I prefer constructor injection. (This has been going ok). I prefer "java config" so I can follow the "Composition Root" pattern of putting all my application dependency injections in a common place. (See https://blog.ploeh.dk/2011/07/28/CompositionRoot/ )

问题 I'd like to kind of pass-through a qualifier annotation using CDI. With that I mean that I'd want to add a qualifier to an injection point with that qualifier not being applied directly for the "first-level" injection target (because there is only one implementation for this) but a field within ("2nd level") the injected EJB. Is this possible with CDI? Does it maybe already work out-of-the-box? It should look similar to: @Stateless public class MyFirstLevelEJB { @Inject //this guy has

问题 I have a no-client application that I wish to run. It will have no clients but it will make HTTP calls and act as client for other services. It would run for perhaps a few hours or days (but it will not require periodic runs -- just one-shot). I want to run it in a Java EE 7 container, because of the benefits of standard Context Dependency Injection (CD), and a standard JAX-RS client (new since Java EE 7). It is also nice to have services such as JMS, JPA. The question is how do I write /

问题 I work with JSF 2 (MyFaces 2.1.7 and Primefaces 3.4.2), CDI (Weld-servlet 1.1.10), JPA 2 (Hibernate 4.1.7) and Lombok 0.11.2. All this runs on Tomcat 6 and 7. I use the OpenSessionInView pattern, implemented through a Filter . @Advanced @Data @Slf4j public class TransactionalFilter implements Filter, Serializable { private static final long serialVersionUID = 999173590695648899L; @Inject private EntityManager em; @Override public void doFilter(ServletRequest request, ServletResponse response,

问题 I have a CDI bean where I'm using @ConversationScoped. When I try to do an @Inject for the Conversation object, I get a NPE. @ConversationScoped @Named("customerbean") public class CustomerBean implements Serializable { @Inject private Conversation conversation; private static final EntityManagerFactory emf = Persistence.createEntityManagerFactory("ba"); private EntityManager em; private Customer customer; boolean disabled; public CustomerBean() { beginConversation(); customer = new Customer(