java-ee-6

问题 How is the session defined in @SessionScoped CDI bean? Is this annotation valid only when called from Servlet container, where the session is well defined in form of HttpSession ? If not, than how an EJB with @Inject @SessionScoped MyBean myBean can know what the session really is ? I mean, methods of this EJB could have been invoked by a standalone client, RESTful WS or by some other view. What should happen in such case? Should the annotation have no meaning, should it inject fresh MyBean

问题 I work on a Java EE project which is planned to become quite large in future and I want to share as much code as possible. This included not only Java code, but also code for UI elements. I think about developing enterprise components based on clear defined subjects (like user administration, taxes, products) which interact on basis of messages, beans and so on. I also think about giving all these components some managed beans and JSF composites to provide some basic functionality for later

问题 I recently gone through a Netbeans article about how to create and Enterprise Application Client that access EJB deploy on Glassfish.(Article Link Here) I have couples questions about this article. The article exposes the EJB via a remote interface, I think this will result in application client have to make a remote invocation. There are overheads for doing this. While local interface parameters are passed by reference, remote interface parameters are passed by value, which results in

问题 I have a JSF page with a few fields. I followed this tutorial from BalusC and all is good. I then added RichFaces support to it, which is working fine. I can see popups etc working. Now what I am trying to do is that once a person has been registered, I want to show the name in the popup (this is also fine I can see that in the popup). Then I want to be able to change that name inside the popup and have that reflected in the parent, but I have no clue how to do that. Please have a look. XHTML

问题 I am trying to deploy a JSF 2.1 webapplication to a Weblogic 12.1 application server, but the deployment fails with the following exception <javax.enterprise.resource.webcontainer.jsf.config> <BEA-000000> <Critical error during deployment: com.sun.faces.config.ConfigurationException: CONFIGURATION FAILED! com.oracle.injection.integration.jsf.WeblogicFacesConfigResourceProvider cannot be cast to com.sun.faces.spi.ConfigurationResourceProvider at com.sun.faces.config.ConfigManager.initialize

问题 [ UPDATE : After discussion on the Glassfish forums/ML at http://forums.java.net/jive/thread.jspa?messageID=480532 a bug was filed against Glassfish https://glassfish.dev.java.net/issues/show_bug.cgi?id=13040 for this issue.] I'm trying to inject a local no-interface view of a @Stateless EJB into a JSF2 @Named @javax.enterprise.context.SessionScoped backing bean. The EJB is one of several that extend an abstract generic base class. Injection of "@Inject TheEJBClass varName" fails with "Unable

问题 UPDATE : See my blog post on this topic about a year after this was written: http://blog.ringerc.id.au/2012/07/java-ee-7-needs-improvements-in-app.html ... for references to the Java EE 7 planning discussion on this topic. I've mostly finished writing a small Java EE 6 application, and am in the process of replacing the hard-coded preferences with a proper dynamic configuration interface. I'm not sure how - or, more specifically, where - to store settings. There must be some obvious,

问题 UPDATE : See my blog post on this topic about a year after this was written: http://blog.ringerc.id.au/2012/07/java-ee-7-needs-improvements-in-app.html ... for references to the Java EE 7 planning discussion on this topic. I've mostly finished writing a small Java EE 6 application, and am in the process of replacing the hard-coded preferences with a proper dynamic configuration interface. I'm not sure how - or, more specifically, where - to store settings. There must be some obvious,

问题 I'm trying to force JPA/Hibernate to generate and use only lowercase tablenames. I've implemented a NamingStrategy like this: public class MyNamingStrategy extends DefaultNamingStrategy { @Override public String classToTableName(String className) { return super.classToTableName(className).toLowerCase(); } } I have applied it by setting this property in persistence.xml: <property name="hibernate.ejb.naming_strategy" value="entities.strategy.MyNamingStrategy"/> When I do this I get this

问题 I am trying to inject a service into my bean but it is always null . I get the following error: WELD-001000 Error resolving property userBean against base null. Some code snippets: index.xhtml <h:body> Hello from Facelets #{userBean.name} </h:body> userbean.java package beans; import Domain.User; import java.io.Serializable; import javax.enterprise.context.SessionScoped; import javax.inject.Inject; import javax.inject.Named; import service.UserService; @Named @SessionScoped public class