是否必须扩展javax.ejb.EJBLocalObject接口？

虽然从JBoss的4.3迁移到5.1以下问题发生：在部署时没有实现EJBLocalObject的发生是否必须扩展javax.ejb.EJBLocalObject接口？

第一种例外情况：

Caused by: java.lang.IllegalStateException: EJB 3.0 Core Specification Violation (4.6.9): The session beanÔÇÖs local interface interface com.company.project.BeanLocal must extend the javax.ejb.EJBLocalO 
bject interface. 
     at org.jboss.metadata.annotation.creator.ejb.jboss.LocalHomeProcessor.setLocal(LocalHomeProcessor.java:73) 
     at org.jboss.metadata.annotation.creator.ejb.jboss.LocalHomeProcessor.process(LocalHomeProcessor.java:66) 
     at org.jboss.metadata.annotation.creator.ejb.jboss.LocalHomeProcessor.process(LocalHomeProcessor.java:45) 
     at org.jboss.metadata.annotation.creator.AbstractProcessor.processClass(AbstractProcessor.java:215) 
     at org.jboss.metadata.annotation.creator.AbstractProcessor.processClass(AbstractProcessor.java:172) 
     at org.jboss.metadata.annotation.creator.ejb.jboss.AbstractEnterpriseBeanProcessor.process(AbstractEnterpriseBeanProcessor.j 
ava:119) 
     at org.jboss.metadata.annotation.creator.ejb.jboss.AbstractEnterpriseBeanProcessor.process(AbstractEnterpriseBeanProcessor.j 
ava:94) 
     at org.jboss.metadata.annotation.creator.ejb.jboss.AbstractEnterpriseBeanProcessor.process(AbstractEnterpriseBeanProcessor.j 
ava:52) 
     at org.jboss.metadata.annotation.creator.AbstractCreator.process(AbstractCreator.java:154) 
     at org.jboss.metadata.annotation.creator.AbstractCreator.processMetaData(AbstractCreator.java:87) 
     at org.jboss.metadata.annotation.creator.ejb.jboss.JBoss50Creator.create(JBoss50Creator.java:109) 
     at org.jboss.deployment.OptAnnotationMetaDataDeployer.processJBossMetaData(OptAnnotationMetaDataDeployer.java:134) 
     at org.jboss.deployment.OptAnnotationMetaDataDeployer.processMetaData(OptAnnotationMetaDataDeployer.java:84) 
     at org.jboss.deployment.AnnotationMetaDataDeployer.deploy(AnnotationMetaDataDeployer.java:177) 
     ... 32 more

OK，然后我实现了接口，但JBoss的ISN”不满意，现在抱怨：bean不能实现EJBLocalObject！任何想法？

Caused by: java.lang.IllegalStateException: EJB 3.0 Core Specification Violation (4.6.6): The session beanÔÇÖs business interface in 
terface com.company.project.BeanLocal must not extend the javax.ejb.EJBLocalObject interface. 
     at org.jboss.metadata.annotation.creator.ejb.jboss.LocalProcessor.addBusinessInterface(LocalProcessor.java:57) 
     at org.jboss.metadata.annotation.creator.ejb.jboss.LocalProcessor.process(LocalProcessor.java:76) 
     at org.jboss.metadata.annotation.creator.ejb.jboss.LocalProcessor.process(LocalProcessor.java:45) 
     at org.jboss.metadata.annotation.creator.AbstractProcessor.processClass(AbstractProcessor.java:222) 
     at org.jboss.metadata.annotation.creator.AbstractProcessor.processClass(AbstractProcessor.java:172) 
     at org.jboss.metadata.annotation.creator.ejb.jboss.AbstractEnterpriseBeanProcessor.process(AbstractEnterpriseBeanProcessor.j 
ava:119) 
     at org.jboss.metadata.annotation.creator.ejb.jboss.AbstractEnterpriseBeanProcessor.process(AbstractEnterpriseBeanProcessor.j 
ava:94) 
     at org.jboss.metadata.annotation.creator.ejb.jboss.AbstractEnterpriseBeanProcessor.process(AbstractEnterpriseBeanProcessor.j 
ava:52) 
     at org.jboss.metadata.annotation.creator.AbstractCreator.process(AbstractCreator.java:154) 
     at org.jboss.metadata.annotation.creator.AbstractCreator.processMetaData(AbstractCreator.java:87) 
     at org.jboss.metadata.annotation.creator.ejb.jboss.JBoss50Creator.create(JBoss50Creator.java:109) 
     at org.jboss.deployment.OptAnnotationMetaDataDeployer.processJBossMetaData(OptAnnotationMetaDataDeployer.java:134) 
     at org.jboss.deployment.OptAnnotationMetaDataDeployer.processMetaData(OptAnnotationMetaDataDeployer.java:84) 
     at org.jboss.deployment.AnnotationMetaDataDeployer.deploy(AnnotationMetaDataDeployer.java:177) 
     ... 32 more

编辑︰我应该提到，该bean是一个EJB3.0与提供了一个EJB 2.1客户端视图。

声明如下：

@TransactionManagement(TransactionManagementType.CONTAINER) 
@TransactionAttribute(TransactionAttributeType.REQUIRED) 
@Stateless 
@RemoteHome(R2PRegistrationHome.class) 
@RemoteHomeBinding(jndiBinding = JNDINames.BEAN_FOR_EJB_2_1_EJBHOME) 
@LocalHome(R2PRegistrationLocalHome.class) 
@LocalHomeBinding(jndiBinding = JNDINames.BEAN_FOR_EJB_2_1_LOCALHOME) 
public class Bean implements BeanLocal, BeanRemote { 
}

来源

2011-01-14 stacker

Bean类不应该实现组件接口。从Bean类中移除implements子句，更改BeanLocal接口以扩展EJBLocalObject，并更改BeanRemote接口以扩展EJBObject。

来源

2011-01-16 02:25:16

根据第二堆栈跟踪，似乎您使用的是相同的接口，本地和远程接口。如果分别创建单独的远程和本地接口，则应该没问题。

来源

2011-01-14 12:59:04 jjungnickel

感谢您的答复，本地和远程是分开的，我更新了我的问题 – stacker 2011-01-14 13:29:27

为了让你的生活更简单，我建议不要让一个EJB3和EJB2 bean都是单一的bean。创建一个委托给EJB3的单独的EJB2 bean。

这也使得只要您不再需要支持，就可以轻松删除EJB2 bean。

此外，您可以删除@TransactionManagement(TransactionManagementType.CONTAINER)和@TransactionAttribute(TransactionAttributeType.REQUIRED)。这些都是默认设置，并且不需要，因为EJB3强调约定优于配置。你开始编程的风格似乎有点反对EJB3的精神。如果您是唯一的程序员，这可能不会成为问题，但是受过EJB3培训的其他人可能不会对此产生反应。

下应该足够：

@Stateless 
public class Bean implements BeanLocal, BeanRemote { 
}

来源

2011-01-16 10:08:49

是否必须扩展javax.ejb.EJBLocalObject接口？

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