是否必須擴展javax.ejb.EJBLocalObject接口？

雖然從JBoss的4.3遷移到5.1以下問題發生：在部署時沒有實現EJBLocalObject的發生是否必須擴展javax.ejb.EJBLocalObject接口？

第一種例外情況：

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，然後我實現了接口，但JBoss的ISN」不滿意，現在抱怨：bean不能實現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

編輯︰我應該提到，該bean是一個EJB3.0與提供了一個EJB 2.1客戶端視圖。

聲明如下：

@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 { 
}

來源

2011-01-14 stacker

Bean類不應該實現組件接口。從Bean類中移除implements子句，更改BeanLocal接口以擴展EJBLocalObject，並更改BeanRemote接口以擴展EJBObject。

來源

2011-01-16 02:25:16

根據第二堆棧跟蹤，似乎您使用的是相同的接口，本地和遠程接口。如果分別創建單獨的遠程和本地接口，則應該沒問題。

來源

2011-01-14 12:59:04 jjungnickel

感謝您的答覆，本地和遠程是分開的，我更新了我的問題 – stacker 2011-01-14 13:29:27

爲了讓你的生活更簡單，我建議不要讓一個EJB3和EJB2 bean都是單一的bean。創建一個委託給EJB3的單獨的EJB2 bean。

這也使得只要您不再需要支持，就可以輕鬆刪除EJB2 bean。

此外，您可以刪除@TransactionManagement(TransactionManagementType.CONTAINER)和@TransactionAttribute(TransactionAttributeType.REQUIRED)。這些都是默認設置，並且不需要，因爲EJB3強調約定優於配置。你開始編程的風格似乎有點反對EJB3的精神。如果您是唯一的程序員，這可能不會成爲問題，但是受過EJB3培訓的其他人可能不會對此產生反應。

下應該足夠：

@Stateless 
public class Bean implements BeanLocal, BeanRemote { 
}

來源

2011-01-16 10:08:49

是否必須擴展javax.ejb.EJBLocalObject接口？

回答

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