JavaEE 6：javax.naming.NameAlreadyBoundException：使用重新绑定重写

Question

我有一个由两个EJB实现的业务接口。

UserManagementService

@Remote
public interface UserManagementService {
    // ...
}

UserManagementServiceJpaImpl

@Stateless(name="userManagementServiceJpaImpl")
public class UserManagementServiceJpaImpl implements UserManagementService {

    @EJB(beanName="userManagementDaoJpaImpl")
    private UserManagementDao userManagementDao;

    // ...
}

UserManagementServiceMockImpl

@Stateless(name="userManagementServiceMockImpl")
public class UserManagementServiceMockImpl implements UserManagementService {   

    @EJB(beanName="userManagementDaoMockImpl")
    private UserManagementDao userManagementDao;

    // ...

}

当我将应用程序部署到Glassfish 3.1时，出现以下错误：

java.lang.RuntimeException: Error while binding JNDI name com.transbinary.imdb.service.UserManagementService for EJB : userManagementServiceMockImpl
    at com.sun.ejb.containers.BaseContainer.initializeHome(BaseContainer.java:1550)
    at com.sun.ejb.containers.StatelessSessionContainer.initializeHome(StatelessSessionContainer.java:202)
    at com.sun.ejb.containers.ContainerFactoryImpl.createContainer(ContainerFactoryImpl.java:167)
    at org.glassfish.ejb.startup.EjbApplication.loadContainers(EjbApplication.java:234)
    at org.glassfish.ejb.startup.EjbDeployer.load(EjbDeployer.java:290)
    at org.glassfish.ejb.startup.EjbDeployer.load(EjbDeployer.java:101)
    at org.glassfish.internal.data.ModuleInfo.load(ModuleInfo.java:186)
    at org.glassfish.internal.data.ApplicationInfo.load(ApplicationInfo.java:249)
    at com.sun.enterprise.v3.server.ApplicationLifecycle.deploy(ApplicationLifecycle.java:460)
    at com.sun.enterprise.v3.server.ApplicationLifecycle.deploy(ApplicationLifecycle.java:240)
    at org.glassfish.deployment.admin.DeployCommand.execute(DeployCommand.java:370)
    at com.sun.enterprise.v3.admin.CommandRunnerImpl$1.execute(CommandRunnerImpl.java:360)
    at com.sun.enterprise.v3.admin.CommandRunnerImpl.doCommand(CommandRunnerImpl.java:370)
    at com.sun.enterprise.v3.admin.CommandRunnerImpl.doCommand(CommandRunnerImpl.java:1067)
    at com.sun.enterprise.v3.admin.CommandRunnerImpl.access$1200(CommandRunnerImpl.java:96)
    at com.sun.enterprise.v3.admin.CommandRunnerImpl$ExecutionContext.execute(CommandRunnerImpl.java:1247)
    at org.glassfish.deployment.autodeploy.AutoOperation.run(AutoOperation.java:145)
    at org.glassfish.deployment.autodeploy.AutoDeployer.deploy(AutoDeployer.java:577)
    at org.glassfish.deployment.autodeploy.AutoDeployer.deployAll(AutoDeployer.java:463)
    at org.glassfish.deployment.autodeploy.AutoDeployer.run(AutoDeployer.java:395)
    at org.glassfish.deployment.autodeploy.AutoDeployer.run(AutoDeployer.java:380)
    at org.glassfish.deployment.autodeploy.AutoDeployService$1.run(AutoDeployService.java:213)
    at java.util.TimerThread.mainLoop(Timer.java:512)
    at java.util.TimerThread.run(Timer.java:462)
Caused by: javax.naming.NameAlreadyBoundException: Use rebind to override
    at com.sun.enterprise.naming.impl.TransientContext.doBindOrRebind(TransientContext.java:333)
    at com.sun.enterprise.naming.impl.TransientContext.bind(TransientContext.java:268)
    at com.sun.enterprise.naming.impl.SerialContextProviderImpl.bind(SerialContextProviderImpl.java:98)
    at com.sun.enterprise.naming.impl.LocalSerialContextProviderImpl.bind(LocalSerialContextProviderImpl.java:99)
    at com.sun.enterprise.naming.impl.SerialContext.bind(SerialContext.java:672)
    at com.sun.enterprise.naming.impl.SerialContext.bind(SerialContext.java:689)
    at javax.naming.InitialContext.bind(InitialContext.java:404)
    at javax.naming.InitialContext.bind(InitialContext.java:404)
    at com.sun.enterprise.naming.impl.GlassfishNamingManagerImpl.publishObject(GlassfishNamingManagerImpl.java:208)
    at com.sun.enterprise.naming.impl.GlassfishNamingManagerImpl.publishObject(GlassfishNamingManagerImpl.java:189)
    at com.sun.ejb.containers.BaseContainer$JndiInfo.publish(BaseContainer.java:5608)
    at com.sun.ejb.containers.BaseContainer.initializeHome(BaseContainer.java:1535)
    ... 23 more

有人可以帮助我了解为什么会收到此错误以及如何解决该错误吗？

Answer 1

默认情况下，将自动应用特定于GlassFish Server的默认JNDI名称，以实现向后兼容。因此，com.transbinary.imdb.service.UserManagementService是UserManagementService接口的两种实现的默认JNDI名称。这就是为什么我得到javax.naming.NameAlreadyBoundException异常的原因。

但是因为EJB 3.1规范定义了可移植EJB JNDI名称，所以对GlassFish Server特定的JNDI名称的需求减少了。

[要为EJB模块禁用GlassFish Server特定的JNDI名称，请将disable-nonportable-jndi-names元素的值设置为true。默认值为false。

它解决了问题。

资源：http://wikis.oracle.com/display/GlassFish/Developer+Handoff+to+QA+for+EJB-8+%28Option+to+disable+GlassFish-specific+JNDI%29

Answer 2

GlassFish重新启动。 （对我有用。）

Answer 3

我也有同样的例外。就我而言，我将代码从@Stateless(mappedName = "whatever")更改为@Stateless(name = "whatever")，它解决了我的问题

Answer 4

使用重新绑定代替绑定，它应该可以工作

Answer 5

就我而言，我使用的是JBoss5.1GA，我有两个EJB实现了一个通用的本地业务接口...

我遵循@Christo Smal提出的想法，它对我有用...。另一观察：我正在部署一个耳朵，该耳朵在两个不同的EJB jars处包含两个EJB。例如：

   Ear File:
   * Jar File1: Containing EJB1
   * Jar File2: Containing EJB2
   * lib/dummy.jar: Library containing the Business Local interface