我创建了一个EJB项目，其中包含以下java文件。它不会在 JBoss 5.1.0 上部署，并吐出部署错误，该错误附加在下面的 java 代码之后。但是同样的jar被部署在JBoss AS 7.1上。为什么 jar 没有部署在 JBoss 5.1 上？
请注意，Bean实现BeanA具有BeanB的本地接口，BeanB的Bean实现具有BeanA的本地接口，因此它是一个循环。
豆类界面.java
package com.xyz;
import javax.ejb.Local;
@Local
public interface BeanALocalInterface {
public void executeLocal();
}
豆.java
package com.xyz;
import javax.ejb.EJB;
import javax.ejb.Stateless;
@Stateless
public class BeanA implements BeanALocalInterface {
@EJB private BeanBLocalInterface beanBLocalInterface;
public BeanA() {}
public void executeLocal() {System.out.println("executing in BeanA"); beanBLocalInterface.executeLocal();}
public void executeRemote() {System.out.println("executing in BeanA"); }
}
豆子接口.java
package com.xyz;
import javax.ejb.Local;
@Local
public interface BeanBLocalInterface {
public void executeLocal();
}
豆豆B.java
package com.xyz;
import javax.ejb.EJB;
import javax.ejb.Stateless;
@Stateless
public class BeanB implements BeanBLocalInterface {
@EJB private BeanALocalInterface localInterface;
public BeanB() { }
public void executeLocal() { localInterface.executeLocal(); }
public void executeRemote() { System.out.println("executing in BeanB");}
}
在 JBOSS 5.1.0 中部署 CyclicalBeans.jar 时的错误日志
11:59:31,557 INFO [JBossASKernel] Created KernelDeployment for: CyclicalBeans.jar
11:59:31,557 INFO [JBossASKernel] installing bean: jboss.j2ee:jar=CyclicalBeans.jar,name=BeanA,service=EJB3
11:59:31,557 INFO [JBossASKernel] with dependencies:
11:59:31,557 INFO [JBossASKernel] and demands:
11:59:31,573 INFO [JBossASKernel] jndi:BeanB/local-com.xyz.BeanBLocalInterface
11:59:31,573 INFO [JBossASKernel] jboss.ejb:service=EJBTimerService
11:59:31,573 INFO [JBossASKernel] and supplies:
11:59:31,573 INFO [JBossASKernel] jndi:BeanA/local-com.xyz.BeanALocalInterface
11:59:31,588 INFO [JBossASKernel] jndi:BeanA/local
11:59:31,588 INFO [JBossASKernel] Class:com.xyz.BeanARemoteInterface
11:59:31,588 INFO [JBossASKernel] jndi:BeanA/remote-com.xyz.BeanARemoteInterface
11:59:31,588 INFO [JBossASKernel] Class:com.xyz.BeanALocalInterface
11:59:31,604 INFO [JBossASKernel] jndi:BeanA/remote
11:59:31,604 INFO [JBossASKernel] Added bean(jboss.j2ee:jar=CyclicalBeans.jar,name=BeanA,service=EJB3) to KernelDeployment of: CyclicalBeans.jar
11:59:31,604 INFO [JBossASKernel] installing bean: jboss.j2ee:jar=CyclicalBeans.jar,name=BeanB,service=EJB3
11:59:31,619 INFO [JBossASKernel] with dependencies:
11:59:31,619 INFO [JBossASKernel] and demands:
11:59:31,619 INFO [JBossASKernel] jboss.ejb:service=EJBTimerService
11:59:31,635 INFO [JBossASKernel] jndi:BeanA/local-com.xyz.BeanALocalInterface
11:59:31,635 INFO [JBossASKernel] and supplies:
11:59:31,635 INFO [JBossASKernel] Class:com.xyz.BeanBLocalInterface
11:59:31,635 INFO [JBossASKernel] jndi:BeanB/local-com.xyz.BeanBLocalInterface
11:59:31,651 INFO [JBossASKernel] jndi:BeanB/local
11:59:31,651 INFO [JBossASKernel] jndi:BeanB/remote
11:59:31,666 INFO [JBossASKernel] Added bean(jboss.j2ee:jar=CyclicalBeans.jar,name=BeanB,service=EJB3) to KernelDeployment of: CyclicalBeans.jar
11:59:31,666 INFO [EJB3EndpointDeployer] Deploy AbstractBeanMetaData@68f7b23c{name=jboss.j2ee:jar=CyclicalBeans.jar,name=BeanA,service=EJB3_endpoint bean=org.jboss.ejb3.endpoint.deployers.impl.EndpointImpl properties=[container] constructor=null autowireCandidate=true}
11:59:31,666 INFO [EJB3EndpointDeployer] Deploy AbstractBeanMetaData@3b870737{name=jboss.j2ee:jar=CyclicalBeans.jar,name=BeanB,service=EJB3_endpoint bean=org.jboss.ejb3.endpoint.deployers.impl.EndpointImpl properties=[container] constructor=null autowireCandidate=true}
11:59:31,744 WARN [HDScanner] Failed to process changes
org.jboss.deployers.client.spi.IncompleteDeploymentException: Summary of incomplete deployments (SEE PREVIOUS ERRORS FOR DETAILS):
DEPLOYMENTS MISSING DEPENDENCIES:
Deployment "jboss.j2ee:jar=CyclicalBeans.jar,name=BeanA,service=EJB3" is missing the following dependencies:
Dependency "<UNKNOWN jboss.j2ee:jar=CyclicalBeans.jar,name=BeanA,service=EJB3>" (should be in state "Described", but is actually in state "** UNRESOLVED Demands 'jndi:BeanB/local-com.xyz.BeanBLocalInterface' **")
Deployment "jboss.j2ee:jar=CyclicalBeans.jar,name=BeanA,service=EJB3_endpoint" is missing the following dependencies:
Dependency "jboss.j2ee:jar=CyclicalBeans.jar,name=BeanA,service=EJB3" (should be in state "Configured", but is actually in state "PreInstall")
Deployment "jboss.j2ee:jar=CyclicalBeans.jar,name=BeanB,service=EJB3" is missing the following dependencies:
Dependency "<UNKNOWN jboss.j2ee:jar=CyclicalBeans.jar,name=BeanB,service=EJB3>" (should be in state "Described", but is actually in state "** UNRESOLVED Demands 'jndi:BeanA/local-com.xyz.BeanALocalInterface' **")
Deployment "jboss.j2ee:jar=CyclicalBeans.jar,name=BeanB,service=EJB3_endpoint" is missing the following dependencies:
Dependency "jboss.j2ee:jar=CyclicalBeans.jar,name=BeanB,service=EJB3" (should be in state "Configured", but is actually in state "PreInstall")
DEPLOYMENTS IN ERROR:
Deployment "<UNKNOWN jboss.j2ee:jar=CyclicalBeans.jar,name=BeanA,service=EJB3>" is in error due to the following reason(s): ** UNRESOLVED Demands 'jndi:BeanB/local-com.xyz.BeanBLocalInterface' **
Deployment "<UNKNOWN jboss.j2ee:jar=CyclicalBeans.jar,name=BeanB,service=EJB3>" is in error due to the following reason(s): ** UNRESOLVED Demands 'jndi:BeanA/local-com.xyz.BeanALocalInterface' **
at org.jboss.deployers.plugins.deployers.DeployersImpl.checkComplete(DeployersImpl.java:993)
at org.jboss.deployers.plugins.deployers.DeployersImpl.checkComplete(DeployersImpl.java:939)
at org.jboss.deployers.plugins.main.MainDeployerImpl.checkComplete(MainDeployerImpl.java:873)
at org.jboss.system.server.profileservice.repository.MainDeployerAdapter.checkComplete(MainDeployerAdapter.java:128)
at org.jboss.system.server.profileservice.hotdeploy.HDScanner.scan(HDScanner.java:369)
at org.jboss.system.server.profileservice.hotdeploy.HDScanner.run(HDScanner.java:255)
at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:439)
at java.util.concurrent.FutureTask$Sync.innerRunAndReset(FutureTask.java:317)
at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:150)
at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$101(ScheduledThreadPoolExecutor.java:98)
at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.runPeriodic(ScheduledThreadPoolExecutor.java:180)
at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:204)
at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:895)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:918)
at java.lang.Thread.run(Thread.java:662)
注入的
Bean 上的@IgnoreDependency注释将解决此问题。请修改 BeanA.java 和 BeanB.java如下所示：
豆豆.java
package com.xyz;
import javax.ejb.EJB;
import javax.ejb.Stateless;
import org.jboss.ejb3.annotation.IgnoreDependency;
@Stateless
public class BeanA implements BeanALocalInterface {
@IgnoreDependency
@EJB(name="ejb/BeanBLocalInterface") private BeanBLocalInterface beanBLocalInterface;
public BeanA() {}
public void executeLocal() {System.out.println("executing in BeanA"); beanBLocalInterface.executeLocal();}
public void executeRemote() {System.out.println("executing in BeanA"); }
}
豆B.java
package com.xyz;
import javax.ejb.EJB;
import javax.ejb.Stateless;
import org.jboss.ejb3.annotation.IgnoreDependency;
@Stateless
public class BeanB implements BeanBLocalInterface {
@IgnoreDependency
@EJB(name="ejb/BeanALocalInterface ") private BeanALocalInterface localInterface;
public BeanB() { }
public void executeLocal() { localInterface.executeLocal(); }
public void executeRemote() { System.out.println("executing in BeanB");}
}
我从以下问题答案链接中得出了我的解决方案。 答案链接