Java @在WebLogic（EJB3.1）中两次实例化Startup@Singleton
我有一个标记为Java @在WebLogic（EJB3.1）中两次实例化Startup@Singleton,java,java-ee-6,ejb-3.1,Java,Java Ee 6,Ejb 3.1,我有一个标记为@Startup和@Singleton的类，构造函数被调用了两次 为什么要叫两次 WebLogic 12.1.1 在本地运行（不是群集） @后构造在那里时也被称为两次 与XML配置无关（weblogic-ejb-jar.XML等） 下面是课堂： import java.util.concurrent.atomic.AtomicInteger; import javax.ejb.Singleton; import javax.ejb.Startup; @Startup @Si
@Startup@Singleton- WebLogic 12.1.1
- 在本地运行（不是群集）
- @后构造在那里时也被称为两次
- 与XML配置无关（weblogic-ejb-jar.XML等）
import java.util.concurrent.atomic.AtomicInteger;
import javax.ejb.Singleton;
import javax.ejb.Startup;
@Startup
@Singleton
public class CacheStartupListener {
static AtomicInteger count= new AtomicInteger(0);
public CacheStartupListener() {
System.err.println("Singleton invoked " + count.incrementAndGet() + " " + getClass().getClassLoader().toString());
}
}
wlfullclient-12.1.1jarDaemon Thread [[ACTIVE] ExecuteThread: '0' for queue: 'weblogic.kernel.Default (self-tuning)'] (Suspended (breakpoint at line 30 in CacheStartupListener)) (out of synch)
CacheStartupListener_m3hhum_NoIntfViewImpl(CacheStartupListener).<init>() line: 30 (out of synch)
CacheStartupListener_m3hhum_NoIntfViewImpl.<init>(SingletonLocalObject) line: not available
NativeConstructorAccessorImpl.newInstance0(Constructor, Object[]) line: not available [native method]
NativeConstructorAccessorImpl.newInstance(Object[]) line: 57
DelegatingConstructorAccessorImpl.newInstance(Object[]) line: 45
Constructor<T>.newInstance(Object...) line: 525
SingletonEJBLocalHomeImpl.allocateBI(Class<T>) line: 45
SingletonEJBLocalHomeImpl.prepare() line: 30
SingletonSessionBeanInfoImpl(SessionBeanInfoImpl).prepare() line: 458
SingletonSessionBeanInfoImpl.prepare() line: 115
EJBDeployer.setupBeanInfos() line: 767
EJBDeployer.prepare(VirtualJarFile, EjbDescriptorBean) line: 920
EJBModule.prepare() line: 419
ScopedModuleDriver.prepare() line: 188
ExtensibleModuleWrapper.prepare() line: 83
ModuleListenerInvoker.prepare() line: 100
ModuleStateDriver$1.next(Module) line: 172
ModuleStateDriver$1.next(Object) line: 167
StateMachineDriver<StateMachine>.nextState(StateChange<StateMachine>, StateMachine[]) line: 35
ModuleStateDriver.prepare(Module[]) line: 38
DeploymentCallbackFlow.prepare(Module[]) line: 139
DeploymentCallbackFlow.prepare() line: 55
BaseDeployment$1.next(Object) line: 706
StateMachineDriver<StateMachine>.nextState(StateChange<StateMachine>, StateMachine[]) line: 35
EarDeployment(BaseDeployment).prepare(DeploymentContext) line: 237
EarDeployment.prepare(DeploymentContext) line: 61
DeploymentStateChecker.prepare(DeploymentContext) line: 158
AppContainerInvoker.prepare(DeploymentContext) line: 60
RedeployOperation.createAndPrepareContainer() line: 104
RedeployOperation.doPrepare() line: 138
RedeployOperation(AbstractOperation).prepare() line: 229
DeploymentManager.handleDeploymentPrepare(Deployment, DeploymentManager$DeploymentRequestInfo) line: 747
DeploymentManager.prepareDeploymentList(ArrayList, DeploymentContext) line: 1216
DeploymentManager.handlePrepare(DeploymentContext) line: 250
DeploymentServiceDispatcher.prepare(DeploymentContext) line: 159
DeploymentReceiverCallbackDeliverer.doPrepareCallback(DeploymentContext) line: 171
DeploymentReceiverCallbackDeliverer.access$000(DeploymentReceiverCallbackDeliverer, DeploymentContext) line: 13
DeploymentReceiverCallbackDeliverer$1.run() line: 46
SelfTuningWorkManagerImpl$WorkAdapterImpl.run() line: 545
ExecuteThread.execute(Runnable) line: 256
ExecuteThread.run() line: 221
Daemon Thread [[ACTIVE] ExecuteThread: '0' for queue: 'weblogic.kernel.Default (self-tuning)'] (Suspended (breakpoint at line 30 in CacheStartupListener)) (out of synch)
CacheStartupListener_m3hhum_Impl(CacheStartupListener).<init>() line: 30 (out of synch)
CacheStartupListener_m3hhum_Impl.<init>() line: not available
NativeConstructorAccessorImpl.newInstance0(Constructor, Object[]) line: not available [native method]
NativeConstructorAccessorImpl.newInstance(Object[]) line: 57
DelegatingConstructorAccessorImpl.newInstance(Object[]) line: 45
Constructor<T>.newInstance(Object...) line: 525
WeldConstructorImpl<T>.newInstance(Object...) line: 204
ConstructorInjectionPoint<T>.newInstance(BeanManagerImpl, CreationalContext<?>) line: 117
ExtendedSessionBean(SessionBean<T>).createInstance(CreationalContext<T>) line: 212
ExtendedSessionBean.derivedCreateInstance(CreationalContext) line: 35
WeldEjbBeanManager$ExtendedInjectionTarget.produce(CreationalContext) line: 131
WeldEjbBeanManager.newBeanInstance(String) line: 78
InjectionBasedEjbComponentCreator.getBean(String, Class, boolean) line: 75
SingletonSessionManager(BaseEJBManager).createNewBeanInstance() line: 209
SingletonSessionManager.constructAndInitBean() line: 353
SingletonSessionManager.access$300(SingletonSessionManager) line: 63
SingletonSessionManager$SingletonLifecycleManager.doActualInit() line: 798
SingletonSessionManager$SingletonLifecycleManager.initInternal(boolean) line: 744
SingletonSessionManager$SingletonLifecycleManager.init() line: 631
SingletonSessionManager.init() line: 280
SingletonSessionManager.perhapsInit() line: 276
EJBDeployer.initializeBeans() line: 1287
EJBDeployer.start() line: 1174
EJBModule.start() line: 590
ModuleStateDriver$3.next(Module) line: 213
ModuleStateDriver$3.next(Object) line: 208
StateMachineDriver<StateMachine>.nextState(StateChange<StateMachine>, StateMachine[]) line: 35
ModuleStateDriver.start(Module[]) line: 70
ScopedModuleDriver.start() line: 212
ExtensibleModuleWrapper.start() line: 111
ModuleListenerInvoker.start() line: 124
ModuleStateDriver$3.next(Module) line: 213
ModuleStateDriver$3.next(Object) line: 208
StateMachineDriver<StateMachine>.nextState(StateChange<StateMachine>, StateMachine[]) line: 35
ModuleStateDriver.start(Module[]) line: 70
StartModulesFlow.activate() line: 24
BaseDeployment$2.next(Object) line: 729
StateMachineDriver<StateMachine>.nextState(StateChange<StateMachine>, StateMachine[]) line: 35
EarDeployment(BaseDeployment).activate(DeploymentContext) line: 258
EarDeployment.activate(DeploymentContext) line: 61
DeploymentStateChecker.activate(DeploymentContext) line: 165
AppContainerInvoker.activate(DeploymentContext) line: 79
RedeployOperation(AbstractOperation).activate(Deployment) line: 582
RedeployOperation(ActivateOperation).activateDeployment() line: 148
RedeployOperation(ActivateOperation).doCommit() line: 114
RedeployOperation(AbstractOperation).commit() line: 335
DeploymentManager.handleDeploymentCommit(Deployment, AbstractOperation) line: 844
DeploymentManager.activateDeploymentList(ArrayList, DeploymentManager$DeploymentRequestInfo) line: 1253
DeploymentManager.handleCommit(DeploymentContext) line: 440
DeploymentServiceDispatcher.commit(DeploymentContext) line: 163
DeploymentReceiverCallbackDeliverer.doCommitCallback(DeploymentContext) line: 195
DeploymentReceiverCallbackDeliverer.access$100(DeploymentReceiverCallbackDeliverer, DeploymentContext) line: 13
DeploymentReceiverCallbackDeliverer$2.run() line: 68
SelfTuningWorkManagerImpl$WorkAdapterImpl.run() line: 545
ExecuteThread.execute(Runnable) line: 256
ExecuteThread.run() line: 221
Daemon线程[[ACTIVE]ExecuteThread:'0'用于队列：'weblogic.kernel.Default（自调优）'（挂起（CacheStartupListener中第30行的断点））（不同步）
CacheStartupListener_m3hhum_NoIntfViewImpl（CacheStartupListener）。（）行：30（不同步）
CacheStartupListener_m3hhum_NoIntfViewImpl.（SingletonLocalObject）行：不可用
NativeConstructorAccessorImpl.newInstance0（构造函数，对象[]）行：不可用[本机方法]
NativeConstructorAccessorImpl.newInstance（对象[]）行：57
DelegatingConstructorAccessorImpl.newInstance（对象[]）行：45
构造函数.newInstance（对象…）行：525
SingletonEJBLocalHomeImpl.allocateBI（类）行：45
SingletonEJBLocalHomeImpl.prepare（）行：30
SingletonSessionBeanInfoImpl（SessionBeanInfoImpl）.prepare（）行：458
SingletonSessionBeanInfoImpl.prepare（）行：115
EJBDeployer.setupBeanInfos（）行：767
准备（VirtualJarFile，EjbDescriptorBean）行：920
EJBModule.prepare（）行：419
ScopedModuleDriver.prepare（）行：188
ExtensibleModuleWrapper.prepare（）行：83
ModuleListenerInvoker.prepare（）行：100
ModuleStateDriver$1。下一（模块）行：172
ModuleStateDriver$1。下一行（对象）167
StateMachineDriver.nextState（StateChange，StateMachine[]）行：35
ModuleStateDriver.准备（模块[]）行：38
部署调用回流。准备（模块[]）行：139
DeploymentCallbackFlow.prepare（）行：55
BaseDeployment$1。下一（对象）行：706
StateMachineDriver.nextState（StateChange，StateMachine[]）行：35
EarDeployment（BaseDeployment）.准备（DeploymentContext）行：237
EarDeployment.prepare（DeploymentContext）行：61
DeploymentStateChecker.prepare（DeploymentContext）行：158
AppContainerInvoker.prepare（DeploymentContext）行：60
RedeployOperation.createAndPrepareContainer（）行：104
RedeployOperation.doPrepare（）行：138
重新部署操作（AbstractOperation）.prepare（）行：229
DeploymentManager.handleDeploymentPrepare（部署，DeploymentManager$DeploymentRequestInfo）行：747
DeploymentManager.prepareDeploymentList（ArrayList，DeploymentContext）行：1216
DeploymentManager.handlePrepare（DeploymentContext）行：250
DeploymentServiceDispatcher.prepare（DeploymentContext）行：159
DeploymentReceiverCallbackDeliver.doPrepareCallback（DeploymentContext）行：171
DeploymentReceiverCallbackDeliver.access$000（DeploymentReceiverCallbackDeliver，DeploymentContext）行：13
DeploymentReceiverCallbackDeliver$1.run（）行：46
SelfTuningWorkManagerImpl$WorkAdapterImpl.run（）行：545
ExecuteThread.execute（可运行）行：256
ExecuteThread.run（）行：221
Daemon Thread [[ACTIVE] ExecuteThread: '0' for queue: 'weblogic.kernel.Default (self-tuning)'] (Suspended (breakpoint at line 30 in CacheStartupListener)) (out of synch)
CacheStartupListener_m3hhum_NoIntfViewImpl(CacheStartupListener).<init>() line: 30 (out of synch)
CacheStartupListener_m3hhum_NoIntfViewImpl.<init>(SingletonLocalObject) line: not available
NativeConstructorAccessorImpl.newInstance0(Constructor, Object[]) line: not available [native method]
NativeConstructorAccessorImpl.newInstance(Object[]) line: 57
DelegatingConstructorAccessorImpl.newInstance(Object[]) line: 45
Constructor<T>.newInstance(Object...) line: 525
SingletonEJBLocalHomeImpl.allocateBI(Class<T>) line: 45
SingletonEJBLocalHomeImpl.prepare() line: 30
SingletonSessionBeanInfoImpl(SessionBeanInfoImpl).prepare() line: 458
SingletonSessionBeanInfoImpl.prepare() line: 115
EJBDeployer.setupBeanInfos() line: 767
EJBDeployer.prepare(VirtualJarFile, EjbDescriptorBean) line: 920
EJBModule.prepare() line: 419
ScopedModuleDriver.prepare() line: 188
ExtensibleModuleWrapper.prepare() line: 83
ModuleListenerInvoker.prepare() line: 100
ModuleStateDriver$1.next(Module) line: 172
ModuleStateDriver$1.next(Object) line: 167
StateMachineDriver<StateMachine>.nextState(StateChange<StateMachine>, StateMachine[]) line: 35
ModuleStateDriver.prepare(Module[]) line: 38
DeploymentCallbackFlow.prepare(Module[]) line: 139
DeploymentCallbackFlow.prepare() line: 55
BaseDeployment$1.next(Object) line: 706
StateMachineDriver<StateMachine>.nextState(StateChange<StateMachine>, StateMachine[]) line: 35
EarDeployment(BaseDeployment).prepare(DeploymentContext) line: 237
EarDeployment.prepare(DeploymentContext) line: 61
DeploymentStateChecker.prepare(DeploymentContext) line: 158
AppContainerInvoker.prepare(DeploymentContext) line: 60
RedeployOperation.createAndPrepareContainer() line: 104
RedeployOperation.doPrepare() line: 138
RedeployOperation(AbstractOperation).prepare() line: 229
DeploymentManager.handleDeploymentPrepare(Deployment, DeploymentManager$DeploymentRequestInfo) line: 747
DeploymentManager.prepareDeploymentList(ArrayList, DeploymentContext) line: 1216
DeploymentManager.handlePrepare(DeploymentContext) line: 250
DeploymentServiceDispatcher.prepare(DeploymentContext) line: 159
DeploymentReceiverCallbackDeliverer.doPrepareCallback(DeploymentContext) line: 171
DeploymentReceiverCallbackDeliverer.access$000(DeploymentReceiverCallbackDeliverer, DeploymentContext) line: 13
DeploymentReceiverCallbackDeliverer$1.run() line: 46
SelfTuningWorkManagerImpl$WorkAdapterImpl.run() line: 545
ExecuteThread.execute(Runnable) line: 256
ExecuteThread.run() line: 221
Daemon Thread [[ACTIVE] ExecuteThread: '0' for queue: 'weblogic.kernel.Default (self-tuning)'] (Suspended (breakpoint at line 30 in CacheStartupListener)) (out of synch)
CacheStartupListener_m3hhum_Impl(CacheStartupListener).<init>() line: 30 (out of synch)
CacheStartupListener_m3hhum_Impl.<init>() line: not available
NativeConstructorAccessorImpl.newInstance0(Constructor, Object[]) line: not available [native method]
NativeConstructorAccessorImpl.newInstance(Object[]) line: 57
DelegatingConstructorAccessorImpl.newInstance(Object[]) line: 45
Constructor<T>.newInstance(Object...) line: 525
WeldConstructorImpl<T>.newInstance(Object...) line: 204
ConstructorInjectionPoint<T>.newInstance(BeanManagerImpl, CreationalContext<?>) line: 117
ExtendedSessionBean(SessionBean<T>).createInstance(CreationalContext<T>) line: 212
ExtendedSessionBean.derivedCreateInstance(CreationalContext) line: 35
WeldEjbBeanManager$ExtendedInjectionTarget.produce(CreationalContext) line: 131
WeldEjbBeanManager.newBeanInstance(String) line: 78
InjectionBasedEjbComponentCreator.getBean(String, Class, boolean) line: 75
SingletonSessionManager(BaseEJBManager).createNewBeanInstance() line: 209
SingletonSessionManager.constructAndInitBean() line: 353
SingletonSessionManager.access$300(SingletonSessionManager) line: 63
SingletonSessionManager$SingletonLifecycleManager.doActualInit() line: 798
SingletonSessionManager$SingletonLifecycleManager.initInternal(boolean) line: 744
SingletonSessionManager$SingletonLifecycleManager.init() line: 631
SingletonSessionManager.init() line: 280
SingletonSessionManager.perhapsInit() line: 276
EJBDeployer.initializeBeans() line: 1287
EJBDeployer.start() line: 1174
EJBModule.start() line: 590
ModuleStateDriver$3.next(Module) line: 213
ModuleStateDriver$3.next(Object) line: 208
StateMachineDriver<StateMachine>.nextState(StateChange<StateMachine>, StateMachine[]) line: 35
ModuleStateDriver.start(Module[]) line: 70
ScopedModuleDriver.start() line: 212
ExtensibleModuleWrapper.start() line: 111
ModuleListenerInvoker.start() line: 124
ModuleStateDriver$3.next(Module) line: 213
ModuleStateDriver$3.next(Object) line: 208
StateMachineDriver<StateMachine>.nextState(StateChange<StateMachine>, StateMachine[]) line: 35
ModuleStateDriver.start(Module[]) line: 70
StartModulesFlow.activate() line: 24
BaseDeployment$2.next(Object) line: 729
StateMachineDriver<StateMachine>.nextState(StateChange<StateMachine>, StateMachine[]) line: 35
EarDeployment(BaseDeployment).activate(DeploymentContext) line: 258
EarDeployment.activate(DeploymentContext) line: 61
DeploymentStateChecker.activate(DeploymentContext) line: 165
AppContainerInvoker.activate(DeploymentContext) line: 79
RedeployOperation(AbstractOperation).activate(Deployment) line: 582
RedeployOperation(ActivateOperation).activateDeployment() line: 148
RedeployOperation(ActivateOperation).doCommit() line: 114
RedeployOperation(AbstractOperation).commit() line: 335
DeploymentManager.handleDeploymentCommit(Deployment, AbstractOperation) line: 844
DeploymentManager.activateDeploymentList(ArrayList, DeploymentManager$DeploymentRequestInfo) line: 1253
DeploymentManager.handleCommit(DeploymentContext) line: 440
DeploymentServiceDispatcher.commit(DeploymentContext) line: 163
DeploymentReceiverCallbackDeliverer.doCommitCallback(DeploymentContext) line: 195
DeploymentReceiverCallbackDeliverer.access$100(DeploymentReceiverCallbackDeliverer, DeploymentContext) line: 13
DeploymentReceiverCallbackDeliverer$2.run() line: 68
SelfTuningWorkManagerImpl$WorkAdapterImpl.run() line: 545
ExecuteThread.execute(Runnable) line: 256
ExecuteThread.run() line: 221
Daemon线程[[ACTIVE]ExecuteThread:'0'用于队列：'weblogic.kernel.Default（自调优）'（挂起（CacheStartupListener中第30行的断点））（不同步）
CacheStartupListener_m3hhum_Impl（CacheStartupListener）。（）行：30（不同步）
CacheStartupListener_m3hhum_Impl.（）行：不可用
NativeConstructorAccessorImpl.newInstance0（构造函数，对象[]）行：不可用[本机方法]
NativeConstructorAccessorImpl.newInstance（对象[]）行：57
DelegatingConstructorAccessorImpl.newInstance（对象[]）行：45
构造函数.newInstance（对象…）行：525
WeldConstructorImpl.newInstance（对象…）行：204
ConstructorInjectionPoint.newInstance（BeanManagerImpl，CreationContext）行：117
ExtendedSessionBean（SessionBean）.createInstance（CreationContext）行：212
ExtendedSessionBean.derivedCreateInstance（CreationContext）行：35
WeldEjbBeanManager$ExtendedInjectionTarget.Product（CreationContext）行：131
WeldEjbBeanManager.newBeanInstance（字符串）行：78
InjectionBasedEjbComponentCreator.getBean（字符串、类、布尔值）行：75
SingletonSessionManager（BaseJBManager）.createNewBeanInstance（）行：209
SingletonSessionManager.constructAndInitBean（）行：353
SingletonSessionManager.access$300（SingletonSessionManager）行：63
SingletonSessionManager$SingletonLifecycleManager.doActualInit（）行：798
SingletonSessionManager$SingletonLifecycleManager.initInternal（布尔）行：744
SingletonSessionManager$SingletonLifecycleManager.init（）行：631
SingletonSessionManager.init（）行：280
SingletonSessionManager.perhapsInit（）行：276
EJBDeployer.initializeBeans（）行：1287
EJBDeployer.start（）行：1174
EJBModule.start（）行：590
ModuleStateDriver$3。下一行（模块）代码：213
ModuleStateDriver$3。下一行（对象）208
StateMachineDriver.nextState（StateChange，StateMachine[]）行：35
ModuleStateDriver.开始（模块[]）行：70
ScopedModuleDriver.start（）行：212
ExtensibleModuleWrapper.start（）行：111
ModuleListenerInvoker.start（）行：124
ModuleStateDriver$3。下一行（模块）代码：213
ModuleStateDriver$3.next（对象）