基本上我想用我的计时器检索一些属性，但我一直得到一个空指针，因为属性 bean 似乎从不调用@postconstruct。任何想法为什么？
DataCaptureTimer.java：
import java.io.File;
import java.io.Serializable;
import javax.annotation.PostConstruct;
import javax.ejb.Schedule;
import javax.ejb.Singleton;
import javax.ejb.Startup;
import javax.enterprise.context.ApplicationScoped;
import javax.inject.Inject;
import org.slf4j.Logger;
@ApplicationScoped
@Startup
public class DataCaptureTimer implements Serializable {
private static final long serialVersionUID = -1L;
@Inject
private DataCaptureBP dataCaptureBP;
@Inject
private transient Logger logger;
@Inject
private PropertiesBean propertiesBean;
private File dataAnalyticsDirectory;
@PostConstruct
public void setUpDataCaptureTimer(){
}
@Schedule(hour = "18", minute = "24")
public void automaticProcessing() {
if(logger.isInfoEnabled()) {
logger.info("Calling DataCapture");
}
dataAnalyticsDirectory = new File(propertiesBean.getProperty("gen.data.analytics.directory"));
}
}
}
属性 bean
import java.io.FileInputStream;
import java.io.IOException;
import java.util.Properties;
import javax.annotation.PostConstruct;
import javax.enterprise.context.ApplicationScoped;
import javax.inject.Named;
@ApplicationScoped
public class PropertiesBean {
private static final String SYSTEM_PROPERTIES_NAME = "system.properties";
private Properties props = new Properties();
public PropertiesBean(){
}
/**
* Loads all the properties from an external props file
*/
@PostConstruct
public void initiateProperties(){
String loc = System.getProperty("jboss.server.config.dir") + "/" + SYSTEM_PROPERTIES_NAME;
try {
props.load(new FileInputStream(loc));
} catch (IOException e) {
e.printStackTrace();
}
}
/**
* Retrieves different system properties by a given key
* @param key Key to desired system property
* @return String the value of the property with a matching key
*/
public String getProperty(String key){
return props.getProperty(key);
}
}
堆栈跟踪
09:19:34,617 ERROR [org.jboss.as.ejb3] (EJB default - 5) JBAS014122: Error during retrying timeout for timer: [id=fd2f6756-8621-4977-9b65-c4110c79a149 timedObjectId=epcfe-web-0.0.1-SNAPSHOT.epcfe-web-
0.0.1-SNAPSHOT.DataCaptureTimer auto-timer?:true persistent?:true timerService=org.jboss.as.ejb3.timerservice.TimerServiceImpl@70ceb77f initialExpiration=Tue Aug 14 09:19:00 EDT 2012 intervalDuration(
in milli sec)=0 nextExpiration=Wed Aug 15 09:19:00 EDT 2012 timerState=RETRY_TIMEOUT: javax.ejb.EJBException: java.lang.NullPointerException
at org.jboss.as.ejb3.tx.CMTTxInterceptor.handleExceptionInOurTx(CMTTxInterceptor.java:165) [jboss-as-ejb3-7.1.2.Final-redhat-1.jar:7.1.2.Final-redhat-1]
at org.jboss.as.ejb3.tx.TimerCMTTxInterceptor.handleExceptionInOurTx(TimerCMTTxInterceptor.java:53) [jboss-as-ejb3-7.1.2.Final-redhat-1.jar:7.1.2.Final-redhat-1]
at org.jboss.as.ejb3.tx.CMTTxInterceptor.invokeInOurTx(CMTTxInterceptor.java:229) [jboss-as-ejb3-7.1.2.Final-redhat-1.jar:7.1.2.Final-redhat-1]
at org.jboss.as.ejb3.tx.CMTTxInterceptor.required(CMTTxInterceptor.java:303) [jboss-as-ejb3-7.1.2.Final-redhat-1.jar:7.1.2.Final-redhat-1]
at org.jboss.as.ejb3.tx.CMTTxInterceptor.processInvocation(CMTTxInterceptor.java:189) [jboss-as-ejb3-7.1.2.Final-redhat-1.jar:7.1.2.Final-redhat-1]
at org.jboss.invocation.InterceptorContext.proceed(InterceptorContext.java:288) [jboss-invocation-1.1.1.Final-redhat-1.jar:1.1.1.Final-redhat-1]
at org.jboss.as.ejb3.component.interceptors.CurrentInvocationContextInterceptor.processInvocation(CurrentInvocationContextInterceptor.java:41) [jboss-as-ejb3-7.1.2.Final-redhat-1.jar:7.1.2.Fin
al-redhat-1]
at org.jboss.invocation.InterceptorContext.proceed(InterceptorContext.java:288) [jboss-invocation-1.1.1.Final-redhat-1.jar:1.1.1.Final-redhat-1]
at org.jboss.as.ejb3.component.interceptors.ShutDownInterceptorFactory$1.processInvocation(ShutDownInterceptorFactory.java:42) [jboss-as-ejb3-7.1.2.Final-redhat-1.jar:7.1.2.Final-redhat-1]
at org.jboss.invocation.InterceptorContext.proceed(InterceptorContext.java:288) [jboss-invocation-1.1.1.Final-redhat-1.jar:1.1.1.Final-redhat-1]
at org.jboss.as.ee.component.NamespaceContextInterceptor.processInvocation(NamespaceContextInterceptor.java:50) [jboss-as-ee-7.1.2.Final-redhat-1.jar:7.1.2.Final-redhat-1]
at org.jboss.invocation.InterceptorContext.proceed(InterceptorContext.java:288) [jboss-invocation-1.1.1.Final-redhat-1.jar:1.1.1.Final-redhat-1]
at org.jboss.as.ejb3.component.interceptors.AdditionalSetupInterceptor.processInvocation(AdditionalSetupInterceptor.java:43) [jboss-as-ejb3-7.1.2.Final-redhat-1.jar:7.1.2.Final-redhat-1]
at org.jboss.invocation.InterceptorContext.proceed(InterceptorContext.java:288) [jboss-invocation-1.1.1.Final-redhat-1.jar:1.1.1.Final-redhat-1]
at org.jboss.as.ee.component.TCCLInterceptor.processInvocation(TCCLInterceptor.java:45) [jboss-as-ee-7.1.2.Final-redhat-1.jar:7.1.2.Final-redhat-1]
at org.jboss.invocation.InterceptorContext.proceed(InterceptorContext.java:288) [jboss-invocation-1.1.1.Final-redhat-1.jar:1.1.1.Final-redhat-1]
at org.jboss.invocation.ChainedInterceptor.processInvocation(ChainedInterceptor.java:61) [jboss-invocation-1.1.1.Final-redhat-1.jar:1.1.1.Final-redhat-1]
at org.jboss.as.ejb3.timerservice.TimedObjectInvokerImpl.callTimeout(TimedObjectInvokerImpl.java:102) [jboss-as-ejb3-7.1.2.Final-redhat-1.jar:7.1.2.Final-redhat-1]
at org.jboss.as.ejb3.timerservice.task.CalendarTimerTask.callTimeout(CalendarTimerTask.java:60) [jboss-as-ejb3-7.1.2.Final-redhat-1.jar:7.1.2.Final-redhat-1]
at org.jboss.as.ejb3.timerservice.task.TimerTask.retryTimeout(TimerTask.java:184) [jboss-as-ejb3-7.1.2.Final-redhat-1.jar:7.1.2.Final-redhat-1]
at org.jboss.as.ejb3.timerservice.task.TimerTask.run(TimerTask.java:140) [jboss-as-ejb3-7.1.2.Final-redhat-1.jar:7.1.2.Final-redhat-1]
at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:441) [rt.jar:1.6.0_30]
at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:303) [rt.jar:1.6.0_30]
at java.util.concurrent.FutureTask.run(FutureTask.java:138) [rt.jar:1.6.0_30]
at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886) [rt.jar:1.6.0_30]
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908) [rt.jar:1.6.0_30]
at java.lang.Thread.run(Thread.java:662) [rt.jar:1.6.0_30]
at org.jboss.threads.JBossThread.run(JBossThread.java:122) [jboss-threads-2.0.0.GA-redhat-1.jar:2.0.0.GA-redhat-1]
Caused by: java.lang.NullPointerException
at java.io.File.<init>(File.java:222) [rt.jar:1.6.0_30]
at com.advancestores.storechannel.catalog.presentation.timer.DataCaptureTimer.automaticProcessing(DataCaptureTimer.java:62)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) [rt.jar:1.6.0_30]
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39) [rt.jar:1.6.0_30]
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25) [rt.jar:1.6.0_30]
at java.lang.reflect.Method.invoke(Method.java:597) [rt.jar:1.6.0_30]
at org.jboss.as.ee.component.ManagedReferenceMethodInterceptorFactory$ManagedReferenceMethodInterceptor.processInvocation(ManagedReferenceMethodInterceptorFactory.java:72) [jboss-as-ee-7.1.2.F
inal-redhat-1.jar:7.1.2.Final-redhat-1]
at org.jboss.invocation.InterceptorContext.proceed(InterceptorContext.java:288) [jboss-invocation-1.1.1.Final-redhat-1.jar:1.1.1.Final-redhat-1]
at org.jboss.invocation.InterceptorContext$Invocation.proceed(InterceptorContext.java:374) [jboss-invocation-1.1.1.Final-redhat-1.jar:1.1.1.Final-redhat-1]
at org.jboss.as.weld.ejb.Jsr299BindingsInterceptor.doMethodInterception(Jsr299BindingsInterceptor.java:129) [jboss-as-weld-7.1.2.Final-redhat-1.jar:7.1.2.Final-redhat-1]
at org.jboss.as.weld.ejb.Jsr299BindingsInterceptor.processInvocation(Jsr299BindingsInterceptor.java:139) [jboss-as-weld-7.1.2.Final-redhat-1.jar:7.1.2.Final-redhat-1]
at org.jboss.as.ee.component.interceptors.UserInterceptorFactory$1.processInvocation(UserInterceptorFactory.java:34) [jboss-as-ee-7.1.2.Final-redhat-1.jar:7.1.2.Final-redhat-1]
at org.jboss.invocation.InterceptorContext.proceed(InterceptorContext.java:288) [jboss-invocation-1.1.1.Final-redhat-1.jar:1.1.1.Final-redhat-1]
at org.jboss.invocation.WeavedInterceptor.processInvocation(WeavedInterceptor.java:53) [jboss-invocation-1.1.1.Final-redhat-1.jar:1.1.1.Final-redhat-1]
at org.jboss.as.ee.component.interceptors.UserInterceptorFactory$1.processInvocation(UserInterceptorFactory.java:34) [jboss-as-ee-7.1.2.Final-redhat-1.jar:7.1.2.Final-redhat-1]
at org.jboss.invocation.InterceptorContext.proceed(InterceptorContext.java:288) [jboss-invocation-1.1.1.Final-redhat-1.jar:1.1.1.Final-redhat-1]
at org.jboss.as.ejb3.component.invocationmetrics.ExecutionTimeInterceptor.processInvocation(ExecutionTimeInterceptor.java:43) [jboss-as-ejb3-7.1.2.Final-redhat-1.jar:7.1.2.Final-redhat-1]
at org.jboss.invocation.InterceptorContext.proceed(InterceptorContext.java:288) [jboss-invocation-1.1.1.Final-redhat-1.jar:1.1.1.Final-redhat-1]
at org.jboss.invocation.InterceptorContext$Invocation.proceed(InterceptorContext.java:374) [jboss-invocation-1.1.1.Final-redhat-1.jar:1.1.1.Final-redhat-1]
at org.jboss.as.ejb3.concurrency.ContainerManagedConcurrencyInterceptor.processInvocation(ContainerManagedConcurrencyInterceptor.java:104) [jboss-as-ejb3-7.1.2.Final-redhat-1.jar:7.1.2.Final-r
edhat-1]
at org.jboss.invocation.InterceptorContext.proceed(InterceptorContext.java:288) [jboss-invocation-1.1.1.Final-redhat-1.jar:1.1.1.Final-redhat-1]
at org.jboss.as.weld.ejb.EjbRequestScopeActivationInterceptor.processInvocation(EjbRequestScopeActivationInterceptor.java:94) [jboss-as-weld-7.1.2.Final-redhat-1.jar:7.1.2.Final-redhat-1]
at org.jboss.invocation.InterceptorContext.proceed(InterceptorContext.java:288) [jboss-invocation-1.1.1.Final-redhat-1.jar:1.1.1.Final-redhat-1]
at org.jboss.invocation.InitialInterceptor.processInvocation(InitialInterceptor.java:21) [jboss-invocation-1.1.1.Final-redhat-1.jar:1.1.1.Final-redhat-1]
at org.jboss.invocation.InterceptorContext.proceed(InterceptorContext.java:288) [jboss-invocation-1.1.1.Final-redhat-1.jar:1.1.1.Final-redhat-1]
at org.jboss.invocation.ChainedInterceptor.processInvocation(ChainedInterceptor.java:61) [jboss-invocation-1.1.1.Final-redhat-1.jar:1.1.1.Final-redhat-1]
at org.jboss.as.ee.component.interceptors.ComponentDispatcherInterceptor.processInvocation(ComponentDispatcherInterceptor.java:53) [jboss-as-ee-7.1.2.Final-redhat-1.jar:7.1.2.Final-redhat-1]
at org.jboss.invocation.InterceptorContext.proceed(InterceptorContext.java:288) [jboss-invocation-1.1.1.Final-redhat-1.jar:1.1.1.Final-redhat-1]
at org.jboss.as.ejb3.component.singleton.SingletonComponentInstanceAssociationInterceptor.processInvocation(SingletonComponentInstanceAssociationInterceptor.java:53) [jboss-as-ejb3-7.1.2.Final
-redhat-1.jar:7.1.2.Final-redhat-1]
at org.jboss.invocation.InterceptorContext.proceed(InterceptorContext.java:288) [jboss-invocation-1.1.1.Final-redhat-1.jar:1.1.1.Final-redhat-1]
at org.jboss.as.ejb3.tx.CMTTxInterceptor.invokeInOurTx(CMTTxInterceptor.java:227) [jboss-as-ejb3-7.1.2.Final-redhat-1.jar:7.1.2.Final-redhat-1]