Testing this solution on Weblogic 12c
http://weblogs.java.net/blog/jjviana/archive/2010/05/18/applicaction-configuration-java-ee-6-using-cdi-simple-example
Deployed EJB module requires beans.xml file on META-INF
Annotation Config
Configuration factory
Test Facade
Facade Remote interface
EJB client calling facade
Client requires /opt/weblogic/wlserver_12.1/server/lib/wlthint3client.jar on CLASSPATH
Loading configuration value in application class
Output in Weblogic server log
Test with plain Java class
Added call to plain class
Output in Weblogic log
Exception when config file is not found
http://weblogs.java.net/blog/jjviana/archive/2010/05/18/applicaction-configuration-java-ee-6-using-cdi-simple-example
Deployed EJB module requires beans.xml file on META-INF
<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://java.sun.com/xml/ns/javaee"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="
http://java.sun.com/xml/ns/javaee
http://java.sun.com/xml/ns/javaee/beans_1_0.xsd">
</beans>Annotation Config
package dave;
import java.lang.annotation.ElementType;
import java.lang.annotation.Retention;
import java.lang.annotation.RetentionPolicy;
import java.lang.annotation.Target;
import javax.inject.Qualifier;
@Qualifier
@Retention(RetentionPolicy.RUNTIME)
@Target({ElementType.TYPE, ElementType.METHOD, ElementType.FIELD, ElementType.PARAMETER})
public @interface Config {
}
Configuration factory
package dave;
import java.io.IOException;
import java.io.InputStream;
import java.util.Properties;
import java.util.logging.Level;
import java.util.logging.Logger;
import javax.enterprise.inject.Produces;
import javax.enterprise.inject.spi.InjectionPoint;
public class ConfigurationFactory {
private volatile static Properties configProperties;
public static final String propertiesFilePath = "/application.properties";
public synchronized static Properties getProperties() {
if (configProperties == null) {
configProperties = new Properties();
try {
InputStream is = ConfigurationFactory.class.getResourceAsStream(propertiesFilePath);
System.out.println("Found resource file" + (is != null));
configProperties.load(is);
} catch (IOException ex) {
Logger.getLogger(ConfigurationFactory.class.getName()).log(
Level.SEVERE, null, ex);
throw new RuntimeException(ex);
}
}
return configProperties;
}
public @Produces
@Config
String getConfiguration(InjectionPoint p) {
String configKey = p.getMember().getDeclaringClass().getName() + "."
+ p.getMember().getName();
Properties config = getProperties();
if (config.getProperty(configKey) == null) {
configKey = p.getMember().getDeclaringClass().getSimpleName() + "."
+ p.getMember().getName();
if (config.getProperty(configKey) == null)
configKey = p.getMember().getName();
}
System.err.println("Config key= " + configKey + " value = "
+ config.getProperty(configKey));
return config.getProperty(configKey);
}
public @Produces
@Config
Double getConfigurationDouble(InjectionPoint p) {
String val = getConfiguration(p);
return Double.parseDouble(val);
}
}Test Facade
package dave;
import javax.ejb.EJB;
import javax.ejb.Stateless;
/**
* Session Bean implementation class TestFacade
*/
@Stateless(mappedName = "TestFacade")
public class TestFacade implements TestFacadeRemote {
@EJB
TestStateless stateless;
public String getServerAddress() {
return stateless.getServerAddress();
}
}
Facade Remote interface
package dave;
import javax.ejb.Remote;
@Remote
public interface TestFacadeRemote {
public String getServerAddress();
}
EJB client calling facade
Client requires /opt/weblogic/wlserver_12.1/server/lib/wlthint3client.jar on CLASSPATH
package dave;
import java.util.Properties;
import javax.naming.Context;
import javax.naming.InitialContext;
import javax.naming.NamingException;
public class TestEJBClient {
/**
* @param args
*/
public static void main(String[] args) {
try {
Properties props = new Properties();
props.put(Context.PROVIDER_URL, "t3://localhost:7001");
props.put(Context.INITIAL_CONTEXT_FACTORY,
"weblogic.jndi.WLInitialContextFactory");
Context ctx = new InitialContext(props);
TestFacadeRemote facade = (TestFacadeRemote) ctx.lookup("TestFacade#dave.TestFacadeRemote");
System.out.println(facade.getServerAddress());
} catch (NamingException e) {
e.printStackTrace();
}
}
}
Loading configuration value in application class
package dave;
import javax.ejb.LocalBean;
import javax.ejb.Stateless;
import javax.inject.Inject;
/**
* Session Bean implementation class TestStateless
*/
@Stateless(mappedName = "TestStateless")
@LocalBean
public class TestStateless {
@Inject @Config
private String serverAddress;
public String getServerAddress() {
return serverAddress;
}
}
Output in Weblogic server log
Found resource filetrue
Config key= serverAddress value = dave
Test with plain Java class
package dave;
import javax.enterprise.context.ApplicationScoped;
import javax.inject.Inject;
@ApplicationScoped
public class TestBean {
@Inject @Config
private String serverAddress;
public String getServerAddress() {
return serverAddress;
}
}
Added call to plain class
package dave;
import javax.ejb.EJB;
import javax.ejb.Stateless;
import javax.inject.Inject;
/**
* Session Bean implementation class TestFacade
*/
@Stateless(mappedName = "TestFacade")
public class TestFacade implements TestFacadeRemote {
@EJB
TestStateless stateless;
@Inject
TestBean testBean;
public String getServerAddress() {
System.out.println("get value from testbean " + testBean.getServerAddress());
System.out.println("get value from testbean " + testBean.getServerAddress());
System.out.println("get value from stateless " + stateless.getServerAddress());
System.out.println("get value from stateless " + stateless.getServerAddress());
return stateless.getServerAddress();
}
}
Output in Weblogic log
Found resource filetrue
Config key= serverAddress value = dave
get value from testbean dave
get value from testbean dave
Config key= serverAddress value = dave
get value from stateless dave
get value from stateless dave
Exception when config file is not found
Exception in thread "main" javax.ejb.EJBTransactionRolledbackException: EJB Exception:
at weblogic.ejb.container.internal.BaseLocalObject.handleSystemException(BaseLocalObject.java:453)
at weblogic.ejb.container.internal.BaseLocalObject.getBeanInstance(BaseLocalObject.java:166)
at weblogic.ejb.container.internal.BaseLocalObject.preInvoke(BaseLocalObject.java:103)
at weblogic.ejb.container.internal.BaseLocalObject.__WL_preInvoke(BaseLocalObject.java:67)
at weblogic.ejb.container.internal.SessionLocalMethodInvoker.invoke(SessionLocalMethodInvoker.java:20)
at dave.TestStateless_954dmo_NoIntfViewImpl.getServerAddress(Unknown Source)
at dave.TestFacade.getServerAddress(TestFacade.java:16)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:597)
at com.bea.core.repackaged.springframework.aop.support.AopUtils.invokeJoinpointUsingReflection(AopUtils.java:310)
at com.bea.core.repackaged.springframework.aop.framework.ReflectiveMethodInvocation.invokeJoinpoint(ReflectiveMethodInvocation.java:182)
at com.bea.core.repackaged.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:149)
at com.oracle.pitchfork.intercept.MethodInvocationInvocationContext.proceed(MethodInvocationInvocationContext.java:103)
at org.jboss.weld.ejb.SessionBeanInterceptor.aroundInvoke(SessionBeanInterceptor.java:49)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:597)
at com.oracle.pitchfork.intercept.JeeInterceptorInterceptor.invoke(JeeInterceptorInterceptor.java:108)
at com.bea.core.repackaged.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:171)
at com.bea.core.repackaged.springframework.aop.support.DelegatingIntroductionInterceptor.doProceed(DelegatingIntroductionInterceptor.java:131)
at com.bea.core.repackaged.springframework.aop.support.DelegatingIntroductionInterceptor.invoke(DelegatingIntroductionInterceptor.java:119)
at com.bea.core.repackaged.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:171)
at com.bea.core.repackaged.springframework.aop.framework.JdkDynamicAopProxy.invoke(Unknown Source)
at $Proxy111.getServerAddress(Unknown Source)
at dave.TestFacade_23kp48_TestFacadeRemoteImpl.__WL_invoke(Unknown Source)
at weblogic.ejb.container.internal.SessionRemoteMethodInvoker.invoke(SessionRemoteMethodInvoker.java:32)
at dave.TestFacade_23kp48_TestFacadeRemoteImpl.getServerAddress(Unknown Source)
at dave.TestFacade_23kp48_TestFacadeRemoteImpl_WLSkel.invoke(Unknown Source)
at weblogic.rmi.internal.BasicServerRef.invoke(BasicServerRef.java:695)
at weblogic.rmi.cluster.ClusterableServerRef.invoke(ClusterableServerRef.java:230)
at weblogic.rmi.internal.BasicServerRef$1.run(BasicServerRef.java:520)
at weblogic.security.acl.internal.AuthenticatedSubject.doAs(AuthenticatedSubject.java:363)
at weblogic.security.service.SecurityManager.runAs(SecurityManager.java:146)
at weblogic.rmi.internal.BasicServerRef.handleRequest(BasicServerRef.java:516)
at weblogic.rmi.internal.wls.WLSExecuteRequest.run(WLSExecuteRequest.java:118)
at weblogic.work.ExecuteThread.execute(ExecuteThread.java:256)
at weblogic.work.ExecuteThread.run(ExecuteThread.java:221)
Caused by: java.lang.NullPointerException
at java.util.Properties$LineReader.readLine(Properties.java:418)
at java.util.Properties.load0(Properties.java:337)
at java.util.Properties.load(Properties.java:325)
at dave.ConfigurationFactory.getProperties(ConfigurationFactory.java:22)
at dave.ConfigurationFactory.getConfiguration(ConfigurationFactory.java:40)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:597)
at org.jboss.weld.util.reflection.SecureReflections$13.work(SecureReflections.java:264)
at org.jboss.weld.util.reflection.SecureReflectionAccess.run(SecureReflectionAccess.java:52)
at org.jboss.weld.util.reflection.SecureReflectionAccess.runAsInvocation(SecureReflectionAccess.java:137)
at org.jboss.weld.util.reflection.SecureReflections.invoke(SecureReflections.java:260)
at org.jboss.weld.introspector.jlr.WeldMethodImpl.invokeOnInstance(WeldMethodImpl.java:170)
at org.jboss.weld.injection.MethodInjectionPoint.invokeOnInstance(MethodInjectionPoint.java:137)
at org.jboss.weld.bean.ProducerMethod$1.produce(ProducerMethod.java:132)
at org.jboss.weld.bean.AbstractProducerBean.create(AbstractProducerBean.java:299)
at org.jboss.weld.context.unbound.DependentContextImpl.get(DependentContextImpl.java:61)
at org.jboss.weld.manager.BeanManagerImpl.getReference(BeanManagerImpl.java:630)
at org.jboss.weld.manager.BeanManagerImpl.getReference(BeanManagerImpl.java:691)
at org.jboss.weld.injection.FieldInjectionPoint.inject(FieldInjectionPoint.java:118)
at org.jboss.weld.util.Beans.injectBoundFields(Beans.java:691)
at org.jboss.weld.util.Beans.injectFieldsAndInitializers(Beans.java:700)
at org.jboss.weld.bean.SessionBean$1$1.proceed(SessionBean.java:175)
at com.oracle.injection.provider.weld.WeldInjectionServicesAdapter.aroundInject(WeldInjectionServicesAdapter.java:88)
at org.jboss.weld.injection.InjectionContextImpl.run(InjectionContextImpl.java:45)
at org.jboss.weld.bean.SessionBean$1.inject(SessionBean.java:172)
at com.oracle.injection.provider.weld.WeldEjbBeanManager$ExtendedInjectionTarget.inject(WeldEjbBeanManager.java:119)
at com.oracle.injection.provider.weld.WeldEjbBeanManager.newBeanInstance(WeldEjbBeanManager.java:82)
at weblogic.ejb.container.injection.InjectionBasedEjbComponentCreator.getBean(InjectionBasedEjbComponentCreator.java:75)
at weblogic.ejb.container.manager.BaseEJBManager.createNewBeanInstance(BaseEJBManager.java:209)
at weblogic.ejb.container.manager.BaseEJBManager.allocateBean(BaseEJBManager.java:235)
at weblogic.ejb.container.manager.StatelessManager.createBean(StatelessManager.java:293)
at weblogic.ejb.container.pool.StatelessSessionPool.createBean(StatelessSessionPool.java:185)
at weblogic.ejb.container.pool.StatelessSessionPool.getBean(StatelessSessionPool.java:114)
at weblogic.ejb.container.manager.StatelessManager.preInvoke(StatelessManager.java:174)
at weblogic.ejb.container.internal.BaseLocalObject.getBeanInstance(BaseLocalObject.java:146)
... 38 more
