Failed to inject EJB 3 using @EJB on jboss 7
Question
I am trying to use @EJB annotation to call a stateless bean. When I print the value of the reference, it is NULL I a'm running on jboss 7. Please help me I have traied all possipole configruation, If I missed any thing please notify me. find the full stack below
Jboss log:-
JBAS015876: Starting deployment of "medmark.war" 17:33:56,948 INFO [org.jboss.as.ejb3.deployment.processors.EjbJndiBindingsDeploymentUnitProcessor] (MSC service thread 1-8) JNDI bindings for session bean named HelloService in deployment unit deployment "medmark.war" are as follows:
java:global/medmark/HelloService!com.ntgclarity.medmark.service.HelloService
java:app/medmark/HelloService!com.ntgclarity.medmark.service.HelloService
java:module/HelloService!com.ntgclarity.medmark.service.HelloService
java:global/medmark/HelloService
java:app/medmark/HelloService
java:module/HelloService
17:33:57,374 INFO [org.jboss.as.connector.deployers.jdbc] (MSC service thread 1-4) JBAS010404: Deploying non-JDBC-compliant driver class com.mysql.jdbc.Driver (version 5.1)
17:33:57,388 INFO [org.jboss.as.connector.deployers.jdbc] (MSC service thread 1-4) JBAS010404: Deploying non-JDBC-compliant driver class com.mysql.fabric.jdbc.FabricMySQLDriver (version 5.1)
17:33:57,580 INFO [javax.enterprise.resource.webcontainer.jsf.config] (MSC service thread 1-6) Initializing Mojarra 2.1.7-jbossorg-1 (20120227-1401) for context '/medmark'
17:33:58,651 INFO [org.hibernate.validator.util.Version] (MSC service thread 1-6) Hibernate Validator 4.2.0.Final
17:33:59,582 INFO [org.primefaces.webapp.PostConstructApplicationEventListener] (MSC service thread 1-6) Running on PrimeFaces 5.0
17:33:59,627 INFO [org.jboss.web] (MSC service thread 1-6) JBAS018210: Registering web context: /medmark
17:33:59,644 INFO [org.jboss.as] (MSC service thread 1-7) JBAS015951: Admin console listening on http://0.0.0.0:9990
17:33:59,652 INFO [org.jboss.as] (MSC service thread 1-7) JBAS015874: JBoss AS 7.1.1.Final "Brontes" started in 8464ms - Started 349 of 476 services (126 services are passive or on-demand)
17:33:59,953 INFO [org.jboss.as.server] (DeploymentScanner-threads - 2) JBAS018559: Deployed "medmark.war"
17:34:01,423 SEVERE [javax.enterprise.resource.webcontainer.jsf.application] (http-localhost-127.0.0.1-8080-1) Error Rendering View[/portal/login.xhtml]: com.sun.faces.mgbean.ManagedBeanCreationException: Cant instantiate class: com.ntgclarity.medmark.managedbean.HelloBean.
at com.sun.faces.mgbean.BeanBuilder.newBeanInstance(BeanBuilder.java:193) [jsf-impl-2.1.7-jbossorg-2.jar:]
at com.sun.faces.mgbean.BeanBuilder.build(BeanBuilder.java:102) [jsf-impl-2.1.7-jbossorg-2.jar:]
at com.sun.faces.mgbean.BeanManager.createAndPush(BeanManager.java:409) [jsf-impl-2.1.7-jbossorg-2.jar:]
at com.sun.faces.mgbean.BeanManager.create(BeanManager.java:269) [jsf-impl-2.1.7-jbossorg-2.jar:]
at com.sun.faces.el.ManagedBeanELResolver.resolveBean(ManagedBeanELResolver.java:244) [jsf-impl-2.1.7-jbossorg-2.jar:]
at com.sun.faces.el.ManagedBeanELResolver.getValue(ManagedBeanELResolver.java:116) [jsf-impl-2.1.7-jbossorg-2.jar:]
at com.sun.faces.el.DemuxCompositeELResolver._getValue(DemuxCompositeELResolver.java:176) [jsf-impl-2.1.7-jbossorg-2.jar:]
at com.sun.faces.el.DemuxCompositeELResolver.getValue(DemuxCompositeELResolver.java:203) [jsf-impl-2.1.7-jbossorg-2.jar:]
at org.apache.el.parser.AstIdentifier.getValue(AstIdentifier.java:72) [jbossweb-7.0.13.Final.jar:]
at org.apache.el.parser.AstValue.getValue(AstValue.java:147) [jbossweb-7.0.13.Final.jar:]
at org.apache.el.ValueExpressionImpl.getValue(ValueExpressionImpl.java:189) [jbossweb-7.0.13.Final.jar:]
at com.sun.faces.facelets.el.TagValueExpression.getValue(TagValueExpression.java:109) [jsf-impl-2.1.7-jbossorg-2.jar:]
at javax.faces.component.ComponentStateHelper.eval(ComponentStateHelper.java:194) [jboss-jsf-api_2.1_spec-2.0.1.Final.jar:2.0.1.Final]
at javax.faces.component.ComponentStateHelper.eval(ComponentStateHelper.java:182) [jboss-jsf-api_2.1_spec-2.0.1.Final.jar:2.0.1.Final]
at javax.faces.component.UIOutput.getValue(UIOutput.java:169) [jboss-jsf-api_2.1_spec-2.0.1.Final.jar:2.0.1.Final]
at org.primefaces.util.ComponentUtils.getValueToRender(ComponentUtils.java:75) [primefaces-5.0.jar:5.0]
at org.primefaces.component.inputtext.InputTextRenderer.encodeMarkup(InputTextRenderer.java:71) [primefaces-5.0.jar:5.0]
at org.primefaces.component.inputtext.InputTextRenderer.encodeEnd(InputTextRenderer.java:52) [primefaces-5.0.jar:5.0]
at javax.faces.component.UIComponentBase.encodeEnd(UIComponentBase.java:875) [jboss-jsf-api_2.1_spec-2.0.1.Final.jar:2.0.1.Final]
at javax.faces.component.UIComponent.encodeAll(UIComponent.java:1786) [jboss-jsf-api_2.1_spec-2.0.1.Final.jar:2.0.1.Final]
at javax.faces.component.UIComponent.encodeAll(UIComponent.java:1782) [jboss-jsf-api_2.1_spec-2.0.1.Final.jar:2.0.1.Final]
at com.sun.faces.application.view.FaceletViewHandlingStrategy.renderView(FaceletViewHandlingStrategy.java:402) [jsf-impl-2.1.7-jbossorg-2.jar:]
at com.sun.faces.application.view.MultiViewHandler.renderView(MultiViewHandler.java:125) [jsf-impl-2.1.7-jbossorg-2.jar:]
at com.sun.faces.lifecycle.RenderResponsePhase.execute(RenderResponsePhase.java:121) [jsf-impl-2.1.7-jbossorg-2.jar:]
at com.sun.faces.lifecycle.Phase.doPhase(Phase.java:101) [jsf-impl-2.1.7-jbossorg-2.jar:]
at com.sun.faces.lifecycle.LifecycleImpl.render(LifecycleImpl.java:139) [jsf-impl-2.1.7-jbossorg-2.jar:]
at javax.faces.webapp.FacesServlet.service(FacesServlet.java:594) [jboss-jsf-api_2.1_spec-2.0.1.Final.jar:2.0.1.Final]
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:329) [jbossweb-7.0.13.Final.jar:]
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:248) [jbossweb-7.0.13.Final.jar:]
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:275) [jbossweb-7.0.13.Final.jar:]
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:161) [jbossweb-7.0.13.Final.jar:]
at org.jboss.modcluster.container.jbossweb.JBossWebContext$RequestListenerValve.event(JBossWebContext.java:67)
at org.jboss.modcluster.container.jbossweb.JBossWebContext$RequestListenerValve.invoke(JBossWebContext.java:48)
at org.jboss.as.web.security.SecurityContextAssociationValve.invoke(SecurityContextAssociationValve.java:153) [jboss-as-web-7.1.1.Final.jar:7.1.1.Final]
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:155) [jbossweb-7.0.13.Final.jar:]
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102) [jbossweb-7.0.13.Final.jar:]
at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:567) [jbossweb-7.0.13.Final.jar:]
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109) [jbossweb-7.0.13.Final.jar:]
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:368) [jbossweb-7.0.13.Final.jar:]
at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:877) [jbossweb-7.0.13.Final.jar:]
at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:671) [jbossweb-7.0.13.Final.jar:]
at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:930) [jbossweb-7.0.13.Final.jar:]
at java.lang.Thread.run(Thread.java:662) [rt.jar:1.6.0_45]
Caused by: java.lang.NullPointerException
at com.ntgclarity.medmark.managedbean.HelloBean.<init>(HelloBean.java:59) [classes:]
at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method) [rt.jar:1.6.0_45]
at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:39) [rt.jar:1.6.0_45]
at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:27) [rt.jar:1.6.0_45]
at java.lang.reflect.Constructor.newInstance(Constructor.java:513) [rt.jar:1.6.0_45]
at java.lang.Class.newInstance0(Class.java:357) [rt.jar:1.6.0_45]
at java.lang.Class.newInstance(Class.java:310) [rt.jar:1.6.0_45]
at com.sun.faces.mgbean.BeanBuilder.newBeanInstance(BeanBuilder.java:188) [jsf-impl-2.1.7-jbossorg-2.jar:]
... 42 more
17:34:01,781 ERROR [org.apache.catalina.core.ContainerBase.[jboss.web].[default-host].[/medmark].[facesServlet]] (http-localhost-127.0.0.1-8080-1) Servlet.service() for servlet facesServlet threw exception: java.lang.NullPointerException
at com.ntgclarity.medmark.managedbean.HelloBean.<init>(HelloBean.java:59) [classes:]
at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method) [rt.jar:1.6.0_45]
at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:39) [rt.jar:1.6.0_45]
at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:27) [rt.jar:1.6.0_45]
at java.lang.reflect.Constructor.newInstance(Constructor.java:513) [rt.jar:1.6.0_45]
at java.lang.Class.newInstance0(Class.java:357) [rt.jar:1.6.0_45]
at java.lang.Class.newInstance(Class.java:310) [rt.jar:1.6.0_45]
at com.sun.faces.mgbean.BeanBuilder.newBeanInstance(BeanBuilder.java:188) [jsf-impl-2.1.7-jbossorg-2.jar:]
at com.sun.faces.mgbean.BeanBuilder.build(BeanBuilder.java:102) [jsf-impl-2.1.7-jbossorg-2.jar:]
at com.sun.faces.mgbean.BeanManager.createAndPush(BeanManager.java:409) [jsf-impl-2.1.7-jbossorg-2.jar:]
at com.sun.faces.mgbean.BeanManager.create(BeanManager.java:269) [jsf-impl-2.1.7-jbossorg-2.jar:]
at com.sun.faces.el.ManagedBeanELResolver.resolveBean(ManagedBeanELResolver.java:244) [jsf-impl-2.1.7-jbossorg-2.jar:]
at com.sun.faces.el.ManagedBeanELResolver.getValue(ManagedBeanELResolver.java:116) [jsf-impl-2.1.7-jbossorg-2.jar:]
at com.sun.faces.el.DemuxCompositeELResolver._getValue(DemuxCompositeELResolver.java:176) [jsf-impl-2.1.7-jbossorg-2.jar:]
at com.sun.faces.el.DemuxCompositeELResolver.getValue(DemuxCompositeELResolver.java:203) [jsf-impl-2.1.7-jbossorg-2.jar:]
at org.apache.el.parser.AstIdentifier.getValue(AstIdentifier.java:72) [jbossweb-7.0.13.Final.jar:]
at org.apache.el.parser.AstValue.getValue(AstValue.java:147) [jbossweb-7.0.13.Final.jar:]
at org.apache.el.ValueExpressionImpl.getValue(ValueExpressionImpl.java:189) [jbossweb-7.0.13.Final.jar:]
at com.sun.faces.facelets.el.TagValueExpression.getValue(TagValueExpression.java:109) [jsf-impl-2.1.7-jbossorg-2.jar:]
at javax.faces.component.ComponentStateHelper.eval(ComponentStateHelper.java:194) [jboss-jsf-api_2.1_spec-2.0.1.Final.jar:2.0.1.Final]
at javax.faces.component.ComponentStateHelper.eval(ComponentStateHelper.java:182) [jboss-jsf-api_2.1_spec-2.0.1.Final.jar:2.0.1.Final]
at javax.faces.component.UIOutput.getValue(UIOutput.java:169) [jboss-jsf-api_2.1_spec-2.0.1.Final.jar:2.0.1.Final]
at org.primefaces.util.ComponentUtils.getValueToRender(ComponentUtils.java:75) [primefaces-5.0.jar:5.0]
at org.primefaces.component.inputtext.InputTextRenderer.encodeMarkup(InputTextRenderer.java:71) [primefaces-5.0.jar:5.0]
at org.primefaces.component.inputtext.InputTextRenderer.encodeEnd(InputTextRenderer.java:52) [primefaces-5.0.jar:5.0]
at javax.faces.component.UIComponentBase.encodeEnd(UIComponentBase.java:875) [jboss-jsf-api_2.1_spec-2.0.1.Final.jar:2.0.1.Final]
at javax.faces.component.UIComponent.encodeAll(UIComponent.java:1786) [jboss-jsf-api_2.1_spec-2.0.1.Final.jar:2.0.1.Final]
at javax.faces.component.UIComponent.encodeAll(UIComponent.java:1782) [jboss-jsf-api_2.1_spec-2.0.1.Final.jar:2.0.1.Final]
at com.sun.faces.application.view.FaceletViewHandlingStrategy.renderView(FaceletViewHandlingStrategy.java:402) [jsf-impl-2.1.7-jbossorg-2.jar:]
at com.sun.faces.application.view.MultiViewHandler.renderView(MultiViewHandler.java:125) [jsf-impl-2.1.7-jbossorg-2.jar:]
at com.sun.faces.lifecycle.RenderResponsePhase.execute(RenderResponsePhase.java:121) [jsf-impl-2.1.7-jbossorg-2.jar:]
at com.sun.faces.lifecycle.Phase.doPhase(Phase.java:101) [jsf-impl-2.1.7-jbossorg-2.jar:]
at com.sun.faces.lifecycle.LifecycleImpl.render(LifecycleImpl.java:139) [jsf-impl-2.1.7-jbossorg-2.jar:]
at javax.faces.webapp.FacesServlet.service(FacesServlet.java:594) [jboss-jsf-api_2.1_spec-2.0.1.Final.jar:2.0.1.Final]
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:329) [jbossweb-7.0.13.Final.jar:]
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:248) [jbossweb-7.0.13.Final.jar:]
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:275) [jbossweb-7.0.13.Final.jar:]
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:161) [jbossweb-7.0.13.Final.jar:]
at org.jboss.modcluster.container.jbossweb.JBossWebContext$RequestListenerValve.event(JBossWebContext.java:67)
at org.jboss.modcluster.container.jbossweb.JBossWebContext$RequestListenerValve.invoke(JBossWebContext.java:48)
at org.jboss.as.web.security.SecurityContextAssociationValve.invoke(SecurityContextAssociationValve.java:153) [jboss-as-web-7.1.1.Final.jar:7.1.1.Final]
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:155) [jbossweb-7.0.13.Final.jar:]
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102) [jbossweb-7.0.13.Final.jar:]
at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:567) [jbossweb-7.0.13.Final.jar:]
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109) [jbossweb-7.0.13.Final.jar:]
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:368) [jbossweb-7.0.13.Final.jar:]
at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:877) [jbossweb-7.0.13.Final.jar:]
at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:671) [jbossweb-7.0.13.Final.jar:]
at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:930) [jbossweb-7.0.13.Final.jar:]
at java.lang.Thread.run(Thread.java:662) [rt.jar:1.6.0_45]
pom.xml
<properties>
<!-- API Versions -->
<java-version>1.6</java-version>
<!-- Settings -->
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
<org.springframework-version>4.0.5.RELEASE</org.springframework-version>
<org.spring.security-version>3.1.4.RELEASE</org.spring.security-version>
<com.sun.faces>2.2.4</com.sun.faces>
<primefaces.version>5.0</primefaces.version>
</properties>
<repositories>
<!--PRIMEFACES REPOSITORY -->
<repository>
<id>prime-repo</id>
<name>Prime Repo</name>
<url>http://repository.primefaces.org</url>
</repository>
</repositories>
<dependencies>
<dependency>
<groupId>junit</groupId>
<artifactId>junit</artifactId>
<version>3.8.1</version>
<scope>test</scope>
</dependency>
<!-- MySQL CONNECTOR -->
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
<version>5.1.31</version>
</dependency>
<!-- JAVA SERVER FACES JSF API -->
<dependency>
<groupId>com.sun.faces</groupId>
<artifactId>jsf-api</artifactId>
<version>${com.sun.faces}</version>
<scope>provided</scope>
</dependency>
<!-- JAVA SERVER FACES JSF Imp -->
<dependency>
<groupId>com.sun.faces</groupId>
<artifactId>jsf-impl</artifactId>
<version>${com.sun.faces}</version>
<scope>provided</scope>
</dependency>
<!-- JAVA JSTL -->
<dependency>
<groupId>javax.servlet</groupId>
<artifactId>jstl</artifactId>
<version>1.2</version>
</dependency>
<!-- JAVA SERVLET -->
<dependency>
<groupId>javax.servlet</groupId>
<artifactId>servlet-api</artifactId>
<version>2.5</version>
</dependency>
<!-- PRIMEFACES 5 -->
<dependency>
<groupId>org.primefaces</groupId>
<artifactId>primefaces</artifactId>
<version>${primefaces.version}</version>
</dependency>
<dependency>
<groupId>javax</groupId>
<artifactId>javaee-api</artifactId>
<version>6.0</version>
<scope>provided</scope>
</dependency>
</dependencies>
<build>
<finalName>medmark</finalName>
<plugins>
<plugin>
<artifactId>maven-compiler-plugin</artifactId>
<configuration>
<source>${java-version}</source>
<target>${java-version}</target>
</configuration>
</plugin>
</plugins>
</build>
EJB class:
@Stateless
public class HelloService{
public HelloService(){
}
public String sayHello() {
return "Hello EJB";
}
}
JSF bean:
@ManagedBean
@RequestScoped
public class HelloBean {
@EJB
HelloService service;
private String testString;
public HelloBean(){
testString = service.sayHello();
}
public String getTestString() {
return testString;
}
public void setTestString(String testString) {
this.testString = testString;
}
}
1 answers
solution1
1 ACCPTED 2014-07-21 15:09:44
Think about it: you are using an injected bean in the -constructor-. But the constructor is the very first thing that is ever going to be invoked so of course nothing is injected yet at that point.
Rather do it in a post construct method.
@ManagedBean
@RequestScoped
public class HelloBean {
@EJB
HelloServiceLocal service;
private String testString;
public HelloBean(){
}
@PostConstruct
public void init(){
testString = service.sayHello();
}
The technical post webpages of this site follow the CC BY-SA 4.0 protocol. If you need to reprint, please indicate the site URL or the original address.Any question please contact:yoyou2525@163.com.
Related Question
Inject logger in EJB with jboss 5
@Inject Logger (CDI) in EJB with jBoss
Using JBoss to connect EJB
Failed to start EJB3 on JBoss AS 7
Using EJB or Inject in a new thread
EJB cannot inject other EJB
Cannot inject EJB specified in applicationcontext.xml in jboss 7
Timertasks using cron expressions EJB3/JBoss 6
JBoss EJB Client using HTTP Proxy
Cache data on cluster using EJB 3.1 and jboss
Related Tags