I am very new to JavaEE. I've lookup a lot of questions about NullPinterException with EJB injection in this site and others, but have no success yet. I can't find the solution for my problem.
I created DynamicWebProject in Eclipse with JPA, JAX-RS, Glassfish Web Extensions facets.
Here is the sctructure of my project (web.xml file is under the glassfish-web.xml file):
I try to call getemployees webservice which deployed to localhost Glassfish server and try to get information about all employees from my database (also at localhost).
Here is the code of my GetEmployees class.
package bean;
import javax.faces.bean.ApplicationScoped;
import javax.faces.bean.ManagedBean;
import javax.inject.Inject;
import javax.ws.rs.GET;
import javax.ws.rs.Path;
import javax.ws.rs.Produces;
import javax.ws.rs.core.Response;
import com.google.gson.Gson;
import ejb.EmployeeEJB;
#ApplicationScoped
#ManagedBean
#Path("/getemployees")
public class GetEmployees {
#Inject
EmployeeEJB employeeEJB;
#GET
#Produces("application/json; charset=utf-8")
public Response getAllEmployees() throws Exception {
Gson gson = new Gson();
String jsonString = null;
try {
jsonString = gson.toJson(employeeEJB.getAll());
} catch (Exception e) {
e.printStackTrace();
}
return Response.status(200).entity(jsonString).build();
}
}
I created Managed and Session beans. I made Managed bean from my GetEmployees RESTful webservice class. Is it correct?
EmployeeEJB is the session bean:
package ejb;
import java.util.List;
import javax.ejb.LocalBean;
import javax.ejb.Stateless;
import javax.persistence.EntityManager;
import javax.persistence.PersistenceContext;
import javax.persistence.Query;
import entity.Employee;
#LocalBean
#Stateless
public class EmployeeEJB {
#PersistenceContext
EntityManager em;
public void saveEmployee(Employee employee) {
em.merge(employee);
}
public void deleteEmployee(Employee employee) {
em.remove(employee);
}
public List<Employee> getAll() {
Query query = em.createQuery("SELECT emp FROM Employee emp", Employee.class);
List<Employee> emp = (List<Employee>) query.getResultList();
return emp;
}
}
Here is my persistence.xml file. JDBC connection pool and JDBC resource created in Glassfish admin console. Connection to database is Ok.
<?xml version="1.0" encoding="UTF-8"?>
<persistence version="2.1" xmlns="http://xmlns.jcp.org/xml/ns/persistence"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/persistence http://xmlns.jcp.org/xml/ns/persistence/persistence_2_1.xsd">
<persistence-unit name="FirstDynamicWebProject">
<provider>org.eclipse.persistence.jpa.PersistenceProvider</provider>
<jta-data-source>jdbc/second_attempt_hibernate</jta-data-source>
<class>entity.Docstatus</class>
<class>entity.Doctype</class>
<class>entity.Document</class>
<class>entity.Employee</class>
<class>entity.Mailorder</class>
<class>entity.Mailorderstatus</class>
</persistence-unit>
</persistence>
NullPointerException occur when I try to call an employeeEJB.getAll() method in GetEmployees class:
2017-04-10T00:59:07.063+0500|Severe: java.lang.NullPointerException
at bean.GetEmployees.getAllEmployees(GetEmployees.java:28)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at com.sun.jersey.spi.container.JavaMethodInvokerFactory$1.invoke(JavaMethodInvokerFactory.java:60)
at com.sun.jersey.server.impl.model.method.dispatch.AbstractResourceMethodDispatchProvider$TypeOutInvoker._dispatch(AbstractResourceMethodDispatchProvider.java:185)
at com.sun.jersey.server.impl.model.method.dispatch.ResourceJavaMethodDispatcher.dispatch(ResourceJavaMethodDispatcher.java:75)
at com.sun.jersey.server.impl.uri.rules.HttpMethodRule.accept(HttpMethodRule.java:302)
at com.sun.jersey.server.impl.uri.rules.ResourceClassRule.accept(ResourceClassRule.java:108)
at com.sun.jersey.server.impl.uri.rules.RightHandPathRule.accept(RightHandPathRule.java:147)
at com.sun.jersey.server.impl.uri.rules.RootResourceClassesRule.accept(RootResourceClassesRule.java:84)
at com.sun.jersey.server.impl.application.WebApplicationImpl._handleRequest(WebApplicationImpl.java:1542)
at com.sun.jersey.server.impl.application.WebApplicationImpl._handleRequest(WebApplicationImpl.java:1473)
at com.sun.jersey.server.impl.application.WebApplicationImpl.handleRequest(WebApplicationImpl.java:1419)
at com.sun.jersey.server.impl.application.WebApplicationImpl.handleRequest(WebApplicationImpl.java:1409)
at com.sun.jersey.spi.container.servlet.WebComponent.service(WebComponent.java:409)
at com.sun.jersey.spi.container.servlet.ServletContainer.service(ServletContainer.java:558)
at com.sun.jersey.spi.container.servlet.ServletContainer.service(ServletContainer.java:733)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:790)
at org.apache.catalina.core.StandardWrapper.service(StandardWrapper.java:1682)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:318)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:160)
at org.apache.catalina.core.StandardPipeline.doInvoke(StandardPipeline.java:734)
at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:673)
at com.sun.enterprise.web.WebPipeline.invoke(WebPipeline.java:99)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:174)
at org.apache.catalina.connector.CoyoteAdapter.doService(CoyoteAdapter.java:416)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:283)
at com.sun.enterprise.v3.services.impl.ContainerMapper$HttpHandlerCallable.call(ContainerMapper.java:459)
at com.sun.enterprise.v3.services.impl.ContainerMapper.service(ContainerMapper.java:167)
at org.glassfish.grizzly.http.server.HttpHandler.runService(HttpHandler.java:206)
at org.glassfish.grizzly.http.server.HttpHandler.doHandle(HttpHandler.java:180)
at org.glassfish.grizzly.http.server.HttpServerFilter.handleRead(HttpServerFilter.java:235)
at org.glassfish.grizzly.filterchain.ExecutorResolver$9.execute(ExecutorResolver.java:119)
at org.glassfish.grizzly.filterchain.DefaultFilterChain.executeFilter(DefaultFilterChain.java:283)
at org.glassfish.grizzly.filterchain.DefaultFilterChain.executeChainPart(DefaultFilterChain.java:200)
at org.glassfish.grizzly.filterchain.DefaultFilterChain.execute(DefaultFilterChain.java:132)
at org.glassfish.grizzly.filterchain.DefaultFilterChain.process(DefaultFilterChain.java:111)
at org.glassfish.grizzly.ProcessorExecutor.execute(ProcessorExecutor.java:77)
at org.glassfish.grizzly.nio.transport.TCPNIOTransport.fireIOEvent(TCPNIOTransport.java:536)
at org.glassfish.grizzly.strategies.AbstractIOStrategy.fireIOEvent(AbstractIOStrategy.java:112)
at org.glassfish.grizzly.strategies.WorkerThreadIOStrategy.run0(WorkerThreadIOStrategy.java:117)
at org.glassfish.grizzly.strategies.WorkerThreadIOStrategy.access$100(WorkerThreadIOStrategy.java:56)
at org.glassfish.grizzly.strategies.WorkerThreadIOStrategy$WorkerThreadRunnable.run(WorkerThreadIOStrategy.java:137)
at org.glassfish.grizzly.threadpool.AbstractThreadPool$Worker.doWork(AbstractThreadPool.java:591)
at org.glassfish.grizzly.threadpool.AbstractThreadPool$Worker.run(AbstractThreadPool.java:571)
at java.lang.Thread.run(Thread.java:745)
I think the injection of EmployeeEJB is not correct, but have no ideas how to win it.
I guess the problem is that you are using the wrong package for #ApplicationScoped. And you don't need the #ManagedBean there I think.
You are using:
import javax.faces.bean.ApplicationScoped;
Try the following:
import javax.enterprise.context.ApplicationScoped;
See also:
Why are there different bean management annotations
Related
So, i'm doing a project in JAVA EE, with JPA (Glassfish Server 4.1.2).
But got this error when I'm doing persist with my Facade :
Caused by: java.lang.IllegalArgumentException: Object: be.isl.prj.story.entity.Universe#3b28b3d6 is not a known Entity type.
And here my files :
Controller (IndexBean) :
package be.usl.prj.story.controller;
import be.isl.prj.story.dao.UniverseFacade;
import be.isl.prj.story.entity.Universe;
import java.io.Serializable;
import java.util.ArrayList;
import javax.annotation.PostConstruct;
import javax.faces.bean.ManagedBean;
import javax.faces.bean.RequestScoped;
import javax.inject.Inject;
/**
* IndexController
*/
#ManagedBean
#RequestScoped
public class IndexBean implements Serializable{
ArrayList<String> list = new ArrayList<String>();
private String test;
#Inject
private UniverseFacade universeFacade;
#PostConstruct
private void init(){
}
public IndexBean() {
}
public void doTest(){
Universe universe = new Universe("YEAH", "REallyNew gen");
/*
// this works :
EntityManagerFactory emf = Persistence.createEntityManagerFactory("StoryGeneratorPU");
EntityManager entityManager = emf.createEntityManager();
entityManager.persist(universe);
*/
this.universeFacade.create(universe);
//System.out.println(this.universeFacade.find(139).getName());
}
}
AbstractFacade :
package be.isl.prj.story.dao;
import java.util.List;
import javax.persistence.EntityManager;
import javax.persistence.EntityManagerFactory;
import javax.persistence.Persistence;
import javax.persistence.PersistenceContext;
public abstract class AbstractFacade<T> {
private Class<T> entityClass;
#PersistenceContext(unitName="StoryGeneratorPU")
protected EntityManager entityManager;
public AbstractFacade(Class<T> entityClass) {
this.entityClass = entityClass;
EntityManagerFactory emf = Persistence.createEntityManagerFactory("StoryGeneratorPU");
this.entityManager = emf.createEntityManager();
}
public void create(T entity) {
entityManager.persist(entity);
}
public void edit(T entity) {
entityManager.merge(entity);
}
public void remove(T entity) {
entityManager.remove(entityManager.merge(entity));
}
public T find(Object id) {
T object = entityManager.find(entityClass, id);
return object;
}
public List<T> findAll() {
javax.persistence.criteria.CriteriaQuery cq = entityManager.getCriteriaBuilder().createQuery();
cq.select(cq.from(entityClass));
List list = entityManager.createQuery(cq).getResultList();
return list;
}
public List<T> findRange(int[] range) {
javax.persistence.criteria.CriteriaQuery cq = entityManager.getCriteriaBuilder().createQuery();
cq.select(cq.from(entityClass));
javax.persistence.Query q = entityManager.createQuery(cq);
q.setMaxResults(range[1] - range[0] + 1);
q.setFirstResult(range[0]);
List list = q.getResultList();
return list;
}
public int count() {
javax.persistence.criteria.CriteriaQuery cq = entityManager.getCriteriaBuilder().createQuery();
javax.persistence.criteria.Root<T> rt = cq.from(entityClass);
cq.select(entityManager.getCriteriaBuilder().count(rt));
javax.persistence.Query q = entityManager.createQuery(cq);
int count = ((Long) q.getSingleResult()).intValue();
return count;
}
}
UniverseFacade :
package be.isl.prj.story.dao;
import be.isl.prj.story.entity.Universe;
import javax.ejb.Stateless;
import javax.persistence.EntityManager;
#Stateless
public class UniverseFacade extends AbstractFacade<Universe>{
public UniverseFacade() {
super(Universe.class);
}
public EntityManager getEntityManager(){
return this.entityManager;
}
}
Universe Entity :
package be.isl.prj.story.entity;
import java.io.Serializable;
import javax.persistence.Column;
import javax.persistence.Entity;
import javax.persistence.GeneratedValue;
import javax.persistence.GenerationType;
import javax.persistence.Id;
import javax.persistence.SequenceGenerator;
import javax.persistence.Table;
#Entity
#Table(name = "universe")
public class Universe implements Serializable {
#Id
#GeneratedValue(strategy=GenerationType.AUTO, generator="universe_id_seq")
#SequenceGenerator(name="universe_id_seq", sequenceName="universe_id_seq", allocationSize=1)
#Column( name = "id_universe" )
private int idUniverse;
#Column( name = "name" )
protected String name;
#Column( name = "content" )
protected String content;
// ALTER SEQUENCE universe_id_universe_seq RENAME TO universe_id_seq;
public Universe() {
}
public Universe(int idUniverse, String name, String content) {
this.setIdUniverse(idUniverse);
this.setName(name);
this.setContent(content);
}
public Universe(String name, String content) {
this.setName(name);
this.setContent(content);
}
public int getIdUniverse() {
return idUniverse;
}
public void setIdUniverse(int idUniverse) {
this.idUniverse = idUniverse;
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public String getContent() {
return content;
}
public void setContent(String content) {
this.content = content;
}
}
Persistence.xml :
<?xml version="1.0" encoding="UTF-8"?>
<persistence version="2.1" xmlns="http://xmlns.jcp.org/xml/ns/persistence" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/persistence http://xmlns.jcp.org/xml/ns/persistence/persistence_2_1.xsd">
<persistence-unit name="StoryGeneratorPU" transaction-type="JTA">
<class>be.isl.prj.story.entity.Universe</class>
<exclude-unlisted-classes>false</exclude-unlisted-classes>
<properties>
<property name="javax.persistence.schema-generation.database.action" value="create"/>
</properties>
</persistence-unit>
</persistence>
And finally the Stack trace :
javax.faces.el.EvaluationException: javax.ejb.EJBException
at javax.faces.component.MethodBindingMethodExpressionAdapter.invoke(MethodBindingMethodExpressionAdapter.java:101)
at com.sun.faces.application.ActionListenerImpl.processAction(ActionListenerImpl.java:102)
at javax.faces.component.UICommand.broadcast(UICommand.java:315)
at javax.faces.component.UIViewRoot.broadcastEvents(UIViewRoot.java:790)
at javax.faces.component.UIViewRoot.processApplication(UIViewRoot.java:1282)
at com.sun.faces.lifecycle.InvokeApplicationPhase.execute(InvokeApplicationPhase.java:81)
at com.sun.faces.lifecycle.Phase.doPhase(Phase.java:101)
at com.sun.faces.lifecycle.LifecycleImpl.execute(LifecycleImpl.java:198)
at javax.faces.webapp.FacesServlet.service(FacesServlet.java:658)
at org.apache.catalina.core.StandardWrapper.service(StandardWrapper.java:1682)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:318)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:160)
at org.apache.catalina.core.StandardPipeline.doInvoke(StandardPipeline.java:734)
at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:673)
at com.sun.enterprise.web.WebPipeline.invoke(WebPipeline.java:99)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:174)
at org.apache.catalina.connector.CoyoteAdapter.doService(CoyoteAdapter.java:416)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:283)
at com.sun.enterprise.v3.services.impl.ContainerMapper$HttpHandlerCallable.call(ContainerMapper.java:459)
at com.sun.enterprise.v3.services.impl.ContainerMapper.service(ContainerMapper.java:167)
at org.glassfish.grizzly.http.server.HttpHandler.runService(HttpHandler.java:206)
at org.glassfish.grizzly.http.server.HttpHandler.doHandle(HttpHandler.java:180)
at org.glassfish.grizzly.http.server.HttpServerFilter.handleRead(HttpServerFilter.java:235)
at org.glassfish.grizzly.filterchain.ExecutorResolver$9.execute(ExecutorResolver.java:119)
at org.glassfish.grizzly.filterchain.DefaultFilterChain.executeFilter(DefaultFilterChain.java:283)
at org.glassfish.grizzly.filterchain.DefaultFilterChain.executeChainPart(DefaultFilterChain.java:200)
at org.glassfish.grizzly.filterchain.DefaultFilterChain.execute(DefaultFilterChain.java:132)
at org.glassfish.grizzly.filterchain.DefaultFilterChain.process(DefaultFilterChain.java:111)
at org.glassfish.grizzly.ProcessorExecutor.execute(ProcessorExecutor.java:77)
at org.glassfish.grizzly.nio.transport.TCPNIOTransport.fireIOEvent(TCPNIOTransport.java:536)
at org.glassfish.grizzly.strategies.AbstractIOStrategy.fireIOEvent(AbstractIOStrategy.java:112)
at org.glassfish.grizzly.strategies.WorkerThreadIOStrategy.run0(WorkerThreadIOStrategy.java:117)
at org.glassfish.grizzly.strategies.WorkerThreadIOStrategy.access$100(WorkerThreadIOStrategy.java:56)
at org.glassfish.grizzly.strategies.WorkerThreadIOStrategy$WorkerThreadRunnable.run(WorkerThreadIOStrategy.java:137)
at org.glassfish.grizzly.threadpool.AbstractThreadPool$Worker.doWork(AbstractThreadPool.java:591)
at org.glassfish.grizzly.threadpool.AbstractThreadPool$Worker.run(AbstractThreadPool.java:571)
at java.lang.Thread.run(Thread.java:748)
Caused by: javax.ejb.EJBException
at com.sun.ejb.containers.EJBContainerTransactionManager.processSystemException(EJBContainerTransactionManager.java:752)
at com.sun.ejb.containers.EJBContainerTransactionManager.completeNewTx(EJBContainerTransactionManager.java:702)
at com.sun.ejb.containers.EJBContainerTransactionManager.postInvokeTx(EJBContainerTransactionManager.java:507)
at com.sun.ejb.containers.BaseContainer.postInvokeTx(BaseContainer.java:4566)
at com.sun.ejb.containers.BaseContainer.postInvoke(BaseContainer.java:2074)
at com.sun.ejb.containers.BaseContainer.postInvoke(BaseContainer.java:2044)
at com.sun.ejb.containers.EJBLocalObjectInvocationHandler.invoke(EJBLocalObjectInvocationHandler.java:220)
at com.sun.ejb.containers.EJBLocalObjectInvocationHandlerDelegate.invoke(EJBLocalObjectInvocationHandlerDelegate.java:88)
at com.sun.proxy.$Proxy391.create(Unknown Source)
at be.isl.prj.story.dao.__EJB31_Generated__UniverseFacade__Intf____Bean__.create(Unknown Source)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at org.jboss.weld.util.reflection.Reflections.invokeAndUnwrap(Reflections.java:434)
at org.jboss.weld.bean.proxy.EnterpriseBeanProxyMethodHandler.invoke(EnterpriseBeanProxyMethodHandler.java:127)
at org.jboss.weld.bean.proxy.EnterpriseTargetBeanInstance.invoke(EnterpriseTargetBeanInstance.java:56)
at org.jboss.weld.bean.proxy.InjectionPointPropagatingEnterpriseTargetBeanInstance.invoke(InjectionPointPropagatingEnterpriseTargetBeanInstance.java:67)
at org.jboss.weld.bean.proxy.ProxyMethodHandler.invoke(ProxyMethodHandler.java:100)
at be.isl.prj.story.dao.UniverseFacade$Proxy$_$$_Weld$EnterpriseProxy$.create(Unknown Source)
at be.usl.prj.story.controller.IndexBean.doTest(IndexBean.java:53)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at com.sun.el.parser.AstValue.invoke(AstValue.java:289)
at com.sun.el.MethodExpressionImpl.invoke(MethodExpressionImpl.java:304)
at org.jboss.weld.util.el.ForwardingMethodExpression.invoke(ForwardingMethodExpression.java:40)
at org.jboss.weld.el.WeldMethodExpression.invoke(WeldMethodExpression.java:50)
at com.sun.faces.facelets.el.TagMethodExpression.invoke(TagMethodExpression.java:105)
at javax.faces.component.MethodBindingMethodExpressionAdapter.invoke(MethodBindingMethodExpressionAdapter.java:87)
... 36 more
Caused by: java.lang.IllegalArgumentException: Object: be.isl.prj.story.entity.Universe#3b28b3d6 is not a known Entity type.
at org.eclipse.persistence.internal.sessions.UnitOfWorkImpl.registerNewObjectForPersist(UnitOfWorkImpl.java:4226)
at org.eclipse.persistence.internal.jpa.EntityManagerImpl.persist(EntityManagerImpl.java:507)
at com.sun.enterprise.container.common.impl.EntityManagerWrapper.persist(EntityManagerWrapper.java:287)
at be.isl.prj.story.dao.AbstractFacade.create(AbstractFacade.java:25)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at org.glassfish.ejb.security.application.EJBSecurityManager.runMethod(EJBSecurityManager.java:1081)
at org.glassfish.ejb.security.application.EJBSecurityManager.invoke(EJBSecurityManager.java:1153)
at com.sun.ejb.containers.BaseContainer.invokeBeanMethod(BaseContainer.java:4786)
at com.sun.ejb.EjbInvocation.invokeBeanMethod(EjbInvocation.java:656)
at com.sun.ejb.containers.interceptors.AroundInvokeChainImpl.invokeNext(InterceptorManager.java:822)
at com.sun.ejb.EjbInvocation.proceed(EjbInvocation.java:608)
at org.jboss.weld.ejb.AbstractEJBRequestScopeActivationInterceptor.aroundInvoke(AbstractEJBRequestScopeActivationInterceptor.java:64)
at org.jboss.weld.ejb.SessionBeanInterceptor.aroundInvoke(SessionBeanInterceptor.java:52)
at sun.reflect.GeneratedMethodAccessor545.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at com.sun.ejb.containers.interceptors.AroundInvokeInterceptor.intercept(InterceptorManager.java:883)
at com.sun.ejb.containers.interceptors.AroundInvokeChainImpl.invokeNext(InterceptorManager.java:822)
at com.sun.ejb.EjbInvocation.proceed(EjbInvocation.java:608)
at com.sun.ejb.containers.interceptors.SystemInterceptorProxy.doCall(SystemInterceptorProxy.java:163)
at com.sun.ejb.containers.interceptors.SystemInterceptorProxy.aroundInvoke(SystemInterceptorProxy.java:140)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at com.sun.ejb.containers.interceptors.AroundInvokeInterceptor.intercept(InterceptorManager.java:883)
at com.sun.ejb.containers.interceptors.AroundInvokeChainImpl.invokeNext(InterceptorManager.java:822)
at com.sun.ejb.containers.interceptors.InterceptorManager.intercept(InterceptorManager.java:369)
at com.sun.ejb.containers.BaseContainer.__intercept(BaseContainer.java:4758)
at com.sun.ejb.containers.BaseContainer.intercept(BaseContainer.java:4746)
at com.sun.ejb.containers.EJBLocalObjectInvocationHandler.invoke(EJBLocalObjectInvocationHandler.java:212)
... 60 more
Thank you for your answers.
I am full beginner in JSP and Java. When I try to open a web application developed in Java, this error shows up when I try to register an account in the system. The interface of the system displayed correctly. However, everytime I try to key in some data it pops up the error.
Error Screenshot
The Netbeans had connected to Oracle database and the database is start. I have no idea what causing this, I checked the GlassFish Server Logs and still could not find out the problem. Below are the GlassFish server logs:
Warning: StandardWrapperValve[CreateServlet]: Servlet.service() for servlet CreateServlet threw exception
java.lang.NullPointerException
at g.RegisterUser.register(RegisterUser.java:14)
at g.CreateServlet.doGet(CreateServlet.java:37)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:687)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:790)
at org.apache.catalina.core.StandardWrapper.service(StandardWrapper.java:1682)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:318)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:160)
at org.apache.catalina.core.StandardPipeline.doInvoke(StandardPipeline.java:734)
at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:673)
at com.sun.enterprise.web.WebPipeline.invoke(WebPipeline.java:99)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:174)
at org.apache.catalina.connector.CoyoteAdapter.doService(CoyoteAdapter.java:416)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:283)
at com.sun.enterprise.v3.services.impl.ContainerMapper$HttpHandlerCallable.call(ContainerMapper.java:459)
at com.sun.enterprise.v3.services.impl.ContainerMapper.service(ContainerMapper.java:167)
at org.glassfish.grizzly.http.server.HttpHandler.runService(HttpHandler.java:206)
at org.glassfish.grizzly.http.server.HttpHandler.doHandle(HttpHandler.java:180)
at org.glassfish.grizzly.http.server.HttpServerFilter.handleRead(HttpServerFilter.java:235)
at org.glassfish.grizzly.filterchain.ExecutorResolver$9.execute(ExecutorResolver.java:119)
at org.glassfish.grizzly.filterchain.DefaultFilterChain.executeFilter(DefaultFilterChain.java:283)
at org.glassfish.grizzly.filterchain.DefaultFilterChain.executeChainPart(DefaultFilterChain.java:200)
at org.glassfish.grizzly.filterchain.DefaultFilterChain.execute(DefaultFilterChain.java:132)
at org.glassfish.grizzly.filterchain.DefaultFilterChain.process(DefaultFilterChain.java:111)
at org.glassfish.grizzly.ProcessorExecutor.execute(ProcessorExecutor.java:77)
at org.glassfish.grizzly.nio.transport.TCPNIOTransport.fireIOEvent(TCPNIOTransport.java:536)
at org.glassfish.grizzly.strategies.AbstractIOStrategy.fireIOEvent(AbstractIOStrategy.java:112)
at org.glassfish.grizzly.strategies.WorkerThreadIOStrategy.run0(WorkerThreadIOStrategy.java:117)
at org.glassfish.grizzly.strategies.WorkerThreadIOStrategy.access$100(WorkerThreadIOStrategy.java:56)
at org.glassfish.grizzly.strategies.WorkerThreadIOStrategy$WorkerThreadRunnable.run(WorkerThreadIOStrategy.java:137)
at org.glassfish.grizzly.threadpool.AbstractThreadPool$Worker.doWork(AbstractThreadPool.java:591)
at org.glassfish.grizzly.threadpool.AbstractThreadPool$Worker.run(AbstractThreadPool.java:571)
at java.lang.Thread.run(Thread.java:745)
The problem start at CreateServlet.java. Here are the code in CreateServlet.java
package g;
import java.io.IOException;
import java.io.PrintWriter;
import java.rmi.Naming;
import javax.servlet.RequestDispatcher;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
public class CreateServlet extends HttpServlet {
#Override
public void doGet(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
response.setContentType("text/html");
PrintWriter out=response.getWriter();
String username=request.getParameter("username");
String password=request.getParameter("password");
String repassword=request.getParameter("repassword");
String amoun=request.getParameter("amount");
double amount=Double.parseDouble(amoun);
String adderess=request.getParameter("adderess");
String ph=request.getParameter("phone");
double phone=Double.parseDouble(ph);
//double mname=Double.parseDouble(num);
//String country=request.getParameter("country");
int status=RegisterUser.register(username, password, repassword, amount, adderess,phone);
if(status>0){
out.print("WELCOME! YOUR ACCOUNT HAS OPENED");
RequestDispatcher rd=request.getRequestDispatcher("index.jsp");
rd.include(request, response);
}
else{
out.print("Sorry,Registration failed. please try later");
RequestDispatcher rd=request.getRequestDispatcher("MyHtml.html");
rd.include(request, response);
}
out.close();
}
}
The RegisterUser class code:
package g;
import java.sql.*;
public class RegisterUser {
static int status=0;
//int accountno=1;
public static int register(String username,String password,String repassword,double amount,String adderess,double phone){
//public static int register(String email,String password,String gender,String country,String name){
Connection con=GetCon.getCon();
PreparedStatement ps;
try {
ps = con.prepareStatement("Insert into NEWACCOUNT values(?,?,?,?,?,?,?)");
int nextvalue1=GetCon.getPrimaryKey();
ps.setInt(1,nextvalue1);
ps.setString(2,username);
ps.setString(3,password);
ps.setString(4,repassword);
ps.setDouble(5,amount);
ps.setString(6,adderess);
ps.setDouble(7,phone);
status=ps.executeUpdate();
} catch (SQLException e) {
e.printStackTrace();
}
return status;
}
}
And here is the MyListener.java code, here had the java.lang.NullPointerException at line 13 as well.
package g;
import javax.servlet.*;
import java.sql.*;
public class MyListener implements ServletContextListener{
public void contextInitialized(ServletContextEvent arg0) {
int status=0;
Connection con=null;
try{
con=GetCon.getCon();
PreparedStatement ps1=con.prepareStatement("Select * from NEWACCOUNT");
try{
status=ps1.executeUpdate();
}
catch(Exception e)
{e.printStackTrace();
status=2;
System.out.println("my staus is 1111111"+status);
}
if(status==0)
{System.out.println("your table name already exist"+status);}
else if(status==2)
{System.out.println("else if part table does not exist new table has created"+status);
PreparedStatement ps3=con.prepareStatement("CREATE SEQUENCE javatpointnewaccount MINVALUE 1 MAXVALUE 999999999999 INCREMENT BY 1 START WITH 1 NOCACHE NOORDER NOCYCLE");
ps3.executeUpdate();
PreparedStatement ps=con.prepareStatement("CREATE TABLE NEWACCOUNT(ACCOUNTNO NUMBER,USERNAME VARCHAR2(4000),PASSWORD VARCHAR2(4000),REPASSWORD VARCHAR2(4000),AMOUNT NUMBER,ADDERESS VARCHAR2(4000),PHONE NUMBER,PRIMARY KEY (ACCOUNTNO))");
ps.executeUpdate();
}
else{System.out.println("else part "+status);
}}
catch(Exception e){e.printStackTrace();}
}
public void contextDestroyed(ServletContextEvent arg0) {
System.out.println("project undeployed");
}
}
Thank you for reading this and appreciate if anyone could help.
kindly help me out with this NullPointerException error i am getting while trying to use the remove(T entity) method in JPA
Here is my code
ControllerServlet
}else if (userPath.equals("/confirm_delete")){
String userid = request.getParameter("userToDelete");
int usrId = Integer.valueOf(userid);
SystemusersFacade usertoDelete = new SystemusersFacade();
Systemusers user = new Systemusers();
user = systemusersFacade.find(usrId);
usertoDelete.remove(user);
userPath ="/view_users";
SystemusersFacade extends AbstractFacade that contains the remove(T entity) method)
remove(T entity) method
public void remove(T entity) {
System.out.println(entity);
getEntityManager().remove(getEntityManager().merge(entity));
}
Below is the NullPointerException i am getting
Info: theBankingGuide was successfully deployed in 13,022 milliseconds.
Info: WebModule[null] ServletContext.log():ControllerServlet:
Info: entity.Systemusers[ userId=1 ]
Warning: StandardWrapperValve[ControllerServlet]: Servlet.service() for servlet ControllerServlet threw exception
java.lang.NullPointerException
at session.AbstractFacade.remove(AbstractFacade.java:35)
at controller.ControllerServlet.doPost(ControllerServlet.java:212)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:707)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:790)
at org.apache.catalina.core.StandardWrapper.service(StandardWrapper.java:1682)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:344)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:214)
at org.glassfish.tyrus.servlet.TyrusServletFilter.doFilter(TyrusServletFilter.java:295)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:256)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:214)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:316)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:160)
at org.apache.catalina.core.StandardPipeline.doInvoke(StandardPipeline.java:734)
at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:673)
at com.sun.enterprise.web.WebPipeline.invoke(WebPipeline.java:99)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:174)
at org.apache.catalina.connector.CoyoteAdapter.doService(CoyoteAdapter.java:415)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:282)
at com.sun.enterprise.v3.services.impl.ContainerMapper$HttpHandlerCallable.call(ContainerMapper.java:459)
at com.sun.enterprise.v3.services.impl.ContainerMapper.service(ContainerMapper.java:167)
at org.glassfish.grizzly.http.server.HttpHandler.runService(HttpHandler.java:201)
at org.glassfish.grizzly.http.server.HttpHandler.doHandle(HttpHandler.java:175)
at org.glassfish.grizzly.http.server.HttpServerFilter.handleRead(HttpServerFilter.java:235)
at org.glassfish.grizzly.filterchain.ExecutorResolver$9.execute(ExecutorResolver.java:119)
at org.glassfish.grizzly.filterchain.DefaultFilterChain.executeFilter(DefaultFilterChain.java:284)
at org.glassfish.grizzly.filterchain.DefaultFilterChain.executeChainPart(DefaultFilterChain.java:201)
at org.glassfish.grizzly.filterchain.DefaultFilterChain.execute(DefaultFilterChain.java:133)
at org.glassfish.grizzly.filterchain.DefaultFilterChain.process(DefaultFilterChain.java:112)
at org.glassfish.grizzly.ProcessorExecutor.execute(ProcessorExecutor.java:77)
at org.glassfish.grizzly.nio.transport.TCPNIOTransport.fireIOEvent(TCPNIOTransport.java:561)
at org.glassfish.grizzly.strategies.AbstractIOStrategy.fireIOEvent(AbstractIOStrategy.java:112)
at org.glassfish.grizzly.strategies.WorkerThreadIOStrategy.run0(WorkerThreadIOStrategy.java:117)
at org.glassfish.grizzly.strategies.WorkerThreadIOStrategy.access$100(WorkerThreadIOStrategy.java:56)
at org.glassfish.grizzly.strategies.WorkerThreadIOStrategy$WorkerThreadRunnable.run(WorkerThreadIOStrategy.java:137)
at org.glassfish.grizzly.threadpool.AbstractThreadPool$Worker.doWork(AbstractThreadPool.java:565)
at org.glassfish.grizzly.threadpool.AbstractThreadPool$Worker.run(AbstractThreadPool.java:545)
at java.lang.Thread.run(Thread.java:745)
I am sure that the entity is not passed as a null because when i use a System.out.Print, it gives me a value as you see in the log above
Info: entity.Systemusers[ userId=1 ]
I have also checked the debugger and the entity variable exits with the following parameters
entity Systemusers #1232
Static
_persistence_cacheKey HardCacheWeakIdentityMap$ReferenceCacheKey #1280
_persistence_fetchGroup null
_persistence_href null
_persistence_listener AttributeChangeListener #1281
_persistence_primaryKey Integer ObjectFieldVariable _persistence_primaryKey
_persistence_relationshipInfo null
_persistence_session null
_persistence_shouldRefreshFetchGroup boolean false
adsCollection IndirectList size = 0
mmtransinfoCollection IndirectList size = 0
securitiesinfoCollection IndirectList size = 0
systemUsersTime Date 02-Jan-2015 20:09:52
userEmail String jonahkayizzi#gmail.com
userId Integer 1
userName String "Jonah"
userPassword String "0xgl#kylZ"
userType String "Manager"
I also tried creating my custome delete function in the SystemusersFacade and i got the same error.
Please help out
EDIT
package session;
import entity.Systemusers;
import javax.ejb.Stateless;
import javax.persistence.EntityManager;
import javax.persistence.PersistenceContext;
/**
*
* #author Jonah
*/
#Stateless
public class SystemusersFacade extends AbstractFacade<Systemusers> {
#PersistenceContext(unitName = "theBankingGuidePU")
private EntityManager em;
#Override
protected EntityManager getEntityManager() {
return em;
}
public SystemusersFacade() {
super(Systemusers.class);
}
}
package session;
import java.util.List;
import javax.persistence.EntityManager;
import javax.persistence.Query;
public abstract class AbstractFacade<T> {
private Class<T> entityClass;
public AbstractFacade(Class<T> entityClass) {
this.entityClass = entityClass;
}
protected abstract EntityManager getEntityManager();
public void remove(T entity) {
System.out.println(entity);
getEntityManager().remove(getEntityManager().merge(entity));
}
}
SystemusersFacade usertoDelete = new SystemusersFacade() is your problem (ignoring strange name, maybe a copy/paste error). Since you instantiate it using new, you are bypassing container management so the annotations are not processed. You need to inject the bean into the class that uses it. Use something like this
#EJB
private SystemusersFacade systemusersFacade;
...
String userid = request.getParameter("userToDelete");
int usrId = Integer.valueOf(userid);
Systemusers user = systemusersFacade.find(usrId);
systemusersFacade.remove(user);
I am reading through Beginning J2EE 7 - Antonio Gonclaves and going through the source code, I have encountered an exception "org.glassfish.hk2.api.UnsatisfiedDependencyException" which I'm finding hard to solve. Without any qualifiers the application works fine. I'm using Netbeans 7.3.1 and Glassfish 4.0. Below is my source code and exception log
These are my service classes which I'm using #Qualifiers to differentiate
#Stateless
#ISBNAlt
public class ISBNGenerator implements INumberGenerator{
#Override
public String generateNumberr() {
return "ISBN generated";
}
}
Second service class
#Stateless
#ISBNDef
public class ISSNGenerator implements INumberGenerator{
#Override
public String generateNumberr() {
return "Working version 2";
}
}
The resource class
#ManagedBean
#RequestScoped
#Path("/test")
public class TestClass {
#Inject #ISBNAlt
private INumberGenerator ng;
#Produces(MediaType.TEXT_PLAIN)
#GET
public String getValue()
{
return ng.generateNumberr();
}
}
and i use this class for adding resource classes
import java.util.Set;
import javax.ws.rs.ApplicationPath;
import javax.ws.rs.core.Application;
/**
*
* #author naphlin
*/
#ApplicationPath("webresource")
public class ApplicationConfig extends Application{
#Override
public Set<Class<?>> getClasses() {
Set<Class<?>> resources = new java.util.HashSet<Class<?>>();
// following code can be used to customize Jersey 2.0 JSON provider:
try {
Class jsonProvider = Class.forName("org.glassfish.jersey.jackson.JacksonFeature");
// Class jsonProvider = Class.forName("org.glassfish.jersey.moxy.json.MoxyJsonFeature");
// Class jsonProvider = Class.forName("org.glassfish.jersey.jettison.JettisonFeature");
resources.add(jsonProvider);
} catch (ClassNotFoundException ex) {
java.util.logging.Logger.getLogger(getClass().getName()).log(java.util.logging.Level.SEVERE, null, ex);
}
addRestResourceClasses(resources);
return resources;
}
/**
* Do not modify addRestResourceClasses() method.
* It is automatically re-generated by NetBeans REST support to populate
* given list with all resources defined in the project.
*/
private void addRestResourceClasses(Set<Class<?>> resources) {
resources.add(helpers.TestClass.class);
}
}
After deploying my application and invoking the REST endpoint, i get this exception
Info: Initiating Jersey application, version Jersey: 2.0 2013-05-03 14:50:15...
Warning: StandardWrapperValve[config.ApplicationConfig]: Servlet.service() for servlet config.ApplicationConfig threw exception
org.glassfish.hk2.api.UnsatisfiedDependencyException: There was no object available for injection at Injectee(requiredType=INumberGenerator,parent=TestClass,qualifiers={#annotations.ISBNAlt()}),position=-1,optional=false,self=false,unqualified=null,1495563497)
at org.jvnet.hk2.internal.ThreeThirtyResolver.resolve(ThreeThirtyResolver.java:74)
at org.jvnet.hk2.internal.ClazzCreator.resolve(ClazzCreator.java:191)
at org.jvnet.hk2.internal.ClazzCreator.resolveAllDependencies(ClazzCreator.java:214)
at org.jvnet.hk2.internal.ClazzCreator.create(ClazzCreator.java:311)
at org.jvnet.hk2.internal.SystemDescriptor.create(SystemDescriptor.java:448)
at org.glassfish.jersey.process.internal.RequestScope.findOrCreate(RequestScope.java:157)
at org.jvnet.hk2.internal.Utilities.createService(Utilities.java:2204)
at org.jvnet.hk2.internal.ServiceLocatorImpl.getService(ServiceLocatorImpl.java:579)
at org.jvnet.hk2.internal.ServiceLocatorImpl.getService(ServiceLocatorImpl.java:566)
at org.glassfish.jersey.internal.inject.Injections.getOrCreate(Injections.java:172)
at org.glassfish.jersey.server.model.MethodHandler$ClassBasedMethodHandler.getInstance(MethodHandler.java:185)
at org.glassfish.jersey.server.internal.routing.PushMethodHandlerRouter.apply(PushMethodHandlerRouter.java:105)
at org.glassfish.jersey.server.internal.routing.RoutingStage._apply(RoutingStage.java:118)
at org.glassfish.jersey.server.internal.routing.RoutingStage._apply(RoutingStage.java:121)
at org.glassfish.jersey.server.internal.routing.RoutingStage._apply(RoutingStage.java:121)
at org.glassfish.jersey.server.internal.routing.RoutingStage._apply(RoutingStage.java:121)
at org.glassfish.jersey.server.internal.routing.RoutingStage.apply(RoutingStage.java:102)
at org.glassfish.jersey.server.internal.routing.RoutingStage.apply(RoutingStage.java:62)
at org.glassfish.jersey.process.internal.Stages.process(Stages.java:197)
at org.glassfish.jersey.server.ServerRuntime$1.run(ServerRuntime.java:215)
at org.glassfish.jersey.internal.Errors$1.call(Errors.java:271)
at org.glassfish.jersey.internal.Errors$1.call(Errors.java:267)
at org.glassfish.jersey.internal.Errors.process(Errors.java:315)
at org.glassfish.jersey.internal.Errors.process(Errors.java:297)
at org.glassfish.jersey.internal.Errors.process(Errors.java:267)
at org.glassfish.jersey.process.internal.RequestScope.runInScope(RequestScope.java:317)
at org.glassfish.jersey.server.ServerRuntime.process(ServerRuntime.java:198)
at org.glassfish.jersey.server.ApplicationHandler.handle(ApplicationHandler.java:946)
at org.glassfish.jersey.servlet.WebComponent.service(WebComponent.java:323)
at org.glassfish.jersey.servlet.ServletContainer.service(ServletContainer.java:372)
at org.glassfish.jersey.servlet.ServletContainer.service(ServletContainer.java:335)
at org.glassfish.jersey.servlet.ServletContainer.service(ServletContainer.java:218)
at org.apache.catalina.core.StandardWrapper.service(StandardWrapper.java:1682)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:318)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:160)
at org.apache.catalina.core.StandardPipeline.doInvoke(StandardPipeline.java:734)
at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:673)
at com.sun.enterprise.web.WebPipeline.invoke(WebPipeline.java:99)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:174)
at org.apache.catalina.connector.CoyoteAdapter.doService(CoyoteAdapter.java:357)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:260)
at com.sun.enterprise.v3.services.impl.ContainerMapper.service(ContainerMapper.java:188)
at org.glassfish.grizzly.http.server.HttpHandler.runService(HttpHandler.java:191)
at org.glassfish.grizzly.http.server.HttpHandler.doHandle(HttpHandler.java:168)
at org.glassfish.grizzly.http.server.HttpServerFilter.handleRead(HttpServerFilter.java:189)
at org.glassfish.grizzly.filterchain.ExecutorResolver$9.execute(ExecutorResolver.java:119)
at org.glassfish.grizzly.filterchain.DefaultFilterChain.executeFilter(DefaultFilterChain.java:288)
at org.glassfish.grizzly.filterchain.DefaultFilterChain.executeChainPart(DefaultFilterChain.java:206)
at org.glassfish.grizzly.filterchain.DefaultFilterChain.execute(DefaultFilterChain.java:136)
at org.glassfish.grizzly.filterchain.DefaultFilterChain.process(DefaultFilterChain.java:114)
at org.glassfish.grizzly.ProcessorExecutor.execute(ProcessorExecutor.java:77)
at org.glassfish.grizzly.nio.transport.TCPNIOTransport.fireIOEvent(TCPNIOTransport.java:838)
at org.glassfish.grizzly.strategies.AbstractIOStrategy.fireIOEvent(AbstractIOStrategy.java:113)
at org.glassfish.grizzly.strategies.WorkerThreadIOStrategy.run0(WorkerThreadIOStrategy.java:115)
at org.glassfish.grizzly.strategies.WorkerThreadIOStrategy.access$100(WorkerThreadIOStrategy.java:55)
at org.glassfish.grizzly.strategies.WorkerThreadIOStrategy$WorkerThreadRunnable.run(WorkerThreadIOStrategy.java:135)
at org.glassfish.grizzly.threadpool.AbstractThreadPool$Worker.doWork(AbstractThreadPool.java:564)
at org.glassfish.grizzly.threadpool.AbstractThreadPool$Worker.run(AbstractThreadPool.java:544)
at java.lang.Thread.run(Thread.java:745)
Any
Works on my machine ;o) No, actually I reproduced your code quickly with JBoss Forge. You can run the following JBoss Forge script if you want :
$ project-new --named testrest
$ rest-setup
$ cdi-setup
$ cdi-new-qualifier --named ISBNAlt --targetPackage org.testrest.util
$ cdi-new-qualifier --named ISBNDef --targetPackage org.testrest.util
$ java-new-interface --named INumberGenerator2 --targetPackage org.testrest.service
$ ejb-new-bean --named ISBNGenerator
$ ejb-new-bean --named ISSNGenerator
$ faces-setup
I deployed it on WildFly, and it's working fine. BTW, as simplification, you don't need #ManagedBean and #RequestScoped on your REST endpoint. Try to get rid of it and re-deploy on GlassFish. You can also give it a try on WildFly first.
I created a new Java EE 6 Enterprise-Application in Netbeans 7.4. with Glassfish 4.0 application server. So I have three Projects:
EAR
EJB
WAR
when I inject session bean from the EJB module into the managed bean of Web(WAR) module, it generates the following error
WARNING: /login.xhtml #16,131 value="#{loginBean.username}": Target Unreachable, identifier 'loginBean' resolved to null
javax.el.PropertyNotFoundException: /login.xhtml #16,131 value="#{loginBean.username}": Target Unreachable, identifier 'loginBean' resolved to null
at com.sun.faces.facelets.el.TagValueExpression.getType(TagValueExpression.java:100)
at org.primefaces.renderkit.InputRenderer.findImplicitConverter(InputRenderer.java:170)
at org.primefaces.renderkit.InputRenderer.findConverter(InputRenderer.java:190)
at org.primefaces.renderkit.InputRenderer.getConvertedValue(InputRenderer.java:196)
at javax.faces.component.UIInput.getConvertedValue(UIInput.java:1046)
at javax.faces.component.UIInput.validate(UIInput.java:976)
at javax.faces.component.UIInput.executeValidate(UIInput.java:1249)
at javax.faces.component.UIInput.processValidators(UIInput.java:712)
at javax.faces.component.UIComponentBase.processValidators(UIComponentBase.java:1261)
at javax.faces.component.UIForm.processValidators(UIForm.java:253)
at javax.faces.component.UIComponentBase.processValidators(UIComponentBase.java:1261)
at javax.faces.component.UIComponentBase.processValidators(UIComponentBase.java:1261)
at org.primefaces.component.layout.Layout.processValidators(Layout.java:246)
at javax.faces.component.UIComponentBase.processValidators(UIComponentBase.java:1261)
at javax.faces.component.UIComponentBase.processValidators(UIComponentBase.java:1261)
at javax.faces.component.UIViewRoot.processValidators(UIViewRoot.java:1195)
at com.sun.faces.lifecycle.ProcessValidationsPhase.execute(ProcessValidationsPhase.java:76)
at com.sun.faces.lifecycle.Phase.doPhase(Phase.java:101)
at com.sun.faces.lifecycle.LifecycleImpl.execute(LifecycleImpl.java:198)
at javax.faces.webapp.FacesServlet.service(FacesServlet.java:646)
at org.apache.catalina.core.StandardWrapper.service(StandardWrapper.java:1682)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:344)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:214)
at filters.AuthFilter.doFilter(AuthFilter.java:44)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:256)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:214)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:316)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:160)
at org.apache.catalina.core.StandardPipeline.doInvoke(StandardPipeline.java:734)
at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:673)
at com.sun.enterprise.web.WebPipeline.invoke(WebPipeline.java:99)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:174)
at org.apache.catalina.connector.CoyoteAdapter.doService(CoyoteAdapter.java:357)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:260)
at com.sun.enterprise.v3.services.impl.ContainerMapper.service(ContainerMapper.java:188)
at org.glassfish.grizzly.http.server.HttpHandler.runService(HttpHandler.java:191)
at org.glassfish.grizzly.http.server.HttpHandler.doHandle(HttpHandler.java:168)
at org.glassfish.grizzly.http.server.HttpServerFilter.handleRead(HttpServerFilter.java:189)
at org.glassfish.grizzly.filterchain.ExecutorResolver$9.execute(ExecutorResolver.java:119)
at org.glassfish.grizzly.filterchain.DefaultFilterChain.executeFilter(DefaultFilterChain.java:288)
at org.glassfish.grizzly.filterchain.DefaultFilterChain.executeChainPart(DefaultFilterChain.java:206)
at org.glassfish.grizzly.filterchain.DefaultFilterChain.execute(DefaultFilterChain.java:136)
at org.glassfish.grizzly.filterchain.DefaultFilterChain.process(DefaultFilterChain.java:114)
at org.glassfish.grizzly.ProcessorExecutor.execute(ProcessorExecutor.java:77)
at org.glassfish.grizzly.nio.transport.TCPNIOTransport.fireIOEvent(TCPNIOTransport.java:838)
at org.glassfish.grizzly.strategies.AbstractIOStrategy.fireIOEvent(AbstractIOStrategy.java:113)
at org.glassfish.grizzly.strategies.WorkerThreadIOStrategy.run0(WorkerThreadIOStrategy.java:115)
at org.glassfish.grizzly.strategies.WorkerThreadIOStrategy.access$100(WorkerThreadIOStrategy.java:55)
at org.glassfish.grizzly.strategies.WorkerThreadIOStrategy$WorkerThreadRunnable.run(WorkerThreadIOStrategy.java:135)
at org.glassfish.grizzly.threadpool.AbstractThreadPool$Worker.doWork(AbstractThreadPool.java:564)
at org.glassfish.grizzly.threadpool.AbstractThreadPool$Worker.run(AbstractThreadPool.java:544)
at java.lang.Thread.run(Thread.java:744)
Caused by: javax.el.PropertyNotFoundException: Target Unreachable, identifier 'loginBean' resolved to null
at com.sun.el.parser.AstValue.getTarget(AstValue.java:174)
at com.sun.el.parser.AstValue.getType(AstValue.java:86)
at com.sun.el.ValueExpressionImpl.getType(ValueExpressionImpl.java:201)
at org.jboss.weld.el.WeldValueExpression.getType(WeldValueExpression.java:93)
at com.sun.faces.facelets.el.TagValueExpression.getType(TagValueExpression.java:98)
... 51 more
And during deployment the Glassfish server also generates the following error
SEVERE: Exception while loading the app
SEVERE: Undeployment failed for context /ZTE-WMS-war
SEVERE: Exception while loading the app : java.lang.IllegalStateException: ContainerBase.addChild: start: org.apache.catalina.LifecycleException: java.lang.RuntimeException: java.lang.NoClassDefFoundError: Lcom/wms/sessions/UseraccountManager;
I wrote the managed bean class(LoginBean) as follows
package com.wms.managedbeans;
import com.wms.sessions.UseraccountManager;
import java.io.Serializable;
import javax.ejb.EJB;
import javax.enterprise.context.RequestScoped;
import javax.faces.application.FacesMessage;
import javax.faces.bean.ManagedBean;
import javax.faces.context.FacesContext;
import javax.inject.Named;
import javax.servlet.http.HttpSession;
//#Named("loginBean")
#ManagedBean(name="loginBean")
#RequestScoped
public class LoginBean implements Serializable {
private static final long serialVersionUID = 1L;
private String password;
private String message, username;
#EJB
private UseraccountManager uam;
public String getMessage() {
return message;
}
public void setMessage(String message) {
this.message = message;
}
public String getPassword() {
return password;
}
public void setPassword(String password) {
this.password = password;
}
public String getUsername() {
return username;
}
public void setUsername(String uname) {
this.username = uname;
}
public String getUser() {
System.out.println(Util.getUserId());
return Util.getUserId();
}
public String getUserType(){
HttpSession session = Util.getSession();
if ( session != null )
return (String) session.getAttribute("userType");
else
return null;
}
public String login() {
String userType = uam.validateUser(username, password);
HttpSession session = Util.getSession();
if (userType.equals("unknown")){
FacesContext.getCurrentInstance().addMessage(
null,
new FacesMessage(FacesMessage.SEVERITY_WARN,
"Invalid Login!",
"Please Try Again!"));
// invalidate session, and redirect to other pages
//message = "Invalid Login. Please Try Again!";
return "login";
}
else{
// get Http Session and store username
session.setAttribute("username", username);
session.setAttribute("userType",userType);
if (userType.equals("administrator"))
return "admin/adminHome?faces-redirect=true";
else if(userType.equals("warehouseman"))
return "WM/wmHome?faces-redirect=true";
else if(userType.equals("employee"))
return "emp/empHome?faces-redirect=true";
else
return "man/manHome?faces-redirect=true";
}
}
public String logout() {
HttpSession session = Util.getSession();
session.invalidate();
return "/login?faces-redirect=true";
}
}
When I added the "EJB jar" into the WEB(WAR) module as a library it works perfectly.
Now my question is, is it mandatory to add the EJB jar as a library in-order to inject session beans into managed beans. if there is any other way(s) please help me