NullPointerException categoriaService- Spring 4

Java

30/01/2015

Pessoal, estou iniciando o Spring agora, e esta dando o seguinte erro : 

SEVERE: Received 'java.lang.NullPointerException' when invoking action listener '#{cadastroClienteBean.cadastrar}' for component 'j_idt8'
Jan 30, 2015 10:36:35 AM javax.faces.event.MethodExpressionActionListener processAction
SEVERE: java.lang.NullPointerException
	at br.com.projetospringjsf.controller.CadastroClienteBean.cadastrar(CadastroClienteBean.java:28)
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
	at java.lang.reflect.Method.invoke(Unknown Source)
	at org.apache.el.parser.AstValue.invoke(AstValue.java:278)
	at org.apache.el.MethodExpressionImpl.invoke(MethodExpressionImpl.java:273)
	at com.sun.faces.facelets.el.TagMethodExpression.invoke(TagMethodExpression.java:105)
	at javax.faces.event.MethodExpressionActionListener.processAction(MethodExpressionActionListener.java:148)
	at javax.faces.event.ActionEvent.processListener(ActionEvent.java:88)
	at javax.faces.component.UIComponentBase.broadcast(UIComponentBase.java:775)
	at javax.faces.component.UICommand.broadcast(UICommand.java:300)
	at javax.faces.component.UIViewRoot.broadcastEvents(UIViewRoot.java:786)
	at javax.faces.component.UIViewRoot.processApplication(UIViewRoot.java:1251)
	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:118)
	at javax.faces.webapp.FacesServlet.service(FacesServlet.java:593)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:303)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208)
	at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:241)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208)
	at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:220)
	at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:122)
	at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:503)
	at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:170)
	at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:103)
	at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:950)
	at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:116)
	at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:421)
	at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1070)
	at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:611)
	at org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:316)
	at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source)
	at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)
	at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
	at java.lang.Thread.run(Unknown Source)

Jan 30, 2015 10:36:35 AM com.sun.faces.context.AjaxExceptionHandlerImpl log
SEVERE: JSF1073: javax.faces.event.AbortProcessingException caught during processing of INVOKE_APPLICATION 5 : UIComponent-ClientId=j_idt7:j_idt8, Message=/LayoutPadrao.xhtml @17,54 actionListener="#{cadastroClienteBean.cadastrar}": java.lang.NullPointerException
Jan 30, 2015 10:36:35 AM com.sun.faces.context.AjaxExceptionHandlerImpl log
SEVERE: /LayoutPadrao.xhtml @17,54 actionListener="#{cadastroClienteBean.cadastrar}": java.lang.NullPointerException
javax.faces.event.AbortProcessingException: /LayoutPadrao.xhtml @17,54 actionListener="#{cadastroClienteBean.cadastrar}": java.lang.NullPointerException
	at javax.faces.event.MethodExpressionActionListener.processAction(MethodExpressionActionListener.java:182)
	at javax.faces.event.ActionEvent.processListener(ActionEvent.java:88)
	at javax.faces.component.UIComponentBase.broadcast(UIComponentBase.java:775)
	at javax.faces.component.UICommand.broadcast(UICommand.java:300)
	at javax.faces.component.UIViewRoot.broadcastEvents(UIViewRoot.java:786)
	at javax.faces.component.UIViewRoot.processApplication(UIViewRoot.java:1251)
	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:118)
	at javax.faces.webapp.FacesServlet.service(FacesServlet.java:593)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:303)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208)
	at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:241)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208)
	at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:220)
	at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:122)
	at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:503)
	at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:170)
	at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:103)
	at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:950)
	at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:116)


Segue meu Bean:
@ManagedBean(name = "cadastroClienteBean")
@SessionScoped
public class CadastroClienteBean implements Serializable {

	private static final long serialVersionUID = 1L;

	@Autowired
	private CategoriaService categoriaService;

	// action listener event
	public void cadastrar(ActionEvent event) {
		System.out.println("dfsafdfsad");
		List<Categoria> list = categoriaService.listCategoria();
		System.out.println("dfsafdfsad");

	}

}


Serviço

public interface CategoriaService {
	public List<Categoria> listCategoria();
}

@Service
public class CategoriaServiceImpl  implements CategoriaService{

	@Override
	public List<Categoria> listCategoria() {
		List<Categoria> list = new ArrayList<Categoria>();
		return list;
	}
}


servlet-context.xml

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
	xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
	xmlns:mvc="http://www.springframework.org/schema/mvc"
	xmlns:context="http://www.springframework.org/schema/context"
	xsi:schemaLocation="
        http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc-3.0.xsd
        http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-3.0.xsd
        http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-3.0.xsd">

	<!-- DispatcherServlet Context: defines this servlet's request-processing infrastructure -->

	<!-- Scans within the base package of the application for @Components to configure as beans -->
	<!-- @Controller, @Service, @Configuration, etc. -->
	<context:component-scan base-package="br.com.projetospringjsf.controller" />

	<!-- Enables the Spring MVC @Controller programming model -->
	<mvc:annotation-driven />
</beans>


O meu problema esta aqui, o serviço esta vindo como nullo:

	@Autowired
	private CategoriaService categoriaService;
Evandro Abreu

Evandro Abreu

Curtidas 0

Respostas

Ronaldo Lanhellas

Ronaldo Lanhellas

30/01/2015

Você colocou o get() e set() do CategoriaService dentro do ManagedBean ?
GOSTEI 0
Ronaldo Lanhellas

Ronaldo Lanhellas

30/01/2015

Você colocou o get() e set() do CategoriaService dentro do ManagedBean ?
GOSTEI 0
Evandro Abreu

Evandro Abreu

30/01/2015

gerei sim os getters e setters.

abc
GOSTEI 0
Ronaldo Lanhellas

Ronaldo Lanhellas

30/01/2015

Tente assim:

@Autowired
private CategoriaServiceImpl categoriaService;
GOSTEI 0
Evandro Abreu

Evandro Abreu

30/01/2015

Ronaldo, mesmo problema.

abc
GOSTEI 0
Ronaldo Lanhellas

Ronaldo Lanhellas

30/01/2015

Bom, você entende que o seu @Service CategoriaServiceImpl não está sendo gerenciado pelo Spring ?

Pois bem, verifique se há algum erro no console a respeito de injeção de dependências dentro do CategoriaServiceImpl, ou faça um teste injetando o CategoriaServiceImpl em outro local diferente do CadastroClienteBean.

Aguardo seu retorno.
GOSTEI 0
Ronaldo Lanhellas

Ronaldo Lanhellas

30/01/2015

Bom, você entende que o seu @Service CategoriaServiceImpl não está sendo gerenciado pelo Spring ?

Pois bem, verifique se há algum erro no console a respeito de injeção de dependências dentro do CategoriaServiceImpl, ou faça um teste injetando o CategoriaServiceImpl em outro local diferente do CadastroClienteBean.

Aguardo seu retorno.
GOSTEI 0
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