Discussoes de Programacao e Tecnologia

Erro Projeto Java Web com PRIMEFACES e JPA

3 respostas
G
Gabriellegal_Br

O porque esta dando este erro? Alguém poderia me dar uma ajuda.

jul 25, 2016 1:44:49 PM com.sun.faces.lifecycle.InvokeApplicationPhase execute
ADVERTÊNCIA: #{cadastrarCursoBean.salvarCapitulo}: java.lang.NullPointerException
javax.faces.FacesException: #{cadastrarCursoBean.salvarCapitulo}: java.lang.NullPointerException
	at com.sun.faces.application.ActionListenerImpl.processAction(ActionListenerImpl.java:118)
	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.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:230)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:165)
	at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:53)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:192)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:165)
	at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:199)
	at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:108)
	at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:522)
	at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:140)
	at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:79)
	at org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:620)
	at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:87)
	at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:349)
	at org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:1110)
	at org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:66)
	at org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:785)
	at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1419)
	at org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:44)
	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)
Caused by: javax.faces.el.EvaluationException: java.lang.NullPointerException
	at javax.faces.component.MethodBindingMethodExpressionAdapter.invoke(MethodBindingMethodExpressionAdapter.java:101)
	at com.sun.faces.application.ActionListenerImpl.processAction(ActionListenerImpl.java:102)
	... 29 more
Caused by: java.lang.NullPointerException
	at br.com.caelum.livraria.bean.CadastrarCursoBean.salvarCapitulo(CadastrarCursoBean.java:70)
	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:247)
	at org.apache.el.MethodExpressionImpl.invoke(MethodExpressionImpl.java:267)
	at com.sun.faces.facelets.el.TagMethodExpression.invoke(TagMethodExpression.java:105)
	at javax.faces.component.MethodBindingMethodExpressionAdapter.invoke(MethodBindingMethodExpressionAdapter.java:87)
	... 30 more

jul 25, 2016 1:44:49 PM com.sun.faces.context.AjaxExceptionHandlerImpl handlePartialResponseError
GRAVE: javax.faces.el.EvaluationException: java.lang.NullPointerException
	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.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:230)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:165)
	at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:53)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:192)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:165)
	at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:199)
	at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:108)
	at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:522)
	at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:140)
	at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:79)
	at org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:620)
	at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:87)
	at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:349)
	at org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:1110)
	at org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:66)
	at org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:785)
	at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1419)
	at org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:44)
	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)
Caused by: java.lang.NullPointerException
	at br.com.caelum.livraria.bean.CadastrarCursoBean.salvarCapitulo(CadastrarCursoBean.java:70)
	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:247)
	at org.apache.el.MethodExpressionImpl.invoke(MethodExpressionImpl.java:267)
	at com.sun.faces.facelets.el.TagMethodExpression.invoke(TagMethodExpression.java:105)
	at javax.faces.component.MethodBindingMethodExpressionAdapter.invoke(MethodBindingMethodExpressionAdapter.java:87)
	... 30 more
Alura Desenvolvimento Back-End Java Sua Carreira em desenvolvimento back-end Java: dos fundamentos à arquitetura de sistemas...

3 Respostas

jacoboliveira
jacoboliveira

mostra a classe CadastrarCursoBean, por favor!

G
Gabriellegal_Br

CadastrarCursoBean.class

package br.com.caelum.livraria.bean;

import java.io.IOException;
import java.nio.file.Files;
import java.nio.file.Path;
import java.nio.file.Paths;
import java.nio.file.StandardCopyOption;
import java.util.List;

import javax.faces.bean.ManagedBean;
import javax.faces.bean.ViewScoped;

import org.primefaces.event.FileUploadEvent;
import org.primefaces.model.UploadedFile;

import br.com.caelum.livraria.dao.CapituloDao;
import br.com.caelum.livraria.dao.DAO;
import br.com.caelum.livraria.dao.VideoAulaDao;
import br.com.caelum.livraria.modelo.Autor;
import br.com.caelum.livraria.modelo.Capitulo;
import br.com.caelum.livraria.modelo.VideoAula;

@ManagedBean
@ViewScoped
public class CadastrarCursoBean {

	private VideoAula videoAula = new VideoAula();

	private Capitulo capitulo = new Capitulo();

	private List<Capitulo> capitulos;

	private UploadedFile arquivo;

	public UploadedFile getArquivo() {
		return arquivo;

	}

	public void setArquivo(UploadedFile arquivo) {
		this.arquivo = arquivo;
	}

	public Capitulo getCapitulo() {
		return capitulo;
	}

	public void setCapitulo(Capitulo capitulo) {
		this.capitulo = capitulo;
	}

	public void upload(FileUploadEvent evento) {
		try {
			UploadedFile arquivo = evento.getFile();
			videoAula.setNomeVideo(arquivo.getFileName());
			Path arquivoTemp = Files.createTempFile(null, null);
			Files.copy(arquivo.getInputstream(), arquivoTemp, StandardCopyOption.REPLACE_EXISTING);
			videoAula.setCaminho(arquivoTemp.toString());
		} catch (IOException erro) {
			erro.printStackTrace();
		}

	}

	public void salvarCapitulo() {
		try {
			Path origem = Paths.get(videoAula.getCaminho());
			Path destino = Paths.get("C:/Users/Gabriel-gbr/workspace/Elearning/WebContent/resources/videoAulas/"
					+ videoAula.getNomeVideo() + ".png");
			Files.copy(origem, destino, StandardCopyOption.REPLACE_EXISTING);
			new VideoAulaDao().adiciona(videoAula);
			capitulo.setVideoAula(videoAula);
			new CapituloDao().adiciona(capitulo);
			capitulos.add(capitulo);
			int i = capitulos.size();
			System.out.println(i);

		} catch (IOException erro) {
			erro.printStackTrace();
		}

	}

	public List<Capitulo> getCapitulos() {
		return capitulos;
	}

	public void setCapitulos(List<Capitulo> capitulos) {
		this.capitulos = capitulos;
	}

	public void remover(Capitulo capitulo) {
		new CapituloDao().remove(capitulo);
	}

}
jacoboliveira
jacoboliveira

O erro NullPointerException acusa na linha 70, vê se o objeto origem esta nulo ou então se o atributo caminho da classe VideoAula esta nulo , na linha 67
O caminho do video destino esta com extensão png, acredito que isso deva ser corrigido

Criado 25 de julho de 2016
Ultima resposta 27 de jul. de 2016
Respostas 3
Participantes 2

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