Discussoes de Programacao e Tecnologia

Problema com Struts 2 e Tiles

11 respostas
euripedes_jr
euripedes_jr

Olá pessoal tudo bom???

alguem sabe oq pode ser esse erro???

javax.servlet.ServletException
	org.apache.struts2.dispatcher.Dispatcher.serviceAction(Dispatcher.java:518)
	org.apache.struts2.dispatcher.FilterDispatcher.doFilter(FilterDispatcher.java:421)
Alura Desenvolvimento Back-End Java Sua Carreira em desenvolvimento back-end Java: dos fundamentos à arquitetura de sistemas...

11 Respostas

wariows
wariows

põe a stacktrace inteira… se possível o struts.xml e a action que vc tá tentando acessar

euripedes_jr
euripedes_jr
struts.xml
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE struts PUBLIC
    "-//Apache Software Foundation//DTD Struts Configuration 2.0//EN"
    "http://struts.apache.org/dtds/struts-2.0.dtd">

<!-- Esse é o arquivo de configuração, onde ficam as informações como: 
     actions, forwards, interceptors, plugins, etc. -->

<struts>

	<!-- necessário para reconhecer os métodos internos da action -->
    <constant name="struts.enable.DynamicMethodInvocation" value="true" />
    
    <!-- Habilita o modo de desenvolvimento, útil para fazer debug -->
    <constant name="struts.devMode" value="false" />

	<package name="br.org.trisoft.actions" namespace="/" extends="struts-default">       
        <action name="Index" class="br.org.trisoft.actions.Index">			
			<result name="success">/pages/welcome.jsp</result>			
        </action>
    </package>
        
    <package name="Estoque" namespace="/" extends="tiles-default">
	   <action name="Estoque" class="br.org.trisoft.actions.EstoqueAction" method="list">			
			<!-- definindo os resultados -->
			<result name="deleteOk" type="redirect">Estoque.action</result>
			<result name="saveOk" type="redirect">Estoque.action</result>
			<result name="list" type="tiles">estoque.list</result>
			<result name="input" type="tiles">estoque.form</result>
        </action>
    </package>
    
    <package name="Fabricante" namespace="/" extends="tiles-default">
	   <action name="Fabricante" class="br.org.trisoft.actions.FabricanteAction" method="list">			
			<!-- definindo os resultados -->
			<result name="deleteOk" type="redirect">Fabricante.action</result>
			<result name="saveOk" type="redirect">Fabricante.action</result>
			<result name="list" type="tiles">fabricante.list</result>
			<result name="input" type="tiles">fabricante.form</result>
        </action>
    </package>
        
</struts>
FabricanteAction
package br.org.trisoft.actions;

import java.util.List;

import org.apache.struts2.interceptor.validation.SkipValidation;

import br.org.trisoft.business.FabricanteBusiness;
import br.org.trisoft.vo.Fabricante;

import com.opensymphony.xwork2.ActionSupport;
import com.opensymphony.xwork2.validator.annotations.Validation;
import com.opensymphony.xwork2.validator.annotations.VisitorFieldValidator;

@Validation
public class FabricanteAction extends ActionSupport {

	//--------------------------------------------------------------------------
	private static final long serialVersionUID = 6229186240009727676L;	
	//--------------------------------------------------------------------------
	// uso interno apenas na classe action
	private FabricanteBusiness FabricanteBusiness;
	//--------------------------------------------------------------------------
	// utilizado e referenciado na interface
	private Fabricante fabricante;
	private List FabricanteList;
	private Integer id;

	//--------------------------------------------------------------------------
	// construtor da classe
	public FabricanteAction() {
		// inicializando os DAO
		this.FabricanteBusiness = new FabricanteBusiness();
	}

	//--------------------------------------------------------------------------
	// @BEGIN: métodos action da classe
	public String execute() throws Exception {
		return "list";
	}

	public String insert() throws Exception {
		FabricanteBusiness.inserir(fabricante);
			return "input";
		}

	public String save() throws Exception {
		FabricanteBusiness.altera(id,fabricante);
		return "saveOk";
	}

	public String delete() throws Exception {
		FabricanteBusiness.remove(id);
		return "deleteOk";
	}

	// ignora a validação
	@SkipValidation
	public String list() throws Exception {
		FabricanteList = FabricanteBusiness.listar();
		return "list";
	}

	public String edit() throws Exception {
		fabricante = FabricanteBusiness.pesquisar(id, fabricante);
		return "input";
	}

	public String add() throws Exception {
		fabricante = new Fabricante();
		return "input";
	}
	
	// sets e gets
	public List getFabricanteList() {
		if (null == FabricanteList)
			FabricanteList = FabricanteBusiness.listar();
		return FabricanteList;
	}

	public Integer getId() {
		return id;
	}

	public void setId(Integer id) {
		this.id = id;
	}

	// visita o objeto para realizar a validação
	@VisitorFieldValidator(message = "")
	public Fabricante getFabricante() {
		return fabricante;
	}

	public void setCliente(Fabricante fabricante) {
		this.fabricante = fabricante;
	}
	//--------------------------------------------------------------------------
}
wariows
wariows

e a stack trace?

euripedes_jr
euripedes_jr

Eu passo esse link no menu para acessar “Fabricante.action”

stack trace
type Exception report

message

description The server encountered an internal error () that prevented it from fulfilling this request.

exception

javax.servlet.ServletException
	org.apache.struts2.dispatcher.Dispatcher.serviceAction(Dispatcher.java:518)
	org.apache.struts2.dispatcher.FilterDispatcher.doFilter(FilterDispatcher.java:421)

root cause

java.lang.NullPointerException
	oracle.toplink.essentials.ejb.cmp3.EntityManagerFactoryProvider.createEntityManagerFactory(EntityManagerFactoryProvider.java:120)
	javax.persistence.Persistence.createEntityManagerFactory(Persistence.java:37)
	javax.persistence.Persistence.createEntityManagerFactory(Persistence.java:27)
	br.org.trisoft.persistence.FabricanteJPADAO.<init>(Unknown Source)
	br.org.trisoft.service.FabricanteServiceDAO.<init>(Unknown Source)
	br.org.trisoft.business.FabricanteBusiness.listar(Unknown Source)
	br.org.trisoft.actions.FabricanteAction.list(Unknown Source)
	sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
	sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
	java.lang.reflect.Method.invoke(Method.java:597)
	com.opensymphony.xwork2.DefaultActionInvocation.invokeAction(DefaultActionInvocation.java:399)
	com.opensymphony.xwork2.DefaultActionInvocation.invokeActionOnly(DefaultActionInvocation.java:262)
	com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:224)
	com.opensymphony.xwork2.interceptor.DefaultWorkflowInterceptor.doIntercept(DefaultWorkflowInterceptor.java:213)
	com.opensymphony.xwork2.interceptor.MethodFilterInterceptor.intercept(MethodFilterInterceptor.java:86)
	com.opensymphony.xwork2.DefaultActionInvocation$2.doProfiling(DefaultActionInvocation.java:219)
	com.opensymphony.xwork2.DefaultActionInvocation$2.doProfiling(DefaultActionInvocation.java:218)
	com.opensymphony.xwork2.util.profiling.UtilTimerStack.profile(UtilTimerStack.java:455)
	com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:216)
	org.apache.struts2.interceptor.validation.AnnotationValidationInterceptor.doIntercept(AnnotationValidationInterceptor.java:44)
	com.opensymphony.xwork2.interceptor.MethodFilterInterceptor.intercept(MethodFilterInterceptor.java:86)
	com.opensymphony.xwork2.DefaultActionInvocation$2.doProfiling(DefaultActionInvocation.java:219)
	com.opensymphony.xwork2.DefaultActionInvocation$2.doProfiling(DefaultActionInvocation.java:218)
	com.opensymphony.xwork2.util.profiling.UtilTimerStack.profile(UtilTimerStack.java:455)
	com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:216)
	com.opensymphony.xwork2.interceptor.ConversionErrorInterceptor.intercept(ConversionErrorInterceptor.java:123)
	com.opensymphony.xwork2.DefaultActionInvocation$2.doProfiling(DefaultActionInvocation.java:219)
	com.opensymphony.xwork2.DefaultActionInvocation$2.doProfiling(DefaultActionInvocation.java:218)
	com.opensymphony.xwork2.util.profiling.UtilTimerStack.profile(UtilTimerStack.java:455)
	com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:216)
	com.opensymphony.xwork2.interceptor.ParametersInterceptor.intercept(ParametersInterceptor.java:161)
	com.opensymphony.xwork2.DefaultActionInvocation$2.doProfiling(DefaultActionInvocation.java:219)
	com.opensymphony.xwork2.DefaultActionInvocation$2.doProfiling(DefaultActionInvocation.java:218)
	com.opensymphony.xwork2.util.profiling.UtilTimerStack.profile(UtilTimerStack.java:455)
	com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:216)
	com.opensymphony.xwork2.interceptor.StaticParametersInterceptor.intercept(StaticParametersInterceptor.java:105)
	com.opensymphony.xwork2.DefaultActionInvocation$2.doProfiling(DefaultActionInvocation.java:219)
	com.opensymphony.xwork2.DefaultActionInvocation$2.doProfiling(DefaultActionInvocation.java:218)
	com.opensymphony.xwork2.util.profiling.UtilTimerStack.profile(UtilTimerStack.java:455)
	com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:216)
	org.apache.struts2.interceptor.CheckboxInterceptor.intercept(CheckboxInterceptor.java:83)
	com.opensymphony.xwork2.DefaultActionInvocation$2.doProfiling(DefaultActionInvocation.java:219)
	com.opensymphony.xwork2.DefaultActionInvocation$2.doProfiling(DefaultActionInvocation.java:218)
	com.opensymphony.xwork2.util.profiling.UtilTimerStack.profile(UtilTimerStack.java:455)
	com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:216)
	org.apache.struts2.interceptor.FileUploadInterceptor.intercept(FileUploadInterceptor.java:207)
	com.opensymphony.xwork2.DefaultActionInvocation$2.doProfiling(DefaultActionInvocation.java:219)
	com.opensymphony.xwork2.DefaultActionInvocation$2.doProfiling(DefaultActionInvocation.java:218)
	com.opensymphony.xwork2.util.profiling.UtilTimerStack.profile(UtilTimerStack.java:455)
	com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:216)
	com.opensymphony.xwork2.interceptor.ModelDrivenInterceptor.intercept(ModelDrivenInterceptor.java:74)
	com.opensymphony.xwork2.DefaultActionInvocation$2.doProfiling(DefaultActionInvocation.java:219)
	com.opensymphony.xwork2.DefaultActionInvocation$2.doProfiling(DefaultActionInvocation.java:218)
	com.opensymphony.xwork2.util.profiling.UtilTimerStack.profile(UtilTimerStack.java:455)
	com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:216)
	com.opensymphony.xwork2.interceptor.ScopedModelDrivenInterceptor.intercept(ScopedModelDrivenInterceptor.java:127)
	com.opensymphony.xwork2.DefaultActionInvocation$2.doProfiling(DefaultActionInvocation.java:219)
	com.opensymphony.xwork2.DefaultActionInvocation$2.doProfiling(DefaultActionInvocation.java:218)
	com.opensymphony.xwork2.util.profiling.UtilTimerStack.profile(UtilTimerStack.java:455)
	com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:216)
	org.apache.struts2.interceptor.ProfilingActivationInterceptor.intercept(ProfilingActivationInterceptor.java:107)
	com.opensymphony.xwork2.DefaultActionInvocation$2.doProfiling(DefaultActionInvocation.java:219)
	com.opensymphony.xwork2.DefaultActionInvocation$2.doProfiling(DefaultActionInvocation.java:218)
	com.opensymphony.xwork2.util.profiling.UtilTimerStack.profile(UtilTimerStack.java:455)
	com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:216)
	org.apache.struts2.interceptor.debugging.DebuggingInterceptor.intercept(DebuggingInterceptor.java:206)
	com.opensymphony.xwork2.DefaultActionInvocation$2.doProfiling(DefaultActionInvocation.java:219)
	com.opensymphony.xwork2.DefaultActionInvocation$2.doProfiling(DefaultActionInvocation.java:218)
	com.opensymphony.xwork2.util.profiling.UtilTimerStack.profile(UtilTimerStack.java:455)
	com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:216)
	com.opensymphony.xwork2.interceptor.ChainingInterceptor.intercept(ChainingInterceptor.java:115)
	com.opensymphony.xwork2.DefaultActionInvocation$2.doProfiling(DefaultActionInvocation.java:219)
	com.opensymphony.xwork2.DefaultActionInvocation$2.doProfiling(DefaultActionInvocation.java:218)
	com.opensymphony.xwork2.util.profiling.UtilTimerStack.profile(UtilTimerStack.java:455)
	com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:216)
	com.opensymphony.xwork2.interceptor.I18nInterceptor.intercept(I18nInterceptor.java:143)
	com.opensymphony.xwork2.DefaultActionInvocation$2.doProfiling(DefaultActionInvocation.java:219)
	com.opensymphony.xwork2.DefaultActionInvocation$2.doProfiling(DefaultActionInvocation.java:218)
	com.opensymphony.xwork2.util.profiling.UtilTimerStack.profile(UtilTimerStack.java:455)
	com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:216)
	com.opensymphony.xwork2.interceptor.PrepareInterceptor.intercept(PrepareInterceptor.java:115)
	com.opensymphony.xwork2.DefaultActionInvocation$2.doProfiling(DefaultActionInvocation.java:219)
	com.opensymphony.xwork2.DefaultActionInvocation$2.doProfiling(DefaultActionInvocation.java:218)
	com.opensymphony.xwork2.util.profiling.UtilTimerStack.profile(UtilTimerStack.java:455)
	com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:216)
	org.apache.struts2.interceptor.ServletConfigInterceptor.intercept(ServletConfigInterceptor.java:170)
	com.opensymphony.xwork2.DefaultActionInvocation$2.doProfiling(DefaultActionInvocation.java:219)
	com.opensymphony.xwork2.DefaultActionInvocation$2.doProfiling(DefaultActionInvocation.java:218)
	com.opensymphony.xwork2.util.profiling.UtilTimerStack.profile(UtilTimerStack.java:455)
	com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:216)
	com.opensymphony.xwork2.interceptor.AliasInterceptor.intercept(AliasInterceptor.java:123)
	com.opensymphony.xwork2.DefaultActionInvocation$2.doProfiling(DefaultActionInvocation.java:219)
	com.opensymphony.xwork2.DefaultActionInvocation$2.doProfiling(DefaultActionInvocation.java:218)
	com.opensymphony.xwork2.util.profiling.UtilTimerStack.profile(UtilTimerStack.java:455)
	com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:216)
	com.opensymphony.xwork2.interceptor.ExceptionMappingInterceptor.intercept(ExceptionMappingInterceptor.java:176)
	com.opensymphony.xwork2.DefaultActionInvocation$2.doProfiling(DefaultActionInvocation.java:219)
	com.opensymphony.xwork2.DefaultActionInvocation$2.doProfiling(DefaultActionInvocation.java:218)
	com.opensymphony.xwork2.util.profiling.UtilTimerStack.profile(UtilTimerStack.java:455)
	com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:216)
	org.apache.struts2.impl.StrutsActionProxy.execute(StrutsActionProxy.java:50)
	org.apache.struts2.dispatcher.Dispatcher.serviceAction(Dispatcher.java:507)
	org.apache.struts2.dispatcher.FilterDispatcher.doFilter(FilterDispatcher.java:421)

note The full stack trace of the root cause is available in the Apache Tomcat/5.5.26 logs.
wariows
wariows

o problema é no DAO.

mostra o código do DAO e o persistence.xml

euripedes_jr
euripedes_jr
persistence.xml
<?xml version="1.0" encoding="UTF-8"?>
<persistence version="1.0" xmlns="http://java.sun.com/xml/ns/persistence" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://java.sun.com/xml/ns/persistence http://java.sun.com/xml/ns/persistence/persistence_1_0.xsd">
	<persistence-unit name="estoque">

		<class>br.org.trisoft.vo.Cliente</class>
		<class>br.org.trisoft.vo.Estoque</class>
		<class>br.org.trisoft.vo.Fabricante</class>

		<properties>
		  <property name="toplink.logging.level" value="WARNING"/>
		  <property name="toplink.jdbc.driver" value="com.mysql.jdbc.Driver"/>
		  <property name="toplink.jdbc.url" value="jdbc:mysql://127.0.0.1:3306/sysestoque"/>
		  <property name="toplink.jdbc.user" value="root"/>
		  <property name="toplink.jdbc.password" value="inicial415263"/>
		</properties>
		
	</persistence-unit>
</persistence>
FabricanteDAO
package br.org.trisoft.persistence;

import java.util.List;

import br.org.trisoft.vo.Fabricante;

public interface FabricanteDAO {
	
	public List<Fabricante> getTodosFabricantes();

	public Fabricante getFabricante(Integer id, Fabricante fabricante);

	public void update(Fabricante fabricante);

	public void insert(Fabricante fabricante);

	public void delete(Integer id);
	
}
FabricanteJPADAO
package br.org.trisoft.persistence;

import java.util.ArrayList;
import java.util.List;

import javax.persistence.EntityManager;
import javax.persistence.EntityManagerFactory;
import javax.persistence.EntityTransaction;
import javax.persistence.Persistence;

import br.org.trisoft.vo.Fabricante;

public class FabricanteJPADAO implements FabricanteDAO {
	
	private EntityManagerFactory factory = null;

	private EntityManager manager = null;

	public FabricanteJPADAO() {

		factory = Persistence.createEntityManagerFactory("fabricante");
		manager = factory.createEntityManager();

	}
	
	public void delete(Integer userId) {
		EntityTransaction transaction = manager.getTransaction();

		try {

			transaction.begin();

			Fabricante fabricante = manager.find(Fabricante.class, userId);

			manager.remove(fabricante);

			transaction.commit();
			
		} catch (Exception e) {
			transaction.rollback();

			System.err.println("Erro: " + e.getMessage());
		} finally {
			manager.close();
		}	
	}

	public Fabricante getFabricante(Integer id, Fabricante fabricante) {
		EntityTransaction transaction = manager.getTransaction();

		Fabricante retorno = null;

		try {

			transaction.begin();

			retorno = (Fabricante) manager.find(Fabricante.class, id);
			
		} catch (Exception e) {
			transaction.rollback();

			System.err.println("Erro: " + e.getMessage());
		} finally {
			manager.close();
		}

		return retorno;
	}

	public List<Fabricante> getTodosFabricantes() {
		EntityTransaction transaction = manager.getTransaction();

		List<Fabricante> fabricante = new ArrayList<Fabricante>();

		try {

			transaction.begin();

			fabricante = manager.createNativeQuery("select * from 00_tb_fabricante",
					Fabricante.class).getResultList();

		} catch (Exception e) {
			transaction.rollback();

			System.err.println("Erro: " + e.getMessage());
		} finally {
			manager.close();
		}

		return fabricante;
	}

	public void insert(Fabricante fabricante) {
		EntityTransaction transaction = manager.getTransaction();

		try {
			transaction.begin();

			manager.persist(fabricante);

			transaction.commit();

		} catch (Exception e) {
			transaction.rollback();

			System.err.println("Erro: " + e.getMessage());

		} finally {
			manager.close();
		}
		
	}

	public void update(Fabricante fabricante) {
		EntityTransaction transaction = manager.getTransaction();
		Fabricante retorno = null;
		try {

			transaction.begin();
				
			retorno = manager.find(Fabricante.class, fabricante.getFabricanteId());
			retorno.setNomeFabricante(fabricante.getNomeFabricante());
					
			manager.merge(retorno);

     		transaction.commit();

		} catch (Exception e) {
			transaction.rollback();

			System.err.println("Erro: " + e.getMessage());
		} finally {
			manager.close();
		}
		
	}

}
wariows
wariows

cara você tá criando uma fabrica pelo identificador “fabricante” e só tem uma unidade chamada “estoque”…

pra criar o entitymanager vc precisa passar o nome de uma persistence unit valida

wariows
wariows

Tenta:

public FabricanteJPADAO() {  
   
         factory = Persistence.createEntityManagerFactory("estoque");  
         manager = factory.createEntityManager();  
   
}
euripedes_jr
euripedes_jr

ha entendi agora.

Alterei e deu certo.

Mas tipo como meu sistema vai ter varios modulos entao eu utilizo uma fabrica padrao pra todos tipo “” ou crio uma fabrica pra cada modulo?

wariows
wariows

se vc utilizar vários bancos, usa várias unidades…

normalmente eu uso uma unica unidade de persistencia…

euripedes_jr
euripedes_jr

ok , valeu muito obrigado pela ajuda!!!

t++
abraco.

Criado 17 de setembro de 2008
Ultima resposta 18 de set. de 2008
Respostas 11
Participantes 2

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