[RESOLVIDO] - Apostila Caelum FJ21 - Exercício 12.8 Interceptor

1 de julho de 2010 5 respostas

calel 1 de julho de 2010

Estou com problemas nesse exercício. Parece que o tomcat não encontra o arquivo struts.xml no meu projeto. Tentei colocar o struts.xml junto com o arquivo web.xml e depois li que o local correto seria na raiz dos pacotes de classes, no diretório src mas o erro não mudou.
Senti falta da definição da localização do struts.xml que faziamos no Struts 1 dentro do arquivo web.xml, não sei se é esse o problema...

web.xml

<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://java.sun.com/xml/ns/javaee" xmlns:web="http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd" xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd" id="WebApp_ID" version="2.5">

  <filter>
    <filter-name>struts2</filter-name>
    <filter-class>org.apache.struts2.dispatcher.ng.filter.StrutsPrepareAndExecuteFilter</filter-class>
  </filter>
  
  <filter-mapping>
    <filter-name>struts2</filter-name>
    <url-pattern>/*</url-pattern>
  </filter-mapping>
 
  <session-config>
  	<session-timeout>15</session-timeout>
  </session-config>
  
  
  <display-name>fj21-tarefas</display-name>
  <welcome-file-list>
    <welcome-file>login.jsp</welcome-file>
  </welcome-file-list>
</web-app>

Struts.xml

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE struts PUBLIC
    "-//Apache Software Foundation//DTD Struts Configuration 2.1.7//EN"
    "http://struts.apache.org/dtds/struts-2.1.7.dtd">
<struts>
	<package name="default" extends="convention-default">
		<interceptors>
			<interceptor name="login" 
					class="tarefas.interceptor.LoginInterceptor"></interceptor>
		</interceptors>
		
		<global-results>
			<result name="naoLogado">/login.jsp</result>
		</global-results>
	</package>
</struts>

A classe interceptor:

package tarefas.interceptor;

import tarefas.modelo.Usuario;

import com.opensymphony.xwork2.ActionInvocation;
import com.opensymphony.xwork2.interceptor.Interceptor;

public class LoginInterceptor implements Interceptor {

	@Override
	public String intercept(ActionInvocation invocation) throws Exception {
		Usuario usuarioLogado = (Usuario) invocation.getInvocationContext().
							getSession().get("usuarioLogado");
		if(usuarioLogado == null){
			return "naoLogado";
		}else{
			return invocation.invoke();
		}
	}

	public void destroy() {	}
	public void init() {}
}

Erro ao iniciar o tomcat:

01/07/2010 13:26:59 org.apache.catalina.core.AprLifecycleListener init
INFO: The APR based Apache Tomcat Native library which allows optimal performance in production environments was not found on the java.library.path: C:\Arquivos de programas\Java\jre6\bin;.;C:\WINDOWS\Sun\Java\bin;C:\WINDOWS\system32;C:\WINDOWS;C:/Arquivos de programas/Java/jre6/bin/client;C:/Arquivos de programas/Java/jre6/bin;C:\Inprise\vbroker\bin;C:\Arquivos de programas\Borland\Delphi7\Bin;C:\Arquivos de programas\Borland\Delphi7\Projects\Bpl\;C:\Arquivos de programas\PC Connectivity Solution\;C:\WINDOWS\system32;C:\WINDOWS;C:\WINDOWS\System32\Wbem;.;C:\Arquivos de programas\Java\jdk1.6.0_07\bin;C:\Arquivos de programas\Microsoft SQL Server\90\Tools\binn\;C:\Arquivos de programas\TortoiseSVN\bin;C:\maven\bin;C:\Arquivos de programas\Smart Projects\IsoBuster;C:\Arquivos de programas\Notepad++;C:\MinGW\bin;C:\Arquivos de programas\MySQL\MySQL Server 5.1\bin
01/07/2010 13:27:00 org.apache.tomcat.util.digester.SetPropertiesRule begin
WARNING: [SetPropertiesRule]{Server/Service/Engine/Host/Context} Setting property 'source' to 'org.eclipse.jst.jee.server:fj21-tarefas' did not find a matching property.
01/07/2010 13:27:00 org.apache.coyote.http11.Http11Protocol init
INFO: Initializing Coyote HTTP/1.1 on http-8080
01/07/2010 13:27:00 org.apache.catalina.startup.Catalina load
INFO: Initialization processed in 621 ms
01/07/2010 13:27:00 org.apache.catalina.core.StandardService start
INFO: Starting service Catalina
01/07/2010 13:27:00 org.apache.catalina.core.StandardEngine start
INFO: Starting Servlet Engine: Apache Tomcat/6.0.26
01/07/2010 13:27:01 com.opensymphony.xwork2.util.logging.jdk.JdkLogger info
INFO: Parsing configuration file [struts-default.xml]
01/07/2010 13:27:01 com.opensymphony.xwork2.util.logging.jdk.JdkLogger info
INFO: Parsing configuration file [struts-plugin.xml]
01/07/2010 13:27:01 com.opensymphony.xwork2.util.logging.jdk.JdkLogger info
INFO: Unable to locate configuration files of the name struts.xml, skipping
01/07/2010 13:27:01 com.opensymphony.xwork2.util.logging.jdk.JdkLogger info
INFO: Parsing configuration file [struts.xml]
01/07/2010 13:27:02 com.opensymphony.xwork2.util.logging.jdk.JdkLogger error
SEVERE: Dispatcher initialization failed
Unable to load configuration. - [unknown location]
	at com.opensymphony.xwork2.config.ConfigurationManager.getConfiguration(ConfigurationManager.java:58)
	at org.apache.struts2.dispatcher.Dispatcher.init_PreloadConfiguration(Dispatcher.java:374)
	at org.apache.struts2.dispatcher.Dispatcher.init(Dispatcher.java:418)
	at org.apache.struts2.dispatcher.ng.InitOperations.initDispatcher(InitOperations.java:69)
	at org.apache.struts2.dispatcher.ng.filter.StrutsPrepareAndExecuteFilter.init(StrutsPrepareAndExecuteFilter.java:51)
	at org.apache.catalina.core.ApplicationFilterConfig.getFilter(ApplicationFilterConfig.java:295)
	at org.apache.catalina.core.ApplicationFilterConfig.setFilterDef(ApplicationFilterConfig.java:422)
	at org.apache.catalina.core.ApplicationFilterConfig.<init>(ApplicationFilterConfig.java:115)
	at org.apache.catalina.core.StandardContext.filterStart(StandardContext.java:3838)
	at org.apache.catalina.core.StandardContext.start(StandardContext.java:4488)
	at org.apache.catalina.core.ContainerBase.start(ContainerBase.java:1045)
	at org.apache.catalina.core.StandardHost.start(StandardHost.java:785)
	at org.apache.catalina.core.ContainerBase.start(ContainerBase.java:1045)
	at org.apache.catalina.core.StandardEngine.start(StandardEngine.java:443)
	at org.apache.catalina.core.StandardService.start(StandardService.java:519)
	at org.apache.catalina.core.StandardServer.start(StandardServer.java:710)
	at org.apache.catalina.startup.Catalina.start(Catalina.java:581)
	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.catalina.startup.Bootstrap.start(Bootstrap.java:289)
	at org.apache.catalina.startup.Bootstrap.main(Bootstrap.java:414)
Caused by: Unable to find interceptor class referenced by ref-name login - [unknown location]
	at com.opensymphony.xwork2.config.providers.InterceptorBuilder.constructInterceptorReference(InterceptorBuilder.java:52)
	at org.apache.struts2.convention.DefaultInterceptorMapBuilder.buildInterceptorList(DefaultInterceptorMapBuilder.java:99)
	at org.apache.struts2.convention.DefaultInterceptorMapBuilder.build(DefaultInterceptorMapBuilder.java:90)
	at org.apache.struts2.convention.DefaultInterceptorMapBuilder.build(DefaultInterceptorMapBuilder.java:74)
	at org.apache.struts2.convention.PackageBasedActionConfigBuilder.createActionConfig(PackageBasedActionConfigBuilder.java:796)
	at org.apache.struts2.convention.PackageBasedActionConfigBuilder.buildConfiguration(PackageBasedActionConfigBuilder.java:586)
	at org.apache.struts2.convention.PackageBasedActionConfigBuilder.buildActionConfigs(PackageBasedActionConfigBuilder.java:318)
	at org.apache.struts2.convention.ClasspathPackageProvider.loadPackages(ClasspathPackageProvider.java:53)
	at com.opensymphony.xwork2.config.impl.DefaultConfiguration.reloadContainer(DefaultConfiguration.java:204)
	at com.opensymphony.xwork2.config.ConfigurationManager.getConfiguration(ConfigurationManager.java:55)
	... 22 more
01/07/2010 13:27:02 org.apache.catalina.core.StandardContext filterStart
SEVERE: Exception starting filter struts2
Unable to load configuration. - [unknown location]
	at org.apache.struts2.dispatcher.Dispatcher.init(Dispatcher.java:431)
	at org.apache.struts2.dispatcher.ng.InitOperations.initDispatcher(InitOperations.java:69)
	at org.apache.struts2.dispatcher.ng.filter.StrutsPrepareAndExecuteFilter.init(StrutsPrepareAndExecuteFilter.java:51)
	at org.apache.catalina.core.ApplicationFilterConfig.getFilter(ApplicationFilterConfig.java:295)
	at org.apache.catalina.core.ApplicationFilterConfig.setFilterDef(ApplicationFilterConfig.java:422)
	at org.apache.catalina.core.ApplicationFilterConfig.<init>(ApplicationFilterConfig.java:115)
	at org.apache.catalina.core.StandardContext.filterStart(StandardContext.java:3838)
	at org.apache.catalina.core.StandardContext.start(StandardContext.java:4488)
	at org.apache.catalina.core.ContainerBase.start(ContainerBase.java:1045)
	at org.apache.catalina.core.StandardHost.start(StandardHost.java:785)
	at org.apache.catalina.core.ContainerBase.start(ContainerBase.java:1045)
	at org.apache.catalina.core.StandardEngine.start(StandardEngine.java:443)
	at org.apache.catalina.core.StandardService.start(StandardService.java:519)
	at org.apache.catalina.core.StandardServer.start(StandardServer.java:710)
	at org.apache.catalina.startup.Catalina.start(Catalina.java:581)
	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.catalina.startup.Bootstrap.start(Bootstrap.java:289)
	at org.apache.catalina.startup.Bootstrap.main(Bootstrap.java:414)
Caused by: Unable to load configuration. - [unknown location]
	at com.opensymphony.xwork2.config.ConfigurationManager.getConfiguration(ConfigurationManager.java:58)
	at org.apache.struts2.dispatcher.Dispatcher.init_PreloadConfiguration(Dispatcher.java:374)
	at org.apache.struts2.dispatcher.Dispatcher.init(Dispatcher.java:418)
	... 20 more
Caused by: Unable to find interceptor class referenced by ref-name login - [unknown location]
	at com.opensymphony.xwork2.config.providers.InterceptorBuilder.constructInterceptorReference(InterceptorBuilder.java:52)
	at org.apache.struts2.convention.DefaultInterceptorMapBuilder.buildInterceptorList(DefaultInterceptorMapBuilder.java:99)
	at org.apache.struts2.convention.DefaultInterceptorMapBuilder.build(DefaultInterceptorMapBuilder.java:90)
	at org.apache.struts2.convention.DefaultInterceptorMapBuilder.build(DefaultInterceptorMapBuilder.java:74)
	at org.apache.struts2.convention.PackageBasedActionConfigBuilder.createActionConfig(PackageBasedActionConfigBuilder.java:796)
	at org.apache.struts2.convention.PackageBasedActionConfigBuilder.buildConfiguration(PackageBasedActionConfigBuilder.java:586)
	at org.apache.struts2.convention.PackageBasedActionConfigBuilder.buildActionConfigs(PackageBasedActionConfigBuilder.java:318)
	at org.apache.struts2.convention.ClasspathPackageProvider.loadPackages(ClasspathPackageProvider.java:53)
	at com.opensymphony.xwork2.config.impl.DefaultConfiguration.reloadContainer(DefaultConfiguration.java:204)
	at com.opensymphony.xwork2.config.ConfigurationManager.getConfiguration(ConfigurationManager.java:55)
	... 22 more
01/07/2010 13:27:02 org.apache.catalina.core.StandardContext start
SEVERE: Error filterStart
01/07/2010 13:27:02 org.apache.catalina.core.StandardContext start
SEVERE: Context [/fj21-tarefas] startup failed due to previous errors
01/07/2010 13:27:02 org.apache.catalina.loader.WebappClassLoader clearThreadLocalMap
SEVERE: A web application created a ThreadLocal with key of type [null] (value [com.opensymphony.xwork2.inject.ContainerImpl$10@1fe571f]) and a value of type [java.lang.Object[]] (value [[Ljava.lang.Object;@109ea96]) but failed to remove it when the web application was stopped. To prevent a memory leak, the ThreadLocal has been forcibly removed.
01/07/2010 13:27:02 org.apache.catalina.loader.WebappClassLoader clearThreadLocalMap
SEVERE: A web application created a ThreadLocal with key of type [null] (value [com.opensymphony.xwork2.inject.ContainerImpl$10@83b1b]) and a value of type [java.lang.Object[]] (value [[Ljava.lang.Object;@608760]) but failed to remove it when the web application was stopped. To prevent a memory leak, the ThreadLocal has been forcibly removed.

5 Respostas

Oenning 1 de jul. de 2010

Tenta assim:

<package ...>
<interceptors>
	        <interceptor name="login" class="tarefas.interceptor.LoginInterceptor"/>
	     
	        <interceptor-stack name="myStack">
	        	<interceptor-ref name="login"/>
	        	<interceptor-ref name="defaultStack"/>
	        </interceptor-stack>
    	</interceptors>
	     
	    <default-interceptor-ref name="myStack" />
</package>

calel 2 de jul. de 2010

Acabei de descobrir que o problema estava na importação do da anotation @ParentPackage, havia importado do org.apache.struts2.config.ParentPackage, resolveu quando troquei para o org.apache.struts2.convention.annotation.ParentPackage. Isso na classe que se utilizava do Interceptor, não havia postado o código dela, mas segue abaixo pra quem tiver a mesma dúvida.

Outra coisa, se você quiser passar parametros para uma action e usar o Interceptor é essencial usar a dica do Oenning, sem o defaultStack os parametros não chegam na Action, valew a dica, ia me bater um bom tempo pra descobrir isso XD

package tarefas.action;

import java.util.List;

import org.apache.struts2.convention.annotation.ParentPackage;
import org.apache.struts2.convention.annotation.Action;
import org.apache.struts2.convention.annotation.InterceptorRef;
import org.apache.struts2.convention.annotation.Result;

import tarefas.dao.TarefaDAO;
import tarefas.modelo.Tarefa;
@ParentPackage("default")
public class ListaTarefasAction {
	private List<Tarefa> tarefas;
	
	@Action(value="listaTarefas", results={
		@Result(name="ok", location="/lista-tarefas.jsp")}, 
		interceptorRefs={@InterceptorRef("login")})
	public String executa(){
		tarefas = new TarefaDAO().lista();
		return "ok";
	}

	public List<Tarefa> getTarefas() {
		return tarefas;
	}
}

fabioebner 4 de jul. de 2010

Amigo, estou com o mesmo problema, eu tenho 2 interceptor, entao o meu struts esta assim:

<!DOCTYPE struts PUBLIC
"-//Apache Software Foundation//DTD Struts Configuration 2.0//EN"
"http://struts.apache.org/dtds/struts-2.0.dtd">

<struts>
	<package name="loginUsuario" extends="struts-default">
		<interceptors>
			<interceptor name="loginUsuario" class="br.com.dnasolution.site.interceptor.LoginUsuarioInterceptor"></interceptor>
		</interceptors>	
		<global-results>
			<result name="clienteNaoLogado">/jsp/usuario/loginUsuario.jsp</result>
		</global-results>
	</package>
	<package name="loginCliente" extends="loginUsuario">
		<interceptors>
			<interceptor name="loginCliente" class="br.com.dnasolution.site.interceptor.LoginClienteInterceptor"></interceptor> 									
		</interceptors>

		<global-results>
			<result name="clienteNaoLogado">/jsp/cliente/loginCliente.jsp</result>
		</global-results>
	</package>
	<package name="loginClienteAndUsuario" extends="loginCliente">
		<interceptors>
			<interceptor-stack name="myStack">  
				<interceptor-ref name="loginCliente"/>
				<interceptor-ref name="loginUsuario"/>  
			</interceptor-stack>	
		</interceptors>
		<default-interceptor-ref name="myStack" />
	</package>

</struts>

tentei colocar o um para cada e tentei dessa forma, colocar no ultimo porem nao consegui,

eu fiz o ultimo package pois tenho dois logins em uma mesma action, por isso na minha action eu estendo o loginClienteAndUsuario e posso utilizar qualquer um dos dois, porem nao consegui utilizar o stack, continua dando erro..

alguem me ajude por favor

calel 4 de jul. de 2010

Se for aquele problema que vc comentou no seu outro post dos valores virem nulos, eu resolvi algo similar com a dica do Oenning acima, acrescentando no meu interceptor-stack a linha <interceptor-ref name="defaultStack"/> . Mas se o seu problema for outro eu não vou saber ajudar pq estou aprendendo struts 2 agora =/

fabioebner 5 de jul. de 2010

Entao cara o problema e o mesmo, porem nao consegui, coloquei igual ae no post, porem nada :(

Deixei ate mais claro olha so como ficou:

<!DOCTYPE struts PUBLIC "-//Apache Software Foundation//DTD Struts Configuration 2.0//EN" "http://struts.apache.org/dtds/struts-2.0.dtd"><struts>
	<package name="loginClienteAndUsuario"
			 extends="struts-default">
		<interceptors>
			<interceptor name="loginUsuario"
						 class="br.com.dnasolution.site.interceptor.LoginUsuarioInterceptor">
			</interceptor>
			<interceptor name="loginCliente"
						 class="br.com.dnasolution.site.interceptor.LoginClienteInterceptor">
			</interceptor>
			<interceptor-stack name="myStack">
				<interceptor-ref name="loginCliente"/>
				<interceptor-ref name="loginUsuario"/>
				<interceptor-ref name="defaultStack"/>
			</interceptor-stack>
		</interceptors>
		<default-interceptor-ref name="myStack"/>
		<global-results>
			<result name="clienteNaoLogado">/jsp/usuario/loginUsuario.jsp</result>
			<result name="clienteNaoLogado">/jsp/cliente/loginCliente.jsp</result>
		</global-results>

	</package>
</struts>

e continua dando o mesmo erro.. alguem?

Criado 1 de julho de 2010

Ultima resposta 5 de jul. de 2010

Respostas 5

Participantes 3

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