Struts2 (Exercicio Caelum)

[guilhecamilo]

Bom pessoal,
Estou tentando fazer o primeiro exercicio da Caelum de Struts2 e o tomcat só retorna 404 =/

Esta assim:

package br.com.caelum.tarefas.action;

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

public class OlaMundoAction {
@Action(value = “olaMundoStruts”, results = {
@Result(location = “olaMundoStruts.jsp”, name = “ok”) })
public String execute() {
System.out.println(“Executando a lógica com Struts2”);
return “ok”;
}
}

web.xml

<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>

olaMundoStruts.jsp

<%@ page language=“java” contentType=“text/html; charset=UTF-8”
pageEncoding=“UTF-8”%>

Insert title here

Olá mundo com Struts2!

Alguem consegue ver algo de errado?

[guilhecamilo]

Econtrei um erro no startup do tomcat

SEVERE: Exception starting filter struts2
java.lang.NoClassDefFoundError: org/apache/commons/lang/StringUtils
at com.opensymphony.xwork2.config.providers.XmlConfigurationProvider.register(XmlConfigurationProvider.java:198)
at org.apache.struts2.config.StrutsXmlConfigurationProvider.register(StrutsXmlConfigurationProvider.java:101)
at com.opensymphony.xwork2.config.impl.DefaultConfiguration.reloadContainer(DefaultConfiguration.java:180)
at com.opensymphony.xwork2.config.ConfigurationManager.getConfiguration(ConfigurationManager.java:66)
at org.apache.struts2.dispatcher.Dispatcher.init_PreloadConfiguration(Dispatcher.java:380)
at org.apache.struts2.dispatcher.Dispatcher.init(Dispatcher.java:424)
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.(ApplicationFilterConfig.java:115)
at org.apache.catalina.core.StandardContext.filterStart(StandardContext.java:4071)
at org.apache.catalina.core.StandardContext.start(StandardContext.java:4725)
at org.apache.catalina.core.ContainerBase.start(ContainerBase.java:1053)
at org.apache.catalina.core.StandardHost.start(StandardHost.java:840)
at org.apache.catalina.core.ContainerBase.start(ContainerBase.java:1053)
at org.apache.catalina.core.StandardEngine.start(StandardEngine.java:463)
at org.apache.catalina.core.StandardService.start(StandardService.java:525)
at org.apache.catalina.core.StandardServer.start(StandardServer.java:754)
at org.apache.catalina.startup.Catalina.start(Catalina.java:595)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:597)
at org.apache.catalina.startup.Bootstrap.start(Bootstrap.java:289)
at org.apache.catalina.startup.Bootstrap.main(Bootstrap.java:414)
Caused by: java.lang.ClassNotFoundException: org.apache.commons.lang.StringUtils
at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1680)
at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1526)
… 26 more
Jul 19, 2011 9:18:17 AM org.apache.catalina.core.StandardContext start
SEVERE: Error filterStart

[fabiozoroastro]

Olá guilhecamilo,

O erro ClassNotFound ocorre quando alguma classe tenta ser carregada mas não é encontrada.

Thrown when an application tries to load in a class through its

• string name using:
• The forName method in class Class.
• The findSystemClass method in class

• <code>ClassLoader</code> .
  

• The loadClass method in class ClassLoader.

but no definition for the class with the specified name could be found.

O erro ainda informa qual é a classe que está faltando no classpath da sua aplicação.
A classe não encontrada é a StringUtils que se encontra no JAR da commons-lang.

Adicione este JAR à sua aplicação e tente novamente.

Abraços.

[guilhecamilo]

Muito obrigado.
Funcionou, faltava essa classe e a asm.

[fabiozoroastro]