Struts 2 JSON double select

[Armando Da Costa Microsse]

Hi ppl..

I'm trying to run an example I took from the net using JSON. I am using Netbeans 6.9

I followed all the steps of the example, I put all plugin lib folder and everything, but when I run I catch this error:

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.addChildInternal(ContainerBase.java:791)
        at org.apache.catalina.core.ContainerBase.addChild(ContainerBase.java:771)
        at org.apache.catalina.core.StandardHost.addChild(StandardHost.java:546)
        at org.apache.catalina.startup.HostConfig.deployDescriptor(HostConfig.java:637)
        at org.apache.catalina.startup.HostConfig.deployApps(HostConfig.java:521)
        at org.apache.catalina.startup.HostConfig.check(HostConfig.java:1359)
        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.tomcat.util.modeler.BaseModelMBean.invoke(BaseModelMBean.java:297)
        at com.sun.jmx.interceptor.DefaultMBeanServerInterceptor.invoke(DefaultMBeanServerInterceptor.java:836)
        at com.sun.jmx.mbeanserver.JmxMBeanServer.invoke(JmxMBeanServer.java:761)
        at org.apache.catalina.manager.ManagerServlet.check(ManagerServlet.java:1500)
        at org.apache.catalina.manager.ManagerServlet.deploy(ManagerServlet.java:849)
        at org.apache.catalina.manager.ManagerServlet.doGet(ManagerServlet.java:351)
        at javax.servlet.http.HttpServlet.service(HttpServlet.java:617)
        at javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
        at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290)
        at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
        at org.netbeans.modules.web.monitor.server.MonitorFilter.doFilter(MonitorFilter.java:199)
        at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
        at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
        at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:233)
        at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:191)
        at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:558)
        at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:127)
        at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102)
        at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
        at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:298)
        at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:852)
        at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:588)
        at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:489)
        at java.lang.Thread.run(Thread.java:619)
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)
        ... 41 more
Caused by: The Result type [json] which is defined in the Result annotation on the class [class struts2.actions.JsonSample] or determined by the file extension or is the default result type for the PackageConfig of the action, could not be found as a result-type defined for the Struts/XWork package [struts2.actions#convention-default#] - [unknown location]
        at org.apache.struts2.convention.DefaultResultMapBuilder.createResultConfig(DefaultResultMapBuilder.java:422)
        at org.apache.struts2.convention.DefaultResultMapBuilder.createFromAnnotations(DefaultResultMapBuilder.java:394)
        at org.apache.struts2.convention.DefaultResultMapBuilder.build(DefaultResultMapBuilder.java:202)
        at org.apache.struts2.convention.PackageBasedActionConfigBuilder.createActionConfig(PackageBasedActionConfigBuilder.java:800)
        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)
        ... 43 more

Classe JsonSample.java

//imports
public class JsonSample extends ActionSupport{
    private List<ListValue> languageObjList;
    private List<String>        reloadList;
    private String              language;


   
    @Override
     @Actions(value = {
        @Action(value = "/jsonsample", results = {
            @Result(name = "success", type = "json")})})
    public String execute() throws Exception {

      languageObjList = new ArrayList<ListValue>();
    
      languageObjList.add(new ListValue("J", "Java"));
      languageObjList.add(new ListValue("P", "PHP"));
      languageObjList.add(new ListValue("C", "C#"));

    reloadList = new ArrayList<String>();
    if (language != null && language.equalsIgnoreCase("J"))
    {
      reloadList.add("Struts2");
      reloadList.add("MyFaces");
      reloadList.add("Tapestry");
    }
    else if (language != null && language.equalsIgnoreCase("P"))
    {
      reloadList.add("CakePHP");
      reloadList.add("Symfony");
      reloadList.add("Zend");
    }
    else if (language != null && language.equalsIgnoreCase("C"))
    {
      reloadList.add("NStruts");
      reloadList.add("ProMesh.NET");
      reloadList.add("Websharp");
    }

      return "success";
    }
//getters e setters

index.jsp

<%@taglib prefix="s" uri="/struts-tags"%>
<%@taglib prefix="sj" uri="/struts-jquery-tags" %>
<%@page contentType="text/html" pageEncoding="UTF-8"%>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"
   "http://www.w3.org/TR/html4/loose.dtd">

<html>
    <head>
        <meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
        <title>JSP Page</title>
    </head>
    <body>
       <s:form id="formSelectReload" theme="simple" cssClass="yform">
    <fieldset>
        <legend>AJAX Form</legend>
        <div class="type-text">
            <label for="language">Language: </label>
                        <s:url id="remoteurl" action="/jsonsample"/>
                        <sj:select
                                href="%{remoteurl}"
                                id="language"
                                onChangeTopics="reloadsecondlist"
                                name="language"
                                list=" languageObjList"
                                listKey="myKey"
                                listValue="myValue"
                                emptyOption="false"
                                headerKey="-1"
                                headerValue="Please Select a Language"/>
        </div>
        <div class="type-text">
            <label for="echo">Framework: </label>
                        <sj:select
                                href="%{remoteurl}"
                                id="selectWithReloadTopic"
                                formIds="formSelectReload"
                                reloadTopics="reloadsecondlist"
                                name="echo"
                                list="reloadList"
                                emptyOption="false"
                                headerKey="-1"
                                headerValue="Please Select a Framework"/>
        </div>
        <div class="type-button">
                        <sj:submit
                                targets="result"
                                value="AJAX Submit"
                                indicator="indicator"/>
                        <img id="indicator" src="images/loading.gif" alt="Loading..." style="display:none"/>
        </div>
    </fieldset>
</s:form>
    </body>
</html>

Struts.xml
<!DOCTYPE struts PUBLIC "-//Apache Software Foundation//DTD Struts Configuration 2.0//EN" "http://struts.apache.org/dtds/struts-2.0.dtd"> <struts> <!-- Configuration for the default package. --> <package name="default" extends="struts-default,json-default" namespace="/"> </package> </struts>

Any help...