Hello everyone!

I am working on a Seam project (Seam 2.1.2) into which I need to integrate Facebook connect and by-pass the current registration process when uses are logged in through facebook connect. 

I don't want to use the javascript api provided by Facebook, but would like to send and get response through the HTTP object and thus handle the request through Java nstead of javascript.

I am currently using the facebook-java-api-3.0.1.jar

I wrote the following :

package com.testntrust.actions.registration;

import java.io.IOException;

import javax.faces.context.FacesContext;
import javax.interceptor.Interceptors;
import javax.servlet.FilterChain;
import javax.servlet.ServletException;
import javax.servlet.ServletRequest;
import javax.servlet.ServletResponse;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpSession;

import org.apache.log4j.Logger;
import org.jboss.seam.ScopeType;
import org.jboss.seam.annotations.Create;
import org.jboss.seam.annotations.In;
import org.jboss.seam.annotations.Name;
import org.jboss.seam.annotations.Scope;
import org.jboss.seam.ejb.SeamInterceptor;

import com.google.code.facebookapi.FacebookParam;
import com.google.code.facebookapi.FacebookXmlRestClient;

@Scope(ScopeType.EVENT)
@Interceptors(SeamInterceptor.class)
@Name("facebookUserFilter")
public class FacebookUserFilter {

     private final String secret = "e03ae7ac59932b91d7663dc9bf9aa9e7";
     private final String apiKey ="d02ce85f646e19d83a63b2af0fa190a6";

     private static Logger log;

     @In
     private FacesContext facesContext;

     private HttpServletRequest request;

     @Create
     public void setup() {
          request = (HttpServletRequest) facesContext.getExternalContext().getRequest();
     }


     public String loadUserJAAS()
     {
          HttpSession session = request.getSession();
          FacebookXmlRestClient client = (FacebookXmlRestClient) session
          .getAttribute("facebookClient");
          if (client == null)
          {
               String sessionKey = request
               .getParameter(FacebookParam.SESSION_KEY.toString());
               String authToken = request.getParameter("auth_token");
               if (sessionKey == null && authToken == null)
               {
                    //response.sendRedirect(loginPage);
                    return "ok";
               }
               else
               {
                    try
                    {

                         if (sessionKey != null)
                         {
                              client = new FacebookXmlRestClient(apiKey, secret,
                                        sessionKey);
                         }
                         else
                         {
                              client = new FacebookXmlRestClient(apiKey, secret);
                              client.auth_getSession(authToken);
                         }
                         //   client.setIsDesktop(false);
                         session.setAttribute("facebookClient", client);
                    }
                    catch (Exception fe)
                    {
                         log.error("Unable to log into facebook", fe);
                    }
               }
          }
          return "ok2";
     }




}

accessed the method thus:

<h:outputText value="#{facebookUserFilter.loadUserJAAS()}" />

but am getting classloaders exception:

Caused by: javax.el.ELException: /connexion.xhtml @107,67 value="#{facebookUserFilter.loadUserJAAS()}": java.lang.reflect.InvocationTargetException
     at com.sun.facelets.el.TagValueExpression.getValue(TagValueExpression.java:76)
     at javax.faces.component.UIOutput.getValue(UIOutput.java:173)
     ... 68 more
Caused by: java.lang.reflect.InvocationTargetException
     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.jboss.seam.util.Reflections.invoke(Reflections.java:22)
     at org.jboss.seam.intercept.RootInvocationContext.proceed(RootInvocationContext.java:32)
     at org.jboss.seam.intercept.SeamInvocationContext.proceed(SeamInvocationContext.java:56)
     at org.jboss.seam.transaction.RollbackInterceptor.aroundInvoke(RollbackInterceptor.java:28)
     at org.jboss.seam.intercept.SeamInvocationContext.proceed(SeamInvocationContext.java:68)
     at org.jboss.seam.core.BijectionInterceptor.aroundInvoke(BijectionInterceptor.java:77)
     at org.jboss.seam.intercept.SeamInvocationContext.proceed(SeamInvocationContext.java:68)
     at org.jboss.seam.bpm.BusinessProcessInterceptor.aroundInvoke(BusinessProcessInterceptor.java:51)
     at org.jboss.seam.intercept.SeamInvocationContext.proceed(SeamInvocationContext.java:68)
     at org.jboss.seam.core.MethodContextInterceptor.aroundInvoke(MethodContextInterceptor.java:44)
     at org.jboss.seam.intercept.SeamInvocationContext.proceed(SeamInvocationContext.java:68)
     at org.jboss.seam.intercept.RootInterceptor.invoke(RootInterceptor.java:107)
     at org.jboss.seam.intercept.JavaBeanInterceptor.interceptInvocation(JavaBeanInterceptor.java:185)
     at org.jboss.seam.intercept.JavaBeanInterceptor.invoke(JavaBeanInterceptor.java:103)
     at com.testntrust.actions.registration.FacebookUserFilter_$$_javassist_seam_15.loadUserJAAS(FacebookUserFilter_$$_javassist_seam_15.java)
     at sun.reflect.NativeMet
10:01:25,041 ERROR [STDERR] hodAccessorImpl.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.jboss.el.util.ReflectionUtil.invokeMethod(ReflectionUtil.java:335)
     at org.jboss.el.util.ReflectionUtil.invokeMethod(ReflectionUtil.java:280)
     at org.jboss.el.parser.AstMethodSuffix.getValue(AstMethodSuffix.java:59)
     at org.jboss.el.parser.AstValue.getValue(AstValue.java:67)
     at org.jboss.el.ValueExpressionImpl.getValue(ValueExpressionImpl.java:186)
     at com.sun.facelets.el.TagValueExpression.getValue(TagValueExpression.java:71)
     ... 69 more
Caused by: java.lang.NoClassDefFoundError: com/google/code/facebookapi/FacebookParam
     at com.testntrust.actions.registration.FacebookUserFilter.loadUserJAAS(FacebookUserFilter.java:106)
     ... 98 more
Caused by: java.lang.ClassNotFoundException: No ClassLoaders found for: com.google.code.facebookapi.FacebookParam
     at org.jboss.mx.loading.LoadMgr3.beginLoadTask(LoadMgr3.java:306)
     at org.jboss.mx.loading.RepositoryClassLoader.loadClassImpl(RepositoryClassLoader.java:521)
     at org.jboss.mx.loading.RepositoryClassLoader.loadClass(RepositoryClassLoader.java:415)
     at java.lang.ClassLoader.loadClass(ClassLoader.java:252)
     at java.lang.ClassLoader.loadClassInternal(ClassLoader.java:320)
     ... 99 more

I would like to know which api should I use for this purpose in seam. Are there any example which I can follow for the integration of seam and facebook connect.

Any help would be highly appreciated

Rgds
Neerou