Hello:

I have a problem when call ejb 3.0,
I am use jboss-4.2.2.GA

My problem report is

2008-07-16 11:16:27,176 ERROR [org.apache.catalina.core.ContainerBase.[jboss.web].[localhost].[/appprueba].[ControlServlet]] Servlet.service() para servlet ControlServlet lanzó excepción
java.lang.NoSuchMethodError: model.CalculatorLocal.foo(Ljava/lang/String;)Ljava/lang/String;
at control.ControlServlet.doPost(ControlServlet.java:49)
at control.ControlServlet.doGet(ControlServlet.java:31)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:690)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:803)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
at org.jboss.web.tomcat.filters.ReplyHeaderFilter.doFilter(ReplyHeaderFilter.java:96)
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:230)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:175)
at org.jboss.web.tomcat.security.SecurityAssociationValve.invoke(SecurityAssociationValve.java:179)
at org.jboss.web.tomcat.security.JaccContextValve.invoke(JaccContextValve.java:84)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:127)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102)
at org.jboss.web.tomcat.service.jca.CachedConnectionValve.invoke(CachedConnectionValve.java:157)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:262)
at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:844)
at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:583)
at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:446)
at java.lang.Thread.run(Thread.java:595)

My ejb is

import javax.ejb.*;

import org.jboss.annotation.ejb.LocalBinding;
import org.jboss.annotation.ejb.RemoteBinding;

@Stateless
@Local ({CalculatorLocal.class})
@LocalBinding (jndiBinding="EJB3Trail/LocalCalculator")
@Remote ({Calculator.class})
@RemoteBinding (jndiBinding="EJB3Trail/RemoteCalculator")
public class CalculatorBean implements Calculator, CalculatorLocal {


public String foo(String param){
return "hola"+param;
}
}

My interface ejb local is


import javax.ejb.Local;

@Local
public interface CalculatorLocal {

String foo(String param);
}

My Servlet invoque ejb 3.0 is

import java.io.IOException;
import java.io.PrintWriter;

import javax.naming.InitialContext;

import javax.servlet.*;
import javax.servlet.http.*;

import model.CalculatorLocal;

public class ControlServlet extends HttpServlet {
private static final String CONTENT_TYPE = "text/html; charset=windows-1252";

public void doPost(HttpServletRequest request,
HttpServletResponse response) throws ServletException, IOException {response.setContentType(CONTENT_TYPE);
CalculatorLocal cal = null;
try {
InitialContext ctx = new InitialContext();
cal = (CalculatorLocal) ctx.lookup("EJB3Trail/LocalCalculator");
} catch (Exception e) {
e.printStackTrace ();
}

//Problem al invoque method
String msj = cal.foo("fred"); //The problem is here


PrintWriter out = response.getWriter();
out.println("");
out.println("ControlServlet");
out.println("");
out.println(""+msj+"");
out.println("");
out.close();
}
}