o bean staeless ta agindo como stateful, pq sera os arquivos relevantes seguem a seguir:
HELLOBEAN.JAVA
package examples;
import javax.ejb.SessionContext;
/**
- Demonstration stateless session bean.
*/
public class HelloBean implements javax.ejb.SessionBean {
int contador;
SessionContext sc;
public void setSessionContext(SessionContext ctx) {
sc = ctx;
}
public void ejbCreate() {
System.out.println(“ejbCreate()”);
contador = 0;
}
public void ejbRemove() {
System.out.println(“ejbRemove()”);
}
public void ejbActivate() {
System.out.println(“ejbActivate()”);
}
public void ejbPassivate() {
System.out.println(“ejbPassivate()”);
}
//
// Business methods
//
public int hello() {
return ++contador;
}
}
CONTADORBEAN.JAVA
/*
- Created on 29/11/2004
- TODO To change the template for this generated file go to
- Window - Preferences - Java - Code Style - Code Templates
*/
package examples;
import java.rmi.RemoteException;
import javax.ejb.EJBException;
import javax.ejb.SessionBean;
import javax.ejb.SessionContext;
/**
- @author monster
- TODO To change the template for this generated type comment go to
- Window - Preferences - Java - Code Style - Code Templates
*/
public class ContadorBean implements SessionBean{
int contador;
SessionContext sc;
/** O método ejbCreate() será chamado quando for solicitado
- o método create na interface Home.
**/
public void ejbCreate() {
contador = 0;
}
/** O método ejbCreate(int) será chamado quando for solicitado
- o método create(int) na interface Home.
**/
public void ejbCreate(int i) {
contador = i;
}
/* (non-Javadoc)
-
@see javax.ejb.SessionBean#ejbActivate()
*/
public void ejbActivate() throws EJBException, RemoteException {
System.out.println(“Ativando componente”);
}
/* (non-Javadoc)
-
@see javax.ejb.SessionBean#ejbPassivate()
*/
public void ejbPassivate() throws EJBException, RemoteException {
System.out.println(“desAtivando componente”);
}
/* (non-Javadoc)
-
@see javax.ejb.SessionBean#ejbRemove()
*/
public void ejbRemove() throws EJBException, RemoteException {
System.out.println(“removendo componente”);
}
/* (non-Javadoc)
-
@see javax.ejb.SessionBean#setSessionContext(javax.ejb.SessionContext)
/
public void setSessionContext(SessionContext sessionContext) throws EJBException, RemoteException {
System.out.println(“setando o contexto”);
sc = sessionContext;
}
/ Implementação do método da interface Remota */
public int getCount() {
return ++contador;
}
}
EJB-JAR.XML
<!DOCTYPE ejb-jar PUBLIC
“-//Sun Microsystems, Inc.//DTD Enterprise JavaBeans 2.0//EN”
“<a href="http://java.sun.com/dtd/ejb-jar_2_0.dtd">http://java.sun.com/dtd/ejb-jar_2_0.dtd</a>”>
<ejb-jar>
<enterprise-beans>
<session>
<ejb-name>Hello</ejb-name>
<home>examples.HelloHome</home>
<remote>examples.Hello</remote>
<local-home>examples.HelloLocalHome</local-home>
<local>examples.HelloLocal</local>
<ejb-class>examples.HelloBean</ejb-class>
<session-type>Stateles</session-type>
<transaction-type>Container</transaction-type>
</session>
<session>
<display-name>ContadorBean</display-name>
<ejb-name>ContadorBean</ejb-name>
<home>examples.ContadorHome</home>
<remote>examples.Contador</remote>
<ejb-class>examples.ContadorBean</ejb-class>
<session-type>Stateful</session-type>
<transaction-type>Container</transaction-type>
</session>
</enterprise-beans>
</ejb-jar>
CLIENTJSP.JSP
<%@ page import=“javax.naming.InitialContext,
javax.naming.Context,
java.util.Properties,
examples.*”%>
<%
Properties props = new Properties();
props.put(Context.INITIAL_CONTEXT_FACTORY,“org.jnp.interfaces.NamingContextFact ory”);
props.put(Context.PROVIDER_URL, “localhost:1000”);
Context ctx = new InitialContext(props);
HelloHome home = (HelloHome)ctx.lookup(“stateless”);
Hello bean = home.create();
int str = bean.hello();
bean.remove();
ContadorHome home2 = (ContadorHome)ctx.lookup(“statefull”);
Contador bean2 = home2.create();
int count = bean2.getCount();
bean2.remove();
ctx.close();
%>
.<hatml>
.<haead>
.<satyle>p { font-family:Verdana;font-size:12px; }</satyle>
.</haead>
.<baody>
.<pa>stateless = “<%= str %>”.<bra></pa> ----> its always incrementing on refresh
.<pa>stateful = “<%= count %>”.<bra></pa> -----> never incremented on refresh
.</boady>
.</htaml>
exemplo:
stateless 1
stateful 1
stateless 2
stateful 1
os as entre as tag html e pra poder postar ignore-os
