无法使用客户端类在同一台计算机上调用ejb

Question

package com.brainysoftware.ejb;

import java.rmi.RemoteException;

import javax.ejb.EJBObject;

public interface Adder extends EJBObject{
    public int add(int a,int b) throws RemoteException;

}

package com.brainysoftware.ejb;

import java.rmi.RemoteException;

import javax.ejb.EJBException;
import javax.ejb.SessionBean;
import javax.ejb.SessionContext;

public class AdderBean implements SessionBean{
    public int add(int a, int b){
        System.out.println("From AdderBean");
        return (a+b);
    }

    @Override
    public void ejbActivate() throws EJBException, RemoteException {
        // TODO Auto-generated method stub

    }

    @Override
    public void ejbPassivate() throws EJBException, RemoteException {
        // TODO Auto-generated method stub

    }

    @Override
    public void ejbRemove() throws EJBException, RemoteException {
        // TODO Auto-generated method stub

    }

    @Override
    public void setSessionContext(SessionContext arg0) throws EJBException,
            RemoteException {
        // TODO Auto-generated method stub

    }
}

package com.brainysoftware.ejb;

import java.rmi.RemoteException;
import javax.ejb.CreateException;
import javax.ejb.EJBHome;

public interface AdderHome  extends EJBHome{
    Adder create() throws RemoteException, CreateException;
}

<?xml version="1.0" encoding="UTF-8"?>
<ejb-jar version="3.1" xmlns="http://java.sun.com/xml/ns/javaee" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/ejb-jar_3_1.xsd">
  <description>Your first EJB application</description>
    <display-name>Adder Application</display-name>
    <enterprise-beans>
     <session>
      <ejb-name>Adder</ejb-name>
      <home>com.brainysoftware.ejb.AdderHome</home>
      <remote>com.brainysoftware.ejb.Adder</remote>
      <ejb-class>com.brainysoftware.ejb.AdderBean</ejb-class>
      <session-type>Stateless</session-type>
      <transaction-type>Bean</transaction-type>
     </session>
    </enterprise-beans> 
 </ejb-jar> 

导入java.rmi.RemoteException；导入java.util.properties；导入javax.ejb.createException；导入javax.naming.context；导入javax.naming.InitialContext；导入javax.naming.namingException；导入com.brainysoftware.ejb.adder；导入com.brainysoftware.ejb.AdderHome；导入javax.rmi.PortableRemoteObject；

公共类BeanClient{public static void main(String[]args){Properties props=new Properties（）；props.put(context.initial_context_factory,“org.jnp.interfactory”）；props.put(context.provider_url,“localhost：1099”）；try{InitialContext jnic=new InitialContext（props）；system.out.println（“获取上下文”）；Object ref=jnic.lookup（“Adder”）；

在eclipse中执行该类时，我得到以下错误：

获取上下文javax.naming.CommunicationException：无法获得到以下任何URL的连接：localhost:1099，发现失败，错误为：javax.naming.CommunicationException：接收超时[根异常为javax.naming.SocketTimeoutException：接收超时][根异常为javax.naming.CommunicationException：无法连接到服务器localhost:1099[根异常为javax.naming.ServiceUnavailableException：无法连接到服务器localhost:1099[根异常为java.net.ConnectException：连接拒绝：connect]]]

你能帮我解决这个问题吗？