如何在应用程序中访问绑定的EJB?

今天又有问题了,所有的例子都是在WEB页面里面调用EJB的,这很容易理解,因为WEB页面也在ＪＢＯＳＳ容器里面，EJB和WEB页面同在一个JVM里面,调用当然会比较方便,可是如何跨JVM来调用它里面的对象呢

我照WEB里面的样子试了一下,却发现不行.代码如下

java 代码

/*
 * Test.java
 *
 * Created on 2006年12月12日, 下午5:20
 *
 * To change this template, choose Tools | Template Manager
 * and open the template in the editor.
 */

package lbf.demo.filter;

/**
 *
 * @author lbf
 */
import com.foshanshop.ejb3.*;
import com.foshanshop.ejb3.bean.*;
import javax.naming.*;
import java.util.*;
import java.io.*;
public class Test {

    /** Creates a new instance of Test */
    public Test() {
    }
    public static void main(String[] args)throws Exception {
        PrintStream out=System.out;
        Properties props = new Properties();
        props.setProperty("java.naming.factory.initial", "org.jnp.interfaces.NamingContextFactory");
        props.setProperty("java.naming.provider.url", "localhost:1099");
        props.setProperty("java.naming.factory.url.pkgs", "org.jboss.naming");
        //  System.out.println(Class.forName("org.jboss.aop.advice.Interceptor"));
        InitialContext ctx = new InitialContext(props);
        try {
            System.out.println("初始化OK");
            OrderDAO orderdao = (OrderDAO) ctx.lookup("lbf/OneToMany");
            System.out.println("得到OrderDAO");

            orderdao.insertOrder();
            List list = orderdao.getAllOrder();
            if (list!=null){
                Integer orderid = null;
                for(int i=0; i
                    Order od = (Order) list.get(i);
                    if (od!=null){
                        if (!od.getOrderid().equals(orderid)){
                            orderid = od.getOrderid();
                            out.println("==============订单号："+ od.getOrderid() +"=================
    ");
                            Iterator iterator = od.getOrderItems().iterator();
                            while (iterator.hasNext()){
                                OrderItem SubOrder = (OrderItem) iterator.next();
                                out.println("订购产品:"+ SubOrder.getProductname() +"
    ");
                            }
                        }
                    }
                }
            }else{
                out.println("获取不到订单列表");
            }
        } catch (Exception e) {
            out.println(e.getMessage());
        }
    }
}

抛出的错误(注意,不是异常)为

Exception in thread "main" java.lang.NoClassDefFoundError: [Lorg/jboss/aop/advice/Interceptor;
        at java.lang.Class.getDeclaredFields0(Native Method)
        at java.lang.Class.privateGetDeclaredFields(Class.java:2232)
        at java.lang.Class.getDeclaredField(Class.java:1852)
        at java.io.ObjectStreamClass.getDeclaredSUID(ObjectStreamClass.java:1582)
        at java.io.ObjectStreamClass.access$700(ObjectStreamClass.java:52)
        at java.io.ObjectStreamClass$2.run(ObjectStreamClass.java:408)
        at java.security.AccessController.doPrivileged(Native Method)
        at java.io.ObjectStreamClass.<init></init>(ObjectStreamClass.java:400)
        at java.io.ObjectStreamClass.lookup(ObjectStreamClass.java:297)
        at java.io.ObjectStreamClass.initNonProxy(ObjectStreamClass.java:531)
        at java.io.ObjectInputStream.readNonProxyDesc(ObjectInputStream.java:1551)
        at java.io.ObjectInputStream.readClassDesc(ObjectInputStream.java:1465)
        at java.io.ObjectInputStream.readNonProxyDesc(ObjectInputStream.java:1551)
        at java.io.ObjectInputStream.readClassDesc(ObjectInputStream.java:1465)
        at java.io.ObjectInputStream.readNonProxyDesc(ObjectInputStream.java:1551)
        at java.io.ObjectInputStream.readClassDesc(ObjectInputStream.java:1465)
        at java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1698)
        at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1304)
        at java.io.ObjectInputStream.defaultReadFields(ObjectInputStream.java:1917)
        at java.io.ObjectInputStream.readSerialData(ObjectInputStream.java:1841)
        at java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1718)
        at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1304)
        at java.io.ObjectInputStream.readObject(ObjectInputStream.java:349)
        at java.rmi.MarshalledObject.get(MarshalledObject.java:135)
        at org.jnp.interfaces.MarshalledValuePair.get(MarshalledValuePair.java:72)
        at org.jnp.interfaces.NamingContext.lookup(NamingContext.java:652)
        at org.jnp.interfaces.NamingContext.lookup(NamingContext.java:587)
        at javax.naming.InitialContext.lookup(InitialContext.java:351)
        at lbf.demo.filter.Test.main(Test.java:36)
没有发现"org/jboss/aop/advice/Interceptor"类的定义,为什么在这里会需要这么一个类呢,为什么在WEB页面里面不会需要它呢,并且我在WEB页面里面试了,连

props.setProperty("java.naming.factory.initial", "org.jnp.interfaces.NamingContextFactory"); 
props.setProperty("java.naming.provider.url", "localhost:1099");   
props.setProperty("java.naming.factory.url.pkgs", "org.jboss.naming");   

这些变量没设都可以通过,并且顺利的得到该得到的对象,我这里如果去除了的,就会出异常,说
Need to specify class name in environment or system property, or as an applet parameter, or in an application resource file:  java.naming.factory.initial
需要配置环境变量什么的.

EJB肯定是可以跨JVM调用的,连平台都可以跨,那JVM又算什么.可是在我这里为什么连JVM也跨不了呢?

因为调试EJB总用WEB网页的形式也不好,因为网页也要发布,如果直接可以用application来调用,那岂不是更方便?

唉,此问题留给以后解决.希望能尽快在应用程序中调用EJB.
==========================================================================================

唉,原来是一个很简单的问题,WEB里面之所以能行是因为它初始化InitialContext的时候要用到环境变量所指定的一些类,这些类在JBOSS里面是肯定有的,但是我如果做成独立的应用程序的话,运行的时候,当然找不到那些类了,所以就出错了.
这么简单的一个问题却让我想了半天.还好,今天就把它解决了,顺便把要用的包附上

下面的jar 文件是必需的：
[jboss安装目录]\client\jbossall-client.jar
[jboss安装目录]\server\all\deploy\jboss-aop-jdk50.deployer\jboss-aop-jdk50.jar
[jboss安装目录]\server\all\deploy\jboss-aop-jdk50.deployer\jboss-aspect-library-jdk50.jar
[jboss安装目录]\server\all\deploy\ejb3.deployer\jboss-ejb3.jar
[jboss安装目录]\client\jboss-remoting.jar

把以上文件组合成一个库就可以了,以后想怎么调试都可以了.还有,这些还是不够的,还有一个重要的库,那么就是支持EJ的javaee.jar文件.