Jbuilder5+Weblogic6.1开发EJB的成功例子

Jbuilder5+weblogic6.1编写EJB的成功例子
1.安装Jbuilder5 enterprise 到c:\jbuider5\
  BAS 安装到c:\BAS\
2.安装weblogic6.1 到C:\bea
  weblogic 在C:\bea\wlserver6.1 下
3.配置jbuidler5(否则会发现创建ejb的选项是灰色的)
  Tools\Enterprise setup
    Application Server
    BAS 4.5: 选择BAS安装目录c:\BAS
    Weblogic6.0:
    weblogic installation directory 选择C:\bea\wlserver6.1        
    bea home directory 选择 C:\bea
4.编写EJB
  package:ejbpro
  ejb group name:ejbgroup
  包文件:ejbgroup.jar,包含ejb-jar.xml,manifest.mf,weblogic-ejb-jar.xml,以及ejbpro下的所有编译过的类文件
  类文件:

1)远程接口
//myFirst.java//remote interface
package ejbpro;

import java.rmi.*;
import javax.ejb.*;

/**
 * Title:
 * Description:
 * Copyright:    Copyright (c) 2002
 * Company:
 * @author
 * @version 1.0
 */

public interface myFirst extends EJBObject {
  public String message(String str) throws RemoteException;
}
2)Bean类
//myFirstBean.java//bean object

package ejbpro;

import java.rmi.*;
import javax.ejb.*;

/**
 * Title:
 * Description:
 * Copyright:    Copyright (c) 2002
 * Company:
 * @author
 * @version 1.0
 */

public class myFirstBean implements SessionBean {
  private SessionContext sessionContext;
  public void ejbCreate() {
  }
  public void ejbRemove() throws RemoteException {
  }
  public void ejbActivate() throws RemoteException {
  }
  public void ejbPassivate() throws RemoteException {
  }
  public void setSessionContext(SessionContext sessionContext) throws RemoteException {
    this.sessionContext = sessionContext;
  }
  public String message(String str)throws RemoteException{
    System.out.println("Remote Object Received From Client: \""+str+"\""); //打印（从客户端）接收到的字符串。
    return "Hello,I'm Remote Object"; //返回一应答字符串。
  }

} 
3)HOME接口
//myFirstHome.java//remote home

package ejbpro;

import java.rmi.*;
import javax.ejb.*;

/**
 * Title:
 * Description:
 * Copyright:    Copyright (c) 2002
 * Company:
 * @author
 * @version 1.0
 */

public interface myFirstHome extends EJBHome {
  public myFirst create() throws RemoteException, CreateException;
} 
4)客户端javaBean
//Client.java//java Bean
package ejbpro;

/**Client side JavaBean to call EJB
 * By TomChen
 * 2002-4-26
 */
public class Client {
  public String message(){
    String receiveFromRemote="Error";
    try{
        javax.naming.Context initContext=new javax.naming.InitialContext();
        Object obj=initContext.lookup("myj2ee"); //远程查找，由名字得到对应的对象。
        myFirstHome home=(myFirstHome)javax.rmi.PortableRemoteObject.narrow(obj,myFirstHome.class);