package interejbs;import javax.ejb.*;import javax.naming.*;import java.util.Properties;import javax.rmi.PortableRemoteObject;public class secondEJBBean implements SessionBean {  SessionContext sessionContext;  private firstEJBHome firstEJBHomeObject = null;  public void ejbCreate() throws CreateException {    try {      //得到名字上下文      Context ctx = getInitialContext();      //查詢jndi名      Object ref = ctx.lookup("firstEJB");      //通過強制轉型得到Home接口      firstEJBHomeObject = (firstEJBHome) PortableRemoteObject.narrow(ref, firstEJBHome.class);    }    catch(Exception e) {      e.printStackTrace();    }     }  public void ejbRemove() {  }  public void ejbActivate() {  }  public void ejbPassivate() {  }    //這個函數返回一個經過初始化的上下文  private Context getInitialContext() throws Exception {    String url = "t3://cgb-4wn01xj69v6:7001";    String user = null;    String password = null;    Properties properties = null;    try {      properties = new Properties();      properties.put(Context.INITIAL_CONTEXT_FACTORY, "weblogic.jndi.WLInitialContextFactory");      properties.put(Context.PROVIDER_URL, url);      if (user != null) {        properties.put(Context.SECURITY_PRINCIPAL, user);        properties.put(Context.SECURITY_CREDENTIALS, password == null ? "" : password);      }      return new InitialContext(properties);    }    catch(Exception e) {         throw e;    }  }  public void setSessionContext(SessionContext sessionContext) {    this.sessionContext = sessionContext;  }  //這個函數將被FirstEJB調用，同時它將調用secondEJB  public String forFirst(String fromFirst) {    try {      firstEJB firstEJB=firstEJBHomeObject.create();      fromFirst=fromFirst+"This is secondEJB called by firstEJB\n";      fromFirst=firstEJB.forSecond(fromFirst);    }    catch(Exception e) {            e.printStackTrace();    }        return fromFirst;  }}