package interejbs;import javax.ejb.*;import javax.naming.*;import java.util.Properties;import javax.rmi.PortableRemoteObject;public class firstEJBBean implements SessionBean {  SessionContext sessionContext;  private secondEJBHome secondEJBHomeObject = 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("secondEJB");      //通過強(qiáng)制轉(zhuǎn)型得到Home接口      secondEJBHomeObject = (secondEJBHome) PortableRemoteObject.narrow(ref, secondEJBHome.class);    }    catch(Exception e) {      e.printStackTrace();    }  }  public void ejbRemove() {  }  public void ejbActivate() {  }  public void ejbPassivate() {  }  public void setSessionContext(SessionContext sessionContext) {    this.sessionContext = sessionContext;  }  //這個(gè)函數(shù)返回一個(gè)經(jīng)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;    }  }	 //這個(gè)函數(shù)將調(diào)用secondEJB  public String MyPrint() {    String ret="This is a example for interEJBS:\n";    ret=ret+"This is firstEJB,now calling secondEJB\n";    try {      secondEJB secondEJB=secondEJBHomeObject.create();      ret=secondEJB.forFirst(ret)+"example is over!\n";    }    catch(Exception e) {        e.printStackTrace();    }    return ret;  }   //這個(gè)函數(shù)將被secondEJB調(diào)用  public String forSecond(String fromSecond) {    fromSecond=fromSecond+"This is firstEJB called by secondEJB\n";    return fromSecond;  }}