package interejbs;import javax.naming.*;import java.util.Properties;import javax.rmi.PortableRemoteObject;public class TestClient {  private firstEJBHome firstEJBHomeObject = null;  //創建一個EJB客戶端  public TestClient() {    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();    }  }	//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) {      System.out.println("Unable to connect to WebLogic server at " + url);      System.out.println("Please make sure that the server is running.");      throw e;    }  }  //----------------------------------------------------------------------------  //工具函數  //----------------------------------------------------------------------------  public firstEJBHome getHome() {    return firstEJBHomeObject;  }  //Main函數  public static void main(String[] args) {    TestClient client = new TestClient();	 //用client的getHome()函數調用Home接口函數得到遠程接口的引用     // 用遠程接口的引用訪問EJB    try {      firstEJB firstEJB=client.getHome().create();      System.out.print(firstEJB.MyPrint());    }    catch(Exception e) {            e.printStackTrace();    }      }}