package jtajts;import javax.naming.*;import java.util.Properties;import javax.rmi.PortableRemoteObject;import javax.transaction.UserTransaction;import javax.transaction.*;public class JtaClient {  private JtaHome jtaHome = null;  ////創(chuàng)建一個EJB客戶端  public JtaClient() {    try {      //得到名字上下文      Context ctx = getInitialContext();      //查詢jndi名      Object ref = ctx.lookup("Jta");      //通過強制轉型得到Home接口      jtaHome = (JtaHome) PortableRemoteObject.narrow(ref, JtaHome.class);    }    catch(Exception e) {      e.printStackTrace();    }  }  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 JtaHome getHome() {    return jtaHome;  }  //Main函數  public static void main(String[] args) {    JtaClient client = new JtaClient();	 //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    System.out.print("This is a transaction example based on JTA!\n");    try {      Jta Jta=client.getHome().create();      System.out.print(Jta.myTransation());      System.out.print("The example is over!");    }    catch(Exception e) {          e.printStackTrace();    }  }}