EJBFactory2

 public static EjbCallFactory getInstance()
    {
        if (instance == null)
        {
            instance = new EjbCallFactory();
        }
        return instance;
    }
   
    /**
     * 获取初始化的Context
     *
     * @throws BossException
     */
    private void getInitialContext() throws Exception
    {
        if (initContext == null)
        {
            String url = null;
            url = KEY_URL;
            getInitialContext(url);
        }
       
    }