動態登錄到數據庫休眠

Question

我必須做一個應用程序，有一個登錄名輸入數據庫作爲管理員，而不必使用配置文件的用戶名和密碼參數，但我不明白，你能幫助我？

public class HibernateUtil { 

private static SessionFactory sessionFactory; 

public static void configureHibernateUtil(String user, String pass) { 
    try { 
     Configuration cfg = new Configuration(); 
     cfg.configure("/dao/hibernate.cfg.xml"); //hibernate config xml file name 
     String newUserName = null, newPassword = null;//set them as per your needs 
     cfg.getProperties().setProperty("hibernate.connection.password", newPassword); 
     cfg.getProperties().setProperty("hibernate.connection.username", newUserName); 
     //In next line you just tell Hibernate which classes are you going to query 

     StandardServiceRegistryBuilder ssrb = new StandardServiceRegistryBuilder() 
       .applySettings(cfg.getProperties()); 
     sessionFactory = cfg.buildSessionFactory(ssrb.build()); 
    } catch (HibernateException he) { 
     System.err.println("Ocurrió un error en la inicialización de la SessionFactory: " + he); 
     throw new ExceptionInInitializerError(he); 
    } 
} 

public static SessionFactory getSessionFactory() { 
    return sessionFactory; 
} 

}

Answer 1

的方法參數user和pass不取代的cfg屬性。所以該方法不起作用。這是修改後的代碼：

public static void configureHibernateUtil(String user, String pass) { 
    try { 
     Configuration cfg = new Configuration(); 
     cfg.configure("/dao/hibernate.cfg.xml"); //hibernate config xml file name 
     //String newUserName = null, newPassword = null;//set them as per your needs 
     cfg.getProperties().setProperty("hibernate.connection.password", pass); 
     cfg.getProperties().setProperty("hibernate.connection.username", user); 
     //In next line you just tell Hibernate which classes are you going to query 

     StandardServiceRegistryBuilder ssrb = new StandardServiceRegistryBuilder() 
       .applySettings(cfg.getProperties()); 
     sessionFactory = cfg.buildSessionFactory(ssrb.build()); 
    } catch (HibernateException he) { 
     System.err.println("Ocurrió un error en la inicialización de la SessionFactory: " + he); 
     throw new ExceptionInInitializerError(he); 
    } 
}