hibernate.cfg.xml-从属性文件设置参数

Question

I've this file hibernate.cfg.xml that I use to configure hibernate at sturtup.

<property name="hibernate.connection.username">dbUser</property>
<property name="hibernate.connection.password">1234</property>

I've a properties file that it's called config.properties that hold all other configurations used into the application.

How can I set "hibernate.connection.username" parameter from the properties file (config.properties) so I have only one file to edit?

Answer 1

It depends on the destination of the properties stored in config.properties

If they go in the java System properties, you can use them in your hibernate config like this :

<property name="hibernate.connection.password">${propertyName}</property>

If your properties go somewhere else, then I don't think hibernate will see them naturally...

Answer 2

对我来说，解决方案是在运行时将属性添加到配置中：

configuration.setProperty("hibernate.connection.username", Config.db.getUser());

Answer 3

I do it like that:

Map<String, Object> prop = new HashMap<String, Object>();

prop.put("hibernate.connection.username", "asdf");
prop.put("hibernate.connection.password", "xxx");


Persistence.createEntityManagerFactory(persistenceUnitName, prop);