我想做这样的事情:
配置属性:
dsname=value;
anotherValue=anotherValue;
持久性.xml
<jta-data-source>${dsname}</jta-data-source>
我想做这样的事情:
配置属性:
dsname=value;
anotherValue=anotherValue;
持久性.xml
<jta-data-source>${dsname}</jta-data-source>
属性文件在我的 Web 项目之外,我正在使用带有 EclipseLink 的 JPA,但我需要从外部文件值“dsname”初始化参数 jta-data-source
实际上:
<persistence-unit name="Unit-ejbPU" transaction-type="JTA">
<provider>org.eclipse.persistence.jpa.PersistenceProvider</provider>
<jta-data-source>datasource</jta-data-source>
<class>Clase1</class>
<class>Clase2</class>
<class>Clase3</class>
<properties/>
</persistence-unit>
想法:
<persistence-unit name="Unit-ejbPU" transaction-type="JTA">
<provider>org.eclipse.persistence.jpa.PersistenceProvider</provider>
<jta-data-source>${dsname}</jta-data-source>
<class>Clase1</class>
<class>Clase2</class>
<class>Clase3</class>
<properties/>
</persistence-unit>