关于JPA多数据源的部署persistence.xml文件配置以及对应实现类注入

<?xml version="1.0" encoding="UTF-8"?> <persistence xmlns="http://java.sun.com/xml/ns/persistence"     xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"     xsi:schemaLocation="http://java.sun.com/xml/ns/persistence     http://java.sun.com/xml/ns/persistence/persistence_1_0.xsd" version="1.0">            <persistence-unit name="frameworkEjb" transaction-type="JTA">         <jta-data-source>frameworkDs</jta-data-source>     </persistence-unit>     <persistence-unit name="scada" transaction-type="JTA">       <jta-data-source>scada</jta-data-source>     </persistence-unit>           </persistence>

上图是persistence.xml中的配置文件 其中frameworkEjb和scada是Weblogic发布的两个数据源的名称，当在实现类中要用某个数据源的时候就加入一下语句

@PersistenceContext(unitName="frameworkEjb")