關於JPA多數據源的部署persistence.xml文件配置以及對應實現類注入

 

<? 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 >

上圖是persistence.xml中的配置文件 其中frameworkEjb和scada是Weblogic發布的兩個數據源的名稱，當在實現類中要用某個數據源的時候就加入一下語句

 

@PersistenceContext(unitName="frameworkEjb")