使用Spring，Hibernate，JPA和Tomcat以及多个数据库的选项 [英] Options for using Spring, Hibernate, JPA, and Tomcat with multiple Databases

问题描述

我有一个在Spring 2.5.6下运行的Java Web应用程序，Hibernate 3.4（以Hibernate作为JPA提供程序）和Tomcat 6.我使用一个数据库模式/持久性单元工作，但现在需要连接2个模式/持久性单元。我可以在不移动到J2EE容器（如JBoss或Glassfish）的情况下执行此操作吗？我需要使用类似JOTM和global / XA事务吗？

I have a java web app running under Spring 2.5.6, Hibernate 3.4 (with Hibernate as the JPA provider), and Tomcat 6. I have it working with one DB schema / persistence unit but now need to connect to 2 schemas / persistence units. Can I do this without moving to a J2EE container such as JBoss or Glassfish? Will I need to use something like JOTM and global / XA transactions?

推荐答案

如果您需要访问相同的多个事务资源交易，你需​​要JTA，因此需要一个JTA交易管理器。在Spring级别，这意味着使用 JtaTransactionManager 而不是您的 JpaTransactionManager 。如果您不想转移到真正的Java EE应用服务器，那么您的确可以使用独立的事务管理器，如JOTM或Atomikos。我更喜欢后面的，但个人而言，我会转向GlassFish。

If you need to access multiple transactional resources within the same transaction, you'll need JTA and thus a JTA transaction manager. At the Spring level, this will mean using a JtaTransactionManager instead of your JpaTransactionManager. And if you don't want to move to a real Java EE app server, you'll have indeed to use a standalone transaction manager such as JOTM or Atomikos. I prefer the later but, personally, I would just move to GlassFish.

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