问题描述
我需要将 Spring 依赖项注入到 JPA 实体侦听器中.我知道我可以使用 @Configurable 和 Spring 的 AspectJ weaver 作为 javaagent 来解决这个问题,但这似乎是一个 hacky 解决方案.还有其他方法可以完成我想做的事情吗?
I need to have a Spring dependency injected into a JPA entity listener. I know I can solve this using @Configurable and Spring's AspectJ weaver as javaagent, but this seems like a hacky solution. Is there any other way to accomplish what I'm trying to do?
推荐答案
另一个技巧是使用静态方法实现一个实用程序类,它可以帮助您在任何地方使用 Spring bean,而不仅仅是在托管类中:
Another trick is to implement an utility class with static method that helps you to use Spring beans everywhere, not only in managed classes:
@Component public final class BeanUtil { private static ApplicationContext context; private BeanUtil(ApplicationContext context) { BeanUtil.context = context; } public static <T> T getBean(Class<T> clazz) throws BeansException { Assert.state(context != null, "Spring context in the BeanUtil is not been initialized yet!"); return context.getBean(clazz); } }