java - Felix 如何检查捆绑包？

Question

我有一些应用程序，使用了 Felix OSGi 框架。

更新后如何检查捆绑包？

即我有很多捆绑包并且所有捆绑包都已加载。我可以更新捆绑目录中的一些捆绑包。如何检查，哪些捆绑文件已更改以及哪些捆绑 - 未更改？

Answer 1

You can register a BundleListener. It will be called whenever bundles change.

Normally this is not necessary though as there are other means to notify your other bundles of the changes. Typically you would offer a service in a bundle and use this service in another bundle. This other bundle can then use a ServiceTracker or a blueprint service reference and this way react on the service life-cycle.