问题描述
如何在java中实现vtable COM接口？
How can I implement a vtable COM interface in java?
在过去，我将使用Microsft JVM，它内置了java-COM互操作。
In the old days, I'd use the Microsft JVM, which had built in java-COM interop. What's the equivalent for a modern JRE?
对类似的建议JACOB。我看过JACOB，但是这是基于IDispatch，并且旨在控制自动化承包商。我需要的COM接口是自定义vtable（扩展IUnknown），例如。 IPesistStream，IOleWindow，IContextMenu等。
Answers to a similar SO question proposed JACOB. I've looked at JACOB, but that is based on IDispatch, and is aimed at controlling Automation serers. The COM interfaces I need are custom vtable (extend IUnknown), e.g. IPersistStream, IOleWindow, IContextMenu etc.
对于我的用例，我可以实现JNI中的所有COM细节，并使JNI层在java中调用相应的接口。
For my use case, I could implement all the COM specifics in JNI, and have the JNI layer call corresponding interfaces in java. But I'm hoping for a less painful solution.
这是一个开源项目，所以开源替代品是首选。
It's for an open source project, so open source alternatives are preferred.
编辑：Com4j看起来很有前途。查看可用的文档，它似乎不支持注册IClassFactory，所以COM对象（在java中）可以由非java客户端实例化。
Com4j looks promising. Looking through the available docs, it doesn't seem to support registering a IClassFactory so the COM object (in java) can be instantiated by non-java clients.
推荐答案
可能是您需要的。从首页：
Com4J may be what you need. From the homepage:
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