如何拦截Java中的对象创建 [英] How to intercept object creation in Java

问题描述

我有一个奇怪的要求.我猜.

I have a little weird requirement.I guess.

我想使用我创建的自定义代理来装饰实现特定接口的所有对象，但我需要它对代码本身透明.可以包含在构建过​​程中的东西将是完美的.

I'd like to use a custom Proxy I created to decorate all object that implements an specific interface, but I need this to be transparent to the code itself. Something that could be included in the build process would be perfect.

我在 AOP 中思考，但没有看到这样的功能，我正在寻找想法，甚至是疯狂的想法.我正在考虑在编译后更改源代码并重新编译它至少替换对 new 的直接调用(我想这不会通过反射创建对象，但会是一个不错的开始)但我可以想到一百万个问题这可能会破坏我的主要目标，即使此类仪器尽可能透明.

I was thinking in AOP but didn't see such capabilities, I'm looking for ideas, even the crazy ones. I'm thinking on changing the source code after compilation and recompiling it replacing at least the direct calls to new(I guess this would not get object creation by reflection but would be a nice start) but I can think of a million of problems that this could bring, breaking my main objective that is make such instrumentation as transparent as possible.

你们中的一些人对这种不寻常的事情有什么经验吗?

Did some of you have some experience on such unusual thing ?

问候

推荐答案

使用注解修饰类，使用注解处理注入需要的代码.

Use an annotation to decorate the classes and use annotation processing to inject the code you need.

仅供参考，Hibernate 采用这种方法

fyi, Hibernate employs this approach

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