强制在编译时Java注释 [英] Enforcing java annotations at compile time

问题描述

你好：我想，以确保此注解是在一类编译时present。这可能吗 ？我认识到，annoataions自身是班，所以我想这样的 - 但是我的班我只是不知道语法哪里以及如何执行/实现这样的结构。

Hi : I wanted to make sure that an annotation is present at compile time in a class. Is this possible ? I realize that annoataions are, themselves, classes, so I assume so - but Im just not sure syntactically where and how to enforce/implement such a structure in my classes.

推荐答案

您可以写注释处理器在编译时运行任意的逻辑。

You can write an annotation processor to run arbitrary logic at compile time.

从注​​释处理器，你可以做这样的事情检查类是否具有特定结构或成员present如果该类存在一个特定的注释。他们是pretty灵活的 - 更多的，你可以跟他们做哪些检查出了一个主意<一的href=\"http://docs.oracle.com/javase/6/docs/api/javax/annotation/processing/AbstractProcessor.html\">the API 。他们还支持主要IDE，比如Eclipse和Netbeans。

From an annotation processor, you can do things like check whether a class has a particular structure or member present if a particular annotation exists on that class. They are pretty flexible - for more of an idea of what you can do with them check out the API. They are also supported in major IDEs such as Eclipse and Netbeans.

编写注释处理器的介绍是<一个href=\"http://today.java.net/pub/a/today/2008/04/10/source-$c$c-analysis-using-java-6-compiler-apis.html\">here.

An introduction to writing an annotation processor is here.

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