英文:
Use java annotations in clojure
问题
(.b a (proxy [C] []
(^{Handler {}} ; 在这里添加 Java 注解
d [] (println "hello world"))))
请注意，上面的 Clojure 代码中，我已经在 ^{:Handler {}} 部分添加了 Java 注解。这是您在 Clojure 中向方法添加 Java 注解的正确方式。如果您仍然遇到问题，可能是其他方面的代码逻辑或环境设置导致的。
英文:
a.b(new C() {
@Handler
public void d() {
System.out.println("hello world");
}
});
I tried to translated it to clojure:
(.b a (proxy [C] []
(^{Handler {}}
d [] (println "hello world"))))
But unfortunately it doesn't work.
Is this correct? How should I add java annotation to a method?
答案1
得分: 2
我一般建议您将您的互操作代码编写在Java中：提供一个符合Java需求的API，并通过调用您的Clojure函数来实现它。Clojure转换为Java的层次结构并不丰富，无法创建除reify或defrecord之外的类型，我发现要处理注解或扩展类等复杂操作会很麻烦。
英文:
I generally suggest writing your interop code in Java: present an API that fits what Java wants, and implement it with calls to your Clojure functions. The Clojure->Java translation layer is just not that rich for creating types that are not just reify or defrecord, and I find it a big burden to do anything fancy, like handle annotations, or extend classes.
答案2
得分: 1
这里有相关文档链接。
基于此，我会尝试类似以下方式：
(deftype ^{Handler true} CC [] ...)
(.b a (CC.))
文档中没有提到代理（proxy）/reify的支持，所以我正在显式地创建一个新类。
英文:
There's documentation for this here
Based on that I'd try something along the lines of
(deftype ^{Handler true} CC [] ...)
(.b a (CC.))
There's no mention of proxy/reify support, that's why I'm creating a new class explicitly.
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