java - Where is the "official" annotations api?

Question

I am reading a tutorial about stripes security that tells me to annotate like this

@RolesAllowed({
  "Administrator",
  "User if ${user eq message.folder.user}"
})

But I think I want to do something else in my own case, use another operator or such. I have googled but not succeeded. Where is the "manual" for annotation expressions.

I look forward to understand the explanation for:

${//some expression}

and also that if and eq operators, where is the "list"?

Answer 1

占位符/表达式不是 Java 注释的一部分。"User if ${user eq message.folder.user}"从 Java 注释的角度来看，它只是一个字符串。在上述情况下，只有注释处理器（条纹？）知道如何解释${user eq message.folder.user}表达式。