为嵌套类的方法获取JNI签名 [英] Get JNI Signature for methods of nested classes

问题描述

假设我有一个叫Scope的类，它有一个叫做Variable的嵌套类，我该如何使用 javap -s 获取类的JNI签名？我已经尝试过

javap -classpath< classpath> -s Scope $ Variable

，但这似乎不起作用。它似乎只是给我相同的信息，如果我只打字范围而不是范围$变量。

感谢任何帮助

解决方案

如果你在Linux / Unix环境下运行 javap c> $ 将由shell解释，而不是由 javap 解释。因此它被逃脱。最简单的解决方案是：

  javap -classpath< classpath> -s'Scope $ Variable'
  

没有引号的shell（我假设一个* sh后代）尝试用环境变量 Variable 的内容替换 $ Variable 部分。我假设没有这样的变量存在，因此没有任何东西（如空字符串）被替换。因此 javap 只能看到

  javap -classpath< classpath& -s范围
  

如果从Windows运行命令，那么这不是问题，因为神奇的角色将是％。

BTW：我不知道为什么JNI涉及这里。 >

Lets say I have a class called Scope that has a nested class called Variable, how exactly do I use javap -s to get the JNI signatures of the classes inside? I've tried doing

javap -classpath <classpath> -s Scope$Variable

, but this does not seem to work. It seems to just get me the same information as if I only typed "Scope" rather than "Scope$Variable".

Thanks for any help

解决方案

If you are running javap in a Linux/Unix environment, then the $ will be interpreted by the shell and not by javap. Therefore it mus be escaped. Simplest solution would be:

javap -classpath <classpath> -s 'Scope$Variable'

Without the quotes the shell (I assume a *sh offspring) will try to substitute the $Variable part with the contents of the environment variable Variable. I assume that no such variable exists and there fore nothing (as in "empty string") is substituted. Hence javap sees only

javap -classpath <classpath> -s Scope

If you are running the command from Windows, then this is not an issue, because the magical character would be %.

BTW: I don't know why JNI is involved here.

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