在Java中重新发现异常，而不会丢失堆栈跟踪 [英] Rethrowing exceptions in Java without losing the stack trace

问题描述

在C＃中，我可以使用 throw; 语句在保留堆栈跟踪时重新抛出异常：

In C#, I can use the throw; statement to rethrow an exception while preserving the stack trace:

try
{
   ...
}
catch (Exception e)
{
   if (e is FooException)
     throw;
}

在Java中有这样的东西（不会丢失原始堆栈跟踪）？

Is there something like this in Java (that doesn't lose the original stack trace)?

推荐答案

catch (WhateverException e) {
    throw e;
}

只会重新抛出您遇到的异常（显然，周围的方法必须通过其签名等方式）。例外情况将维持原始堆栈跟踪。

will simply rethrow the exception you've caught (obviously the surrounding method has to permit this via its signature etc.). The exception will maintain the original stack trace.

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