为什么我不能在“try” - “catch”中包装每个块？ [英] Why should I not wrap every block in "try"-"catch"?

问题描述

我一直相信，如果一个方法可以抛出一个异常，那么它是鲁莽不保护这个调用有意义的try块。

I have always been of the belief that if a method can throw an exception then it is reckless not to protect this call with a meaningful try block.

我只是发布' 这个问题，并被告知这是'非常糟糕的建议' - 我想了解为什么。

I just posted 'You should ALWAYS wrap calls that can throw in try, catch blocks.' to this question and was told that it was 'remarkably bad advice' - I'd like to understand why.

推荐答案

一个方法只能捕获一个异常，当它可以以一些明智的方式处理它。

A method should only catch an exception when it can handle it in some sensible way.

否则，传递它，希望一个方法更高

Otherwise, pass it on up, in the hope that a method higher up the call stack can make sense of it.

正如其他人所指出的，最佳实践是有一个未处理的异常处理程序（具有日志记录）在最高级别的调用堆栈以确保记录任何致命错误。

As others have noted, it is good practice to have an unhandled exception handler (with logging) at the highest level of the call stack to ensure that any fatal errors are logged.

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