译者注：原文出处http://danielwestheide.com/blog/2012/12/26/the-neophytes-guide-to-scala-part-6-error-handling-with-try.html，翻译：Thomas
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When just playing around with a new language, you might get away with simply ignoring the fact that something might go wrong. As soon you want to create anything serious, though, you can no longer run away from handling errors and exceptions in your code. The importance of how well a language supports you in doing so is often underestimated, for some reason or another.
Scala, as it turns out, is pretty well positioned when it comes to dealing with error conditions in an elegant way. In this article, I’m going to present Scala’s approach to dealing with errors, based on the?Try?type, and the rationale behind it. I’m using features introduced with Scala 2.10 and ported back to Scala 2.9.3, so make sure your Scala version in SBT is at 2.9.3 or later.
Throwing and catching exceptions
Before going straight to Scala’s idiomatic approach at error handling, let’s first have a look at an approach that is more akin to how you are used to working with error conditions if you come from languages like Java or Ruby. Like these languages, Scala allows you to throw an exception: