使用IntelliJ IDEA时build.sbt出现Cannot resolve symbol错误求助

Hey there! The issue you're hitting is a straightforward syntax misstep in your build.sbt file—let's sort this out quickly.

What's Causing the Errors #

Your current code shoves all three configuration settings onto a single line without proper separation:

name := "ScalaProject - 0.7(version)" version := "0.1" scalaVersion := "2.12.6"

SBT uses a Scala-based DSL, where each configuration entry is a standalone expression. When you jam them together like this, SBT can't parse each setting correctly, which triggers those "Cannot resolve symbol" warnings.

The Corrected build.sbt Syntax #

You have two valid ways to fix this:

1. Put each setting on its own line (this is the standard, most readable approach):

   name := "ScalaProject - 0.7(version)"
   version := "0.1"
   scalaVersion := "2.12.6"
   

2. Separate settings with semicolons if you prefer a single line (though this is less common):

   name := "ScalaProject - 0.7(version)"; version := "0.1"; scalaVersion := "2.12.6"
   

Extra Fixes If Errors Linger #

If you fix the syntax and still see red squiggles in your IDE (like IntelliJ):

• Reload the SBT project: Head to the SBT tool window and click Reload All SBT Projects.
• Verify your IDE plugins: Make sure you have the latest Scala and SBT plugins installed—outdated versions can cause parsing glitches.
• Invalidate IDE caches: Go to File > Invalidate Caches... and restart your IDE to clear stale data that might be causing false errors.

内容的提问来源于stack exchange，提问作者Gran Lokan