问题
1) Javadoc artifacts tend to take too much space and time to download.
For example, scala-library-2.10.2-sources.jar is 1 Mb, but scala-library-2.10.2-javadoc.jar is 34 Mb.
2) Javadoc is mostly not needed at all. As modern IDEs can fetch all info from sources.
So I wanted to find a way to alter sbt settings to completely disable javadoc download among third-party library dependencies.
回答1:
https://github.com/mpeltonen/sbt-idea/issues/225#issuecomment-19150022 kindly gives the answer:
The javadoc is typically much more bulky and less useful than the sources. I have at least turned off downloading javadocs by putting this setting in ~/.sbt/build.sbt:
transitiveClassifiers in Global := Seq(Artifact.SourceClassifier)
See also What is a classifier in SBT.
Note that ~/.sbt/build.sbt on Linux corresponds to %USERPROFILE%\.sbt\build.sbt on Windows.
来源：https://stackoverflow.com/questions/20313123/how-to-skip-javadoc-dependency-download-with-sbt