Strange Scalatra issue that halt does not work when trait JacksonJsonSupport is mixed in

I am running Scala version 2.11.1 and Scalatra version 2.3.0 and had a strange problem that plain vanilla halt does not work when the trait JacksonJsonSupport is mixed in with my controller class. Here are two simpel code snippets to illustrate the problem. Continue reading

Error compiling Scalatra project

Seriously? Unsupported major.minor version 51.0 when compiling a Scalatra project? The complete error is “Caused by: java.lang.UnsupportedClassVersionError: org/eclipse/jetty/server/Handler : Unsupported major.minor version 51.0”. After some Googling I found the following statement “You are using different JDK versions to compile and run the application”. No way, that is not possible. Continue reading

Installing Scalatra on Windows

Scalatra is a micro framework for Scala. Installation does not seem to be as straight forward as adding Scalatra to the dependencies of build.sbt. It requires a number of other tools to work: Conscript and giter8. Conscript is a tool for installing and updating Scala code. giter8, which depends on conscript, allows you to check out project templates directly from Github. It’s the recommended way to generate Scalatra project skeletons. These are quick installation instructions for Scalatra on Windows. Continue reading