Setting velocity properties

I have occurence bui开发者_运维技巧lding a maven archetype where I want to do something like this

#set( $controllerPackage = ${package}\.${artifactId})

i.e. set the controllerPackage variable to equal the result of string concatentaion of the following three elements ($package,'.',$artifactId)

However this is obvioulsy not correct syntax - I get this

Lexical error: org.apache.velocity.runtime.parser.TokenMgrError: Lexical error at line 4, column 40. Encountered: "." (46), after : "\"

Is there a way I can include a period in my outputted string?

To construct a string, use quotes.

#set( $controllerPackage = "${package}.${artifactId}" )

You can use + for string concatenation:

#set( $controllerPackage = ${package} + "." + ${artifactId})