Add the plugin to your project in
resolvers += "GWT plugin repo" at "http://thunderklaus.github.com/maven" addSbtPlugin("net.thunderklaus" % "sbt-gwt-plugin" % "1.1-SNAPSHOT")
Add the GWT settings to your project in
import net.thunderklaus.GwtPlugin._ seq(gwtSettings :_*) libraryDependencies += "org.mortbay.jetty" % "jetty" % "6.1.22" % "container"
This adds the GWT compilation task, which can be called directly with
gwt-compile. The GWT compilation is automatically triggered when the
package-war task is invoked.
gwt-devmode to run your module in the GWT development mode shell. By default this runs the first module in the
gwtModules list, but one can use the
gwt-set-module command to instruct
gwt-devmode to use the first module containing the substring passed to
Development Mode with Google App Engine
It is possible to run the Google App Engine development server when running the GWT devmode shell. You must simply configure
gaeSdkPath := Some("/path/to/appengine-java-sdk-x.x.x")
If you prefer not to hardcode paths in your SBT build, you can easily extract the path from a shell environment variable like so:
gaeSdkPath := Option(System.getenv("APPENGINE_SDK_HOME"))
Enter the following in the SBT console prior to invoking
gwt-devmode to see the exact configuration changes made when running the GWT devmode shell with the Google App Engine dev server:
set logLevel := Level.Debug
Testing with Jetty
You can also test your
gwt-compiled app with Jetty, by running
jetty-run followed by
gwt-compile and then browsing to
http://localhost:8080/. Note that to use
jetty-run you must add Jetty to your project dependencies like so:
libraryDependencies ++= Seq( "org.mortbay.jetty" % "jetty" % "6.1.22" % "jetty" )
The default GWT version is 2.3.0 which can be overridden like this:
gwtVersion := "2.2.0"
By default, all GWT modules in the source directory are compiled. You can specify which ones to build like this:
gwtModules := List("net.thunderklaus.hello_gwt_sbt.Hello_gwt_sbt")
Additional arguments can be passed to the JVM used to run GWT devmode and the GWT compiler:
javaOptions in Gwt += "-mx512M"
The GWT settings include the web settings from the project https://github.com/siasia/xsbt-web-plugin. So, all tasks from that plugin are also available. Have a look at the documentation there.
sbt-gwt-plugin is open source software licensed under the Apache 2.0 License. Feel free to use it!