I am new at scala. And for start I want to use Intellij 13.1.5 IDE.
However IDE can't attach sources. Here is how it looks for AnyVal:
Search at internet can't find any source.
I tried Attach sources and attach unpacked scala archive. It doesn't work either.
UPDATE:
Here is sbt configuration:
name := "scalatest-selenium"
version := "1.0"
scalaVersion := "2.11.1"
libraryDependencies ++= Seq(
"net.sourceforge.htmlunit" % "htmlunit" % "2.14",
"org.seleniumhq.selenium" % "selenium-java" % "2.42.2",
"org.scalacheck" % "scalacheck_2.10" % "1.11.4" % "test",
"org.scalatest" % "scalatest_2.11" % "2.2.0" % "test"
)
testOptions in Test += Tests.Argument(TestFrameworks.ScalaTest, "-u", "target/test-reports")
How to solve this trouble?
I get rid of this trouble at the following way:
removed the .sbt directory in your Home Folder.
When you run sbt again, the new folder is created in the correct format and the error goes away.
Related
I'm attempting to create 'from scratch' a Lift web application and running into some difficulty. I started with xsbt-web-plugin version 2.1, and managed to get it working with a simple Jetty servlet. Then I tried to integrate information from the Lift Cookbook.
This is my build.sbt:
organization := "ford.nathaniel"
name := "Lift From Scratch"
version := "0.1-SNAPSHOT"
scalaVersion := "2.11.7"
libraryDependencies += "javax.servlet" % "javax.servlet-api" % "3.0.1" % "provided"
enablePlugins(JettyPlugin)
libraryDependencies ++= {
val liftVersion = "3.0-M8"
Seq(
"net.liftweb" %% "lift-webkit" % liftVersion % "compile",
"org.eclipse.jetty" % "jetty-webapp" % "9.2.1.v20140609" % "container, test",
"org.eclipse.jetty" % "jetty-plus" % "9.2.1.v20140609" % "container, compile"
)
}
I have a (one line) project/plugins.sbt:
addSbtPlugin("com.earldouglas" % "xsbt-web-plugin" % "2.1.0")
I lifted the Boot.scala file directly from the above-linked Cookbook and placed it in src/main/scala/bootstrap, and similarly src/main/webapp/WEB-INF/web.xml. I can run sbt from the command line, and it loads cleanly, but when I try container:start...
> container:start
[info] starting server ...
[success] Total time: 0 s, completed Mar 3, 2016 9:52:25 PM
Error: Could not find or load main class
>
I am unclear on how sbt is meant to find Lift's main class. I looked through a lot of older versions of sbt configuration, which differ because earlier versions use earlier versions of the xsbt plugin. (Specifically, you see things like seq(webSettings :_*) - what does that even do?) I pulled recent versions of jetty-webapp and jetty-plus, so I don't think that's the problem. On the other hand, none of those configurations make clear how Lift figures out where Boot.scala is, and in turn I'm not sure how to write the configuration such that it knows how to bootstrap the framework.
One main difference between the two sources is that the new Jetty README configures the servlet like this:
libraryDependencies += "javax.servlet" % "javax.servlet-api" % "3.0.1" % "provided"
enablePlugins(JettyPlugin)
containerLibs in Jetty := Seq("org.eclipse.jetty" % "jetty-runner" % "9.2.1.v20140609" intransitive())
containerMain in Jetty := "org.eclipse.jetty.runner.Runner"
This seems to configure a SettingKey on the Jetty plugin, and point to the Jetty runner to kick off the servlet. However, given that I'm not running through a standard servlet, but through a filter configured to point to the Lift app in web.xml, this seemed like something I should remove.
Clearly I'm misunderstanding something. How do I diagnose why the xsbt-web-plugin is not picking up the Lift framework? It seems like either there is configuration-by-convention I can't find or I need to do something special with Jetty to point to the web.xml filter. Can anyone help clarify how to diagnose this, or elucidate how the two libraries should work together?
The following build.sbt ended up working for me when executed as jetty:start (rather than container:start). It appears that net.liftweb needs to be included as a libraryDependency rather than in the containerLibs, and that the Jetty plugin manages the container. I don't understand particularly, though, what the difference is or how to diagnose this in the future (ended up just trying a lot of different things).
Notably, though, the Boot.scala class of Lift is picked up automagically if the web.xml file is set up to use a Lift filter.
organization := "ford.nathaniel"
name := "Lift From Scratch"
version := "0.1-SNAPSHOT"
scalaVersion := "2.11.7"
libraryDependencies += "javax.servlet" % "javax.servlet-api" % "3.0.1" % "provided"
//logLevel := Level.Debug
enablePlugins(JettyPlugin)
libraryDependencies ++= {
val liftVersion = "3.0-M8"
Seq(
"net.liftweb" %% "lift-webkit" % liftVersion % "compile"
)
}
containerLibs in Jetty := {
val liftVersion = "3.0-M8"
Seq(
"org.eclipse.jetty" % "jetty-webapp" % "9.2.1.v20140609",
"org.eclipse.jetty" % "jetty-plus" % "9.2.1.v20140609",
"org.eclipse.jetty" % "jetty-runner" % "9.2.1.v20140609" intransitive()
)
}
containerMain in Jetty := "org.eclipse.jetty.runner.Runner"
I have been fighting with this for the past few hours and I haven't made any headway at all. It seems no matter what I do, I keep getting the same error.
java.lang.NoClassDefFoundError: play/Project$
My build.sbt
name := "appname"
version := "1.0-SNAPSHOT"
libraryDependencies ++= Seq(
jdbc,
anorm,
cache,
filters,
"org.postgresql" % "postgresql" % "9.3-1100-jdbc4",
"org.mindrot" % "jbcrypt" % "0.3m",
"org.webjars" %% "webjars-play" % "2.3.0-2",
"org.webjars" % "foundation" % "5.3.0",
"org.scalaj" %% "scalaj-http" % "0.3.16"
)
lazy val root = (project in file(".")).enablePlugins(PlayScala)
scalaVersion := "2.10.4"
I have also tried this build.sbt
object ApplicationBuild extends Build {
val appName = "appname"
val appVersion = "1.0-SNAPSHOT"
val appDependencies ++= Seq(
jdbc,
anorm,
cache,
filters,
"org.postgresql" % "postgresql" % "9.3-1100-jdbc4",
"org.mindrot" % "jbcrypt" % "0.3m",
"org.webjars" %% "webjars-play" % "2.3.0-2",
"org.webjars" % "foundation" % "5.3.0",
"org.scalaj" %% "scalaj-http" % "0.3.16"
)
val main = Project(appName, file(".")).enablePlugins(play.PlayScala).settings(
scalaVersion := "2.10.4",
version := appVersion,
libraryDependencies ++= appDependencies
)
}
As well as different tweaks and modifications. Always the same error. The build.properties is set to sbt.version=0.13.5
plugins.sbt
logLevel := Level.Debug
// The Typesafe repository
resolvers += "Typesafe repository" at "http://repo.typesafe.com/typesafe/releases/"
// Use the Play sbt plugin for Play projects
addSbtPlugin("com.typesafe.play" % "sbt-plugin" % "2.3.4")
After running Patrick Mahoney's suggestion and making sure I removed the import.
Errors:
[error] java.lang.NoClassDefFoundError: play/Project$
[error] Use 'last' for the full log.
Project loading failed: (r)etry, (q)uit, (l)ast, or (i)gnore? q
me#me-desktop:~/Projects/appname$ sbt --version
sbt launcher version 0.13.6
me#me-desktop:~/Projects/appname$ find . | grep -r "play.Project"
me#me-desktop:~/Projects/appname$ find . | grep -r "play/Project"
Try cleaning your build project compiled outputs:
rm -rf project/target
or
$> sbt "reload plugins" clean
(in addition to applying James' answer)
Thanks to James and Patrick, but I found the problem. The problem was in the activator-sbt-echo-play-shim.sbt file in the /project directory.
It contained the following:
addSbtPlugin("com.github.mpeltonen" % "sbt-idea" % "0.1.1.3")
I created a second blank 2.3.4 app using Activator and it's activator-sbt-echo-play-shim.sbt listed:
addSbtPlugin("com.github.mpeltonen" % "sbt-idea" % "1.5")
So I updated the one in my project to 1.5 and deleted the idea and eclipse .sbts for good measure and the app was finally able to compile. It auotmatically updated the above to:
addSbtPlugin("com.github.mpeltonen" % "sbt-idea" % "1.5.2")
Now I have other, more expected, issues I need to work out (like anorm). But I'm now able to compile it and get those errors to start working them out. I did not think these files were part of the activator/sbt compile, but I guess they were. I thought they were for debugging. But they made the difference and the changes above worked.
Thanks again to everyone for their help.
Make sure you've updated project/build.properties to have sbt version 0.13.5. Then, remove import play.Project._, it's not needed. That should work.
I am new to scala and am currently trying to setup IntelliJ IDEA 13.1 with the Scala plugin. It has support for SBT. I have simply followed the basic tutorial for creating a new project for SBT here: http://confluence.jetbrains.com/display/IntelliJIDEA/Getting+Started+with+SBT
Currently my build.sbt file is:
name := "scalasandpit"
version := "1.0"
scalaVersion := "2.10"
libraryDependencies += "org.scalatest" % "scalatest_2.10" % "2.1.0" % "test"
autoAPIMappings := true
This pulls down various jar binaries, but no sources and no javadoc. I wondered if there is a way to have both sources and javadoc work with IntelliJ and SBT. I think I'm missing something.
There seem to be two issues: getting sbt to pull down sources and docs, and then getting Idea to show them to you. To solve the former problem see the sbt documentation -- about half way down there's a section called "Download Sources" which tells you what to add to your build.sbt:
libraryDependencies +=
"org.scalatest" % "scalatest_2.10" % "2.1.0" % "test" withSources() withJavadoc()
I am building a simple Scala project with SBT 0.11.
All the code files are in ~/MyProject/src/main/scala/
~/MyProject/build.sbt is the following
name := "MyProject"
version := "1.0"
scalaVersion := "2.9.1"
libraryDependencies ++= Seq(
"mysql" % "mysql-connector-java" % "5.1.+",
"c3p0" % "c3p0" % "0.9.1.2",
"org.apache.commons" % "commons-lang3" % "3.0.1",
"commons-lang" % "commons-lang" % "2.6",
"javassist" % "javassist" % "3.12.1.GA"
)
~/MyProject/project/Build.scala is the following
import sbt._
object MyProjectBuild extends Build {
lazy val MyProject = Project("MyProject", file("."))
}
This seems to work almost fine. The project does compile and run. The project name is set correctly (if I don't use Build.scala, then the name seems to appear something like "default-????", despite it being specified in build.sbt).
But the problem is that dependencies do not seem to work - update command doesn't download anything. How to fix this? Do I need to specify my dependencies in Build.scala rather than in build.sbt in this case?
Is it possible that you've already retrieved the project dependencies, but don't realize it because they are stored in the Ivy cache? You can view the managed classpath from the SBT console with the command
show managed-classpath
Recent versions of SBT do not store the managed dependencies in the project directory, unless the project is configured to do so. If you want, you can add the following to your build.sbt file:
retrieveManaged := true
This will create a ~/MyProject/lib_managed/ directory and contents.
What I have so far:
.bashrc
2 PATH=/opt/scala-2.9.1.final/bin:$PATH
3 PATH=/opt/sbt:$PATH
So my scala-2.9.1.final version is in the /opt folder. The same goes with sbt 0.10.
I'm trying to get it to pick my 2.9.1.final instead of 2.8 whatever. I've tried looking.
What i've done so far is putting symbolic links in projectname/boot/ directory.
ln -s /opt/scala-2.9.1.final scala-2.9.1.final
But it doesn't seem to work? I've also tried this build.sbt (https://github.com/VonC/xsbt-template/blob/master/build.sbt) and change the version to 2.9.1.final.
How do I get sbt>console to use 2.9.1.final? And how does it build using 2.9.1.final?
This is what I get when I type sbt:
user#acomputer:~/project/sbt$ sbt
[info] Set current project to default-295917 (in build file:/home/user/project/sbt/)
>
Thank you for your time.
I'm not experienced sbt user and may only suggest. Seems sbt 0.10.x use scala 2.8.1 itself, so I think sbt console is working by default with this version.
But you can build project with targetting on 2.9.1 by specify scala version in you build.sbt file: `scalaVersion := "2.9.1"' (see https://github.com/harrah/xsbt/wiki/Setup "ConfigureBuild")
And also you can switch scala version used by sbt console by typing "++ 2.9.1" in sbt prompt. (see https://github.com/harrah/xsbt/wiki/Running)
Here's an example of an build.sbt in one of my projects.
organization := "com.andyczerwonka"
name := "esi.intelligence"
version := "0.1"
scalaVersion := "2.9.1"
retrieveManaged := false
logLevel := Level.Info
jettyScanDirs := Nil
seq(webSettings :_*)
temporaryWarPath <<= (sourceDirectory in Compile)(_ / "webapp")
libraryDependencies ++= {
val liftVersion = "2.4-M4"
Seq(
"net.liftweb" %% "lift-webkit" % liftVersion % "compile->default",
"net.liftweb" %% "lift-mapper" % liftVersion % "compile",
"org.eclipse.jetty" % "jetty-webapp" % "7.3.0.v20110203" % "provided,jetty",
"junit" % "junit" % "4.8" % "test",
"ch.qos.logback" % "logback-classic" % "0.9.26",
"org.specs2" %% "specs2" % "1.6.1" % "test",
"net.databinder" %% "dispatch-http" % "0.8.5",
"com.h2database" % "h2" % "1.2.138"
)
}
Notice the 4th line. This tells sbt that I want to use 2.9.1. sbt will bring it down for me and use it.