Sbt——安装、配置、详细使用

一、安装

安装包地址：https://pan.baidu.com/s/1x42iv4MGJBhGhfJ2gt2eVg 提取码：ihyr
不建议用sdkman安装，官网建议用，但考虑到天国的网络状态，sdk经常不在线，建议还是本地安装吧！

1.官网yum安装

[root@master sbt]# curl https://bintray.com/sbt/rpm/rpm |  tee /etc/yum.repos.d/bintray-sbt-rpm.repo
  % Total    % Received % Xferd  Average Speed   Time    Time     Time  Current
                                 Dload  Upload   Total   Spent    Left  Speed
100   160    0   160    0     0     74      0 --:--:--  0:00:02 --:--:--    74
#bintray--sbt-rpm - packages by  from Bintray
[bintray--sbt-rpm]
name=bintray--sbt-rpm
baseurl=https://sbt.bintray.com/rpm
gpgcheck=0
repo_gpgcheck=0
enabled=1
[root@master sbt]# yum install sbt -y
[root@master sbt]# rpm -ql sbt
/usr
/usr/share
/usr/share/doc
/usr/share/doc/sbt
/usr/share/doc/sbt/copyright
/usr/share/man
/usr/share/man/man1
/usr/share/man/man1/sbt.1.gz
/usr/share/sbt/LICENSE
/usr/share/sbt/NOTICE
/usr/share/sbt/bin
/usr/share/sbt/bin/java9-rt-export.jar
/usr/share/sbt/bin/sbt
/usr/share/sbt/bin/sbt-launch.jar
/usr/share/sbt/conf
/usr/share/sbt/conf/sbtconfig.txt
/usr/share/sbt/conf/sbtopts

2.加速设置

[root@master sbt]# pwd
 /usr/share/sbt/
[root@master sbt]# ls
bin  conf  lib  LICENSE  NOTICE  repository
[root@master sbt]# vim repository 
[repositories]
local
maven-local: file://~/.m2/repository
osc: http://maven.oschina.net/content/groups/public/
typesafe: http://repo.typesafe.com/typesafe/ivy-releases/, [organization]/[module]/(scala_[scalaVersion]/)(sbt_[sbtVersion]/)[revision]/[type]s/[artifact](-[classifier]).[ext], bootOnly
sonatype-oss-releases
maven-central
sonatype-oss-snapshots
或者
[repositories]
local
aliyun-nexus: http://maven.aliyun.com/nexus/content/groups/public/  
ibiblio-maven: http://maven.ibiblio.org/maven2/
typesafe-ivy: https://dl.bintray.com/typesafe/ivy-releases/, [organization]/[module]/(scala_[scalaVersion]/)(sbt_[sbtVersion]/)[revision]/[type]s/[artifact](-[classifier]).[ext]
uk-repository: http://uk.maven.org/maven2/
jboss-repository: http://repository.jboss.org/nexus/content/groups/public/
typesafe: http://repo.typesafe.com/typesafe/ivy-releases/, [organization]/[module]/(scala_[scalaVersion]/)(sbt_[sbtVersion]/)[revision]/[type]s/[artifact](-[classifier]).[ext], bootOnly
sonatype-oss-releases
maven-central
sonatype-oss-snapshots
又或者
[repositories]
  local
  comp-maven: http://repo.data.1verge.net/nexus/content/groups/public/
  store_cn: http://maven.oschina.net/content/groups/public/
  store_mir: http://mirrors.ibiblio.org/maven2/
  store_0: http://maven.net.cn/content/groups/public/
  store_1: http://repo.typesafe.com/typesafe/ivy-releases/
  store_2: http://repo2.maven.org/maven2/
 又或者
 [repositories]
local
huaweicloud-maven: https://repo.huaweicloud.com/repository/maven/
maven-central: https://repo1.maven.org/maven2/
sbt-plugin-repo: https://repo.scala-sbt.org/scalasbt/sbt-plugin-releases, [organization]/[module]/(scala_[scalaVersion]/)(sbt_[sbtVersion]/)[revision]/[type]s/[artifact](-[classifier]).[ext]

3.测试

[root@master ~]# echo export SBT_HOME=/share/sbt/
[root@master ~]# echo export PATH=\$SBT_HOME:\$PATH

修改 $SBT_HOME/bin/sbt
SBT_OPTS可以添加选项和配置参数，也可在命令行在写入

[root@master ~]# vim  $SBT_HOME/bin/sbt
SBT_OPTS="-Xms512M -Xmx1536M -Xss1M -XX:+CMSClassUnloadingEnabled -XX:MaxPermSize=256M"
java $SBT_OPTS -jar `dirname $0`/sbt-launch.jar "$@"

[root@master bin]# sbt sbtVersion
Java HotSpot(TM) 64-Bit Server VM warning: ignoring option MaxPermSize=256M; support was removed in 8.0
[warn] No sbt.version set in project/build.properties, base directory: /share/sbt/bin
[info] Set current project to bin (in build file:/share/sbt/bin/)
[info] 1.3.8

二、使用

1.配置选项

[root@master ~]# vim $SBT_HOME/conf/sbtopts
#sbt工作文件夹.
-sbt-dir
-Dsbt.global.base=~/.sbt

#仓库位置
-ivy
-Dsbt.ivy.home=~/.ivy2

#boot位置
-sbt-boot
-Dsbt.boot.directory=~/.sbt/boot

#加速器位置
-Dsbt.repository.config=~/.sbt/repositories
-Dsbt.repository.secure=false

-Dsbt.log.format=true

#强制覆盖默认的仓库
-Dsbt.override.build.repos=true

#设置网络代理
-Dhttp.proxyHost=proxy.zte.com.cn
-Dhttp.proxyPort=80

#设置编码
-Dfile.encoding=UTF8

2.插件配置

插件路径和文件名都需要创建。
在eclipse中使用sbt相应的配置文件，需要安装sbteclipse插件，sbteclipse插件会依据sbt的配置生成eclipse项目需要的文件。
[root@master ~]# vim ~/.sbt/1.0/plugins/plugins.sbt
addSbtPlugin(“com.typesafe.sbteclipse” % “sbteclipse-plugin” % “5.2.4”)

3.生成项目架构

ProjectName (base directory)
    build.sbt
    .gitignore  (用于忽略文件或目录)
    project/
        xx.scala (defines helper objects and one-off plugins，辅助对象和一次性插件)
        xx.sbt (并不等价于基本目录下的sbt文件)
    src/
        main/
            resources/ (files to include in main jar here)
            scala/ (main scala sources)
            java/ (main java sources)
        test/
            resources/ (files to include in test jar here)
            scala/ (test scala sources)
            java/ (test java sources)

    target/ (generated files, like compiled classes, packaged jars, managed files, caches, and documentation)

4.常用操作

编译并运行所有的测试用例

[root@master ~]# test

启动一个 Scala 语言交互模式， sbt 在启动的时候会指定依赖的所有classpath, 返回 sbt 可以用 :quit 、 Ctrl+D(Unix) 和 Ctrl+Z(Windows)

[root@master ~]# console

运行项目在虚拟机中

[root@master ~]# run *

创建一个 jar 包其中包含 src/main/resources 和编译 src/main/scala 或 src/main/java 目录的 class 文件

[root@master ~]# package

重新加载配置文件(build.sbt， project/.scala 和 project/.sbt 文件)

[root@master ~]# reload

quit console

[root@master ~] scala> :q // to quit

new project

[root@master ~]# mkdir foo-build
[root@master ~]# cd foo-build
[root@master ~]#t ouch build.sbt
[root@master ~]# sbt
[root@master ~]# sbt:foo-build> exit

compile project

sbt:foo-build> compile

recompile project

sbt:foo-build> ~compile

new scala object and run scala programe

[root@master ~]# mkdir foo-build/src/main/scala/exampl
[root@master ~]# vim -/Hello.scala 
package example
object Hello extends App {
  println("Hello")
}
[root@master ~]# sbt:foo-build> run

Set ThisBuild / scalaVersion from sbt shell

[root@master ~]# sbt:foo-build> set ThisBuild / scalaVersion := "2.12.7"

show the scalaVersion

[root@master ~]# sbt:foo-build> scalaVersion

显示项目配置 show，能show+tab能show出来很多

#查看当前项目的名字
[root@master ~]# show name
#查看当前项目依赖的库
[root@master ~]# show libraryDependencies

Save the session to build.sbt

[root@master ~]# sbt:foo-build> session save
[root@master ~]# sbt:scala1> session 
clear       clear-all   list        list-all    remove      save        save-all  

Named project

[root@master ~]# vim build.sbt
ThisBuild / scalaVersion := "2.12.7"
ThisBuild / organization := "com.example"

lazy val hello = (project in file("."))
  .settings(
    name := "Hello"
  )
  
#after named，Reload the build 
[root@master ~]# sbt:foo-build> reload

Add ScalaTest to libraryDependencies

[root@master ~]# vim build.sbt
ThisBuild / scalaVersion := "2.12.7"
ThisBuild / organization := "com.example"

lazy val hello = (project in file("."))
  .settings(
    name := "Hello",
    libraryDependencies += "org.scalatest" %% "scalatest" % "3.0.5" % Test,
  )
[root@master ~]# sbt:Hello> reload
[root@master ~]# sbt:Hello> test
[root@master ~]# sbt:Hello> ~testQuick

Write a test

[root@master ~]# vim  src/test/scala/HelloSpec.scala 
import org.scalatest._
class HelloSpec extends FunSuite with DiagrammedAssertions {
  test("Hello should start with H") {
    assert("hello".startsWith("H"))
  }
}

[root@master ~]#  ~testQuick  
#Confirm that the test passes, then press Enter to exit the continuous test.

Add a library dependency

[root@master ~]# vim build.sbt
ThisBuild / scalaVersion := "2.12.7"
ThisBuild / organization := "com.example"

lazy val hello = (project in file("."))
  .settings(
    name := "Hello",
    libraryDependencies += "com.typesafe.play" %% "play-json" % "2.6.9",
    libraryDependencies += "com.eed3si9n" %% "gigahorse-okhttp" % "0.3.1",
    libraryDependencies += "org.scalatest" %% "scalatest" % "3.0.5" % Test,
  )

Use Scala REPL（Read-Eval-Print Loop）

[root@master ~]# sbt:Hello> console
[info] Starting scala interpreter...
Welcome to Scala 2.12.7 (Java HotSpot(TM) 64-Bit Server VM, Java 1.8.0_171).
Type in expressions for evaluation. Or try :help.

scala> :paste
// Entering paste mode (ctrl-D to finish)

import scala.concurrent._, duration._
import gigahorse._, support.okhttp.Gigahorse
import play.api.libs.json._

Gigahorse.withHttp(Gigahorse.config) { http =>
  val baseUrl = "https://www.metaweather.com/api/location"
  val rLoc = Gigahorse.url(baseUrl + "/search/").get.
    addQueryString("query" -> "New York")
  val fLoc = http.run(rLoc, Gigahorse.asString)
  val loc = Await.result(fLoc, 10.seconds)
  val woeid = (Json.parse(loc) \ 0 \ "woeid").get
  val rWeather = Gigahorse.url(baseUrl + s"/$woeid/").get
  val fWeather = http.run(rWeather, Gigahorse.asString)
  val weather = Await.result(fWeather, 10.seconds)
  ({Json.parse(_: String)} andThen Json.prettyPrint)(weather)
}

// press Ctrl+D

// Exiting paste mode, now interpreting.

scala> :q // to quit

Make a subproject

[root@master ~]# vim build.sbt
ThisBuild / scalaVersion := "2.12.7"
ThisBuild / organization := "com.example"

lazy val hello = (project in file("."))
  .settings(
    name := "Hello",
    libraryDependencies += "com.eed3si9n" %% "gigahorse-okhttp" % "0.3.1",
    libraryDependencies += "org.scalatest" %% "scalatest" % "3.0.5" % Test,
  )

lazy val helloCore = (project in file("core"))
  .settings(
    name := "Hello Core",
  )

List all subprojects

[root@master ~]# sbt:Hello> projects
[info] In file:/tmp/foo-build/
[info]   * hello
[info]     helloCore

Compile the subproject

[root@master ~]# sbt:Hello> helloCore/compile

Add ScalaTest to the subproject

[root@master ~]# vim build.sbt 
ThisBuild / scalaVersion := "2.12.7"
ThisBuild / organization := "com.example"

val scalaTest = "org.scalatest" %% "scalatest" % "3.0.5"

lazy val hello = (project in file("."))
  .settings(
    name := "Hello",
    libraryDependencies += "com.eed3si9n" %% "gigahorse-okhttp" % "0.3.1",
    libraryDependencies += scalaTest % Test,
  )

lazy val helloCore = (project in file("core"))
  .settings(
    name := "Hello Core",
    libraryDependencies += scalaTest % Test,
  )

未完待续

https://www.scala-sbt.org/release/docs/sbt-by-example.html

…

————Blueicex 2020/2/12 12:40 [email protected]