sbt与maven简单对比

sbt vs maven

sbt项目用ivy2,可以使用maven的包

sbt可以进行增量编译，这个特性还是非常有吸引力，因为scala的编译速度是堪比c++的

sbt提供了一个scala的console，并且导入默认的一些包，非常方便的交互

sbt在插件上支持的并不是那么好，很多maven中好用的功能，需要用额外的插件，比如

mvn dependency:tree

ps:最新版的不需要plugin ,运行sbt test:compile即可，会出现在target/resolution-cache/reports下各种非常详细的报告

sbt与maven常见命令对比

mvn	sbt
install	publishLocal
deploy	publish
clean	clean
package	packge
compile	compile
test	test
dependency:tree	using plugin
unsupport	console
unsupport	run

sbt与maven配置文件对比：

maven利用pom.xml进行项目管理

配置版本，组织：

maven

<groupId>com.ximalaya</groupId>
<artifactId>testsbtpublish</artifactId>
<version>1.0-SNAPSHOT</version>

sbt

organization := "com.ximalaya"

name := "testsbtpublish"

version := "1.0-SNAPSHOT"

加入额外的源：

maven:

<repositories>
<repository>
<id>scala-tools.org</id>
<name>Scala-Tools Maven2 Repository</name>
<url>http://scala-tools.org/repo-releases</url>
</repository>
</repositories>

sbt:

resolvers += "Sonatype OSS Snapshots" at "https://oss.sonatype.org/content/repositories/snapshots"

格式为：

resolvers += name at location

如果需要加入本地的maven库：

resolvers += "Local Maven Repository" at "file://"+Path.userHome.absolutePath+"/.m2/repository"

或者简写为:

resolvers += Resolver.mavenLocal

build source

maven:

<sourceDirectory>src/main/scala</sourceDirectory>
<resources>
<resource>
<directory>src/main/resource</directory>
</resource>
<resource>
<directory>src/main/conf</directory>
</resource>
</resources>

sbt:

scalaSource in Compile := baseDirectory.value / "src/main/scala"

scalaSource in Test := baseDirectory.value / "src/test"

unmanagedResourceDirectories in Compile += baseDirectory.value / "src/main/resources"

导入依赖包，并排除不需要的jar包

maven:

<dependency>
<groupId>org.apache.spark</groupId>
<artifactId>spark-core_2.10</artifactId>
<version>${spark.version}</version>
<exclusions>
<exclusion>
<groupId>javax.servlet</groupId>
<artifactId>*</artifactId>
</exclusion>
</exclusions>
</dependency>

sbt:

libraryDependencies ++= Seq(
"org.apache.spark" % "spark-core_2.11" % "1.5.0"
)

"log4j" % "log4j" % "1.2.15" excludeAll(
ExclusionRule(organization = "com.sun.jdmk"),
ExclusionRule(organization = "com.sun.jmx"),
ExclusionRule(organization = "javax.jms")

其中：

def exclude(org: String, name: String) = excludeAll(ExclusionRule(org, name))

发布：

maven:

<distributionManagement>
<repository>
<id>artifactory</id>
<name>xxxxxx</name>
<url>http://artifactory.xxxxxx.com/artifactory/xxxxxx/</url>
</repository>
<snapshotRepository>
<id>artifactory</id>
<name>xxxxxx</name>
<url>http://artifactory.xxxxxxx.com/artifactory/xxxxxxx/</url>
</snapshotRepository>
</distributionManagement>

sbt:

publishTo := {
val nexus = "http://artifactory.xxxxxx.com/artifactory/"
if (isSnapshot.value)
Some("snapshots" at nexus + "snapshots")
else
Some("releases"  at nexus + "releases")
}
//授权
credentials += Credentials(Path.userHome / ".ivy2" / ".credentials")

其中授权文件为:

realm=Artifactory Realm
host=host
user=userName
password=passWord

测试：

maven:

<dependency>
<groupId>org.scalatest</groupId>
<artifactId>scalatest_2.11</artifactId>
<version>3.0.0-M16-SNAP3</version>
<scope>test</scope>
</dependency>

sbt:

libraryDependencies += "org.scalatest" % "scalatest_2.11" % "3.0.0-M16-SNAP3" % "test"

sbt plugins

全局plugins:

~/.sbt/0.13/plugins/plugin.sbt

树形：

addSbtPlugin("net.virtual-void" % "sbt-dependency-graph" % "0.8.2")