我是sbt构建的新手。 我想将依赖项目(例如Proj A)的Java文件添加到我的编译项目(Proj B)中。 在Proj B中运行sbt编译会引发错误,即找不到依赖项目的Java包/类。 我浏览了链接:https://www.scala-sbt.org/0.13/docs/Multi-Project.html,但我不清楚添加此依赖关系使其能够正常工作。
我尝试在build.sbt中添加以下一行,但是没有用。 懒惰的val projB = project.dependsOn(/ projA)
已更新
organization := "com.org"
name := "projB"
version := "1"
resolvers ++= Seq(
"Typesafe" at "http://repo.typesafe.com/typesafe/releases/",
"Java.net Maven2 Repository" at "http://download.java.net/maven/2/",
)
lazy val projB = project.dependsOn(projA)
// the library dependencies of springframework here
organization := "com.org"
name := "proj A"
version := "1"
resolvers ++= Seq(
"Typesafe" at "http://repo.typesafe.com/typesafe/releases/",
"Java.net Maven2 Repository" at "http://download.java.net/maven/2/",
)
// the library dependencies of springframework here
当我在项目B上进行sbt编译时,它会引发错误,未找到相关类。 Hbase类位于Proj A中。
[error] import com.org.config.Hbase;
[error] **\hbase\HbaseDAO.java:38:1:
cannot find symbol
[error] symbol: class Hbase
[error] location: class com.org.hbase.HbaseDAO
[error] private Hbase hbase;
[error] (Compile / compileIncremental) javac returned non-zero exit code
[error] Total time: 6 s, completed 29/08/2019 9:58:39 AM
建议后更新了build.sbt:
inThisBuild(
Seq(
organization := "com.org",
version := "1",
resolvers ++= Seq(
"Typesafe" at "http://repo.typesafe.com/typesafe/releases/",
"Java.net Maven2 Repository" at "http://download.java.net/maven/2/",
)
)
)
lazy val root = project
.in(file("."))
.aggregate(projA,projB)
lazy val projA = project.settings(
// project A settings and library dependencies
libraryDependencies += "org.springframework.boot" % "spring-boot-starter-
parent" % "2.1.6.RELEASE" pomOnly()
libraryDependencies += "org.springframework.boot" % "spring-boot-starter-
web" % "2.1.6.RELEASE"
libraryDependencies += "org.springframework.data" % "spring-data-hadoop-
hbase" % "2.3.0.RELEASE"
libraryDependencies += "org.mortbay.jetty" % "jetty" % "7.0.0.pre5"
libraryDependencies += "io.netty" % "netty-all" % "5.0.0.Alpha2"
libraryDependencies += "commons-beanutils" % "commons-beanutils" % "1.9.4"
libraryDependencies += "commons-beanutils" % "commons-beanutils-core" %
"1.8.3"
libraryDependencies += "xerces" % "xercesImpl" % "2.12.0"
libraryDependencies += "org.apache.hadoop" % "hadoop-yarn-server-
nodemanager" % "3.2.0"
libraryDependencies += "org.apache.hadoop" % "hadoop-common" % "3.2.0"
libraryDependencies += "org.apache.hadoop" % "hadoop-common" % "2.7.0"
libraryDependencies += "org.apache.hadoop" % "hadoop-client" % "3.2.0"
libraryDependencies += "org.apache.hbase" % "hbase-client" % "2.1.1"
libraryDependencies += "org.apache.hbase" % "hbase" % "2.1.1" pomOnly()
libraryDependencies += "org.apache.hbase" % "hbase-common" % "2.1.1"
)
lazy val projB = project
.dependsOn(projA)
.settings(
// project B settings and library dependencies
libraryDependencies += "org.springframework.boot" % "spring-boot-starter-
parent" % "2.1.6.RELEASE" pomOnly()
libraryDependencies += "org.springframework.boot" % "spring-boot-starter-
web" % "2.1.6.RELEASE"
libraryDependencies += "org.springframework.data" % "spring-data-hadoop-
hbase" % "2.3.0.RELEASE"
libraryDependencies += "org.mortbay.jetty" % "jetty" % "7.0.0.pre5"
libraryDependencies += "io.netty" % "netty-all" % "5.0.0.Alpha2"
libraryDependencies += "commons-beanutils" % "commons-beanutils" % "1.9.4"
libraryDependencies += "commons-beanutils" % "commons-beanutils-core" %
"1.8.3"
libraryDependencies += "xerces" % "xercesImpl" % "2.12.0"
libraryDependencies += "org.apache.hadoop" % "hadoop-yarn-server-
nodemanager" % "3.2.0"
libraryDependencies += "com.fasterxml.jackson.core" % "jackson-databind" %
"2.10.0.pr2"
libraryDependencies += "org.apache.hadoop" % "hadoop-common" % "3.2.0"
libraryDependencies += "org.apache.hadoop" % "hadoop-client" % "3.2.0"
libraryDependencies += "org.apache.hbase" % "hbase-client" % "2.1.1"
libraryDependencies += "org.apache.hbase" % "hbase" % "2.1.1" pomOnly()
libraryDependencies += "org.apache.hbase" % "hbase-common" % "2.1.1"
)
在项目设置projA和projB中,以下库依赖项之后sbt编译时引发错误
libraryDependencies += "org.springframework.boot" % "spring-boot-starter-
web" % "2.1.6.RELEASE"
')'预期,但在projA设置和
中为此行抛出了找到的字符串文字';'是预期的,但是在projB设置中为此行抛出了找到的字符串文字。
我不太了解这个错误。
答案 0 :(得分:1)
看看您发布的两个代码段,我猜您有两个单独的build.sbt
文件,每个子项目一个。这使它们独立,而一个项目看不到另一个。虽然子项目可能有多个build.sbt
文件,但建议在项目根目录的单个build.sbt
文件中定义整个多项目构建。
例如,如果您按以下方式构建项目:
├── project
│ ├── build.properties
│ └── plugins.sbt
├── projA
│ └── src
├── projB
│ └── src
└── build.sbt
然后,您可以将所有构建设置和子项目关系放在根build.sbt
中:
inThisBuild(
Seq(
organization := "com.org",
version := "1",
resolvers ++= Seq(
"Typesafe" at "http://repo.typesafe.com/typesafe/releases/",
"Java.net Maven2 Repository" at "http://download.java.net/maven/2/",
)
)
)
lazy val root = project
.in(file("."))
.aggregate(projA, projB)
lazy val projA = project
.settings(
// project A settings and library dependencies
)
lazy val projB = project
.dependsOn(projA)
.settings(
// project B settings and library dependencies
)
然后,如果您从项目的根目录启动sbt shell,则可以调用compile
(或任何其他任务)来编译projA
和projB
,或者可以调用projA/compile
专门编译该子项目。
您已经在阅读文档,因此您知道在哪里可以找到更多信息。请注意,您提供的链接指向旧文档,在顶部有一个横幅指向新页面:https://www.scala-sbt.org/1.x/docs/Multi-Project.html