如何在build.sbt中添加依赖项目以运行sbt编译

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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proj B上进行sbt编译时，它抛出错误，依赖类找不到。类Hbase在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

在建议之后更新了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"

)

libraryDependencies += "org.springframework.boot" % "spring-boot-starter- 
web" % "2.1.6.RELEASE"

“；”应为，但在projB设置中为该行抛出了找到的字符串文本。

我对这个错误一无所知。

Answer 1

查看您发布的两个片段，我猜您有两个单独的build.sbt文件，每个子项目一个。这使得它们独立，一个项目只是看不到另一个项目。虽然可以为子项目提供多个build.sbt文件，但建议在项目根目录中的单个build.sbt文件中定义整个multiproject构建。

例如，如果您的项目结构如下：

├── project
│  ├── build.properties
│  └── plugins.sbt
├── projA
│  └── src
├── projB
│  └── src
└── build.sbt

然后可以将所有构建设置和子项目关系放在根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
  )

lazy val projB = project
  .dependsOn(projA)
  .settings(
    // project B settings and library dependencies
  )