我在公司代理后面工作，因此我正在使用proxy repositories。它工作正常，但仅适用于build.sbt中定义的依赖项。对于插件所需的依赖项（用addSbtPlugin声明），代理存储库仅在依赖项具有ivy.xml的情况下有效。如果仅由*.pom个文件定义，则无法解析，例如com.eed3si9n:sbt-assembly插件的传递依赖项：
[warn] ::::::::::::::::::::::::::::::::::::::::::::::
[warn] :: UNRESOLVED DEPENDENCIES ::
[warn] ::::::::::::::::::::::::::::::::::::::::::::::
[warn] :: org.scalactic#scalactic_2.12;3.0.1: Resolution failed several times for dependency: org.scalactic#scalactic_2.12;3.0.1 {compile=
[default(compile)]}::
[warn] typesafe-ivy-releases: unable to get resource for org.scalactic#scalactic_2.12;3.0.1: res=https://repo.typesafe.com/typesafe/ivy-releases/org.scalactic/scalactic_2.12/3.0.1/ivys/ivy.xml: java.net.UnknownHostException: repo.typesafe.com
[warn] sbt-plugin-releases: unable to get resource for org.scalactic#scalactic_2.12;3.0.1: res=https://repo.scala-sbt.org/scalasbt/sbt-plugin-releases/org.scalactic/scalactic_2.12/3.0.1/ivys/ivy.xml: java.net.UnknownHostException: repo.scala-sbt.org
[warn] typesafe-ivy-releases: unable to get resource for org.scalactic#scalactic_2.12;3.0.1: res=https://repo.typesafe.com/typesafe/ivy-releases/org.scalactic/scalactic_2.12/3.0.1/bundles/scalactic_2.12.jar: java.net.UnknownHostException: repo.typesafe.com
[warn] ::::::::::::::::::::::::::::::::::::::::::::::
[warn] Note: Unresolved dependencies path:
[warn] org.scalactic:scalactic_2.12:3.0.1
[warn] +- com.eed3si9n:sbt-assembly:0.14.6 (scalaVersion=2.12, sbtVersion=1.0) (C:\<path to the project>\project\assembly.sbt#L1-2)
SBT在org.scalactic中创建.ivy2/cache目录，并添加两个文件：
.ivy2/cache
|___org.scalactic
|___scalactic_2.12
|___ivy-3.0.1.xml.original
|___ivydata-3.0.1.properties
SBT可能会生成该文件，因为在存储库中只有以下内容：
scalactic_2.12-3.0.1-javadoc.jar 10-Nov-2016 00:50 1.82 MB
scalactic_2.12-3.0.1-javadoc.jar.asc-> - -
scalactic_2.12-3.0.1-javadoc.jar.asc.md5-> - -
scalactic_2.12-3.0.1-javadoc.jar.asc.sha1-> - -
scalactic_2.12-3.0.1-javadoc.jar.md5 10-Nov-2016 00:50 32 bytes
scalactic_2.12-3.0.1-javadoc.jar.sha1 10-Nov-2016 00:50 40 bytes
scalactic_2.12-3.0.1-sources.jar 10-Nov-2016 00:50 196.37 KB
scalactic_2.12-3.0.1-sources.jar.asc-> - -
scalactic_2.12-3.0.1-sources.jar.asc.md5-> - -
scalactic_2.12-3.0.1-sources.jar.asc.sha1-> - -
scalactic_2.12-3.0.1-sources.jar.md5 10-Nov-2016 00:50 32 bytes
scalactic_2.12-3.0.1-sources.jar.sha1 10-Nov-2016 00:50 40 bytes
scalactic_2.12-3.0.1.jar 10-Nov-2016 00:50 689.03 KB
scalactic_2.12-3.0.1.jar.asc-> - -
scalactic_2.12-3.0.1.jar.asc.md5-> - -
scalactic_2.12-3.0.1.jar.asc.sha1-> - -
scalactic_2.12-3.0.1.jar.md5 10-Nov-2016 00:50 32 bytes
scalactic_2.12-3.0.1.jar.sha1 10-Nov-2016 00:50 40 bytes
scalactic_2.12-3.0.1.pom 10-Nov-2016 00:50 2.18 KB
scalactic_2.12-3.0.1.pom.asc-> - -
scalactic_2.12-3.0.1.pom.asc.md5-> - -
scalactic_2.12-3.0.1.pom.asc.sha1-> - -
scalactic_2.12-3.0.1.pom.md5 10-Nov-2016 00:50 32 bytes
scalactic_2.12-3.0.1.pom.sha1 10-Nov-2016 00:50 40 bytes
我们可以看到SBT读取了*.pom文件，但是却做了一些奇怪的事情：
（注意：maven-central是repositories文件中为模式指定的名称）
tried http://<path to repository>/artifactory/maven-central/org/scalactic/scalactic_2.12/3.0.1/scalactic_2.12-3.0.1.pom
maven-central: found md file for org.scalactic#scalactic_2.12;3.0.1
=> http://<path to repository>/artifactory/maven-central/org/scalactic/scalactic_2.12/3.0.1/scalactic_2.12-3.0.1.pom (3.0.1)
downloading http://<path to repository>/artifactory/maven-central/org/scalactic/scalactic_2.12/3.0.1/scalactic_2.12-3.0.1.pom ...
maven-central: downloading http://<path to repository>/artifactory/maven-central/org/scalactic/scalactic_2.12/3.0.1/scalactic_2.12-3.0.1.pom
maven-central: downloading http://<path to repository>/artifactory/maven-central/org/scalactic/scalactic_2.12/3.0.1/scalactic_2.12-3.0.1.pom.sha1
sha1 OK for http://<path to repository>/artifactory/maven-central/org/scalactic/scalactic_2.12/3.0.1/scalactic_2.12-3.0.1.pom
[SUCCESSFUL ] org.scalactic#scalactic_2.12;3.0.1!scalactic_2.12.pom(pom.original) (330ms)
tried https://repo.typesafe.com/typesafe/ivy-releases/org.scalactic/scalactic_2.12/3.0.1/bundles/scalactic_2.12.jar
problem occurred while resolving dependency: org.scalactic#scalactic_2.12;3.0.1 {compile=[default(compile)]} with maven-central: java.lang.RuntimeException: typesafe-ivy-releases: unable to get resource for org.scalactic#scalactic_2.12;3.0.1: res=https://repo.typesafe.com/typesafe/ivy-releases/org.scalactic/scalactic_2.12/3.0.1/bundles/scalactic_2.12.jar: java.net.UnknownHostException: repo.typesafe.com
最终失败：
[error] typesafe-ivy-releases: unable to get resource for org.scalactic#scalactic_2.12;3.0.1: res=https://repo.typesafe.com/typesafe/ivy-releases/org.scalactic/scalactic_2.12/3.0.1/bundles/scalactic_2.12.jar: java.net.UnknownHostException: repo.typesafe.com
Project loading failed: (r)etry, (q)uit, (l)ast, or (i)gnore? q
无法启动（ignore无济于事）。
我有一种解决方法：
build.sbt sbt compile 通过这种方式可以解决依赖关系并将其存储到.ivy2/cache：
[info] downloading http://<path to repository>/artifactory/maven-central/org/scalactic/scalactic_2.12/3.0.1/scalactic_2.12-3.0.1.jar ...
[info] [SUCCESSFUL ] org.scalactic#scalactic_2.12;3.0.1!scalactic_2.12.jar(bundle) (1138ms)
[info] Done updating.
然后我删除了伪代码，它基于缓存的依赖项工作。出于明显的原因，我不喜欢这种“解决方案”。
如果有人可以回答我的问题，我将不胜感激：
ivy.xml就解决依赖关系（与编译时一样）？非常感谢！