类路径中缺少符号'type shapeless.LeftFolder‘

Question

快来帮帮忙。在编译过程中，我得到了以下几组错误；

Error:(38, 21) Symbol 'type shapeless.HListerAux' is missing from the classpath.
This symbol is required by 'value spray.routing.directives.ParamDefMagnet2.hla'.
Make sure that type HListerAux is in your classpath and check for conflicting dependencies with `-Ylog-classpath`.
A full rebuild may help if 'ParamDefMagnet2.class' was compiled against an incompatible version of shapeless.
          parameter('id) { id =>

Error:(38, 21) Symbol 'type shapeless.Poly.Case2' is missing from the classpath.
This symbol is required by 'method spray.routing.directives.ParamDefMagnet2.MapReduce.from'.
Make sure that type Case2 is in your classpath and check for conflicting dependencies with `-Ylog-classpath`.
A full rebuild may help if 'ParamDefMagnet2.class' was compiled against an incompatible version of shapeless.Poly.
          parameter('id) { id =>

Error:(38, 21) Symbol 'type shapeless.PrependAux' is missing from the classpath.
This symbol is required by 'value spray.routing.directives.ParamDefMagnet2.MapReduce.ev'.
Make sure that type PrependAux is in your classpath and check for conflicting dependencies with `-Ylog-classpath`.
A full rebuild may help if 'ParamDefMagnet2.class' was compiled against an incompatible version of shapeless.
          parameter('id) { id =>

Error:(38, 21) Symbol 'type shapeless.HListerAux' is missing from the classpath.
This symbol is required by 'value spray.routing.directives.ParamDefMagnet2.hla'.
Make sure that type HListerAux is in your classpath and check for conflicting dependencies with `-Ylog-classpath`.
A full rebuild may help if 'ParamDefMagnet2.class' was compiled against an incompatible version of shapeless.
          parameter('id) { id =>

尽管概括地说，问题在于“无形”，这是一个库，我已经将它作为一个依赖项(与解析器一起)，

resolvers ++= Seq(
  Resolver.sonatypeRepo("releases"),
  Resolver.sonatypeRepo("snapshots")
)

libraryDependencies ++= Seq(
  "com.chuusai" %% "shapeless" % "2.3.2"
) 

我希望有一个合适的建议作为解决办法。

Answer 1

我知道怎么解决这个问题，我以前也遇到过这个问题。这是问题的非形状版本，仔细阅读下面的嗅觉，您将解决这个问题。

如果您想在您的应用程序中使用非成形和喷雾路由，那么您需要选择针对您想要使用的无形状版本构建的spray(-routing)版本。对于无型1.2.4，您应该使用喷雾1.1.4，1.2.4或1.3.4和喷雾路由模块。不再支持无形状的2.0.0。对于无形状的2.3.0，您应该使用 1.3.4 (Scala2.10或Scala2.11)和喷雾路由-shapeless23模块，而不是使用喷雾路由__。

libraryDependencies ++= "io.spray" %% "spray-routing-shapeless23" % "1.3.4",