scala.MatchError：有机\阿帕奇\公地\ IO \ IOCase.class在SBT +组件

Question

当我用户SBT组件，它打印错误是这样的（类java.lang.String的）：

[error] (*:assembly) scala.MatchError: org\apache\commons\io\IOCase.class (of class java.lang.String) 

而这些是我的配置：

1，assembly.sbt：

import AssemblyKeys._ 
assemblySettings 
mergeStrategy in assembly := { 
    case PathList("org", "springframework", xs@_*) => MergeStrategy.last 
} 

2，bulid.sbt

import AssemblyKeys._ 
lazy val root = (project in file(".")). 
    settings(
    name := "DmpRealtimeFlow", 
    version := "1.0", 
    scalaVersion := "2.11.8", 
    libraryDependencies += "com.jd.ads.index" % "ad_index_dmp_common" % "0.0.4-SNAPSHOT", 
    libraryDependencies += "org.apache.spark" % "spark-core_2.11" % "2.1.0" % "provided", 
    libraryDependencies += "org.apache.spark" % "spark-sql_2.11" % "2.1.0" % "provided", 
    libraryDependencies += "org.apache.spark" % "spark-streaming_2.11" % "2.1.0" % "provided", 
    libraryDependencies += "mysql" % "mysql-connector-java" % "5.1.8", 
    libraryDependencies += "org.springframework" % "spring-beans" % "3.1.0.RELEASE", 
    libraryDependencies += "org.springframework" % "spring-context" % "3.1.0.RELEASE", 
    libraryDependencies += "org.springframework" % "spring-core" % "3.1.0.RELEASE", 
    libraryDependencies += "org.springframework" % "spring-orm" % "3.1.0.RELEASE", 
    libraryDependencies += "org.mybatis" % "mybatis" % "3.2.1" % "compile", 
    libraryDependencies += "org.mybatis" % "mybatis-spring" % "1.2.2", 
    libraryDependencies += "c3p0" % "c3p0" % "0.9.1.2" 
) 

3，项目工具：

sbt:0.13.5 
assembly:0.11.2 
java:1.7 
scala:2.11.8 

任何帮助吗？

Answer 1

该问题可能是在装配块中mergeStrategy缺少缺省情况：

case x => 
     val oldStrategy = (assemblyMergeStrategy in assembly).value 
     oldStrategy(x) 

另外，mergeStrategy被弃用，assemblyMergeStrategy应改为使用。

基本上

{ 
    case PathList("org", "springframework", xs@_*) => MergeStrategy.last 
} 

是一个局部函数字符串=> MergeStrategy只有一个用于与包前缀的类型的输入端，即定义的“有机\ springframework的”。但是，它应用于项目中的所有类文件，并且第一个与上述前缀（org \ apache \ commons \ io \ IOCase.class）不匹配导致MatchError。