使用sbt-assembly的汇编合并策略问题 [英] assembly-merge-strategy issues using sbt-assembly

问题描述

我正在尝试使用 sbt-assembly 将scala项目转换为可部署的胖罐。当我在sbt中运行我的程序集任务时，我收到以下错误：

 合并org / apache / commons / logging / impl /simpleLog.class'与策略'重复数据删除'
：装配：重复数据删除：在以下内容中找到不同的文件内容：
 [error] /Users/home/.ivy2/cache/commons-logging/commons- logging / jars / commons-logging-1.1.1.jar：org / apache / commons / logging / impl / SimpleLog.class 
 [error] /Users/home/.ivy2/cache/org.slf4j/jcl- over-slf4j / jars / jcl-over-slf4j-1.6.4.jar：org / apache / commons / logging / impl / SimpleLog.class 
  

现在从sbt-assembly文档：

如果多个文件共享相同的相对路径（例如在多个依赖关系JAR中名为
application.conf的资源），默认策略为
，以验证所有候选人是否具有相同的内容，并且出错
。可以使用
作为以下内置策略之一或编写自定义策略，以每路径配置此行为：

• MergeStrategy.deduplicate 是上述默认值


• MergeStrategy.first 在classpath顺序中选择匹配文件中的第一个


• MergeStrategy.last 选择最后一个


• MergeStrategy.singleOrError bails out with a error message on conflict


• MergeStrategy.concat 简单地连接所有匹配的文件，并且包含结果


• MergeStrategy.filterDistinctLines 也连接起来，但是一起删除重复


• MergeStrategy.rename 重命名源自jar文件的文件


• MergeStrategy.discard 只需丢弃匹配的文件

我设置我的build.sbt如下：

  import sbt._ 
 import Keys._ 
 import sbtassembly.Plugin._ 
 import AssemblyKeys._ 
 name：=my-project
 version：=0.1
 scalaVersion：=2.9.2
 crossScalaVersions：= Seq（2.9.1，2.9.2）
 
 // assemblySettings 
 seq（assemblySettings：_ *）
 
解析器+在http://repo.typesafe.com/typesafe/releases/上的$ = Seq（
Typesafe Releases Repository），btype $ Snapshots Repository，http：//repo.typesafe。 com / typesafe / snapshots /，
Sonatype Repositoryathttp://oss.sonatype.org/content/repositories/releases/
）
 
 libraryDependencies + + = Seq（
org.scalatest%%scalatest％1.6.1％test，
org.clapper%%grizzled-slf4j％0.6.10 ，
org.scalaz％scalaz-core_2.9.2％7.0.0-M7，
net.databinder.dispatch%%dispatch-core％0.9。 5
）
 
 scalacOptions + =-deprecation
 mainClass在汇编y：= Some（com.my.main.class）
 test in assembly：= {} 
 mergeStrategy in assembly：= mergeStrategy.first 
  / pre> 
 
 
在build.sbt的最后一行，我有：
  mergeStrategy in assembly：= mergeStrategy.first 
  
现在，当我运行SBT，我得到以下错误：
 错误：值首先不是sbt.SettingKey的成员[String => sbtassembly.Plugin.MergeStrategy] 
 mergeStrategy在程序集中：= mergeStrategy.first 
  
有人可以指出在这里我可能做错了什么？
 
 
 
谢谢
解决方案
我认为它应该是 MergeStrategy.first ，其资本 M ，所以 mergeStrategy in assembly： = MergeStrategy.first 。
 
I am trying to convert a scala project into a deployable fat jar using sbt-assembly. When I run my assembly task in sbt I am getting the following error:
Merging 'org/apache/commons/logging/impl/SimpleLog.class' with strategy 'deduplicate'
    :assembly: deduplicate: different file contents found in the following:
    [error] /Users/home/.ivy2/cache/commons-logging/commons-logging/jars/commons-logging-1.1.1.jar:org/apache/commons/logging/impl/SimpleLog.class
    [error] /Users/home/.ivy2/cache/org.slf4j/jcl-over-slf4j/jars/jcl-over-slf4j-1.6.4.jar:org/apache/commons/logging/impl/SimpleLog.class
Now from the sbt-assembly documentation:

  
If multiple files share the same relative path (e.g. a resource named
      application.conf in multiple dependency JARs), the default strategy is
      to verify that all candidates have the same contents and error out
      otherwise. This behavior can be configured on a per-path basis using
      either one of the following built-in strategies or writing a custom one:
  
  

  
MergeStrategy.deduplicate is the default described above
  
MergeStrategy.first picks the first of the matching files in classpath order
  
MergeStrategy.last picks the last one
  
MergeStrategy.singleOrError bails out with an error message on conflict 
  
MergeStrategy.concat simply concatenates all matching files and includes the result 
  
MergeStrategy.filterDistinctLines also concatenates, but leaves out duplicates along the way
  
MergeStrategy.rename renames the files originating from jar files
  
MergeStrategy.discard simply discards matching files
  
Going by this I setup my build.sbt as follows:
import sbt._
import Keys._
import sbtassembly.Plugin._
import AssemblyKeys._
name := "my-project"
version := "0.1"
scalaVersion := "2.9.2"
crossScalaVersions := Seq("2.9.1","2.9.2")

//assemblySettings
seq(assemblySettings: _*)

resolvers ++= Seq(
    "Typesafe Releases Repository" at "http://repo.typesafe.com/typesafe/releases/",
    "Typesafe Snapshots Repository" at "http://repo.typesafe.com/typesafe/snapshots/",
    "Sonatype Repository" at "http://oss.sonatype.org/content/repositories/releases/"
)

libraryDependencies ++= Seq(
    "org.scalatest" %% "scalatest" % "1.6.1" % "test",
    "org.clapper" %% "grizzled-slf4j" % "0.6.10",
    "org.scalaz" % "scalaz-core_2.9.2" % "7.0.0-M7",
    "net.databinder.dispatch" %% "dispatch-core" % "0.9.5"
)

scalacOptions += "-deprecation"
mainClass in assembly := Some("com.my.main.class")
test in assembly := {}
mergeStrategy in assembly := mergeStrategy.first
In the last line of the build.sbt, I have:
mergeStrategy in assembly := mergeStrategy.first
Now, when I run SBT, I get the following error:
error: value first is not a member of sbt.SettingKey[String => sbtassembly.Plugin.MergeStrategy]
    mergeStrategy in assembly := mergeStrategy.first
Can somebody point out what I might be doing wrong here?

Thanks
解决方案
I think it should be MergeStrategy.first with a capital M, so mergeStrategy in assembly := MergeStrategy.first.

                        
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