Sbt “如何修复”；SLF4J:类路径包含多个SLF4J绑定；在Play 2.3.x启动时？

我升级了Play和其他库的版本，现在看到了以下内容：

SLF4J: Class path contains multiple SLF4J bindings.
SLF4J: Found binding in [jar:file:/home/paul/.ivy2/cache/org.slf4j/slf4j-nop/jars/slf4j-nop-1.7.7.jar!/org/slf4j/impl/StaticLoggerBinder.class]
SLF4J: Found binding in [jar:file:/home/paul/.ivy2/cache/org.slf4j/slf4j-jdk14/jars/slf4j-jdk14-1.7.7.jar!/org/slf4j/impl/StaticLoggerBinder.class]
SLF4J: Found binding in [jar:file:/home/paul/.ivy2/cache/org.slf4j/slf4j-simple/jars/slf4j-simple-1.7.7.jar!/org/slf4j/impl/StaticLoggerBinder.class]
SLF4J: See http://www.slf4j.org/codes.html#multiple_bindings for an explanation.
SLF4J: Actual binding is of type [org.slf4j.helpers.NOPLoggerFactory]

我正试图找出它们的来源，但当我运行

show managed classpath

时，只有slf4j JAR是

/home/paul/.ivy2/cache/org.slf4j/slf4j-api/jars/slf4j-api-1.7.6.jar
/home/paul/.ivy2/cache/org.slf4j/jul-to-slf4j/jars/jul-to-slf4j-1.7.6.ja
/home/paul/.ivy2/cache/org.slf4j/jcl-over-slf4j/jars/jcl-over-slf4j-1.7.6.jar

我从未见过

slf4j-nop-1.7.7.jar

或

slf4j-jdk14-1.7.7.jar

或

slf4j-simple-1.7.7.jar

---

这些在类路径上是如何的？

根据我可以提出的意见和可能的解决方案，我可以将它们包含在

build.sbt

中，供无修复版本的用户使用，例如Play 2.3.2：

libraryDependencies ++= Seq(
  "org.slf4j" % "slf4j-api"       % "1.7.7",
  "org.slf4j" % "jcl-over-slf4j"  % "1.7.7"
).map(_.force())

libraryDependencies ~= { _.map(_.exclude("org.slf4j", "slf4j-jdk14")) }

之前：

--- (Running the application from SBT, auto-reloading is enabled) ---

[info] play - Listening for HTTP on /0:0:0:0:0:0:0:0:9000

(Server started, use Ctrl+D to stop and go back to the console...)

SLF4J: Class path contains multiple SLF4J bindings.
SLF4J: Found binding in [jar:file:/Users/jacek/.ivy2/cache/org.slf4j/slf4j-nop/jars/slf4j-nop-1.7.7.jar!/org/slf4j/impl/StaticLoggerBinder.class]
SLF4J: Found binding in [jar:file:/Users/jacek/.ivy2/cache/org.slf4j/slf4j-jdk14/jars/slf4j-jdk14-1.7.7.jar!/org/slf4j/impl/StaticLoggerBinder.class]
SLF4J: Found binding in [jar:file:/Users/jacek/.ivy2/cache/org.slf4j/slf4j-simple/jars/slf4j-simple-1.7.7.jar!/org/slf4j/impl/StaticLoggerBinder.class]
SLF4J: See http://www.slf4j.org/codes.html#multiple_bindings for an explanation.
SLF4J: Actual binding is of type [org.slf4j.helpers.NOPLoggerFactory]
[info] play - Application started (Dev)

之后（随更改）：

这些是项目的依赖项：

$show libraryDependencies
[信息]列表（org.scala lang:scala library:2.11.2，com.typesafe.play:twirl api:1.0.2，com.typesafe.play:play-test:2.3.2:test，com.typesafe.play:play文档：2.3.2:docs，com.typesafe.play:play jdbc:2.3.2，com.typesafe.play:anrom:2.3.2，com.typesafe.play:play缓存：2.3.2，com.typesafe.play:play-ws:2.3.2，helplay:toers:2.3.2，org.webjars:webjars play:2.3.0，org.webjars:requirejs:2.1.14-1，org.webjars:下划线js:1.6.0-3，org.webjars:jquery:2.1.1，org.webjars:bootstrap:3.2.0，org.webjars:angularjs:1.3.0-beta.17，org.postgresql:postgresql:9.3-1102-jdbc41，org.slf4j:slf4j:1.7，org.slf4j:f47）

这是一个已知问题（已在问题跟踪程序中存档）。@applicius您能给我们发送一个链接吗？

--- (Running the application from SBT, auto-reloading is enabled) ---

[info] play - Listening for HTTP on /0:0:0:0:0:0:0:0:9000

(Server started, use Ctrl+D to stop and go back to the console...)

[info] play - Application started (Dev)