DataStax Cassandra找不到Logback-Classic

Question

我目前正在尝试将巨大的键值存储Cassandra与其他一些库（如Akka）结合使用。设置群集并连接到密钥空间后：

val cluster = Cluster.builder().addContactPoint("127.0.0.1").build()
self ! AddKeySpaceSession(keySpace, cluster.connect(keySpace))

我得到了臭名昭着的“找不到StaticLoggerBinder”的警告信息：

SLF4J: Failed to load class "org.slf4j.impl.StaticLoggerBinder".
SLF4J: Defaulting to no-operation (NOP) logger implementation
SLF4J: See http://www.slf4j.org/codes.html#StaticLoggerBinder for further 
details.

当然，现在通常只需在课程路径上放置一个（并且只有一个）slf4j-nop.jar，slf4j-simple.jar，slf4j-log4j12.jar，slf4j-jdk14.jar或logback-classic.jar。这就是我所做的，这里显而易见：

libraryDependencies ++= {
  val akkaVersion = "2.5.8"
  val akkaDeps = Seq(
    "com.typesafe.akka" %% "akka-actor" % akkaVersion,
    "com.typesafe.akka" %% "akka-cluster" % akkaVersion,
    "com.typesafe.akka" %% "akka-testkit" % akkaVersion
  )

  val logbackVersion = "1.2.3"
  val loggingDeps = Seq(
    "ch.qos.logback" % "logback-classic" % logbackVersion % Test
  )

  val cassandraDriverVersion = "3.3.2"
  val cassandraDeps = Seq(
    "com.datastax.cassandra" % "cassandra-driver-core" % cassandraDriverVersion
  )

虽然问题仍然存在，但Cassandra实际上是唯一一个抱怨它的人。

Answer 1

这个问题可能与scope依赖的logback-classic有关。而不是把它放在Test范围内：

"ch.qos.logback" % "logback-classic" % logbackVersion % Test

尝试将其置于默认范围内：

"ch.qos.logback" % "logback-classic" % logbackVersion