在多模块Java EE项目中，slf4j api和实现应该放在哪里？

Question

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.

SLF4J: Class path contains multiple SLF4J bindings.
SLF4J: Found binding in [jar:file:/home/richter/zpool-tmp/jee-slf4j-logging/jee-slf4j-logging-ear/target/gfdeploy/jee-slf4j-logging-ear/jee-slf4j-logging-web-1.0-SNAPSHOT_war/WEB-INF/lib/logback-classic-1.2.3.jar!/org/slf4j/impl/StaticLoggerBinder.class]
SLF4J: Found binding in [jar:file:/home/richter/zpool-tmp/jee-slf4j-logging/jee-slf4j-logging-ear/target/gfdeploy/jee-slf4j-logging-ear/lib/logback-classic-1.2.3.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 [ch.qos.logback.classic.util.ContextSelectorStaticBinder]

Caused by: java.lang.LinkageError: loader constraint violation: when resolving method "org.slf4j.impl.StaticLoggerBinder.getLoggerFactory()Lorg/slf4j/ILoggerFactory;" the class loader (instance of org/glassfish/web/loader/WebappClassLoader) of the current class, org/slf4j/LoggerFactory, and the class loader (instance of org/glassfish/javaee/full/deployment/EarLibClassLoader) for the method's defining class, org/slf4j/impl/StaticLoggerBinder, have different Class objects for the type org/slf4j/ILoggerFactory used in the signature
    at org.slf4j.LoggerFactory.getILoggerFactory(LoggerFactory.java:418)
    at org.slf4j.LoggerFactory.getLogger(LoggerFactory.java:357)
    at org.slf4j.LoggerFactory.getLogger(LoggerFactory.java:383)

我在https://gitlab.com/krichter/jee-slf4j-logging提供了一个MCVE。

GlassFish4中，没有日志框架依赖项在POM.XML不包括Java EE方面。

Answer 1

我最后做了以下几点：

>

直接在EAR文件夹下创建一个新文件夹。例如，创建一个名为“conf”的新文件夹-->ear/conf

将logback.xml文件放在这个新文件夹中：ear/conf/logback.xml

Class-Path: conf

WEB, EJB, API modules
<dependency>
  <groupId>org.slf4j</groupId>
  <artifactId>slf4j-api</artifactId>
  <version>${slf4j.version}</version>
  <scope>provided</scope>
</dependency>

EAR modeule
<dependency>
  <groupId>org.slf4j</groupId>
  <artifactId>slf4j-api</artifactId>
  <version>${slf4j.version}</version>
</dependency>

<dependency>
  <groupId>ch.qos.logback</groupId>
  <artifactId>logback-classic</artifactId>
  <version>${logback.version}</version>
</dependency>

<dependency>
  <groupId>ch.qos.logback</groupId>
  <artifactId>logback-core</artifactId>
  <version>${logback.version}</version>
</dependency>

WEB, EJB, API modules
<configuration>
  <archive>
    <addMavenDescriptor>false</addMavenDescriptor>
    <manifest>
      <addClasspath>true</addClasspath>
    </manifest>
    <manifestEntries>
      <Class-Path>logback</Class-Path>
    </manifestEntries>
  </archive>
...