类路径包含多个使用Gradle的SLF4J绑定 [英] Class path contains multiple SLF4J bindings with Gradle

问题描述

  SLF4J：类路径包含多个SLF4J绑定。 
 SLF4J：在[jar：file：/Users/qliu/.gradle/caches/modules-2/files-2.1/ch.qos.logback/logback-classic/1.0.6/ba738848da3e6fffa0107771c75546eb6d407f3c/logback- classic-1.0.6.jar！/org/slf4j/impl/StaticLoggerBinder.class] 
 SLF4J：在[jar：file：/Users/qliu/.gradle/caches/modules-2/files-2.1中找到绑定/uk.org.lidalia/slf4j-test/1.1.0/f4f523049e041dea673bd421d7b0d61fb5e49548/slf4j-test-1.1.0.jar!/org/slf4j/impl/StaticLoggerBinder.class] 
 SLF4J：请参阅http：// www .slf4j.org / codes.html＃multiple_bindings进行说明。 
 SLF4J：实际绑定类型为[ch.qos.logback.classic.selector.DefaultContextSelector] 
  

 依赖关系{
 //用于输出记录器消息
编译组：'log4j'，名称：'log4j'，版本：'1.2.17'
 
 //用于测试输出记录器消息
编译组：'uk.org.lidalia'，名称：'slf4j-test'，版本：'1.1.0'
} 
  

解决方案

您可以尝试通过 resolutionStrategy 来解决它：

  configurations.all {
 resolutionStrategy.eachDependency {DependencyResolveDetails details  - > 
 if（details.requested.name =='log4j'）{
 details.useTarget'log4j：log4j：1.2。+'
} 
} 
} 
  

请参阅文档： http://www.gradle.org/docs/current/dsl/org.gradle.api.artifacts.ResolutionStrategy.html a>

但是，如果您在SLF4J网站上阅读说明，则表示它只是一个警告：
http://www.slf4j.org/codes.html#multiple_bindings

SLF4J发出的警告就是这个警告。即使存在多个绑定，SLF4J也会选择一个日志框架/实现并绑定它。

I am getting the following error when I build my Gralde project:

SLF4J: Class path contains multiple SLF4J bindings.
SLF4J: Found binding in [jar:file:/Users/qliu/.gradle/caches/modules-2/files-2.1/ch.qos.logback/logback-classic/1.0.6/ba738848da3e6fffa0107771c75546eb6d407f3c/logback-classic-1.0.6.jar!/org/slf4j/impl/StaticLoggerBinder.class]
SLF4J: Found binding in [jar:file:/Users/qliu/.gradle/caches/modules-2/files-2.1/uk.org.lidalia/slf4j-test/1.1.0/f4f523049e041dea673bd421d7b0d61fb5e49548/slf4j-test-1.1.0.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.selector.DefaultContextSelector]

And my Gradle build file:

dependencies {
        // for output logger messages
        compile group: 'log4j', name: 'log4j', version: '1.2.17'

        // for testing outputed logger messages
        compile group: 'uk.org.lidalia', name: 'slf4j-test', version: '1.1.0'
}

解决方案

You could try to solve it via resolutionStrategy like:

configurations.all {
    resolutionStrategy.eachDependency { DependencyResolveDetails details ->
        if (details.requested.name == 'log4j') {
            details.useTarget 'log4j:log4j:1.2.+'
        }
    }
}

See the documentation: http://www.gradle.org/docs/current/dsl/org.gradle.api.artifacts.ResolutionStrategy.html

But if you read the note in the SLF4J site it says that it's just a warning: http://www.slf4j.org/codes.html#multiple_bindings

The warning emitted by SLF4J is just that, a warning. Even when multiple bindings are present, SLF4J will pick one logging framework/implementation and bind with it.

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