sl4j版本在gradle中与Storm 1.0.1和elasticsearch 5.2冲突

Question

我们在gradle与Storm 1.0.1和elasticsearch 5.2中面临sl4j版本的冲突。

dependencies {
    compile 'org.slf4j:slf4j-api:1.7.21'
    compile 'org.apache.logging.log4j:log4j-to-slf4j:2.6.2'
    compile 'ch.qos.logback:logback-classic:1.1.10'
    provided ('org.apache.storm:storm-core:1.0.1') {
        exclude(group: 'org.slf4j', module: 'slf4j-api')
    }
    compile 'org.elasticsearch:elasticsearch:5.2.0'
    compile 'org.elasticsearch.client:x-pack-transport:5.2.0'
}

configurations.all {
    resolutionStrategy {
        eachDependency { DependencyResolveDetails dependencyResolveDetails ->
            final requestedDependency = dependencyResolveDetails.requested
            if (requestedDependency.group == 'org.slf4j' && requestedDependency.name == 'slf4j-api') {
                requestedDependency.setVersion "1.7.7"
            }
         }
    }
}

但是当拓扑被提交时，我们得到错误:SLF4J:Class path包含多个SLF4J绑定。SLF4J:在[jar:file://users/gauthamr05/documents/apps/storm/apache-storm-1.0.1/lib/log4j-slf4j-impl-2.1.jar！/org/slf4j/impl/staticloggerbinder.class]中找到绑定SLF4J:在[jar:file://users/gauthamr05/documents/workspace/xyz_app/build/libs/fullindexing.jar！/org/slf4j/impl/staticloggerbindings.class]中找到绑定slf4j:实际绑定类型为[org.apache.logging.log4j.spi.loggerRegistry.getorCreateInnerMap(loggerRegistry.java:140)在org.apache.logging.log4j.spi.loggerRegistry.haslogger(loggerRegistry.java:154)在org.apache.logging.slf4j.slf4jloggerContext.getLogger(slf4jloggerContext.java:38)在jloggerFactory.newLogger(log4JloggerFactory.java:37)在org.apache.logging.slf4j.log4Jlog4JloggerFactory.newLogger(log4JloggerFactory.java:29)在org.apache.logging.log4j.spi.AbstractLoggerAdapter.getLogger(AbstractLoggerAdapter.java:47)在org.apache.logging.slf4j.log4JloggerFactory.java:277)在

Answer 1

如异常所述，有两个JAR包含StaticloggerBinder.class。

• /users/gauthamr05/documents/apps/storm/apache-storm-1.0.1/lib/log4j-slf4j-impl-2.1.jar
• /users/gauthamr05/documents/workspace/xyz_app/build/libs/fullindexing.jar

问题:xyz_app/build/libs/fullindexing.jar是您自己的项目吗？

如果它是您自己的jar，我在这里进行了一点猜测，但我猜测org/slf4j/impl/statibloggerbinder.java被打包在您的类路径上的一个jar中。wierd默认javac，它将编译类路径上JAR中的任何.java文件。这可以通过以下方式关闭

compileJava.options.compilerArgs << '-implicit:none'

看这里和这里