kotlin - 为什么更新Gradle break log4j导入？

Question

我正在尝试更新到Kotlin 1.4。在我的build.gradle文件中，我具有以下内容:

buildscript {
    allprojects {
        ext {
            kotlin_version = "1.3.70"
            ktor_version = "1.2.2"
            junit_version = "5.4.2"
            log4j_version = "2.11.2"
            jackson_version = "2.9.9"
            kafka_version = "2.3.0"
        }
    }
    repositories {
        maven {
            url 'https://smartward.jfrog.io/smartward/gradle-dev'
            credentials {
                username = "${artifactory_user}"
                password = "${artifactory_password}"
            }
        }
    }


    dependencies {
        classpath "org.jetbrains.kotlin:kotlin-gradle-plugin:$kotlin_version"
        classpath "org.jfrog.buildinfo:build-info-extractor-gradle:4.9.7"
    }
}

后来:

        implementation(
        "org.jetbrains.kotlin:kotlin-stdlib-jdk8:$kotlin_version",
        "org.jetbrains.kotlin:kotlin-reflect:$kotlin_version",
        "org.apache.logging.log4j:log4j-slf4j-impl:$log4j_version",
        "org.apache.logging.log4j:log4j-api:$log4j_version",
        // For JSON mapping
        "com.fasterxml.jackson.module:jackson-module-kotlin:$jackson_version",
        "com.fasterxml.jackson.datatype:jackson-datatype-jsr310:$jackson_version",
        "com.fasterxml.jackson.dataformat:jackson-dataformat-yaml:$jackson_version",
        "com.natpryce:konfig:1.6.10.0",
        "org.apache.kafka:kafka-clients:$kafka_version",
        
        "io.ktor:ktor-server-netty:$ktor_version",
        "io.ktor:ktor-locations:$ktor_version",
        "io.ktor:ktor-jackson:$ktor_version", 
        "io.ktor:ktor-client-core:$ktor_version",
        "io.ktor:ktor-client-apache:$ktor_version",
        "io.ktor:ktor-client-json:$ktor_version"
    )

我的第一步是将kotlin_version更改为“1.4.0”。运行构建脚本时，我被告知Gradle也需要更新。我这样做了，更改了gradle-wrapper.properties文件(下面的差异):

-distributionUrl=https\://services.gradle.org/distributions/gradle-4.10.3-all.zip
+distributionUrl=https\://services.gradle.org/distributions/gradle-5.3-all.zip

现在这意味着我的某些log4j导入不再起作用。即:

import org.apache.logging.log4j.core.Logger
import org.apache.logging.log4j.core.config.Configurator

我试图还原到Kotlin 1.3.70，而没有还原Gradle更新，并且问题仍然存在，所以我怀疑Gradle或我的构建脚本有问题，但是我不确定为什么或如何修复它。我还尝试过将Gradle 6.6与org.jfrog.buildinfo:build-info-extractor-gradle的4.17.1版本一起使用，但是问题仍然存在。

Answer 1

按照official documentation of Log4j，您需要同时链接到log4j-api和log4j-core才能正确使用该软件包。