如何用Gradle设置IntelliJ中的SLF4J

Question

plugins {
    id 'java'
    id 'org.openjfx.javafxplugin' version '0.0.8'
    id 'application'
}

version '1.0-SNAPSHOT'

sourceCompatibility = 1.8

repositories {
    mavenCentral()
    jcenter()
    google()
}

dependencies {
    compile group: 'com.googlecode.json-simple', name: 'json-simple', version: '1.+'
    testCompile group: 'junit', name: 'junit', version: '4.12'
    compile group: 'org.apache.poi', name: 'poi', version: '4.+'
    compile group: 'org.apache.poi', name: 'poi-ooxml', version: '4.+'
    compile group: 'org.slf4j', name: 'slf4j-api', version: '1.7.+'
    // compile group: 'ch.qos.logback', name: 'logback-classic', version: '1.+'
    implementation 'com.google.firebase:firebase-admin:6.11.0'
}
javafx {
    version = '12'
    modules = ['javafx.controls', 'javafx.fxml']
}

mainClassName = 'ui.Main'
apply plugin: 'org.openjfx.javafxplugin'

apply plugin: 'idea'

jar {
    manifest {
        attributes 'Main-Class': mainClassName
    }
    from {
        configurations.runtimeClasspath.collect { it.isDirectory() ? it : zipTree(it) }
    }
}

log4j.properties文件（在src/main/resources/中）：

# Define the root logger with appender file
log4j.rootLogger = DEBUG, FILE

# Define the file appender
log4j.appender.FILE=org.apache.log4j.FileAppender
log4j.appender.FILE.File=${log}/log.out

# Define the layout for file appender
log4j.appender.FILE.layout=org.apache.log4j.PatternLayout
log4j.appender.FILE.layout.conversionPattern=%m%n

Answer 1

在类路径上需要一个日志框架。SLF4J是一个日志外观，支持多种实现(logback、log4j等）。但是，如果您没有包含特定的后端，SLF4J默认为一个简单地忽略一切的NOP实现。：）

如果要使用log4j，则需要为其包含一个绑定，如下所示：

compile group: 'org.slf4j', name: 'slf4j-log4j12', version: '1.7.29'

欲了解更多信息，请参阅http://www.slf4j.org/manual.html#swapping