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Logback does not allow logging to be disabled from the command line. However, if the configuration file allows it, you can set the level of loggers on the command line via a Java system property.
By default, Spring Boot picks up the native configuration from its default location for the system (such as classpath:logback. xml for Logback), but you can set the location of the config file by using the "logging. config" property.
By default, Spring Boot will only log to the console and will not write log files. If you want to write log files in addition to the console output you need to set a logging. file or logging. path property (for example in your application.
Add exclusion to both the spring-boot-starter and spring-boot-starter-web to resolve the conflict.
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter</artifactId>
<exclusions>
<exclusion>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-logging</artifactId>
</exclusion>
</exclusions>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
<exclusions>
<exclusion>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-logging</artifactId>
</exclusion>
</exclusions>
</dependency>
To add a better, more generic solution in Gradle (all instances will be excluded):
configurations {
all*.exclude module : 'spring-boot-starter-logging'
}
From https://docs.gradle.org/current/userguide/dependency_management.html
To add a solution in gradle.
dependencies {
compile ('org.springframework.boot:spring-boot-starter') {
exclude module : 'spring-boot-starter-logging'
}
compile ('org.springframework.boot:spring-boot-starter-web') {
exclude module : 'spring-boot-starter-logging'
}
}
I found that excluding the full spring-boot-starter-logging module is not necessary. All that is needed is to exclude the org.slf4j:slf4j-log4j12 module.
Adding this to a Gradle build file will resolve the issue:
configurations {
runtime.exclude group: "org.slf4j", module: "slf4j-log4j12"
compile.exclude group: "org.slf4j", module: "slf4j-log4j12"
}
See this other StackOverflow answer for more details.
Correct way to exclude default logging, and configure log4j for logging.
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter</artifactId>
<exclusions>
<exclusion>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-logging</artifactId>
</exclusion>
</exclusions>
</dependency>
Refer Spring Logging - How To.
In gradle, I needed to do this with several other dependencies:
configurations {
all*.exclude module : 'spring-boot-starter-logging'
all*.exclude module : 'logback-classic'
}
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