Unable to start spring boot server

Question

I am new to spring boot and when I try to start my server , I get the following Exception. I understand that this has something to do with dependency conflict, but still una

Answer 1

Finally resolved this issue by excluding the Logback dependency and explicitly adding the log4j dependency

Answer 2

Excluding logback-classic from spring-boot-starter-web and spring-boot-starter-actuator worked for me

compile("org.springframework.boot:spring-boot-starter-web:1.1.10.RELEASE") {
    exclude module: "spring-boot-starter-tomcat"
    exclude module: "spring-boot-starter-logging"
    exclude module: "logback-classic"
}
compile("org.springframework.boot:spring-boot-starter-actuator:1.1.10.RELEASE") {
    exclude module: "logback-classic"
}

Answer 3

the following configuration in my gradle.build file worked for me:

configurations {
    all*.exclude group: "org.springframework.boot", module: "spring-boot-starter-logging"
    all*.exclude group: "ch.qos.logback"
    all*.exclude group: "org.slf4j", module: "log4j-over-slf4j" // allow using log4j 2.x
    all*.exclude group: "org.slf4j", module: "slf4j-simple"     // log4j is the configured backend
}

Answer 4

Gradle solution is adding below lines in build.gradle :

configurations {
    all*.exclude module : 'spring-boot-starter-logging'
}

Answer 5

Repeat answer but you can use Eclipse to exclude the spring-boot-starter-logging dependency

1. Select dependency hierarchy
2. Search for logging top right
3. Select spring-boot-starter-logging
4. Right click exclude maven artifact

e.g enter image description here

Answer 6

Spring Boot supports Log4j 2 for logging configuration if it is on the classpath. If you use the starters for assembling dependencies, you have to exclude Logback and then include log4j 2 instead.