I have spring-framework-bom included in my pom.xml for long time. Today, when I included log4j-bom into my pom.xml, the whole system broke. On my analysis, I have found that log4j parent pom has included all spring dependencies with 3.2.8 version.
Hence the pom has imported two version of spring dependendencies 4.0.4 and 3.2.8 and all unwanted dependency conflicts.
following is debug output on maven build.
[DEBUG] org.springframework:spring-core:jar:3.2.8.RELEASE:test (version managed from 4.0.4.RELEASE by org.apache.logging.log4j:log4j:2.0)