use slf4j format pattern like dot net string format,it seems more elgeant
SLF4JManualSLF4JusermanualTheSimpleLoggingFacadeforJavaor(SLF4J)servesasasimplefacadeorabstractionforvariousloggingframeworks,suchasjava.util.logging,log4jandlogback.SLF4Jallowstheend-usertopluginthed