SLF4J: Class path contains multiple SLF4J bindings.
错误信息：
日志：
1 SLF4J: Class path contains multiple SLF4J bindings. 2 SLF4J: Found binding in [jar:file:/X:/code/apache-maven-3.5.4/repository/ch/qos/logback/logback-classic/1.2.3/logback-classic-1.2.3.jar!/org/slf4j/impl/StaticLoggerBinder.class] 3 SLF4J: Found binding in [jar:file:/X:/code/apache-maven-3.5.4/repository/org/slf4j/slf4j-log4j12/1.7.25/slf4j-log4j12-1.7.25.jar!/org/slf4j/impl/StaticLoggerBinder.class] 4 SLF4J: See http://www.slf4j.org/codes.html#multiple_bindings for an explanation. 5 SLF4J: Actual binding is of type [ch.qos.logback.classic.util.ContextSelectorStaticBinder]
原因及其解决办法：
springboot 默认日志是较新的logback 日志，不用再引入slf4j 日志了，只要把pom.xml文件中的slf4j日志依赖删除就好了；
