添加依赖



<dependency>
    <groupId>uk.org.lidalia</groupId>
    <artifactId>sysout-over-slf4j</artifactId>
    <version>1.0.2</version>
</dependency>



在调用System.out.xxx 之前调用 
SysOutOverSLF4J.sendSystemOutAndErrToSLF4J();

2019-06-12 12:58:53 [main] INFO  uk.org.lidalia.sysoutslf4j.context.SysOutOverSLF4J -Replaced standard System.out and System.err PrintStreams with SLF4JPrintStreams
2019-06-12 12:58:53 [main] INFO  uk.org.lidalia.sysoutslf4j.context.SysOutOverSLF4J -Redirected System.out and System.err to SLF4J for this context