一、pom.xml

      <dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-log4j2</artifactId>
        <version>3.1.2</version>
      </dependency>

二、application.yml

com.lingyang.system

# ===== log4j2配置 =====#
logging:
  level:
    com.lingyang.system: debug

三、效果