啥？双十一线上出故障了？日志动态级别赶紧修改排查一下

▶ Spring Boot 依赖与配置

Maven 依赖

 <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-actuator</artifactId>
        </dependency>

Actuator 配置

management.endpoints.web.exposure.include=loggers

▶ 初始化配置日志级别

可选的日志级别

OFF
ERROR
WARN
INFO
DEBUG
TRACE

设置全局日志级别

logging.level.root=INFO

设置特定 Package/Class 日志级别

logging.level.<Package/Class>=INFO

示例：logging.level.com.anoyi=INFO

▶ 运行时配置日志级别

查看所有 package / class 日志级别的配置

curl http://127.0.0.1:8080/actuator/loggers

查看单个 package / class 日志级别的配置

# 用法
curl http://127.0.0.1:8080/actuator/loggers/<Package/Class>

# 示例
curl http://127.0.0.1:8080/actuator/loggers/com.anoyi

动态修改日志级别

# 用法
curl -X POST \
  http://localhost:8080/actuator/loggers/<Package/Class> \
  -d '{"configuredLevel":"<LEVEL>"}'

# 示例
curl -X POST \
  http://localhost:8080/actuator/loggers/com.anoyi \
  -d '{"configuredLevel":"DEBUG"}'