java - Spring Boot 2.1 以调试模式启动根记录器，直到横幅打印？

Question

这里有一些输出来举例说明我在说什么。调试消息不仅仅来自 Aspect4J 记录器，它们也来自其他几个类。我调试了应用程序，发现 Root 记录器设置为 DEBUG，然后在打印 Spring Banner 后设置为 INFO（我认为横幅与它没有任何关系）。

我的类路径上没有任何与日志记录相关的文件，除非它们是由我不知道的依赖项添加的。

我也试过设置。

# Logging
logging.level.root=INFO
logging.level.org.springframework.web=INFO
logging.level.org.hibernate=INFO

在我的 application.properties 文件中，但这没有帮助，Spring Boot 2.1 仍然在 DEBUG 级别输出所有内容，直到横幅打印。关于如何防止 Root 记录器在开始时出现 DEBUG 而不是 INFO 的任何想法都会很棒。

15:34:47.971 [main] DEBUG AspectJ Weaver - [AspectJ] not weaving 'org.springframework.boot.logging.AbstractLoggingSystem'
15:34:47.974 [main] DEBUG AspectJ Weaver - [AspectJ] not weaving 'ch.qos.logback.classic.joran.JoranConfigurator'
15:34:47.976 [main] DEBUG AspectJ Weaver - [AspectJ] not weaving 'ch.qos.logback.core.joran.JoranConfiguratorBase'
15:34:47.979 [main] DEBUG AspectJ Weaver - [AspectJ] not weaving 'ch.qos.logback.core.joran.GenericConfigurator'
15:34:47.980 [main] DEBUG AspectJ Weaver - [AspectJ] not weaving 'org.springframework.boot.logging.logback.SpringBootJoranConfigurator'
15:34:47.982 [main] DEBUG AspectJ Weaver - [AspectJ] not weaving 'ch.qos.logback.classic.spi.LoggerContextListener'
15:34:47.985 [main] DEBUG AspectJ Weaver - [AspectJ] not weaving 'ch.qos.logback.classic.turbo.TurboFilter'
15:34:47.987 [main] DEBUG AspectJ Weaver - [AspectJ] not weaving 'org.springframework.boot.logging.logback.LogbackLoggingSystem$1'
15:34:47.988 [main] DEBUG AspectJ Weaver - [AspectJ] not weaving 'org.springframework.boot.logging.LoggerConfigurationComparator'
15:34:47.989 [main] DEBUG AspectJ Weaver - [AspectJ] not weaving 'org.springframework.boot.logging.AbstractLoggingSystem$LogLevels'
15:34:48.009 [main] DEBUG AspectJ Weaver - [AspectJ] not weaving 'org.slf4j.bridge.SLF4JBridgeHandler'

  .   ____          _            __ _ _
 /\\ / ___'_ __ _ _(_)_ __  __ _ \ \ \ \
( ( )\___ | '_ | '_| | '_ \/ _` | \ \ \ \
 \\/  ___)| |_)| | | | | || (_| |  ) ) ) )
  '  |____| .__|_| |_|_| |_\__, | / / / /
 =========|_|==============|___/=/_/_/_/
 :: Spring Boot ::        (v2.0.1.RELEASE)

2018-11-21 15:34:50.094  INFO 1 --- [           main] c.s.technology.screening.SpringConfig    : Starting SpringConfig on 940e73166080 with PID 1 (/web.jar started by root in /)
2018-11-21 15:34:50.100  INFO 1 --- [           main] c.s.technology.screening.SpringConfig    : No active profile set, falling back to default profiles: default
2018-11-21 15:34:50.420  INFO 1 --- [           main] ConfigServletWebServerApplicationContext : Refreshing org.springframework.boot.web.servlet.context.AnnotationConfigServletWebServerApplicationContext@4e0ae11f: startup date [Wed Nov 21 15:34:50 EST 2018]; root of context hierarchy
2018-11-21 15:34:53.506  INFO 1 --- [           main] AspectJ Weaver                           : [AspectJ] Join point 'method-execution(org.springframework.data.domain.Page com.sasquatch.technology.screening.api.JobController.listJobs(org.springframework.data.domain.Pageable))' in Type 'com.sasquatch.technology.screening.api.JobController' (JobController.java:48) advised by around advice from 'org.springframework.security.access.intercept.aspectj.aspect.AnnotationSecurityAspect' (AnnotationSecurityAspect.aj:70)
2018-11-21 15:34:53.525  INFO 1 --- [           main] AspectJ Weaver                           : [AspectJ] Join point 'method-execution(com.sasquatch.technology.screening.persistence.entities.Job com.sasquatch.technology.screening.api.JobController.addJob(com.sasquatch.technology.screening.persistence.entities.Job))' in Type 'com.sasquatch.technology.screening.api.JobController' (JobController.java:54) advised by around advice from 'org.springframework.security.access.intercept.aspectj.aspect.AnnotationSecurityAspect' (AnnotationSecurityAspect.aj:70)
2018-11-21 15:34:53.620  INFO 1 --- [           main] AspectJ Weaver                           : [AspectJ] Join point 'method-execution(org.springframework.http.ResponseEntity com.sasquatch.technology.screening.api.TestHelperController.resetDatabase())' in Type 'com.sasquatch.technology.screening.api.TestHelperController' (TestHelperController.java:45) advised by around advice from 'org.springframework.transaction.aspectj.AnnotationTransactionAspect' (AbstractTransactionAspect.aj:66)

标签： javaspringspring-bootlogging

Answer 1

我能够将问题的根源追溯到 Spring 在初始化并运行org.springframework.boot.logging.LoggingSystem. 当 Logback 启动时，它在ch.qos.logback.classic.LoggerContext类中默认将 Root 记录器设置为 DEBUG this.root.setLevel(Level.DEBUG)。

我将以下代码添加到类内部的静态初始化块中，该块包含启动 Spring 应用程序的 main() 方法。获取根记录器（将其初始化为 DEBUG），然后转换为 Logback 记录器。请记住，这意味着此修复的实现与类路径上的真实日志记录实现相关联。如果我通过 log4j 或 apache commons 进行所有日志记录，那么我从中获取的记录器LoggerFactory.getLogger()将是不同的类型，因此需要不同的演员表。这种强制转换是必要的，因为 SLF4J 外观不公开以编程方式更改日志记录级别的方法。一旦我对根记录器有了参考，然后我就设置了级别。这个级别最终会被 Spring 覆盖，所以如果我想自动保持 Spring 设置和我的初始化块相同，我需要做更多的工作。

@SpringBootApplication
public class SpringConfig {

    static {
        ((ch.qos.logback.classic.Logger) org.slf4j.LoggerFactory.getLogger(Logger.ROOT_LOGGER_NAME)).setLevel(Level.INFO);
    }
}