之前(工作正常)
log4j.properties
log4j.rootLogger=DEBUG, file
log4j.appender.file=org.apache.log4j.RollingFileAppender
log4j.appender.file.File=logs/spring-boot-mqtt.log
log4j.appender.file.MaxFileSize=5MB
log4j.appender.file.MaxBackupIndex=10
log4j.appender.file.layout=org.apache.log4j.PatternLayout
log4j.appender.file.layout.ConversionPattern=[%d{yyyy-MM-dd HH:mm:ss:SSS}] [%-5p] [%t] [%c{1}] - %m%n
和 Maven 依赖,
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-log4j</artifactId>
</dependency>
之后(不起作用)
log4j2.properties
name = PropertiesConfig
property.filename = logs
appenders = file
appender.file.type = File
appender.file.name = ROLLING
appender.file.append = true
appender.file.fileName=${filename}/spring-boot-mqtt.log
appender.file.layout.type=PatternLayout
appender.file.layout.pattern=[%d{yyyy-MM-dd HH:mm:ss.SSS}] [%-5p] [%t][%c{2}] - %m%n
rootLogger.level = debug
rootLogger.appenderRefs = file
rootLogger.appenderRef.file.ref = ROLLING
以及我的 Maven 依赖项,
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-log4j2</artifactId>
</dependency>
<dependency>
<groupId>org.apache.logging.log4j</groupId>
<artifactId>log4j-api</artifactId>
<version>2.5</version>
</dependency>
<dependency>
<groupId>org.apache.logging.log4j</groupId>
<artifactId>log4j-core</artifactId>
<version>2.5</version>
</dependency>
<dependency>
<groupId>org.apache.logging.log4j</groupId>
<artifactId>log4j-slf4j-impl</artifactId>
<version>2.5</version>
</dependency>
当我在独立的 java 应用程序中对 log4j2
使用相同的配置时,它工作正常。但是在 spring-boot 应用程序中,生成了一个文件,但它仍然是空的。我在控制台中看到相同的默认登录。此外,属性中的 layout.pattern
似乎没有任何影响。
注意:使用 Slf4j
最佳答案
关于写入文件,您应该检查 documentation :
By default, Spring Boot will only log to the console and will not write log files. If you want to write log files in addition to the console output you need to set a logging.file or logging.path property (for example in your application.properties).
关于java - 从 log4j 迁移到 lof4j2 时的 SpringBoot 问题,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/36082584/