在Spring-Application中,我尝试使用Log4j2代替默认的日志实现Logback。因此,在我的pom.xml中,我排除spring- boot-starter-logging并包含了spring-boot-starter-log4j2。这样我就可以使用Log4j2。
spring- boot-starter-logging
spring-boot-starter-log4j2
但是,如果我现在打开Spring Boot Acuator端点,那么localhost:8080/actuator/loggers我将不再看到所有Logger。使用Logback,有数百个Logger,但是使用Log4j2,我只看到大约10个。
localhost:8080/actuator/loggers
我的问题是:在使用Log4j2时,如何查看所有Logger的完整列表,而在Spring-Boot-Application中却看不到Logback?
编辑:这是我的pom.xml
<?xml version="1.0" encoding="UTF-8"?> <project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd"> <modelVersion>4.0.0</modelVersion> <groupId>com.example</groupId> <artifactId>log4jdemoclient1</artifactId> <version>0.0.1-SNAPSHOT</version> <packaging>jar</packaging> <name>log4jdemoclient1</name> <description>Demo project for Spring Boot</description> <parent> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-parent</artifactId> <version>2.0.6.RELEASE</version> <relativePath/> <!-- lookup parent from repository --> </parent> <properties> <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding> <project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding> <java.version>1.8</java.version> <!-- needed for spring boot admin (actuator) --> <spring-boot-admin.version>2.0.3</spring-boot-admin.version> </properties> <dependencies> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-web</artifactId> <exclusions> <exclusion> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-logging</artifactId> </exclusion> </exclusions> </dependency> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-actuator</artifactId> <exclusions> <exclusion> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-logging</artifactId> </exclusion> </exclusions> </dependency> <dependency> <groupId>de.codecentric</groupId> <artifactId>spring-boot-admin-starter-client</artifactId> <exclusions> <exclusion> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-logging</artifactId> </exclusion> </exclusions> </dependency> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-log4j2</artifactId> </dependency> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-test</artifactId> <scope>test</scope> <exclusions> <exclusion> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-logging</artifactId> </exclusion> </exclusions> </dependency> </dependencies> <dependencyManagement> <dependencies> <dependency> <groupId>de.codecentric</groupId> <artifactId>spring-boot-admin-dependencies</artifactId> <version>${spring-boot-admin.version}</version> <type>pom</type> <scope>import</scope> </dependency> </dependencies> </dependencyManagement> <build> <plugins> <plugin> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-maven-plugin</artifactId> </plugin> </plugins> </build> </project>
好了,经过一番研究,我发现问题出在log4j2-spring.xml,它被定义为配置Log4j2的日志记录。
一个简单的log4j2配置如下所示:
<?xml version="1.0" encoding="UTF-8"?> <Configuration> <Appenders> <Console name="Console" target="SYSTEM_OUT"> <PatternLayout pattern="%style{%d{ISO8601}}{black} %highlight{%-5level }[%style{%t}{bright,blue}] %style{%C{1.}}{bright,yellow}: %msg%n%throwable" /> </Console> <RollingFile name="RollingFile" fileName="./logs/spring-boot-logger-log4j2.log" filePattern="./logs/$${date:yyyy-MM}/spring-boot-logger-log4j2-%d{-dd-MMMM-yyyy}-%i.log.gz"> <PatternLayout> <pattern>%d %p %C{1.} [%t] %m%n</pattern> </PatternLayout> <Policies> <!-- rollover on startup, daily and when the file reaches 10 MegaBytes--> <OnStartupTriggeringPolicy /> <SizeBasedTriggeringPolicy size="10 MB" /> <TimeBasedTriggeringPolicy /> </Policies> </RollingFile> </Appenders> <Loggers> <!-- LOG everything at INFO level --> <Root level="info"> <AppenderRef ref="Console" /> <AppenderRef ref="RollingFile" /> </Root> <!-- LOG "com.example*" at TRACE level --> <Logger name="com.example" level="trace"></Logger> </Loggers> </Configuration>
如果使用这样的文件,则仅在<Loggers>-tag中定义的记录器将显示在执行器端点。因此,如果您想查看更多Logger,则必须将其添加到此文件中。
<Loggers>
(可悲的是,我发现我无法将所有可用的Logger都一一写出,包括每个Logger的名称)