我似乎无法正确打印以下模式[%level] %message%exception%n
。每次我调用它时,它只会打印%message
和%exception
(以及%n
)。如何在括号之间打印%level
这是我的Log4j2配置:
<?xml version="1.0" encoding="UTF-8"?>
<Configuration>
<Appenders>
<Console name="Console" target="SYSTEM_OUT">
<PatternLayout pattern="[%level] %message%exception{short}%n"/>
</Console>
</Appenders>
<Loggers>
<Root level="trace">
<AppenderRef ref="Console"/>
</Root>
</Loggers>
</Configuration>
这是一个显示问题的单元测试:
import org.apache.logging.log4j.LogManager;
import org.junit.Test;
public class Log4j2Test {
@Test public void testLogging() {
LogManager.getLogger().info("expecting [INFO]", new RuntimeException());
}
}
此测试的结果如下:
Running Log4j2Test
expecting [INFO] java.lang.RuntimeException
at Log4j2Test.testLogging(Log4j2Test.java:19)
Tests run: 1, Failures: 0, Errors: 0, Skipped: 0, Time elapsed: 0.453 sec
那么我做错了什么?
编辑:这是我使用的pom.xml
。只需将版本更改为2.1或2.2,就可以了。
<?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>be.fror</groupId>
<artifactId>tmp</artifactId>
<version>0.0.1-SNAPSHOT</version>
<packaging>jar</packaging>
<properties>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
<maven.compiler.source>1.8</maven.compiler.source>
<maven.compiler.target>1.8</maven.compiler.target>
</properties>
<dependencies>
<dependency>
<groupId>org.apache.logging.log4j</groupId>
<artifactId>log4j-api</artifactId>
<version>2.0.1</version>
</dependency>
<dependency>
<groupId>org.apache.logging.log4j</groupId>
<artifactId>log4j-core</artifactId>
<version>2.0.1</version>
</dependency>
<dependency>
<groupId>junit</groupId>
<artifactId>junit</artifactId>
<version>4.12</version>
<scope>test</scope>
</dependency>
</dependencies>
</project>