Log4j2，文件中没有日志

Question

我试图在没有标准结构的 Maven 项目中配置 log4j2，但即使创建了文件，也没有附加任何内容。

我在 pom.xml 中有以下依赖项

    <dependency>
        <groupId>org.slf4j</groupId>
        <artifactId>slf4j-api</artifactId>
        <version>${slf4j-version}</version>
    </dependency>

    <dependency>
        <groupId>org.apache.logging.log4j</groupId>
        <artifactId>log4j-slf4j-impl</artifactId>
        <version>${log4j-version}</version>
    </dependency>

    <dependency>
        <groupId>org.apache.logging.log4j</groupId>
        <artifactId>log4j-api</artifactId>
        <version>${log4j-version}</version>
    </dependency>

    <dependency>
        <groupId>org.apache.logging.log4j</groupId>
        <artifactId>log4j-core</artifactId>
        <version>${log4j-version}</version>
    </dependency>

    <dependency>
        <groupId>com.fasterxml.jackson.core</groupId>
        <artifactId>jackson-core</artifactId>
        <version>${jackson-version}</version>
    </dependency>

    <dependency>
        <groupId>com.fasterxml.jackson.core</groupId>
        <artifactId>jackson-databind</artifactId>
        <version>${jackson-version}</version>
    </dependency>

我正在使用以下版本

    <properties>
        <slf4j-version>1.7.21</slf4j-version>
        <log4j-version>2.6.2</log4j-version>
        <jackson-version>2.8.2</jackson-version>
    </properties>

和以下 log4j2.properties

status = info
rootLogger.level = info

name = PropertiesConfig
property.fileName = ./log/log.txt

appender.rolling.type = RollingFile
appender.rolling.name = RollingFile
appender.rolling.fileName = ${fileName}
appender.rolling.filePattern = ./log/log_%d{dd-MM-yy}.txt
appender.rolling.append = true

appender.rolling.layout.type = JSONLayout
appender.rolling.layout.complete = true

appender.rolling.policies.type = Policies
appender.rolling.policies.time.type = TimeBasedTriggeringPolicy
appender.rolling.policies.time.interval = 1
appender.rolling.policies.time.modulate = true

appender.rolling.strategy.type = DefaultRolloverStrategy
appender.rolling.strategy.max = 5

另外，由于项目的结构，我正在像这样设置属性文件

    LoggerContext context = (LoggerContext) LogManager.getContext(false);
    File file = new File(CONFIGURATION_DIR + File.separator + "log4j2.properties");

    // this will force a reconfiguration
    context.setConfigLocation(file.toURI());

即使文件被创建，文件也没有附加任何内容，我也没有错误。 我是不是错过了什么，或者做错了什么？

Answer 1

看起来我缺少 log4j2.properties 文件的以下配置：

logger.rolling.name = name
logger.rolling.level = debug
logger.rolling.additivity = false
logger.rolling.appenderRef.rolling.ref = RollingFile

现在它起作用了。