如何在 SpringBoot application.yml 中配置 log4j 滚动文件附加程序

Question

I'm working on spring boot application. For logging I'm trying to use log4j. Can anyone help me to configure the RollingFileAppender in application.yml

I have following log4j dependencies:

<dependency>
    <groupId>org.apache.logging.log4j</groupId>
    <artifactId>log4j-core</artifactId>
    <version>2.7</version>
</dependency>

<dependency>
    <groupId>log4j</groupId>
    <artifactId>apache-log4j-extras</artifactId>
    <version>1.2.17</version>
</dependency>

Currently I'm try with following code:

log4j.appender.File: org.apache.log4j.rolling.RollingFileAppender
log4j.appender.File.file: ${basedir}/logs
log4j.appender.File.rollingPolicy: org.apache.log4j.rolling.TimeBasedRollingPolicy
log4j.appender.File.rollingPolicy.FileNamePattern: %d{ddMMyyyy}.log

I want to store the log file in the project itself and the file pattern should DD-MM-YYYY.log. And also in my function, I'm printing my log as follows:

private static Logger logger = LoggerFactory.getLogger(LoggingFile.class);
logger.info("Printing logs in file");

I can able to see this in console, but the file is not creating. Please help!

Thanks in advance!

Answer 1

I think LogBack is a better choice, the following is the relevant configuration

<configuration scan="true" scanPeriod="5 seconds">
<contextName>heron</contextName>
<property name="appName" value="adminLte"/>
<property name="logPath" value="/tmp/logs"/>

<!--控制台日志-->
<appender name="STDOUT" class="ch.qos.logback.core.ConsoleAppender">
    <encoder>
        <pattern>%d{yyyy-MM-dd HH:mm:ss} [%thread] %-5level %logger{16} - %msg%n</pattern>
    </encoder>
</appender>

<!--基于时间和文件尺寸的轮转-->
<appender name="rollingFileAppender" class="ch.qos.logback.core.rolling.RollingFileAppender">
    <file>${logPath}/${appName}/${appName}.log</file>
    <rollingPolicy class="ch.qos.logback.core.rolling.SizeAndTimeBasedRollingPolicy">
        <fileNamePattern>${logPath}/${appName}/%d{yyyy-MM-dd}/${appName}-%i.log</fileNamePattern>
        <maxFileSize>10MB</maxFileSize>
        <maxHistory>15</maxHistory>
        <totalSizeCap>5GB</totalSizeCap>
    </rollingPolicy>
    <encoder>
        <pattern>%d{yyyy-MM-dd HH:mm:ss} [%thread] %-5level %logger{16} - %msg%n</pattern>
    </encoder>
</appender>

<logger name="website.lhc" level="debug" additivity="false">
    <appender-ref ref="STDOUT"/>
    <appender-ref ref="rollingFileAppender"/>
</logger>


<logger name="org.springframework.security" level="debug" additivity="false">
    <appender-ref ref="STDOUT"/>
    <appender-ref ref="rollingFileAppender"/>
</logger>


<root level="info">
    <appender-ref ref="STDOUT"/>
    <appender-ref ref="rollingFileAppender"/>
</root>