用于记录的Spring Boot应用程序属性

Question

I've seen many examples of configuring logging in Spring Boot, but what I look for is the simplest way to get the job done modifying this pattern in my application.properties:

logging.pattern.file= %d{yyyy-MM-dd HH:mm:ss} [%thread] %-5level %logger{36} - %msg%n"
logging.file=/Users/alessandroargentieri/Desktop/try/application.log

This works pretty fine but what I would like to get is set a MB limit for the single file and set that every day I want to have a different log file (with the date in the filename ).

Is possible to get this adding some lines in the application.properties without using XML or JSON files?

Answer 1

I think you need to override the default logging config with your own custom configuration. Spring boot provide logging support with minimum configuration and it's limited. It uses internally base.xml file which includes the below file-appender.xml:

<appender name="FILE"
        class="ch.qos.logback.core.rolling.RollingFileAppender">
        <encoder>
            <pattern>${FILE_LOG_PATTERN}</pattern>
        </encoder>
        <file>${LOG_FILE}</file>
        <rollingPolicy class="ch.qos.logback.core.rolling.FixedWindowRollingPolicy">
            <fileNamePattern>${LOG_FILE}.%i</fileNamePattern>
        </rollingPolicy>
        <triggeringPolicy
            class="ch.qos.logback.core.rolling.SizeBasedTriggeringPolicy">
            <MaxFileSize>10MB</MaxFileSize>
        </triggeringPolicy>
</appender>

As you can see only few properties can be injected.

You can go through the below link to setup your custom configuration:

https://dzone.com/articles/configuring-logback-with-spring-boot https://springframework.guru/using-logback-spring-boot/

Answer 2

No. The easiest way to do that is with an extra xml file.

I'm using logback.xml

<?xml version="1.0" encoding="UTF-8"?>
<property name="DEV_HOME" value="c:/logs" />

<appender name="FILE-AUDIT"
    class="ch.qos.logback.core.rolling.RollingFileAppender">
    <file>${DEV_HOME}/debug.log</file>
    <encoder class="ch.qos.logback.classic.encoder.PatternLayoutEncoder">
        <Pattern>
            %d{yyyy-MM-dd HH:mm:ss} - %msg%n
        </Pattern>
    </encoder>

    <rollingPolicy class="ch.qos.logback.core.rolling.TimeBasedRollingPolicy">
        <!-- rollover daily -->
        <fileNamePattern>
            ${DEV_HOME}/debug.%d{yyyy-MM-dd}.%i.log
        </fileNamePattern>
        <timeBasedFileNamingAndTriggeringPolicy class="ch.qos.logback.core.rolling.SizeAndTimeBasedFNATP">
            <maxFileSize>10MB</maxFileSize>
        </timeBasedFileNamingAndTriggeringPolicy>
    </rollingPolicy>

</appender>

<logger name="ar.com" level="debug" additivity="false">
    <appender-ref ref="FILE-AUDIT" />
</logger>

<root level="error">
    <appender-ref ref="FILE-AUDIT" />
</root>