spring boot logback-spring.xml maxFileSize not working with SizeAndTimeBasedRollingPolicy

user_1385063 0
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I want to configure logging in spring boot application. I have configure logback-spring.xml. The sample of logback-spring.xml is located on here and sample of application-dev.properties file is located here When I just try to run spring boot application get below error:

java.lang.IllegalStateException: Logback configuration error detected: 
ERROR in ch.qos.logback.core.joran.util.PropertySetter@5b7a5baa - Failed to invoke valueOf{} method in class [ch.qos.logback.core.util.FileSize] with value [{LOG_FILE_MAX_SIZE}]
ERROR in c.q.l.core.rolling.SizeAndTimeBasedRollingPolicy@2003496028 - maxFileSize property is mandatory.

If I replace <maxFileSize>{LOG_FILE_MAX_SIZE}</maxFileSize> with <maxFileSize>50MB</maxFileSize> application is running successfuuly

spring-boot logback logging spring java
2 Answers

Try using the variable in your log filename. If it ("50MB") shows up in the filename, you know for sure that it is set.

I ran into this problem with the variables set in my pom.xml for profile "dev". I was using a separate profile "test" for my tests so the "dev" variables were not being set.

user_8543420

this will solve the issue. In logback.xml use $ with {attribute} ex:- ${max.log.size}

make sure u have initialized max.log.size with values in application.properties.
It works!!
user_101896370
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