Logback doesn't log into file

Question

I'm using logback in my project and it doesn't log into a file.

My logback.xml looks like this

<property file="api.properties"/>

<appender name="FILE-AUDIT"
          class="ch.qos.logback.core.rolling.RollingFileAppender">
    <file>c:/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>c:/archived/debug.%d{yyyy-MM-dd}.%i.log</fileNamePattern>
        <timeBasedFileNamingAndTriggeringPolicy
                class="ch.qos.logback.core.rolling.SizeAndTimeBasedFNATP">
            <maxFileSize>10MB</maxFileSize>
        </timeBasedFileNamingAndTriggeringPolicy>
    </rollingPolicy>

</appender>

<appender name="STDOUT" class="ch.qos.logback.core.ConsoleAppender">
    <!-- encoders are assigned the type
         ch.qos.logback.classic.encoder.PatternLayoutEncoder by default -->
    <encoder>
        <pattern>%d{HH:mm:ss.SSS} [%thread] %-5level %logger{5} - %msg%n</pattern>
    </encoder>
</appender>

<logger name="JDBC" level="INFO" additivity="false">
    <appender-ref ref="STDOUT" />
    <appender-ref ref="FILE-AUDIT" />
</logger>
<logger name="RESTSecurity" level="INFO" additivity="false">
    <appender-ref ref="STDOUT" />
    <appender-ref ref="FILE-AUDIT" />
</logger>
<logger name="models" level="INFO" additivity="false">
    <appender-ref ref="STDOUT" />
    <appender-ref ref="FILE-AUDIT" />
</logger>

<!-- Strictly speaking, the level attribute is not necessary since -->
<!-- the level of the root level is set to DEBUG by default.       -->
<root level="DEBUG">
    <appender-ref ref="STDOUT" />
</root>

and it's placed in WEB-INF/classes.

I use these dependencies

  <dependency>
            <groupId>ch.qos.logback</groupId>
            <artifactId>logback-classic</artifactId>
            <version>${logback.version}</version>
        </dependency>

        <dependency>
            <groupId>ch.qos.logback</groupId>
            <artifactId>logback-core</artifactId>
            <version>${logback.version}</version>
        </dependency>

When I run my app on WebLogic server I get my log messages in the console but it doesn't create log files. Anyone know what could be wrong?

EDIT: I tried using both

private static final Logger logger = LoggerFactory.getLogger("JDBC");

and

private static final Logger logger = LoggerFactory.getLogger(Roles.class);

as that class is in JDBC package. Then I just do

 logger.info("Initializing roles");

EDIT2: Because log messages i get in console looks different from what is in logback.xml it looks like it does ignore my logback.xml at all.

Answer 1

The problem must come from Weblogic which does not pick up SLF4J/Logback from your classpath.

Add the following prefer-application-packages to your weblogic.xml :

<prefer-application-packages>
    <package-name>org.slf4j.*</package-name>
    <package-name>ch.qos.logback.*</package-name>
</prefer-application-packages>

Answer 2

You have to add all the appenders to the log level, if you want DEBUG to log to file, add the ref like this:

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