java - Can't avoid hibernate logging SQL to console with Spring Boot and Logback

Question

My Spring Boot application keeps showing Hibernate queries in the console despite having configured Hibernate's specific logging with Logback as follows:

<appender name="HIBERNATE" class="ch.qos.logback.core.rolling.RollingFileAppender">
    <file>${LOGDIR}/hibernate.log</file>
    <encoder>
        <pattern>%d{yyyy-MM-dd HH:mm:ss} - %msg%n</pattern>
    </encoder>
    <rollingPolicy class="ch.qos.logback.core.rolling.TimeBasedRollingPolicy">
        <fileNamePattern>${LOGDIR}/hibernate.log.%d</fileNamePattern>
    </rollingPolicy>
</appender>

<logger name="org.hibernate" additivity="false">
    <appender-ref ref="HIBERNATE"/>
</logger>

<logger name="org.hibernate.SQL" additivity="false">
    <appender-ref ref="HIBERNATE"/>
</logger>

<logger name="org.hibernate.type.descriptor.sql" additivity="false">
    <appender-ref ref="HIBERNATE"/>
</logger>

It does send Hibernate's logs, including queries, to the file hibernate.log. But I would also like to avoid the queries in the console, which I think should be happening with this configuration.

What am I missing?

Answer 1

If you set the hibernate.show_sql to true, Hibernate will simply print the SQL statement to the console (not to be confused with logging under org.hibernate.SQL). SqlStatementLogger is responsible for logging the SQL statements and its logStatement looks like:

public void logStatement(String statement, Formatter formatter) {
    if ( format ) {
        if ( logToStdout || LOG.isDebugEnabled() ) {
            statement = formatter.format( statement );
        }
    }
    LOG.debug( statement );
    if ( logToStdout ) {
        System.out.println( "Hibernate: " + statement );
    }
}

So, if you do not want to see the queries on the console, just disable the hibernate.show_sql by setting it to false or just removing it altogether. In Spring Boot, just add this to your application.properties:

spring.jpa.show-sql=false