Add empty line in slf4j logs

Question

Do any one knows how to add a empty line in slf4j logs without its formatting. To get empty log I have added empty string as log.

log.error("");

I need to get it with out formatting, Just empty line, Please help.

this might be related: http://stackoverflow.com/questions/18391005/how-to-make-logback-log-a-blank-line-without-including-the-pattern-string — hinneLinks, Aug 03 '15 at 10:38
After doing a bit of reading: you can't do this cleanly and you *shouldn't*. Do you have any valid use case? — meskobalazs, Aug 03 '15 at 10:50

score 3 · Accepted Answer · answered Jan 01 '16 at 04:42

In your logback.xml, declare a "minimal" appender that doesn't embellish the log message with timestamps or log levels or anything like so:

<appender name="minimal" class="ch.qos.logback.core.ConsoleAppender">
    <encoder>
        <pattern>%m%n</pattern>
    </encoder>
</appender>

Then declare a logger that uses that appender like so:

<logger name="blank.line.logger" level="ALL" additivity="false">
    <appender-ref ref="minimal"/>
</logger>

In your Java code where you'd like to produce empty log lines, you'll need a reference to that logger separate from whatever other logger you're using for regular log messages, something like

private static final Logger blankLineLogger = LoggerFactory.getLogger("blank.line.logger");

Then you can get your desired blank line in the log output with

blankLineLogger.info("");

score 0 · Answer 2 · answered Aug 23 '18 at 02:45

0

The accepted answser is a bit tricky, for me I just use a simple log.error("\n") , or append a \n in the previous log line.

answered Aug 23 '18 at 02:45

Leon

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Add empty line in slf4j logs

2 Answers2