Hello,
Today I noticed that slf4j/logback sometimes logs the entire contents of
an array and sometimes just logs the first element. Here is a test app:
public class LogbackTest {
protected static final Logger log =
LoggerFactory.getLogger(LogbackTest.class);
public static final void main(String[] args) {
String[] array = {"one", "two", "three"};
log.info("Just the array <{}>", array);
log.info("a var then the array {} <{}>", 10, array);
log.info("the array <{}> then a var {}", array, 10);
}
}
The output I get is:
12:54:19.366 [main] INFO c.l.n.m.LogbackTest - Just the array <one>
12:54:19.372 [main] INFO c.l.n.m.LogbackTest - a var then the array 10
<[one, two, three]>
12:56:52.497 [main] INFO c.l.n.m.LogbackTest - the array <[one, two,
three]> then a var 10
When there is a single "{}" placeholder only the first element of the
array is output. When there are two placeholders all the elements are
output.
This is slf4j 1.6.1 and logback classic/core 0.9.27.
Is this the expected behavior?
thanks,
Colin
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