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https://issues.apache.org/jira/browse/LOG4J2-684?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14599683#comment-14599683
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Gary Gregory commented on LOG4J2-684:
-------------------------------------
Mauro,
The method
{{org.apache.logging.log4j.core.pattern.ThrowablePatternConverter.formatOption(Throwable,
StringBuilder)}} uses {{java.lang.Throwable.printStackTrace(PrintWriter)}} to
print a Throwable which prints suppressed exceptions. So I am surprised to read
that the suppressed exceptions do not show up.
Are you seeing suppressed exceptions in the file but not on the console?
Can you provide a unit test?
This example works for me:
{{org.apache.logging.log4j.core.appender.ConsoleAppenderNoAnsiStyleLayoutMain}}.
My output is:
{noformat}
ERROR StatusLogger No log4j2 configuration file found. Using default
configuration: logging only errors to the console.
2015-06-24 09:27:04,576 [main] FATAL: Fatal message.
2015-06-24 09:27:04,576 [main] ERROR: Error message.
2015-06-24 09:27:04,576 [main] WARN : Warning message.
2015-06-24 09:27:04,576 [main] INFO : Information message.
2015-06-24 09:27:04,576 [main] DEBUG: Debug message.
2015-06-24 09:27:04,576 [main] TRACE: Trace message.
2015-06-24 09:27:04,576 [main] ERROR: Error message.
java.io.IOException: test
at
org.apache.logging.log4j.core.appender.ConsoleAppenderNoAnsiStyleLayoutMain.logThrowableFromMethod(ConsoleAppenderNoAnsiStyleLayoutMain.java:43)
at
org.apache.logging.log4j.core.appender.ConsoleAppenderNoAnsiStyleLayoutMain.test(ConsoleAppenderNoAnsiStyleLayoutMain.java:61)
at
org.apache.logging.log4j.core.appender.ConsoleAppenderNoAnsiStyleLayoutMain.main(ConsoleAppenderNoAnsiStyleLayoutMain.java:48)
2015-06-24 09:27:04,576 [main] ERROR: Error message Hi
java.io.IOException: test
at
org.apache.logging.log4j.core.appender.ConsoleAppenderNoAnsiStyleLayoutMain.test(ConsoleAppenderNoAnsiStyleLayoutMain.java:63)
at
org.apache.logging.log4j.core.appender.ConsoleAppenderNoAnsiStyleLayoutMain.main(ConsoleAppenderNoAnsiStyleLayoutMain.java:48)
2015-06-24 09:27:04,576 [main] ERROR: Error message Hi, suppressed?
java.io.IOException: test suppressed
at
org.apache.logging.log4j.core.appender.ConsoleAppenderNoAnsiStyleLayoutMain.test(ConsoleAppenderNoAnsiStyleLayoutMain.java:65)
at
org.apache.logging.log4j.core.appender.ConsoleAppenderNoAnsiStyleLayoutMain.main(ConsoleAppenderNoAnsiStyleLayoutMain.java:48)
Suppressed: java.io.IOException: test suppressed 2
at
org.apache.logging.log4j.core.appender.ConsoleAppenderNoAnsiStyleLayoutMain.test(ConsoleAppenderNoAnsiStyleLayoutMain.java:66)
... 1 more
Caused by: java.io.IOException: test
at
org.apache.logging.log4j.core.appender.ConsoleAppenderNoAnsiStyleLayoutMain.test(ConsoleAppenderNoAnsiStyleLayoutMain.java:63)
... 1 more
2015-06-24 09:27:04,576 [main] ERROR: Error message Hi, suppressed?
java.io.IOException: test
at
org.apache.logging.log4j.core.appender.ConsoleAppenderNoAnsiStyleLayoutMain.test(ConsoleAppenderNoAnsiStyleLayoutMain.java:68)
at
org.apache.logging.log4j.core.appender.ConsoleAppenderNoAnsiStyleLayoutMain.main(ConsoleAppenderNoAnsiStyleLayoutMain.java:48)
Caused by: java.io.IOException: test suppressed
at
org.apache.logging.log4j.core.appender.ConsoleAppenderNoAnsiStyleLayoutMain.test(ConsoleAppenderNoAnsiStyleLayoutMain.java:65)
... 1 more
Suppressed: java.io.IOException: test suppressed 2
at
org.apache.logging.log4j.core.appender.ConsoleAppenderNoAnsiStyleLayoutMain.test(ConsoleAppenderNoAnsiStyleLayoutMain.java:66)
... 1 more
Caused by: java.io.IOException: test
at
org.apache.logging.log4j.core.appender.ConsoleAppenderNoAnsiStyleLayoutMain.test(ConsoleAppenderNoAnsiStyleLayoutMain.java:63)
... 1 more
{noformat}
You?
I am on
{noformat}
Apache Maven 3.3.3 (7994120775791599e205a5524ec3e0dfe41d4a06;
2015-04-22T04:57:37-07:00)
Maven home: C:\Java\apache-maven-3.3.3\bin\..
Java version: 1.7.0_79, vendor: Oracle Corporation
Java home: C:\Program Files\Java\jdk1.7.0_79\jre
Default locale: en_US, platform encoding: Cp1252
OS name: "windows 7", version: "6.1", arch: "amd64", family: "windows"
{noformat}
Thank you,
Gary
> ConsoleAppender does not print suppressed exceptions
> ----------------------------------------------------
>
> Key: LOG4J2-684
> URL: https://issues.apache.org/jira/browse/LOG4J2-684
> Project: Log4j 2
> Issue Type: Bug
> Components: Core
> Affects Versions: 2.0-rc1
> Environment:
> ------------------------------------------------------------
> Gradle 1.12
> ------------------------------------------------------------
> Build time: 2014-04-29 09:24:31 UTC
> Build number: none
> Revision: a831fa866d46cbee94e61a09af15f9dd95987421
> Groovy: 1.8.6
> Ant: Apache Ant(TM) version 1.9.3 compiled on December 23 2013
> Ivy: 2.2.0
> JVM: 1.8.0_05 (Oracle Corporation 25.5-b02)
> OS: Mac OS X 10.9.3 x86_64
> Reporter: Joern Huxhorn
>
> (Actual version was 2.0-rc2 but that wasn't available in the list.)
> Currently, any potentially available suppressed exceptions are ignored by
> ConsoleAppender.
> Instead, it should print those exceptions with the prefix "Suppressed: ". Be
> aware that suppressed exceptions are indented with a \t, recursively, in
> contrast to the way "Caused by: " is handled.
> See Throwable.printStackTrace of Java 7 or higher for the implementation.
> Feel free to use the code over at
> https://github.com/huxi/lilith/blob/master/lilith-data/logging/src/main/java/de/huxhorn/lilith/data/logging/ThrowableInfo.java
> if it helps.
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