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<td class="page-title-pattern-first-line " style="padding: 0px; border-collapse: collapse; font-family: Arial, sans-serif; font-size: 14px; padding-top: 10px"> <a href="http://jira.qos.ch/browse/LOGBACK" style="color: #3b73af; text-decoration: none">logback</a> / <a href="http://jira.qos.ch/browse/LOGBACK-1223" style="color: #3b73af; text-decoration: none"><img src="cid:jira-generated-image-static-bug-f66b2cbe-27ed-491d-8e36-4df4dc90340b" height="16" width="16" border="0" align="absmiddle" alt="Bug" style="vertical-align: text-bottom" /></a> <a href="http://jira.qos.ch/browse/LOGBACK-1223" style="color: #3b73af; text-decoration: none">LOGBACK-1223</a>
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Issue Type:
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Affects Versions:
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1.1.7
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Assignee:
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<td style="padding: 0px; border-collapse: collapse; font: normal 14px/20px Arial, sans-serif; padding: 2px 0 2px 5px; vertical-align: top"> <a class="user-hover" rel="logback-dev@qos.ch" id="email_logback-dev@qos.ch" href="http://jira.qos.ch/secure/ViewProfile.jspa?name=logback-dev%40qos.ch" style="color:#3b73af;; color: #3b73af; text-decoration: none">Logback dev list</a>
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Components:
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logback-classic, logback-core
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Created:
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18/Nov/16 9:33 PM
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Environment:
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<p style="margin-top:0;margin-bottom:10px;; margin: 10px 0 0 0">Windows<br /> Linux<br /> Java 1.7+</p>
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stacktrace exception
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Reporter:
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<td style="padding: 0px; border-collapse: collapse; font: normal 14px/20px Arial, sans-serif; padding: 2px 0 2px 5px; vertical-align: top"> <a class="user-hover" rel="sudharsannr" id="email_sudharsannr" href="http://jira.qos.ch/secure/ViewProfile.jspa?name=sudharsannr" style="color:#3b73af;; color: #3b73af; text-decoration: none">Sudharsan Rajagopal</a>
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<p style="margin-top:0;margin-bottom:10px;; margin: 10px 0 0 0">When nested exceptions are used and the exception does not have a message, logback library prints null. However, the expected detail should be calling toString() instead of printing null. Difference is evident between logback library and java logging library. </p>
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<pre class="code-java" style="margin: 10px 0 0 0; max-height: 30em; overflow: auto; white-space: pre-wrap; word-wrap: normal">
class TestException <span class="code-keyword" style="color: #000091">extends</span> Exception
{
<span class="code-keyword" style="color: #000091">private</span> <span class="code-object" style="color: #910091">String</span> exceptionCode;
<span class="code-keyword" style="color: #000091">private</span> <span class="code-object" style="color: #910091">String</span> exceptionMessage;
@Override
<span class="code-keyword" style="color: #000091">public</span> <span class="code-object" style="color: #910091">String</span> toString()
{
<span class="code-keyword" style="color: #000091">return</span> <span class="code-quote" style="color: #009100">"TestException [exceptionCode="</span> + exceptionCode + <span class="code-quote" style="color: #009100">", exceptionMessage="</span> + exceptionMessage + <span class="code-quote" style="color: #009100">"]"</span>;
}
}
<span class="code-keyword" style="color: #000091">try</span>
{
TestException testException = <span class="code-keyword" style="color: #000091">new</span> TestException();
testException.exceptionCode = <span class="code-quote" style="color: #009100">"Test exception code"</span>;
testException.exceptionMessage = <span class="code-quote" style="color: #009100">"Test exception message"</span>;
<span class="code-keyword" style="color: #000091">throw</span> <span class="code-keyword" style="color: #000091">new</span> IOException(<span class="code-quote" style="color: #009100">"Io message"</span>, testException);
}
<span class="code-keyword" style="color: #000091">catch</span> (Exception e)
{
logger.error(<span class="code-quote" style="color: #009100">"Error message "</span>, e);
java.util.logging.Logger.getAnonymousLogger().log(java.util.logging.Level.SEVERE, <span class="code-quote" style="color: #009100">"Error message"</span>, e);
}
</pre>
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<p style="margin-top:0;margin-bottom:10px;; margin: 10px 0 0 0">Prints the nested exceptions as:</p>
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<pre class="code-java" style="margin: 10px 0 0 0; max-height: 30em; overflow: auto; white-space: pre-wrap; word-wrap: normal">
<span class="code-comment" style="color: #808080">// SLF4J logging
</span>java.io.IOException: Io message
at test.Test.testMethod(Test.java:224)
at test.Test.main(Test.java:119)
Caused by: test.Test$1TestException: <span class="code-keyword" style="color: #000091">null</span>
at test.Test.testMethod(Test.java:221)
... 1 common frames omitted
Nov 17, 2016 11:52:04 AM test.Test testMethod
<span class="code-comment" style="color: #808080">// Java Util logging
</span>SEVERE: Error message
java.io.IOException: Io message
at test.Test.testMethod(Test.java:224)
at test.Test.main(Test.java:119)
Caused by: TestException [exceptionCode=Test exception code, exceptionMessage=Test exception message]
at test.Test.testMethod(Test.java:221)
... 1 more
</pre>
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