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POHow to log as much information as possible for a Java Exception?
 

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  1. POHow to log as much information as possible for a Java Exception?
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    <p>There's a common problem I've come across a few times when logging Exceptions. There seem to be various different types to deal with. E.g. some wrap other Exceptions, some don't have a message at all - just a type.</p> <p>Most code I've seen logs Exceptions using either <code>getMessage()</code> or <code>toString(</code>) but these don't always capture all the information needed to pinpoint the problem - other methods such as <code>getCause()</code> and <code>getStackTrace()</code> sometimes provide additional info.</p> <p>As an example, the Exception I'm looking at right now in my Eclipse Inspect window is an <code>InvocationTargetException</code>. The Exception itself has no cause, no message, no stacktrace ... but the target from getCause() is <code>InvalidUseOfMatchersException</code> with these details populated.</p> <p>So my question is: Given an Exception of <em>any</em> type as an input please provide a single method that will output a nicely formatted String containing <em>all</em> relevant information about the Exception (e.g. possibly recursively calling <code>getCause()</code> amongst other things?) Before posting this question I was nearly going to have a stab at this myself but don't really want to reinvent the wheel - surely such a thing must have been done many times before...?</p> <p><em>Please don't point me at any particular logging or utility framework to do this. I'm looking for a fragment of code rather than a library since I don't have the right to add external dependencies on the project I'm working on and it's actually being logged to part of a webpage rather than a file. If it's a case of copying the code fragment out of such a framework (and attributing it) that's fine :-)</em></p>
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    1. USSteve Chambers
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