Getting the stack trace from an exception in Java
If you need to get the StaceTrace from an exception it isn't quite as simple as you may think. It requires a couple of additional lines of code and an important replacement of certain String values in order to make it usable. The following are the import statements you need:
import java.io.StringWriter; import java.io.PrintWriter; import java.util.regex.Matcher;
and this is the method:
/**
* Returns the exceptions stack trace as a string. The string is sanatised by Matcher.quoteReplacement(stackTrace)
* and so it is safe to use in regular expressions etc. as characters like '$' are escaped.
*
* @param exception The exception whos stack trace you want as a string
* @return A string that is the additive frames of the stack trace.
*/
public String exceptionStackTraceToString(Exception exception){
StringWriter stringWriter = new StringWriter();
exception.printStackTrace(new PrintWriter(stringWriter));
String stackTrace = stringWriter.toString();
// As stackTrace may contain regular expression special characters we need to make them harmless first
return Matcher.quoteReplacement(stackTrace);
}
I have used this as a helper class in sending an email to an administrator and also in writing the exception StackTrace to the database.
26.02.2009 10:02 - Posted by doahh - Comments: 0 - Java
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