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http://issues.apache.org/bugzilla/show_bug.cgi?id=39088





------- Additional Comments From [EMAIL PROTECTED]  2007-01-15 06:38 -------
Mark,

If you really want the root cause, you should do this:

public static Throwable getRootCause(ServletException e) {
    Throwable rootCause = e.getRootCause();
    if (rootCause instanceof ServletException
            && rootCause != e) {
        rootCause = getRootCause((ServletException) rootCause);
    } else {
        Throwable deepRootCause;
        do {
            deepRootCause = rootCause.getCause();
            if (rootCause == deepRootCause) {
                return rootCause;
            } else if (deepRootCause != null) {
                rootCause = deepRootCause;
            }
        } while (deepRootCause != null);
    }
    return rootCause;
}

This code is actually far more likely to find the true root cause and as an
added bonus, it uses API's whose implementation you should be able to trust.

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