how to get the AuthenticationException detail message

[ibmsoft]

i want to get AuthenticationException ex
that throw in my custom realms,but can not get the message in my realms throws

[pmcneil]

Firstly Interceptors do not throw exceptions, only annotations do.

The ShiroGrailsExceptionResolver catches exceptions and redirects to a 401 or 403 as mentioned here https://github.com/nerdErg/grails-shiro/blob/master/docs/Guide.adoc#redirecting-unauthenticated-and-unauthorized

You can stop grails-shiro from handling exceptions by setting "handleExceptions" to false see https://github.com/nerdErg/grails-shiro/blob/master/docs/Guide.adoc#handleexceptions
(set security.shiro.handleExceptions: false )

OR you can override the ShiroGrailsExceptionResolver with your own.

Note if you just wish to log the message then perhaps do that from your Realm. It is rarely a good idea to pass on explicit information about what went wrong logging in to the user as that risks leaking information to an attacker.

[pmcneil]

Note possibly more usable version of docs at https://nerderg.com/docs/shiro/guide.html