Java Web Framework Supporting Invalid URL characters

I know, I know I know.

We're currently very happily using a couple of java-ws frameworks (Grizzly, Dropwizard).

Part of what we do requires us to respond to web requests with a temporary redirect to a third party supplied URL. Sometimes that URL contains invalid characters.

The frameworks we use, whether we try Response.redirect(...) or Response.status(30x).header("Location", ...), generate server errors if the URL contains invalid URL characters.

Obviously this is perfectly correct behaviour but we still need to redirect to invalid URLs.

Are there any Java web frameworks out there which allow redirects to these URLS?