Encoded slash (/) with Spring RequestMapping path param gives HTTP 400

Question

This is not a duplicate referenced question, because it is Spring specific. Whoever added that (3 years after the fact!) didn\'t bother to read the question or comment

Answer 1

Here is a fix for Spring 3.2.4 (should work for other versions as well). One must overwrite the default UrlPathHelper

    public class UrlPathHelperFixed extends UrlPathHelper {

        public UrlPathHelperFixed() {
            super.setUrlDecode(false);
        }

        @Override
        public void setUrlDecode(boolean urlDecode) {
            if (urlDecode) {
                throw new IllegalArgumentException("Handler [" + UrlPathHelperFixed.class.getName() + "] does not support URL decoding.");
            }
        }

        @Override
        public String getServletPath(HttpServletRequest request) {
            return getOriginatingServletPath(request);
        }

        @Override
        public String getOriginatingServletPath(HttpServletRequest request) {
            return request.getRequestURI().substring(request.getContextPath().length());
        }
    }

And inject it to the Mapping Handler:

After a day of hard works it works now for me :-)

It was suggested to Spring team as https://jira.springsource.org/browse/SPR-11101