Thymeleaf Get Curent request parameter

I am developing a web app with Thymeleaf and Spring boot. I am using Fragments and a layout ; All I need is to print the request parameter in the header.

Exemple :

• when i open localhost:8080/foo/boo , My header print /foo/boo
• when i open localhost:8080/foo?size=5 , My header print /foo?size=5

Is there any variable in Thymeleaf to get that ?

Thank you