Rest API request path handle spanish text using Apache camel

Actually I create rest api using apache camel. Its a Get Call.

Request Path like this -> users/names/{username}?client={clientId}

we will try to given username is Spanish text like this -> users/names/plánia?client=100 

and try this also -> users/names/pl%C3%nia?client=100

Its throw error like bad request

{
   "timestamp": "2020-06-17T16:06:25.609+0000",
   "status": 400,
   "error": "Bad Request",
   "message": "Illegal Argument Specified in the Request Headers or Path",
   "path": "/users/names/plánia"
 }