Should controller take "id" as PathVariable or should it take "page-id"

We are trying to create SEO friendly roads. In this context, we decided to make changes to the url. E.g: /141(id) --> /example-page-141

I argue that we should get the "id" value as PathVariable on the back-end side. Another solution is to take "/example-page-141" as @PathVariable and find 141 in it. Which is the right solution?

1. Solution

     @GetMapping("/get/{id}")
   public ResponseEntity<?> getProductDetail(@PathVariable Long id) 
   
       Product product = productService.getProductDetail(id);
   
       return new ResponseEntity<>(product, HttpStatus.OK);
   }
   

2. Solution

    @GetMapping("/get/{id}")
    public ResponseEntity<?> getProductDetail(@PathVariable String id) {
   
   String[] bits = id.split("-");
   
   Long idLong = Long.valueOf(bits[bits.length-1]);
   
   Product product = productService.getProductDetail(idLong);
   
   return new ResponseEntity<>(product, HttpStatus.OK);
    }
   

Which should do the split operation on the front-end or the back-end?