问检查@PathVariable数据绑定器结果是否为空，并抛出404

EN

 @PutMapping(value = "/{address}")
    //@PreAuthorize("isAuthenticated() and 
          //(#address.user.id == #user.id)") <-- move to service method
    public ResponseEntity<ResponseModel> update(
             @Valid @RequestBody AddressModel addressModel, @PathVariable Address address, 
                        @AuthenticationPrincipal User user) {

        if(address == null){
           //throw some exception that gets translated to 404
        }

        try {
            //check will be applied on call to service
            addressService.update(user, address, addressModel);
        } catch (Exception e) {
            return new ResponseEntity<>(new ResponseModel(e.getMessage(), 
                     ResponseModel.ResponseStatus.ERROR), HttpStatus.BAD_REQUEST);
        }
        return new ResponseEntity<>(new ResponseModel(messages.get("def.op.success"), 
                 ResponseModel.ResponseStatus.SUCCESS), HttpStatus.OK);
    }