问Spring Rest模板-删除操作失败，请求错误

EN

     @DeleteMapping(value = "/customer/{customer-number}/customer-items/{country}", params = {"uline-item-number"} , produces = {"application/json"})

public ResponseEntity<Boolean> deleteCustomerItem( @PathVariable("customer-number") final String customerNumber, 
               @PathVariable("country") final String countryCode,
                @RequestParam("productCode") final String productCode) {
            try {
                return new ResponseEntity<>(appCustomerService.deleteCustomerItem(customerNumber, countryCode, productCode), HttpStatus.OK);
            } catch (Exception e) {
                logger.error(e.getMessage(), e);
                return new ResponseEntity<>(HttpStatus.BAD_REQUEST);
            }
        }

public Boolean deleteCustomerItem(String customerNumber, String countryCode, String productCode)
            throws Exception{
        Map<String, String> uriVariables = new HashMap<>();
        uriVariables.put("productCode", productCode);
        String productUrl = http://localhost:8080/product-service/customer/123456/customer-items/US";
        try {
            restTemplate.exchange(productUrl , HttpMethod.DELETE, HttpEntity.EMPTY, Void.class, uriVariables);
            return true;
        } catch (Exception e) {
            throw new Exception(e.getMessage());
        }
    }