code: public String param(final String name) {
          try {
              return request.getParameter(name);
          } catch (final Exception e) {
              LOGGER.log(Level.ERROR, "Can't parse request parameter [uri=" + request.getRequestURI() + ", method=" + request.getMethod() + ", parameterName=" + name + "]: " + e.getMessage());
  
              return null;
          }
      }
docs: Gets a parameter specified by the given name from request body form or query string.
  
  @param name the given name
  @return parameter, returns {@code null} if not found