import org.springframework.web.context.request.RequestContextHolder;
import org.springframework.web.context.request.ServletRequestAttributes;

    @Override
    @PermissionLimit(limit = false)
    public R login( @RequestParam("userName") String userName, @RequestParam("password") String password, @RequestParam("ifRemember") Boolean ifRemember) {
    /* 实例化一个HttpServletResponse */
        ServletRequestAttributes servletRequestAttributes = (ServletRequestAttributes) RequestContextHolder.getRequestAttributes();
        HttpServletResponse response = servletRequestAttributes.getResponse();
        return xxlJobForeignService.serviceLogin(response, userName, password, ifRemember);
    }