DemoInterceptor.java

public class DemoInterceptor extends HandlerInterceptorAdapter {

    @Override
    public boolean preHandle(HttpServletRequest request, HttpServletResponse response, Object handler) throws Exception {
        String secure = request.getParameter("secure");
        if ("true".equals(secure)) {
            return true;
        } else {
            response.setStatus(HttpStatus.UNAUTHORIZED.value());
            return false;
        }
    }
}