如何让grails 3.x响应OPTIONS请求？

import javax.servlet.*
import javax.servlet.http.HttpServletResponse

class CorsFilter implements Filter {

    void init(FilterConfig filterConfig) throws ServletException {
    }

    void doFilter(ServletRequest request, ServletResponse response, FilterChain chain) throws IOException, ServletException {
        HttpServletResponse httpServletResponse = (HttpServletResponse) response
        httpServletResponse.setHeader('Access-Control-Allow-Origin', '*')
        httpServletResponse.setHeader('Access-Control-Allow-Methods', 'GET, POST, OPTIONS')
        httpServletResponse.setHeader('Access-Control-Allow-Headers', 'Origin, X-Requested-With, Content-Type, Accept')
        httpServletResponse.setHeader('Access-Control-Max-Age', '3600')
        chain.doFilter(request, response)
    }

    void destroy() {
    }
}

import org.springframework.boot.web.servlet.FilterRegistrationBean

class BootStrap {

    def init = { servletContext ->
        FilterRegistrationBean corsFilter = new FilterRegistrationBean(new CorsFilter())
        corsFilter.addUrlPatterns('/*')
        corsFilter.order = 1
        corsFilter.name = 'CorsFilter'
        servletContext.addFilter('CorsFilter', corsFilter)
    }

    def destroy = {
    }
}