springboot过滤器执行两次的解决及跨域过滤器问题

HttpServletRequest request = (HttpServletRequest)servletRequest;
if (request.getRequestURL().toString().matches(".+.ico$")) {
     filterChain.doFilter(servletRequest, servletResponse);
 } else {
     // do something yourself
     filterChain.doFilter(servletRequest, servletResponse);
 }

@Bean
    public FilterRegistrationBean corsFilter() {
        FilterRegistrationBean filterRegistrationBean = new FilterRegistrationBean();
        CorsFilter corsFilter = new CorsFilter();
        filterRegistrationBean.addUrlPatterns("/*");
        filterRegistrationBean.setFilter(corsFilter);
        return filterRegistrationBean;
    }

public class CorsFilter implements Filter {

    @Override
    public void init(FilterConfig filterConfig) throws ServletException {

    }

    @Override
    public void doFilter(ServletRequest servletRequest, ServletResponse servletResponse, FilterChain filterChain) throws IOException, ServletException {
        HttpServletRequest request = (HttpServletRequest)servletRequest;
        HttpServletResponse response = (HttpServletResponse) servletResponse;
        if (request.getRequestURL().toString().matches(".+.ico$")) {
            filterChain.doFilter(servletRequest, servletResponse);
        } else {
            String origin = request.getHeader("Origin");
	       // 简单请求跨域，如果是跨域请求在响应头里面添加对应的Origin
	        if (!StringUtils.isEmpty(origin)) {
	            response.addHeader("Access-Control-Allow-Origin", origin);
	        }
	        // 非简单请求跨域
	        response.addHeader("Access-Control-Allow-Headers", "content-type");
	        // 允许跨域请求的方法
	        response.addHeader("Access-Control-Allow-Methods", "*");
	        // 预检命令缓存 1小时
	//        response.addHeader("Access-Control-Max-Age", "3600");
	        // 携带cookie的跨域
	        response.addHeader("Access-Control-Allow-Credentials", "true");
	        // 放行方法
	        filterChain.doFilter(servletRequest, servletResponse);
        }
    }
    @Override
    public void destroy() {
    }
}