springboot 백 엔 드 크로스 필드

@Component
@Order(Ordered.HIGHEST_PRECEDENCE)
public class CorsFilter implements Filter {

    @Override
    public void doFilter(ServletRequest req, ServletResponse res, FilterChain chain) throws IOException, ServletException {

        HttpServletRequest request = (HttpServletRequest) req;
        HttpServletResponse response = (HttpServletResponse) res;
        //        
        response.setHeader(HttpHeaders.ACCESS_CONTROL_ALLOW_ORIGIN, request.getHeader("Origin"));
        response.setHeader(HttpHeaders.ACCESS_CONTROL_ALLOW_CREDENTIALS, "true");
        //    -  OK
        response.setHeader(HttpHeaders.ACCESS_CONTROL_ALLOW_METHODS, StringUtil.join(RequestMethod.values()));
        //    -   
        response.setHeader(HttpHeaders.ACCESS_CONTROL_ALLOW_HEADERS, StringUtil.join(new String[]{
                HttpHeaders.ACCESS_CONTROL_ALLOW_HEADERS,
                HttpHeaders.CONTENT_TYPE,
                HttpHeaders.ACCEPT,
                HttpHeaders.ORIGIN}));

        /**
         *     ，  3600s         ，      
         */
        response.setHeader(HttpHeaders.ACCESS_CONTROL_MAX_AGE, "3600");

        /**
         * POST @RequestBody            {@link RequestMethod#OPTIONS}           
         *     （    {@link HttpServletRequest#getRequestURI()}       {@link RequestMethod.OPTIONS}     ）
         *       {@link HttpStatus#SC_NO_CONTENT}      
         */
        if (RequestMethod.OPTIONS.name().equals(request.getMethod())) {
            response.setStatus(HttpStatus.SC_NO_CONTENT);
        } else {
            chain.doFilter(req, res);
        }

    }

    @Override
    public void init(FilterConfig filterConfig) {
    }

    @Override
    public void destroy() {
    }

}