Webflux，如何截取请求并添加新标头

import org.springframework.stereotype.Component;
import org.springframework.web.server.ServerWebExchange;
import org.springframework.web.server.WebFilter;
import org.springframework.web.server.WebFilterChain;
import reactor.core.publisher.Mono;

@Component
public class CustomFilter implements WebFilter {

    @Override
    public Mono<Void> filter(ServerWebExchange exchange, WebFilterChain chain) {
        // 截取请求
        // 添加新标头
        exchange.getRequest().mutate().headers(httpHeaders -> httpHeaders.add("Custom-Header", "Custom-Value"));

        return chain.filter(exchange);
    }
}