如何在spring-webflux中处理reactor-netty终止请求？

import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RestController;
import reactor.core.publisher.Mono;

@RestController
public class MyController {

    @GetMapping("/api/myEndpoint")
    public Mono<String> handleRequest() {
        return Mono.fromCallable(() -> {
            // 处理请求的业务逻辑
            // ...
            return "Response";
        })
        .doOnCancel(() -> {
            // 请求被取消时执行的操作
            // ...
        });
    }
}

import org.springframework.http.HttpStatus;
import org.springframework.http.ResponseEntity;
import import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RestController;
import reactor.core.publisher.Mono;

@RestController
public class MyController {

    @GetMapping("/api/myEndpoint")
    public Mono<ResponseEntity<String>> handleRequest() {
        return Mono.fromCallable(() -> {
            // 处理请求的业务逻辑
            // ...
            return "Response";
        })
        .doOnCancel(() -> {
            // 请求被取消时执行的操作
            // ...
        })
        .switchIfEmpty(Mono.fromSupplier(() -> ResponseEntity.status(HttpStatus.NO_CONTENT).build()));
    }
}