关于springboot响应式编程整合webFlux的问题

<dependency>
    <groupId>org.springframework.boot</groupId>
    <artifactId>spring-boot-starter-webflux</artifactId>
</dependency>

package com.example.oldguy.myWebFlux.handler;
 
import com.example.oldguy.myVo.Message;
import lombok.extern.slf4j.Slf4j;
import org.springframework.stereotype.Component;
import reactor.core.publisher.Mono;
@Component
@Slf4j
public class MessageHandler {
    public Mono<Message> echoHandler(Message message){
        log.info("【{}】业务层接收处理数据:{}",Thread.currentThread().getName());
        message.setTitle("【】"+Thread.currentThread().getName()+"】"+message.getTitle());
        message.setContent("【】"+Thread.currentThread().getName()+"】"+message.getContent());
        return Mono.create(item->item.success(message)); //实现数据响应
    }
}

package com.example.oldguy.myController;
 
import com.example.oldguy.myVo.Message;
import com.example.oldguy.myWebFlux.handler.MessageHandler;
import com.example.oldguy.mytask.MyThreadTask;
import io.swagger.annotations.api;
import io.swagger.annotations.ApiOperation;
import lombok.SneakyThrows;
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.beans.factory.annotation.Qualifier;
import org.springframework.scheduling.concurrent.ThreadPoolTaskExecutor;
import org.springframework.web.bind.WebDataBinder;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.InitBinder;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;
import org.springframework.web.context.request.RequestContextHolder;
import org.springframework.web.context.request.ServletRequestAttributes;
import org.springframework.web.context.request.async.DeferredResult;
import javax.servlet.Http.httpservletRequest;
import java.beans.PropertyEditorSupport;
import java.time.Instant;
import java.time.LocalDate;
import java.time.ZoneId;
import java.time.fORMat.DateTimeFormatter;
import java.util.Date;
import java.util.concurrent.TimeUnit;

@RestController
@RequestMapping("/message
    private static final DateTimeFormatter LOCAL_DATE_FORMAT = DateTimeFormatter.ofPattern("yyyy-MM-dd");
    @InitBinder
    public void initBinder(WebDataBinder binder){
        binder.reGISterCustomEditor(Date.class,new PropertyEditorSupport(){
            @Override
            public void setAsText(String text) throws IllegalArgumentException {
                LocalDate localDate = LocalDate.parse(text,LOCAL_DATE_FORMAT);
                Instant instant = localDate.atStartOfDay().atZone(ZoneId.systemDefault()).toInstant();
                super.setValue(Date.from(instant));
            }
        });
    }
    @GetMapping("runnable")
    @ApiOperation("异常处理Runnable")
    public Object message(String message) {
        log.info("外部线程:{}", Thread.currentThread().getName());
        HttpServletRequest request = ((ServletRequestAttributes) RequestContextHolder.getRequestAttributes()).getRequest();
        DeferredResult<String> result = new DeferredResult<>(6000L); //设置异步响应
        this.threadPoolTaskExecutor.execute(new Runnable() { //线程核心任务
            @SneakyThrows
            public void run() {
                log.info("内部线程:{}",Thread.currentThread().getName());
                TimeUnit.SECONDS.sleep(7);
                result.setResult("[echo]"+message); //执行最终的响应
        result.onCompletion(new Runnable() { //完成处理线程
                log.info("完成线程:{}",Thread.currentThread().getName()); //日志输出
        result.onTimeout(new Runnable() {
                log.info("超时线程：{}",Thread.currentThread().getName());
                result.setResult("【请求超时】"+request.getRequestURI()); //超时路径
        return  result;
    @GetMapping("task")
    @ApiOperation("task异步任务开启")
    public Object messageTask(String message){
        log.info("外部线程{}",Thread.currentThread().getName());
        this.task.startTaskHander();
        return "【echo】"+message;
    @GetMapping("webflux")
    @ApiOperation("整合webflux")
    public Object echo(Message message){
        log.info("接收用户信息，用户方发送的参数为message={}",message);
        return this.messageHandler.echoHandler(message);
}

//webFlux响应集合
    public Flux<Message> list(Message message){
        List<Message> messageList = new ArrayList<>();
        for(int i=0;i<10;i++){
            Message m = new Message();
            m.setTitle(i+"--"+message.getTitle());
            m.setContent(i+"--"+message.getContent());
            m.setPubdate(message.getPubdate());
            messageList.add(m);
        }
        return Flux.fromIterable(messageList);
    }
    public Flux<Map.Entry<String,Message>> map(Message message){
        Map<String,Message> map = new HashMap<>();
        for(int i=0;i<10;i++){
            Message m = new Message();
            m.setTitle(i+"--"+message.getTitle());
            m.setContent(i+"--"+message.getContent());
            m.setPubdate(message.getPubdate());
            map.put("pansd-"+i,m);
        }
//        Set<Map.Entry<String, Message>> entries = map.entrySet();
        return Flux.fromIterable(map.entrySet());
    }

@GetMapping("webfluxList")
@ApiOperation("整合webfluxList")
public Object echoList(Message message){
    log.info("接收用户信息，用户方发送的参数为message={}",message);
    return this.messageHandler.list(message);
}
 
@GetMapping("webfluxMap")
@ApiOperation("整合webfluxMap")
public Object echoMap(Message message){
    log.info("接收用户信息，用户方发送的参数为message={}",message);
    return this.messageHandler.map(message);
}