如何在使用@Async的方法中实现回调(Springboot App)

import org.springframework.scheduling.annotation.Async;
import org.springframework.stereotype.Component;

import java.util.concurrent.CompletableFuture;

@Component
public class AsyncService {

    @Async
    public CompletableFuture<String> asyncMethod() {
        // 异步方法的逻辑
        // ...

        // 模拟异步方法的执行
        try {
            Thread.sleep(2000);
        } catch (InterruptedException e) {
            e.printStackTrace();
        }

        String result = "Async method result";
        return CompletableFuture.completedFuture(result);
    }

    public void callbackMethod(String result) {
        // 回调方法的逻辑
        // ...
    }
}

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RestController;

import java.util.concurrent.ExecutionException;

@RestController
public class ExampleController {

    @Autowired
    private AsyncService asyncService;

    @GetMapping("/callback")
    public String asyncMethodWithCallback() throws ExecutionException, InterruptedException {
        CompletableFuture<String> future = asyncService.asyncMethod();
        future.whenComplete((result, throwable) -> {
            if (throwable != null) {
                // 异步任务执行过程中发生异常
                throwable.printStackTrace();
            } else {
                // 异步任务执行完成后的回调
                asyncService.callbackMethod(result);
            }
        });

        // 继续处理其他的逻辑
        // ...

        return "Async method with callback";
    }
}