在Java Web应用程序中执行异步操作的最简单方法

import java.util.concurrent.CompletableFuture;
import java.util.concurrent.ExecutionException;

public class AsyncExample {
    public static void main(String[] args) throws ExecutionException, InterruptedException {
        CompletableFuture<String> future = CompletableFuture.supplyAsync(() -> {
            // 这里是异步操作
            System.out.println("异步操作开始");
            try {
                Thread.sleep(3000);
            } catch (InterruptedException e) {
                e.printStackTrace();
            }
            System.out.println("异步操作结束");
            return "异步操作结果";
        });

        System.out.println("主线程在执行其他任务");

        // 等待异步操作完成并获取结果
        String result = future.get();
        System.out.println("异步操作的结果: " + result);
    }
}