一个简单的异步任务在springboot中已经为我们封装好,这里我们可以直接在函数上加@Async注解即可使用

注意,我们要接收返回值的话,函数返回类型需要为Future

例如,我们这里使用异步任务和建造者模式去创建一个对象

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package com.ruben;

import org.junit.jupiter.api.Test;
import org.springframework.boot.test.context.SpringBootTest;
import org.springframework.scheduling.annotation.Async;
import org.springframework.scheduling.annotation.AsyncResult;

import java.util.concurrent.ExecutionException;
import java.util.concurrent.Future;

/**
* @ClassName: AsyncDemo
* @Description: 我还没有写描述
* @Date: 2020/11/30 0030 21:17
* *
* @author: <achao1441470436@gmail.com>
* @version: 1.0
* @since: JDK 1.8
*/
@SpringBootTest
public class AsyncDemo {

@Test
public void test() throws ExecutionException, InterruptedException {
Future<StreamDemo.User> future = whoAmI("ruben", 19);
StreamDemo.User user = future.get();
System.out.println(user);
}

@Async
public Future<StreamDemo.User> whoAmI(String ruben, Integer age) {
return new AsyncResult<>(StreamDemo.User.builder().name(ruben).age(age).build());
}

}

运行结果

image-20201130212928922

要注意这里返回值是new AsyncResult