CompletableFuture使用IOC容器中自定义线程池

开启Spring对异步方法的支持

@EnableAsync
@SpringBootApplication
public class ThreadDemoApplication {

    public static void main(String[] args) {
        SpringApplication.run(ThreadDemoApplication.class, args);
    }

}

创建自定义线程池，并交给ioc容器管理

@Configuration
public class ThreadPoolConfig {


    @Bean
    public Executor asyncServiceExecutor(){
        ThreadPoolTaskExecutor executor = new ThreadPoolTaskExecutor();
        executor.setCorePoolSize(8);
        executor.setMaxPoolSize(10);
        executor.setQueueCapacity(100);
        executor.setKeepAliveSeconds(60);
        executor.setRejectedExecutionHandler(new ThreadPoolExecutor.CallerRunsPolicy());
        executor.setThreadNamePrefix("qzzThread");
        executor.initialize();
        return executor;
    }
}

新建一个类，使用@Autowired配合@Qualifier注解注入我们自定义线程池

@Component
@Async		//该类下所有方法都会另起线程执行
public class MyTest {
    
    
    @Autowired
    @Qualifier("asyncServiceExecutor")	//注入指定名称的bean
    private Executor executor;
    
    
    public CompletableFuture<String> future() throws Exception {
        CompletableFuture<String> future = CompletableFuture.supplyAsync(() -> {
            System.err.println(Thread.currentThread().getName() + "：执行了");
            return "1号选手";
        }, executor).whenComplete((res, e) -> {
            System.err.println(Thread.currentThread().getName() + "：2执行了");
            res += "--2号选手";
            System.err.println(res + "-" + e);
        });
        System.err.println(future.get());
        return future;
    }
    
}