Spring Boot 中自定义线程池的正确使用姿势：定义、注入与最佳实践

五阿哥永琪2025-12-17 20:42

文章目录

线程池
- [1. 定义线程池](#1. 定义线程池)
- [2. 注入线程池](#2. 注入线程池)

线程池

1. 定义线程池

定义线程池工具类value起别名

java 复制代码

@Component
public class ThreadUtil {

    @Bean("executorService")
    public ExecutorService executorService() {
        return new ThreadPoolExecutor(
                10,                    // 核心线程数
                30,                    // 最大线程数
                60, TimeUnit.SECONDS,  // 空闲线程存活时间
                new ArrayBlockingQueue<>(500), // 有界队列
                new ThreadFactory() {  // 自定义线程名
                    private final AtomicInteger index = new AtomicInteger(1);
                    @Override
                    public Thread newThread(Runnable r) {
                        return new Thread(r, "task-pool-" + index.getAndIncrement());
                    }
                },
                new ThreadPoolExecutor.CallerRunsPolicy() // 拒绝策略
        );
    }
}

2. 注入线程池

注入线程池，要用@Qualifier来与value的值对应
@Resource()

java 复制代码

@Service
public class TaskService {

    @Resource(name = "executorService")
    private ExecutorService executorService;

    public void doTask() {
        executorService.execute(() -> {
            System.out.println("执行任务 → " + Thread.currentThread().getName());
        });
    }
}

@AutoWrite()

java 复制代码

@Service
public class TaskService {

    @Autowired
    @Qualifier("executorService")
    private ExecutorService executorService;

}

构造器注入

java 复制代码

@Service
public class TaskService {

    private final ExecutorService executorService;

    public TaskService(@Qualifier("executorService") ExecutorService executorService) {
        this.executorService = executorService;
    }
}