springboot 使用线程池处理多线程任务

一、创建线程池

@Configuration
@EnableAsync
public class SpringAsyncConfig {

    @Bean("taskExecutor")
    public Executor asyncServiceExecutor() {
        ThreadPoolTaskExecutor executor = new ThreadPoolTaskExecutor();
        // 设置核心线程数
        executor.setCorePoolSize(5);
        // 设置最大线程数
        executor.setMaxPoolSize(20);
        //配置队列大小
        executor.setQueueCapacity(Integer.MAX_VALUE);
        // 设置线程活跃时间（秒）
        executor.setKeepAliveSeconds(60);
        // 设置默认线程名称
        executor.setThreadNamePrefix("xcc");
        // 等待所有任务结束后再关闭线程池
        executor.setWaitForTasksToCompleteOnShutdown(true);
        //执行初始化
        executor.initialize();
        return executor;
    }
}

二、创建使用线程池的server（网上有人说线程任务最好放到一个server里面不然会造成循环依赖。。。未验证）

public interface ThreadUtilsService {
    /**
     * 获取用户下的考勤记录
     * @param wechatUser
     */
    void setAttendance(WechatUser wechatUser, CountDownLatch countDownLatch);
}

@Service
public class ThreadUtilsServiceImpl implements ThreadUtilsService {
    @Autowired
    private AttendanceService attendanceService;

    @Async("taskExecutor")
    @Override
    public void setAttendance(WechatUser wechatUser, CountDownLatch countDownLatch) {
        List<Attendance> currentClockListByOpenId = attendanceService.getCurrentClockListByOpenId(wechatUser);
        countDownLatch.countDown();
        wechatUser.setAttendanceList(currentClockListByOpenId);
    }
}


三、调用

threadUtilsService.setAttendance(record,countDownLatch);