import com.lancoo.common.utils.Threads;
import com.lancoo.common.utils.spring.SpringUtils;

import java.util.TimerTask;
import java.util.concurrent.ScheduledExecutorService;
import java.util.concurrent.TimeUnit;

/**
 * 异步任务管理器
 * 
 * @author lancoo
 */
public class AsyncManager
{
    /**
     * 操作延迟10毫秒
     */
    private final int OPERATE_DELAY_TIME = 10;

    /**
     * 异步操作任务调度线程池
     */
    private ScheduledExecutorService executor = SpringUtils.getBean("scheduledExecutorService");

    /**
     * 单例模式
     */
    private AsyncManager(){}

    private static AsyncManager me = new AsyncManager();

    public static AsyncManager me()
    {
        return me;
    }

    /**
     * 执行任务
     * 
     * @param task 任务
     */
    public void execute(TimerTask task)
    {
        executor.schedule(task, OPERATE_DELAY_TIME, TimeUnit.MILLISECONDS);
    }

    /**
     * 停止任务线程池
     */
    public void shutdown()
    {
        Threads.shutdownAndAwaitTermination(executor);
    }
}

import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

import java.util.concurrent.*;

/**
 * 线程相关工具类.
 * 
 * @author lancoo
 */
public class Threads
{
    private static final Logger logger = LoggerFactory.getLogger(Threads.class);

    /**
     * sleep等待,单位为毫秒
     */
    public static void sleep(long milliseconds)
    {
        try
        {
            Thread.sleep(milliseconds);
        }
        catch (InterruptedException e)
        {
            return;
        }
    }

    /**
     * 停止线程池
     * 先使用shutdown, 停止接收新任务并尝试完成所有已存在任务.
     * 如果超时, 则调用shutdownNow, 取消在workQueue中Pending的任务,并中断所有阻塞函数.
     * 如果仍然超時，則強制退出.
     * 另对在shutdown时线程本身被调用中断做了处理.
     */
    public static void shutdownAndAwaitTermination(ExecutorService pool)
    {
        if (pool != null && !pool.isShutdown())
        {
            pool.shutdown();
            try
            {
                if (!pool.awaitTermination(120, TimeUnit.SECONDS))
                {
                    pool.shutdownNow();
                    if (!pool.awaitTermination(120, TimeUnit.SECONDS))
                    {
                        logger.info("Pool did not terminate");
                    }
                }
            }
            catch (InterruptedException ie)
            {
                pool.shutdownNow();
                Thread.currentThread().interrupt();
            }
        }
    }

    /**
     * 打印线程异常信息
     */
    public static void printException(Runnable r, Throwable t)
    {
        if (t == null && r instanceof Future<?>)
        {
            try
            {
                Future<?> future = (Future<?>) r;
                if (future.isDone())
                {
                    future.get();
                }
            }
            catch (CancellationException ce)
            {
                t = ce;
            }
            catch (ExecutionException ee)
            {
                t = ee.getCause();
            }
            catch (InterruptedException ie)
            {
                Thread.currentThread().interrupt();
            }
        }
        if (t != null)
        {
            logger.error(t.getMessage(), t);
        }
    }
}

import com.lancoo.common.utils.Threads;
import org.apache.commons.lang3.concurrent.BasicThreadFactory;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.scheduling.concurrent.ThreadPoolTaskExecutor;

import java.util.concurrent.ScheduledExecutorService;
import java.util.concurrent.ScheduledThreadPoolExecutor;
import java.util.concurrent.ThreadPoolExecutor;

/**
 * 线程池配置
 *
 **/
@Configuration
public class ThreadPoolConfig
{
    // 核心线程池大小
    private int corePoolSize = 50;

    // 最大可创建的线程数
    private int maxPoolSize = 200;

    // 队列最大长度
    private int queueCapacity = 1000;

    // 线程池维护线程所允许的空闲时间
    private int keepAliveSeconds = 300;

    @Bean(name = "threadPoolTaskExecutor")
    public ThreadPoolTaskExecutor threadPoolTaskExecutor()
    {
        ThreadPoolTaskExecutor executor = new ThreadPoolTaskExecutor();
        executor.setMaxPoolSize(maxPoolSize);
        executor.setCorePoolSize(corePoolSize);
        executor.setQueueCapacity(queueCapacity);
        executor.setKeepAliveSeconds(keepAliveSeconds);
        // 线程池对拒绝任务(无线程可用)的处理策略
        executor.setRejectedExecutionHandler(new ThreadPoolExecutor.CallerRunsPolicy());
        return executor;
    }

    /**
     * 执行周期性或定时任务
     */
    @Bean(name = "scheduledExecutorService")
    protected ScheduledExecutorService scheduledExecutorService()
    {
        return new ScheduledThreadPoolExecutor(corePoolSize,
                new BasicThreadFactory.Builder().namingPattern("schedule-pool-%d").daemon(true).build(),
                new ThreadPoolExecutor.CallerRunsPolicy())
        {
            @Override
            protected void afterExecute(Runnable r, Throwable t)
            {
                super.afterExecute(r, t);
                Threads.printException(r, t);
            }
        };
    }
}

import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.stereotype.Component;

import javax.annotation.PreDestroy;

/**
 * 确保应用退出时能关闭后台线程
 *
 * @author lancoo
 */
@Component
public class ShutdownManager
{
    private static final Logger logger = LoggerFactory.getLogger("sys-user");

    @PreDestroy
    public void destroy()
    {
        shutdownAsyncManager();
    }

    /**
     * 停止异步执行任务
     */
    private void shutdownAsyncManager()
    {
        try
        {
            logger.info("====关闭后台任务任务线程池====");
            AsyncManager.me().shutdown();
        }
        catch (Exception e)
        {
            logger.error(e.getMessage(), e);
        }
    }
}

调用异步时直接使用

或者直接在方法上使用异步注解@Async