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    JDK线程池和Spring线程池的使用实例解析

    栏目:Linux/apache问题 时间:2019-12-01 16:33

    这篇文章主要介绍了JDK线程池和Spring线程池的使用实例解析,文中通过示例代码介绍的非常详细,对大家的学习或者工作具有一定的参考学习价值,需要的朋友可以参考下

    JDK线程池和Spring线程池实例,异步调用,可以直接使用

    (1)JDK线程池的使用,此处采用单例的方式提供,见示例:

    public class ThreadPoolUtil {
    	private static int corePoolSize = 5;
    	private static int maximumPoolSize = 10;
    	private static long keepAliveTime = 60L;
    	private static TimeUnit unit = TimeUnit.SECONDS;
    	private static int capacity = 1024;
    	private static ThreadFactory namedThreadFactory = new ThreadFactoryBuilder().setNameFormat("jdk-thread-pool-%d").build();
    	private static final ExecutorService executorService = new ThreadPoolExecutor(corePoolSize,
    	maximumPoolSize,
    	keepAliveTime,
    	unit,
    	new LinkedBlockingQueue<>(capacity),
    	namedThreadFactory,
    	new ThreadPoolExecutor.AbortPolicy());
    	private ThreadPoolUtil () {
    	}
    	public static ExecutorService getExecutorService () {
    		return executorService;
    	}
    }

    在其它地方可以直接这样使用:

    ThreadPoolUtil.getExecutorService().execute(() -> {
    	System.out.println("test1");
    	System.out.println("test2");
    }
    )

    (2)Spring线程池的使用,此处通过配置类的方式配置线程池的相关属性,见示例:

    @Configuration
    @EnableAsync
    public class DocataThreadBeanConfig {
    	private int corePoolSize = 5;
    	private int maxPoolSize = 10;
    	private int queueCapacity = 1024;
    	private String namePrefix = "async-service-task-";
    	// 上述属性可以通过@Value来读取配置值
    	@Bean(name = "asyncServiceTaskExecutor")
    	public TaskExecutor asyncServiceExecutor() {
    		ThreadPoolTaskExecutor executor = new ThreadPoolTaskExecutor();
    		// 设置核心线程数
    		executor.setCorePoolSize(corePoolSize);
    		// 设置最大线程数
    		executor.setMaxPoolSize(maxPoolSize);
    		// 设置队列容量
    		executor.setQueueCapacity(queueCapacity);
    		// 设置线程活跃时间(秒)
    		executor.setKeepAliveSeconds(60);
    		// 设置默认线程名称
    		executor.setThreadNamePrefix(namePrefix);
    		// 设置拒绝策略
    		executor.setRejectedExecutionHandler(new ThreadPoolExecutor.CallerRunsPolicy());
    		// 等待所有任务结束后再关闭线程池
    		executor.setWaitForTasksToCompleteOnShutdown(true);
    		executor.initialize();
    		;
    		return executor;
    	}
    }

    在其它文件中需要这样使用:

    @Resource(name="asyncServiceTaskExecutor")
    private ThreadPoolTaskExecutor asyncServiceTaskExecutor;

    不要直接使用@Autowired,否则会提示失败的

    @Autowired
    private ThreadPoolTaskExecutor asyncServiceTaskExecutor;

    以上就是本文的全部内容,希望对大家的学习有所帮助,也希望大家多多支持IIS7站长之家。