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;