JDK线程池和Spring线程池的使用实例解析
人气:0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;
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