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- package ieven.server.webapp.infrastructure;
- import org.springframework.context.annotation.Bean;
- import org.springframework.context.annotation.Configuration;
- import org.springframework.scheduling.concurrent.ThreadPoolTaskExecutor;
- import java.util.concurrent.ThreadPoolExecutor;
- @Configuration
- public class ThreadPoolTaskConfig {
- /**
- * 默认情况下,在创建了线程池后,线程池中的线程数为0,当有任务来之后,就会创建一个线程去执行任务,
- * 当线程池中的线程数目达到corePoolSize后,就会把到达的任务放到缓存队列当中;
- * 当队列满了,就继续创建线程,当线程数量大于等于maxPoolSize后,开始使用拒绝策略拒绝
- */
- /**
- * 核心线程数(默认线程数)
- */
- private static final int corePoolSize = 20;
- /**
- * 最大线程数
- */
- private static final int maxPoolSize = 100;
- /**
- * 允许线程空闲时间(单位:默认为秒)
- */
- private static final int keepAliveTime = 10;
- /**
- * 缓冲队列大小
- */
- private static final int queueCapacity = 200;
- /**
- * 线程池名前缀
- */
- private static final String threadNamePrefix = "Async-Service-";
- @Bean("taskExecutor") // bean的名称,默认为首字母小写的方法名
- public ThreadPoolTaskExecutor taskExecutor() {
- ThreadPoolTaskExecutor executor = new ThreadPoolTaskExecutor();
- executor.setCorePoolSize(corePoolSize);
- executor.setMaxPoolSize(maxPoolSize);
- executor.setQueueCapacity(queueCapacity);
- executor.setKeepAliveSeconds(keepAliveTime);
- executor.setThreadNamePrefix(threadNamePrefix);
- // 线程池对拒绝任务的处理策略
- // CallerRunsPolicy:由调用线程(提交任务的线程)处理该任务
- executor.setRejectedExecutionHandler(new ThreadPoolExecutor.CallerRunsPolicy());
- // 初始化
- executor.initialize();
- return executor;
- }
- }
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