定时任务单线程和多线程

import java.util.concurrent.Executor; import org.springframework.context.annotation.Bean; import org.springframework.context.annotation.Configuration; import org.springframework.scheduling.annotation.EnableAsync; import org.springframework.scheduling.annotation.EnableScheduling; import org.springframework.scheduling.concurrent.ThreadPoolTaskExecutor; @Configuration @EnableAsync//开启异步事件的支持 public class AsyncConfig {       /*      * 此处成员变量应该使用@Value从配置中读取      */     private int corePoolSize = 10;     private int maxPoolSize = 200;     private int queueCapacity = 10;       @Bean     public Executor taskExecutor() {         ThreadPoolTaskExecutor executor = new ThreadPoolTaskExecutor();         executor.setCorePoolSize(corePoolSize);         executor.setMaxPoolSize(maxPoolSize);         executor.setQueueCapacity(queueCapacity);         executor.initialize();         return executor;     }   }

2、定时任务类

+ View Code?

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import org.slf4j.Logger; import org.slf4j.LoggerFactory; import org.springframework.scheduling.annotation.Async; import org.springframework.scheduling.annotation.EnableScheduling; import org.springframework.scheduling.annotation.Scheduled; import org.springframework.stereotype.Component; @Component @EnableScheduling public class ScheduledService {       private Logger logger = LoggerFactory.getLogger(ScheduledService.class);       @Scheduled(cron = "0/5 * * * * *")     @Async     public void scheduled() {         logger.info("=====>>>>>使用cron  {}", System.currentTimeMillis());     }       @Scheduled(fixedRate = 5000)     @Async     public void scheduled1() {         logger.info("=====>>>>>使用fixedRate{}", System.currentTimeMillis());     }       @Scheduled(fixedDelay = 5000)     @Async     public void scheduled2() {         logger.info("=====>>>>>fixedDelay{}", System.currentTimeMillis());     } }