springboot中使用线程池-优快云博客

本文详细介绍了一个Spring项目中线程池的具体配置方法，包括核心线程数、最大线程数、队列容量等参数设置，并展示了如何通过Bean的方式进行注入。

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import java.util.concurrent.ThreadPoolExecutor;

import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.scheduling.annotation.AsyncConfigurerSupport;
import org.springframework.scheduling.concurrent.ThreadPoolTaskExecutor;


@Configuration
public class DefaultThreadPoolConfig extends AsyncConfigurerSupport {

    /** Set the ThreadPoolExecutor's core pool size. */
    private int corePoolSize = 4;
    /** Set the ThreadPoolExecutor's maximum pool size. */
    private int maxPoolSize = 16;
    /** Set the capacity for the ThreadPoolExecutor's BlockingQueue. */
    private int queueCapacity = 10;

    private String threadNamePrefix = "omsAsyncExecutor-";

    @Bean
    @Override
    public ThreadPoolTaskExecutor getAsyncExecutor() {
        ThreadPoolTaskExecutor executor = new ThreadPoolTaskExecutor();
        executor.setCorePoolSize(corePoolSize);
        executor.setMaxPoolSize(maxPoolSize);
        executor.setQueueCapacity(queueCapacity);
        executor.setThreadNamePrefix(threadNamePrefix);

        // rejection-policy：当pool已经达到max size的时候，如何处理新任务
        // CALLER_RUNS：不在新线程中执行任务，而是由调用者所在的线程来执行
        executor.setRejectedExecutionHandler(new ThreadPoolExecutor.CallerRunsPolicy());
       //一定要等线程执行完成的时候才去关闭线程池
        executor.setWaitForTasksToCompleteOnShutdown(true);
     //最大等待时间60s
        executor.setAwaitTerminationSeconds(60);
    //项目启动的时候就初始化线程池，避免到调用的时候才初始化
        executor.initialize();
        return executor;
    }

}

如果项目中其它地方有用到线程池，把ThreadPoolTaskExecutor注入即可。

转载于:https://my.oschina.net/hnqingping1255/blog/1862700