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SpringBoot自定义线程池

news 2025/11/4 15:18:25

1、定义线程池

线程池类：PushExecutorConfig

package com.xjj.task_management.config;

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

import java.util.concurrent.ThreadPoolExecutor;

@Configuration
@EnableAsync
public class PushExecutorConfig {

    /**
     * 配置异步任务执行器
     * @return 返回一个ThreadPoolExecutor对象，用于异步任务的执行
     */
    private static final int corePoolSize = 8;       		// 核心线程数（默认线程数）
    private static final int maxPoolSize = 16;			    // 最大线程数
    private static final int keepAliveTime = 10;			// 允许线程空闲时间（单位：默认为秒）
    private static final int queueCapacity = 100;			// 缓冲队列数
    private static final String threadNamePrefix = "pushTaskExecutor-Service-"; // 线程池名前缀

    @Bean(name = "pushTaskExecutor")
    public ThreadPoolTaskExecutor getAsyncExecutor(){
        ThreadPoolTaskExecutor executor = new ThreadPoolTaskExecutor();
        executor.setCorePoolSize(corePoolSize);
        executor.setMaxPoolSize(maxPoolSize);
        executor.setQueueCapacity(queueCapacity);
        executor.setKeepAliveSeconds(keepAliveTime);
        ThreadPoolExecutor.CallerRunsPolicy refusalStrategy = new ThreadPoolExecutor.CallerRunsPolicy(); //拒绝策略
        executor.setRejectedExecutionHandler(refusalStrategy);
        executor.setThreadNamePrefix(threadNamePrefix);

        // 线程池对拒绝任务的处理策略（提交该任务的线程去处理该任务）
        executor.setRejectedExecutionHandler(new ThreadPoolExecutor.CallerRunsPolicy());
        // 初始化
        executor.initialize();
        return executor;
    }

}