SpringBoot2对接线程池

1、配置线程池Bean

package com.itennishy.test.config;

import java.util.concurrent.ThreadPoolExecutor;

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

/**
 * 线程池配置
 * @author zhh
 *
 */
@Configuration
@EnableAsync
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;
    }
}

2、配置Service测试接口

package com.itennishy.test.service;

import lombok.extern.slf4j.Slf4j;
import org.springframework.scheduling.annotation.Async;
import org.springframework.stereotype.Component;
import org.springframework.stereotype.Service;

@Slf4j
//@Component
@Service
public class OrderTaskServic {

    @Async
    public void orderTask() throws InterruptedException {
        log.info("发送短信方法---- 1   执行开始");
        Thread.sleep(5000); // 模拟耗时
        log.info("发送短信方法---- 1   执行结束");
    }

}

3、编写测试的Controller

package com.itennishy.test.controller;

import com.itennishy.test.service.OrderTaskServic;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.ResponseBody;
import org.springframework.web.bind.annotation.RestController;


@RestController
public class TestController {
    @Autowired
    private OrderTaskServic orderTaskServic;

    @GetMapping("/test1")
    @ResponseBody
    public void test1() {
        while (true){
            try {
                orderTaskServic.orderTask();
            } catch (InterruptedException e) {
                e.printStackTrace();
            }
        }
    }

}