线程池的快速使用

目录

1.设置线程池的参数

2.接收线程池参数

3.使用注解标记

 4.配置bean

5.使用 

---

1.设置线程池的参数

#定时任务线程池参数
task:
  pool:
    corePoolSize: 5 # 核心线程数
    maxPoolSize: 20 #设置最大线程数
    keepAliveSeconds: 300 #设置线程活跃时间,单位秒
    queueCapacity: 100 #设置队列容量

2.接收线程池参数

/**
 * 获取yml文件中的参数
 */
@Data
@ConfigurationProperties(prefix = "task.pool" )
public class TaskThreadPoolConfig {


    private Integer corePoolSize;
    private Integer maxPoolSize;
    private Integer keepAliveSeconds;
    private Integer queueCapacity;
}

3.使用注解标记

使用@EnableConfiggurationProperties（具体的线程池参数类）标记

@MapperScan("com.xz.stock.mapper")
@SpringBootApplication
@EnableConfigurationProperties({TaskThreadPoolConfig.class})
public class JobApplication {
    public static void main(String[] args) {
        SpringApplication.run(JobApplication.class, args);
    }
}

 4.配置bean

/**
 * 定义线程池的配置类
 */
@Configuration
public class TaskExecutePoolConfig {

    @Autowired
    private TaskThreadPoolConfig threadInfo;

    /**
     * 定义线程池bean
     *
     * @return
     */
    @Bean(name = "threadPoolTaskExecutor",destroyMethod = "shutdown")
    public ThreadPoolTaskExecutor threadPoolTaskExecutor() {
        ThreadPoolTaskExecutor taskExecutor = new ThreadPoolTaskExecutor();
        //设置核心线程数
        taskExecutor.setCorePoolSize(threadInfo.getCorePoolSize());
        //设置最大线程数
        taskExecutor.setMaxPoolSize(threadInfo.getMaxPoolSize());
        //置线程活跃时间,单位秒
        taskExecutor.setKeepAliveSeconds(threadInfo.getKeepAliveSeconds());
        //设置队列容量
        taskExecutor.setQueueCapacity(threadInfo.getQueueCapacity());
        //设置拒绝策略
        taskExecutor.setRejectedExecutionHandler(new ThreadPoolExecutor.AbortPolicy());

        //将参数初始化
        taskExecutor.initialize();
        return taskExecutor;
    }
}

5.使用 

class MyTest{

    //注入线程池
    @Autowired
    private ThreadPoolTaskExecutor threadPoolTaskExecutor;

   
    public void getThread() {
        long startTime = System.currentTimeMillis();
            //引入线程池
            threadPoolTaskExecutor.execute(()->{
                //执行的业务
            });
        long endTime = System.currentTimeMillis();
        log.info("执行时间:{}ms",endTime-startTime);

    }

}