SpringBoot 自定义线程池

作者: FantJ | 来源:发表于2018-03-25 21:25 被阅读864次

    我们都知道spring只是为我们简单的处理线程池,每次用到线程总会new 一个新的线程,效率不高,所以我们需要自定义一个线程池。

    本教程目录:

    1. 自定义线程池
    2. 配置spring默认的线程池

    1. 自定义线程池

    1.1 修改application.properties
    task.pool.corePoolSize=20
    task.pool.maxPoolSize=40
    task.pool.keepAliveSeconds=300
    task.pool.queueCapacity=50
    
    1.2 线程池配置属性类TaskThreadPoolConfig .java
    import org.springframework.boot.context.properties.ConfigurationProperties;
    
    /**
     * 线程池配置属性类
     * Created by Fant.J.
     */
    @ConfigurationProperties(prefix = "task.pool")
    public class TaskThreadPoolConfig {
        private int corePoolSize;
    
        private int maxPoolSize;
    
        private int keepAliveSeconds;
    
        private int queueCapacity;
        ...getter and setter methods...
    }
    
    1.3 创建线程池 TaskExecutePool .java
    /**
     * 创建线程池
     * Created by Fant.J.
     */
    @Configuration
    @EnableAsync
    public class TaskExecutePool {
        @Autowired
        private TaskThreadPoolConfig config;
    
        @Bean
        public Executor myTaskAsyncPool() {
            ThreadPoolTaskExecutor executor = new ThreadPoolTaskExecutor();
            //核心线程池大小
            executor.setCorePoolSize(config.getCorePoolSize());
            //最大线程数
            executor.setMaxPoolSize(config.getMaxPoolSize());
            //队列容量
            executor.setQueueCapacity(config.getQueueCapacity());
            //活跃时间
            executor.setKeepAliveSeconds(config.getKeepAliveSeconds());
            //线程名字前缀
            executor.setThreadNamePrefix("MyExecutor-");
    
            // setRejectedExecutionHandler:当pool已经达到max size的时候,如何处理新任务
            // CallerRunsPolicy: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());
            executor.initialize();
            return executor;
        }
    }
    
    
    1.4 创建线程任务
    /**
     * Created by Fant.J.
     */
    @Component
    public class AsyncTask {
        protected final Logger logger = LoggerFactory.getLogger(this.getClass());
    
        @Async("myTaskAsyncPool")  //myTaskAsynPool即配置线程池的方法名,此处如果不写自定义线程池的方法名,会使用默认的线程池
        public void doTask1(int i) throws InterruptedException{
            logger.info("Task"+i+" started.");
        }
    }
    
    
    1.5 修改启动类

    给启动类添加注解

    @EnableAsync
    @EnableConfigurationProperties({TaskThreadPoolConfig.class} ) // 开启配置属性支持
    
    1.6 测试
        protected final Logger logger = LoggerFactory.getLogger(this.getClass());
        @Autowired
        private AsyncTask asyncTask;
    
        @Test
        public void AsyncTaskTest() throws InterruptedException, ExecutionException {
    
            for (int i = 0; i < 100; i++) {
                asyncTask.doTask1(i);
            }
            logger.info("All tasks finished.");
        }
    

    2. 配置默认的线程池

    我本人喜欢用这种方式的线程池,因为上面的那个线程池使用时候总要加注解@Async("myTaskAsyncPool"),而这种重写spring默认线程池的方式使用的时候,只需要加@Async注解就可以,不用去声明线程池类。

    2.1 获取属性配置类

    这个和上面的TaskThreadPoolConfig类相同,这里不重复

    2.2 NativeAsyncTaskExecutePool.java 装配线程池
    /**
     * 原生(Spring)异步任务线程池装配类
     * Created by Fant.J.
     */
    @Slf4j
    @Configuration
    public class NativeAsyncTaskExecutePool implements AsyncConfigurer{
    
    
        //注入配置类
        @Autowired
        TaskThreadPoolConfig config;
    
        @Override
        public Executor getAsyncExecutor() {
            ThreadPoolTaskExecutor executor = new ThreadPoolTaskExecutor();
            //核心线程池大小
            executor.setCorePoolSize(config.getCorePoolSize());
            //最大线程数
            executor.setMaxPoolSize(config.getMaxPoolSize());
            //队列容量
            executor.setQueueCapacity(config.getQueueCapacity());
            //活跃时间
            executor.setKeepAliveSeconds(config.getKeepAliveSeconds());
            //线程名字前缀
            executor.setThreadNamePrefix("MyExecutor-");
    
            // setRejectedExecutionHandler:当pool已经达到max size的时候,如何处理新任务
            // CallerRunsPolicy: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());
            executor.initialize();
            return executor;
        }
    
    
        /**
         *  异步任务中异常处理
         * @return
         */
        @Override
        public AsyncUncaughtExceptionHandler getAsyncUncaughtExceptionHandler() {
            return new AsyncUncaughtExceptionHandler() {
    
                @Override
                public void handleUncaughtException(Throwable arg0, Method arg1, Object... arg2) {
                    log.error("=========================="+arg0.getMessage()+"=======================", arg0);
                    log.error("exception method:"+arg1.getName());
                }
            };
        }
    }
    
    
    2.3 线程任务类AsyncTask .java
    @Component
    public class AsyncTask {
        protected final Logger logger = LoggerFactory.getLogger(this.getClass());
    
        @Async
        public void doTask2(int i) throws InterruptedException{
            logger.info("Task2-Native"+i+" started.");
        }
    }
    
    2.4 测试
        @Test
        public void AsyncTaskNativeTest() throws InterruptedException, ExecutionException {
    
            for (int i = 0; i < 100; i++) {
                asyncTask.doTask2(i);
            }
    
            logger.info("All tasks finished.");
        }
    
    2018-03-25 21:23:07.655  INFO 4668 --- [   MyExecutor-8] c.l.securitydemo.mythreadpool.AsyncTask  : Task2-Native6 started.
    2018-03-25 21:23:07.655  INFO 4668 --- [   MyExecutor-3] c.l.securitydemo.mythreadpool.AsyncTask  : Task2-Native1 started.
    2018-03-25 21:23:07.655  INFO 4668 --- [   MyExecutor-9] c.l.securitydemo.mythreadpool.AsyncTask  : Task2-Native7 started.
    2018-03-25 21:23:07.656  INFO 4668 --- [   MyExecutor-9] c.l.securitydemo.mythreadpool.AsyncTask  : Task2-Native21 started.
    2018-03-25 21:23:07.656  INFO 4668 --- [   MyExecutor-9] c.l.securitydemo.mythreadpool.AsyncTask  : Task2-Native22 started.
    2018-03-25 21:23:07.656  INFO 4668 --- [   MyExecutor-9] c.l.securitydemo.mythreadpool.AsyncTask  : Task2-Native23 started.
    2018-03-25 21:23:07.656  INFO 4668 --- [   MyExecutor-9] c.l.securitydemo.mythreadpool.AsyncTask  : Task2-Native24 started.
    2018-03-25 21:23:07.656  INFO 4668 --- [   MyExecutor-9] c.l.securitydemo.mythreadpool.AsyncTask  : Task2-Native25 started.
    2018-03-25 21:23:07.656  INFO 4668 --- [   MyExecutor-9] c.l.securitydemo.mythreadpool.AsyncTask  : Task2-Native26 started.
    2018-03-25 21:23:07.656  INFO 4668 --- [   MyExecutor-9] c.l.securitydemo.mythreadpool.AsyncTask  : Task2-Native27 started.
    2018-03-25 21:23:07.656  INFO 4668 --- [   MyExecutor-9] c.l.securitydemo.mythreadpool.AsyncTask  : Task2-Native28 started.
    2018-03-25 21:23:07.656  INFO 4668 --- [   MyExecutor-9] c.l.securitydemo.mythreadpool.AsyncTask  : Task2-Native29 started.
    2018-03-25 21:23:07.656  INFO 4668 --- [   MyExecutor-9] c.l.securitydemo.mythreadpool.AsyncTask  : Task2-Native30 started.
    2018-03-25 21:23:07.656  INFO 4668 --- [   MyExecutor-9] c.l.securitydemo.mythreadpool.AsyncTask  : Task2-Native31 started.
    2018-03-25 21:23:07.656  INFO 4668 --- [   MyExecutor-9] c.l.securitydemo.mythreadpool.AsyncTask  : Task2-Native32 started.
    2018-03-25 21:23:07.656  INFO 4668 --- [   MyExecutor-9] c.l.securitydemo.mythreadpool.AsyncTask  : Task2-Native33 started.
    2018-03-25 21:23:07.656  INFO 4668 --- [   MyExecutor-9] c.l.securitydemo.mythreadpool.AsyncTask  : Task2-Native34 started.
    2018-03-25 21:23:07.656  INFO 4668 --- [   MyExecutor-9] c.l.securitydemo.mythreadpool.AsyncTask  : Task2-Native35 started.
    2018-03-25 21:23:07.656  INFO 4668 --- [   MyExecutor-9] c.l.securitydemo.mythreadpool.AsyncTask  : Task2-Native36 started.
    2018-03-25 21:23:07.656  INFO 4668 --- [   MyExecutor-9] c.l.securitydemo.mythreadpool.AsyncTask  : Task2-Native37 started.
    2018-03-25 21:23:07.656  INFO 4668 --- [   MyExecutor-9] c.l.securitydemo.mythreadpool.AsyncTask  : Task2-Native38 started.
    2018-03-25 21:23:07.656  INFO 4668 --- [   MyExecutor-9] c.l.securitydemo.mythreadpool.AsyncTask  : Task2-Native39 started.
    2018-03-25 21:23:07.656  INFO 4668 --- [   MyExecutor-9] c.l.securitydemo.mythreadpool.AsyncTask  : Task2-Native40 started.
    2018-03-25 21:23:07.656  INFO 4668 --- [   MyExecutor-9] c.l.securitydemo.mythreadpool.AsyncTask  : Task2-Native41 started.
    2018-03-25 21:23:07.657  INFO 4668 --- [   MyExecutor-9] c.l.securitydemo.mythreadpool.AsyncTask  : Task2-Native42 started.
    2018-03-25 21:23:07.657  INFO 4668 --- [   MyExecutor-9] c.l.securitydemo.mythreadpool.AsyncTask  : Task2-Native43 started.
    2018-03-25 21:23:07.657  INFO 4668 --- [   MyExecutor-9] c.l.securitydemo.mythreadpool.AsyncTask  : Task2-Native44 started.
    2018-03-25 21:23:07.657  INFO 4668 --- [   MyExecutor-9] c.l.securitydemo.mythreadpool.AsyncTask  : Task2-Native45 started.
    2018-03-25 21:23:07.657  INFO 4668 --- [   MyExecutor-9] c.l.securitydemo.mythreadpool.AsyncTask  : Task2-Native46 started.
    2018-03-25 21:23:07.658  INFO 4668 --- [   MyExecutor-9] c.l.securitydemo.mythreadpool.AsyncTask  : Task2-Native47 started.
    2018-03-25 21:23:07.655  INFO 4668 --- [   MyExecutor-7] c.l.securitydemo.mythreadpool.AsyncTask  : Task2-Native5 started.
    2018-03-25 21:23:07.658  INFO 4668 --- [   MyExecutor-7] c.l.securitydemo.mythreadpool.AsyncTask  : Task2-Native49 started.
    2018-03-25 21:23:07.658  INFO 4668 --- [   MyExecutor-7] c.l.securitydemo.mythreadpool.AsyncTask  : Task2-Native50 started.
    2018-03-25 21:23:07.658  INFO 4668 --- [  MyExecutor-11] c.l.securitydemo.mythreadpool.AsyncTask  : Task2-Native9 started.
    2018-03-25 21:23:07.655  INFO 4668 --- [   MyExecutor-6] c.l.securitydemo.mythreadpool.AsyncTask  : Task2-Native4 started.
    2018-03-25 21:23:07.659  INFO 4668 --- [   MyExecutor-6] c.l.securitydemo.mythreadpool.AsyncTask  : Task2-Native53 started.
    2018-03-25 21:23:07.659  INFO 4668 --- [   MyExecutor-6] c.l.securitydemo.mythreadpool.AsyncTask  : Task2-Native54 started.
    2018-03-25 21:23:07.659  INFO 4668 --- [   MyExecutor-6] c.l.securitydemo.mythreadpool.AsyncTask  : Task2-Native55 started.
    2018-03-25 21:23:07.659  INFO 4668 --- [   MyExecutor-6] c.l.securitydemo.mythreadpool.AsyncTask  : Task2-Native56 started.
    2018-03-25 21:23:07.659  INFO 4668 --- [   MyExecutor-6] c.l.securitydemo.mythreadpool.AsyncTask  : Task2-Native57 started.
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    2018-03-25 21:23:07.655  INFO 4668 --- [   MyExecutor-5] c.l.securitydemo.mythreadpool.AsyncTask  : Task2-Native3 started.
    2018-03-25 21:23:07.655  INFO 4668 --- [   MyExecutor-4] c.l.securitydemo.mythreadpool.AsyncTask  : Task2-Native2 started.
    2018-03-25 21:23:07.656  INFO 4668 --- [   MyExecutor-8] c.l.securitydemo.mythreadpool.AsyncTask  : Task2-Native19 started.
    2018-03-25 21:23:07.656  INFO 4668 --- [   MyExecutor-2] c.l.securitydemo.mythreadpool.AsyncTask  : Task2-Native0 started.
    2018-03-25 21:23:07.656  INFO 4668 --- [   MyExecutor-3] c.l.securitydemo.mythreadpool.AsyncTask  : Task2-Native20 started.
    2018-03-25 21:23:07.657  INFO 4668 --- [  MyExecutor-10] c.l.securitydemo.mythreadpool.AsyncTask  : Task2-Native8 started.
    2018-03-25 21:23:07.658  INFO 4668 --- [   MyExecutor-9] c.l.securitydemo.mythreadpool.AsyncTask  : Task2-Native48 started.
    2018-03-25 21:23:07.658  INFO 4668 --- [   MyExecutor-7] c.l.securitydemo.mythreadpool.AsyncTask  : Task2-Native51 started.
    2018-03-25 21:23:07.658  INFO 4668 --- [  MyExecutor-11] c.l.securitydemo.mythreadpool.AsyncTask  : Task2-Native52 started.
    2018-03-25 21:23:07.658  INFO 4668 --- [  MyExecutor-12] c.l.securitydemo.mythreadpool.AsyncTask  : Task2-Native10 started.
    2018-03-25 21:23:07.661  INFO 4668 --- [  MyExecutor-13] c.l.securitydemo.mythreadpool.AsyncTask  : Task2-Native11 started.
    2018-03-25 21:23:07.662  INFO 4668 --- [  MyExecutor-14] c.l.securitydemo.mythreadpool.AsyncTask  : Task2-Native12 started.
    2018-03-25 21:23:07.662  INFO 4668 --- [  MyExecutor-15] c.l.securitydemo.mythreadpool.AsyncTask  : Task2-Native13 started.
    2018-03-25 21:23:07.663  INFO 4668 --- [  MyExecutor-16] c.l.securitydemo.mythreadpool.AsyncTask  : Task2-Native14 started.
    2018-03-25 21:23:07.663  INFO 4668 --- [  MyExecutor-17] c.l.securitydemo.mythreadpool.AsyncTask  : Task2-Native15 started.
    2018-03-25 21:23:07.663  INFO 4668 --- [  MyExecutor-18] c.l.securitydemo.mythreadpool.AsyncTask  : Task2-Native16 started.
    2018-03-25 21:23:07.663  INFO 4668 --- [  MyExecutor-19] c.l.securitydemo.mythreadpool.AsyncTask  : Task2-Native17 started.
    2018-03-25 21:23:07.664  INFO 4668 --- [  MyExecutor-20] c.l.securitydemo.mythreadpool.AsyncTask  : Task2-Native18 started.
    2018-03-25 21:23:07.664  INFO 4668 --- [  MyExecutor-21] c.l.securitydemo.mythreadpool.AsyncTask  : Task2-Native69 started.
    2018-03-25 21:23:07.664  INFO 4668 --- [           main] c.l.securitydemo.mythreadpool.AsyncTask  : Task2-Native89 started.
    2018-03-25 21:23:07.664  INFO 4668 --- [   MyExecutor-6] c.l.securitydemo.mythreadpool.AsyncTask  : Task2-Native90 started.
    2018-03-25 21:23:07.664  INFO 4668 --- [  MyExecutor-22] c.l.securitydemo.mythreadpool.AsyncTask  : Task2-Native70 started.
    2018-03-25 21:23:07.664  INFO 4668 --- [   MyExecutor-5] c.l.securitydemo.mythreadpool.AsyncTask  : Task2-Native91 started.
    2018-03-25 21:23:07.664  INFO 4668 --- [   MyExecutor-5] c.l.securitydemo.mythreadpool.AsyncTask  : Task2-Native92 started.
    2018-03-25 21:23:07.664  INFO 4668 --- [   MyExecutor-8] c.l.securitydemo.mythreadpool.AsyncTask  : Task2-Native93 started.
    2018-03-25 21:23:07.664  INFO 4668 --- [   MyExecutor-2] c.l.securitydemo.mythreadpool.AsyncTask  : Task2-Native94 started.
    2018-03-25 21:23:07.664  INFO 4668 --- [  MyExecutor-10] c.l.securitydemo.mythreadpool.AsyncTask  : Task2-Native95 started.
    2018-03-25 21:23:07.664  INFO 4668 --- [   MyExecutor-3] c.l.securitydemo.mythreadpool.AsyncTask  : Task2-Native96 started.
    2018-03-25 21:23:07.664  INFO 4668 --- [   MyExecutor-7] c.l.securitydemo.mythreadpool.AsyncTask  : Task2-Native98 started.
    2018-03-25 21:23:07.664  INFO 4668 --- [   MyExecutor-9] c.l.securitydemo.mythreadpool.AsyncTask  : Task2-Native97 started.
    2018-03-25 21:23:07.664  INFO 4668 --- [  MyExecutor-11] c.l.securitydemo.mythreadpool.AsyncTask  : Task2-Native99 started.
    2018-03-25 21:23:07.664  INFO 4668 --- [           main] com.laojiao.securitydemo.ControllerTest  : All tasks finished.
    2018-03-25 21:23:07.666  INFO 4668 --- [  MyExecutor-23] c.l.securitydemo.mythreadpool.AsyncTask  : Task2-Native71 started.
    2018-03-25 21:23:07.667  INFO 4668 --- [  MyExecutor-24] c.l.securitydemo.mythreadpool.AsyncTask  : Task2-Native72 started.
    2018-03-25 21:23:07.667  INFO 4668 --- [  MyExecutor-25] c.l.securitydemo.mythreadpool.AsyncTask  : Task2-Native73 started.
    2018-03-25 21:23:07.669  INFO 4668 --- [  MyExecutor-26] c.l.securitydemo.mythreadpool.AsyncTask  : Task2-Native74 started.
    2018-03-25 21:23:07.669  INFO 4668 --- [  MyExecutor-27] c.l.securitydemo.mythreadpool.AsyncTask  : Task2-Native75 started.
    2018-03-25 21:23:07.673  INFO 4668 --- [  MyExecutor-28] c.l.securitydemo.mythreadpool.AsyncTask  : Task2-Native76 started.
    2018-03-25 21:23:07.674  INFO 4668 --- [  MyExecutor-29] c.l.securitydemo.mythreadpool.AsyncTask  : Task2-Native77 started.
    2018-03-25 21:23:07.674  INFO 4668 --- [  MyExecutor-30] c.l.securitydemo.mythreadpool.AsyncTask  : Task2-Native78 started.
    2018-03-25 21:23:07.676  INFO 4668 --- [  MyExecutor-31] c.l.securitydemo.mythreadpool.AsyncTask  : Task2-Native79 started.
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    2018-03-25 21:23:07.679  INFO 4668 --- [  MyExecutor-37] c.l.securitydemo.mythreadpool.AsyncTask  : Task2-Native85 started.
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    2018-03-25 21:23:07.680  INFO 4668 --- [  MyExecutor-39] c.l.securitydemo.mythreadpool.AsyncTask  : Task2-Native87 started.
    2018-03-25 21:23:07.680  INFO 4668 --- [  MyExecutor-40] c.l.securitydemo.mythreadpool.AsyncTask  : Task2-Native88 started.
    

    介绍下我的所有文集:

    流行框架

    SpringCloud
    springboot
    nginx
    redis

    底层实现原理:

    Java NIO教程
    Java reflection 反射详解
    Java并发学习笔录
    Java Servlet教程
    jdbc组件详解
    Java NIO教程
    Java语言/版本 研究

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