Question

我们在线程局部变量中存储了一些值，并且我们在Spring ThreadPoolTaskExecutor中使用了线程池，因此一旦执行任务，我们就必须清除线程局部变量。我们尝试为Runnable提供自定义的ThreadFactory和包装器，以查看执行任务后是否可以清除线程本地。但是runnable.run（）之后的行永远不会执行，请参见下面的代码。想知道我做错了什么还是我误解了什么以及实现我想要的正确方法，即清除线程池环境中的线程局部变量。

    // ThreadPoolTaskExecutor configuration
    @Bean
    public TaskExecutor threadPoolTaskExecutor() {
        ThreadPoolTaskExecutor executor = new ThreadPoolTaskExecutor();
        executor.setCorePoolSize(100);
        executor.setMaxPoolSize(1000);
        executor.setThreadNamePrefix("default_task_executor_thread");
        executor.setThreadFactory(new CustomThreadFactory());
        executor.initialize();
        return executor;
    }

    // Custom thread factory
    public class CustomThreadFactory implements ThreadFactory{

        @Override
        public Thread newThread(Runnable r) {
            return new Thread(new CustomRunnable(r));
        }

        public static class CustomRunnable implements Runnable {

            private Runnable runnable;


            protected CustomRunnable(Runnable runnable) {
                super();
                this.runnable = runnable;
            }


            @Override
            public void run() {
                System.out.println("*******START*******");
                this.runnable.run();

                // I thought we could clear the thread locals here but this line is never executed
                System.out.println("*******FINISH*******");
            }

        }
  }

在线程池环境中清除线程本地

0 个答案: