Threadlocal 传递研究

以下分三种情况，直接上代码

import com.alibaba.ttl.TransmittableThreadLocal;
import com.alibaba.ttl.threadpool.TtlExecutors;
import org.springframework.scheduling.concurrent.ThreadPoolTaskExecutor;

import java.util.concurrent.Executor;


public class InheritableThreadLocalDemo {


    public static void main(String[] args) {

//        InheritableThreadLocalDemo.test1();
//        InheritableThreadLocalDemo.test2();
        InheritableThreadLocalDemo.test3();



    }

    
    public static void test1(){
        ThreadLocal local = new ThreadLocal<>();
        ThreadPoolTaskExecutor threadPool = new ThreadPoolTaskExecutor();
        threadPool.initialize();
        Executor executor = threadPool.getThreadPoolExecutor();
        local.set("parent main");

        Thread worker = new Thread(new Runnable() {
            @Override
            public void run() {
                System.out.println(local.get());
            }
        });

        executor.execute(worker);
        executor.execute(worker);
        local.set("parent main has changed");

        executor.execute(worker);

    }

    
    public static void test2(){
        ThreadLocal local = new TransmittableThreadLocal<>();
        ThreadPoolTaskExecutor threadPool = new ThreadPoolTaskExecutor();
        threadPool.initialize();
        Executor executor = threadPool.getThreadPoolExecutor();
        local.set("parent main");

        Thread worker = new Thread(new Runnable() {
            @Override
            public void run() {
                System.out.println(local.get());
            }
        });

        executor.execute(worker);
        executor.execute(worker);
        local.set("parent main has changed");

        executor.execute(worker);

    }

    
    public static void test3(){

        ThreadLocal local = new TransmittableThreadLocal<>();
        ThreadPoolTaskExecutor threadPool = new ThreadPoolTaskExecutor();
        threadPool.initialize();
        Executor executor = TtlExecutors.getTtlExecutor(threadPool);
        local.set("parent main");

        Thread worker = new Thread(new Runnable() {
            @Override
            public void run() {
                System.out.println(local.get());
            }
        });

        executor.execute(worker);
        executor.execute(worker);
        local.set("parent main has changed");

        executor.execute(worker);


    }


}