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  • InheritableThreadLocal

    public class TestThreadLocal {
    
        // 使用ThreadLocal 子线程获取不到父线程的值
    //    public static ThreadLocal<String> threadLocal = new ThreadLocal<>();
    
        // 使用InheritableThreadLocal 子线程可以获取父线程的值
        /**
         * @see Thread#init(java.lang.ThreadGroup, java.lang.Runnable, java.lang.String, long, java.security.AccessControlContext, boolean)
         * @see InheritableThreadLocal#childValue(java.lang.Object)
         * @see ThreadLocal.ThreadLocalMap#ThreadLocalMap(java.lang.ThreadLocal.ThreadLocalMap)
         */
        public static InheritableThreadLocal<String> threadLocal = new InheritableThreadLocal<>();
    
        public static void main(String...args){
            threadLocal.set("Hello");
    
            Thread thread = new Thread(()->System.out.println("thread:" + threadLocal.get()));
            thread.start();
    
            System.out.println("main:" + threadLocal.get());
        }
    }
    
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  • 原文地址:https://www.cnblogs.com/fly-book/p/15140239.html
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