SpringBoot安全线程锁工具类[通俗易懂]

import java.util.concurrent.ConcurrentHashMap;
import java.util.concurrent.locks.LockSupport;

public class LockSupportUtil {
    //存放线程引用的全局容器
    public static final ConcurrentHashMap<Integer, Thread> Thread_Pointer_Map = new ConcurrentHashMap<>();

    /**
     * 锁住线程
     *
     * @param address     存放线程的Key，建议使用System.identityHashCode(Thread.currentThread())来生产Key
     * @param thread      线程对象
     * @param millisecond 超时自动释放线程
     * @return
     */
    public static void lock(int address, Thread thread, long millisecond) {
        //如果地址被占用，则直接释放掉
        Thread thread001 = Thread_Pointer_Map.get(address);
        if (thread001 != null) {
            LockSupport.unpark(thread001);
            Thread_Pointer_Map.remove(address);
        }
        Thread_Pointer_Map.put(address, thread);
        LockSupport.parkUntil(thread, System.currentTimeMillis() + millisecond);
    }

    /**
     * 释放线程
     *
     * @param address 线程Key
     */
    public static void unlock(int address) {
        Thread thread = Thread_Pointer_Map.get(address);
        if (thread != null) {
            LockSupport.unpark(thread);
            Thread_Pointer_Map.remove(address);
        }
    }
}