线程中断方法

一、通过volatile实现线程中断

因为volatile能保证在多线程之间，一旦变量修改，能够立马通知到其他持有该变量的线程值被改变。所以我们可以利用volatile这个特性来实现线程中断。

package com.llx.springsecurity.util;

import java.util.concurrent.TimeUnit;

/**
 * description: ThreadInterrupt <br>
 *
 * @date: 2022/7/30 0030 下午 3:47 <br>
 * @author: William <br>
 * version: 1.0 <br>
 */
public class ThreadInterrupt {

    static volatile boolean isStop = false;

    public static void main(String[] args) {
        new Thread(() ->{
            while(true){
                if(isStop){
                    System.out.println("=============线程终止============");
                    break;
                }
                System.out.println("=============任务进行============");
            }
        },"t1").start();

        try {
            TimeUnit.SECONDS.sleep(2);
        } catch (InterruptedException e) {
            e.printStackTrace();
        }
        new Thread(() ->{
            isStop = true;
            System.out.println("===========设置状态为true===========");
        },"t2").start();
    }

}

二、通过AtomicBoolean实现线程中断

package com.llx.springsecurity.util;

import java.util.concurrent.TimeUnit;
import java.util.concurrent.atomic.AtomicBoolean;

/**
 * description: ThreadInterrupt <br>
 *
 * @date: 2022/7/30 0030 下午 3:47 <br>
 * @author: William <br>
 * version: 1.0 <br>
 */
public class ThreadInterrupt {

    static AtomicBoolean aBoolean = new AtomicBoolean(false);

    public static void main(String[] args) {
      new Thread(() ->{
          while(true){
              if(aBoolean.get()){
                  System.out.println("=============线程被中断============");
                  break;
              }
              System.out.println("=============任务执行===============");
          }
      },"t1").start();

        try {
            TimeUnit.SECONDS.sleep(2);
        } catch (InterruptedException e) {
            e.printStackTrace();
        }
        
        new Thread(() ->{
          aBoolean.set(true);
          System.out.println("================设置状态为true=================");
      },"t2").start();
    }

}

三、通过interrup实现线程中断

interrupt() :设置线程状态为true

isInterrupt():查询当前线程阻塞状态

interrupted():查询当前线程阻塞状态，并将状态设置为false

备注：操作线程不能处于sleep,wait,join，不然会抛出异常

package com.llx.springsecurity.util;

import java.util.concurrent.TimeUnit;
import java.util.concurrent.atomic.AtomicBoolean;

/**
 * description: ThreadInterrupt <br>
 *
 * @date: 2022/7/30 0030 下午 3:47 <br>
 * @author: William <br>
 * version: 1.0 <br>
 */
public class ThreadInterrupt {

    public static void main(String[] args) {
        Thread t1 = new Thread(() -> {
            while (true) {
                if (Thread.currentThread().isInterrupted()) {
                    System.out.println("=============线程被中断============");
                    break;
                }
                System.out.println("=============任务执行===============");
            }
        }, "t1");
        t1.start();

        try {
            TimeUnit.SECONDS.sleep(2);
        } catch (InterruptedException e) {
            e.printStackTrace();
        }

        new Thread(() ->{
          t1.interrupt();
          System.out.println("================设置中断状态为true=================");
      },"t2").start();
    }

}