用户超时登录处理DelayQueue

• POJO

import java.text.SimpleDateFormat;
import java.util.Date;
import java.util.concurrent.Delayed;
import java.util.concurrent.TimeUnit;

public class User implements Delayed {
    private SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
    private String userName;
    private String passWord;
    private Boolean enable;
    private Date loginTime;  //登录时间
    private Date timeOut;    //超时时间
    private String status = "LOGINNING";   //状态

    public String getStatus() {
        return status;
    }

    @Override
    public String toString() {
        return "User{" +
                "userName='" + userName + '\'' +
                ", enable=" + enable +
                ", loginTime=" + sdf.format(loginTime) +
                ", timeOut=" + sdf.format(timeOut) +
                ", status='" + status + '\'' +
                '}';
    }

    public void setStatus(String status) {
        this.status = status;
    }

    public User(String userName, String passWord, Boolean enable, Date loginTime, Date timeOut) {
        this.userName = userName;
        this.passWord = passWord;
        this.enable = enable;
        this.loginTime = loginTime;
        this.timeOut = timeOut;
    }

    public Boolean getEnable() {

        return enable;
    }

    public void setEnable(Boolean enable) {
        this.enable = enable;
    }

    public String getUserName() {
        return userName;
    }

    public void setUserName(String userName) {
        this.userName = userName;
    }

    public String getPassWord() {
        return passWord;
    }

    public void setPassWord(String passWord) {
        this.passWord = passWord;
    }

    @Override
    public long getDelay(TimeUnit unit) { //用来做排序和超时判断的
        long l = unit.convert(timeOut.getTime() - System.currentTimeMillis(), TimeUnit.MILLISECONDS);
        System.out.println(userName + "==>getDelay:" + l);
        return l;
    }

    public Date getLoginTime() {
        return loginTime;
    }

    public void setLoginTime(Date loginTime) {
        this.loginTime = loginTime;
    }

    public Date getTimeOut() {
        return timeOut;
    }

    public void setTimeOut(Date timeOut) {
        this.timeOut = timeOut;
    }

    @Override
    public int compareTo(Delayed o) {  //用来做排序的
        return this.getTimeOut().compareTo(((User) o).getTimeOut());
    }
}

• 测试类

import java.time.LocalDateTime;
import java.time.format.DateTimeFormatter;
import java.util.Date;
import java.util.concurrent.DelayQueue;

public class DelayQueueTest {
    //是否开启自动取消功能
    int isStarted = 1;
    //延迟队列，用来存放订单对象
    DelayQueue queue = new DelayQueue();

    public static void main(String[] args) {
        DelayQueueTest testDelayQueue = new DelayQueueTest();
        DateTimeFormatter formatter = DateTimeFormatter.ofPattern("yyyy-MM-dd HH:mm:ss");
        //新建一个线程，用来模拟定时取消订单job
        Thread t1 = new Thread(() -> {
            System.out.println("开启自动取消订单job,当前时间：" + LocalDateTime.now().format(formatter));
            while (testDelayQueue.isStarted == 1) {
                System.out.println("正在寻找订单");
                try {
                    User order = testDelayQueue.queue.take();
                    order.setStatus("CANCELED");

                    System.out.println("订单：" + order.getUserName() + "付款超时，自动取消，当前时间：" + LocalDateTime.now().format(formatter));
                    //取消订单
                } catch (InterruptedException e) {
                    e.printStackTrace();
                }
            }
        });
        t1.start();

        //新建一个线程，模拟提交订单
        Thread t2 = new Thread(() -> {
            //定义最早的订单的创建时间
            long beginTime = System.currentTimeMillis();
            //下面模拟6个订单，每个订单的创建时间依次延后3秒
            testDelayQueue.queue.add(new User("SO001", "A", true, new Date(beginTime), new Date(beginTime + 50000)));
            testDelayQueue.queue.add(new User("SO002", "A", true, new Date(beginTime), new Date(beginTime + 40000)));
            testDelayQueue.queue.add(new User("SO003", "A", true, new Date(beginTime), new Date(beginTime + 30000)));
            testDelayQueue.queue.add(new User("SO004", "A", true, new Date(beginTime), new Date(beginTime + 10000)));
            testDelayQueue.queue.add(new User("SO005", "C", true, new Date(beginTime), new Date(beginTime + 20000)));
            testDelayQueue.queue.add(new User("SO006", "C", true, new Date(beginTime), new Date(beginTime + 80000)));
            System.out.println(testDelayQueue.queue.toString());
        });
        t2.start();
    }

}