import org.springframework.context.annotation.Configuration;
import org.springframework.lang.NonNull;
import org.springframework.scheduling.annotation.EnableScheduling;
import org.springframework.scheduling.annotation.Scheduled;

import java.util.LinkedList;

@Configuration
@EnableScheduling
public class TaskScheduling {

    private final LinkedList<Task> list = new LinkedList<>();

    @Scheduled(fixedRate = 1000)
    public void taskScheduling() {
        long millis = System.currentTimeMillis();
        for (int i = 0; i < list.size(); i++) {
            Task task = list.get(i);
            if (task.getUptimeMillis() < millis) {
                //如果時間小于當前則是需要執(zhí)行的任務
                Task first = list.remove();
                i--;
                //如果是不可用就不執(zhí)行了
                if (first.isEnabled()) {
                    first.run();
                    first.setExits(false);
                    //如果是不再繼續(xù)執(zhí)行就不再添加
                    if (first.isLoop()) {
                        addTask(first, false);
                    }
                }
            }
        }
    }

    public synchronized void addTask(Task task, boolean isFirstRun) {
        //一開始執(zhí)行一次
        if (isFirstRun) {
            task.run();
        }
        task.setUptimeMillis(task.getPeriod() + System.currentTimeMillis());
        if (list.isEmpty()) {
            task.setExits(true);
            list.add(task);
            return;
        }
        for (int i = 0; i < list.size(); i++) {
            Task t = list.get(i);
            if (task.isExits()) return;
            if (task.getUptimeMillis() < t.getUptimeMillis()) {
                task.setExits(true);
                list.add(i, task);
            } else {
                task.setExits(true);
                list.add(task);
            }
        }
    }
    //移除只是改變狀態(tài)
    public void remove(@NonNull String id) {
        for (Task task : list) {
            if (id.equals(task.getId())) {
                task.setEnabled(false);
            }
        }
    }
    //不再繼續(xù)執(zhí)行
    public void noMore(@NonNull String id) {
        for (Task task : list) {
            if (id.equals(task.getId())) {
                task.setLoop(false);
            }
        }
    }
}

get和set方法省略了 需要加上

public class Task implements Runnable {
    private final String id;
    private Runnable runnable;
    private final long period;
    private volatile boolean loop = true;
    private volatile boolean enabled = true;
    private volatile boolean exits = false;
    private volatile long uptimeMillis;

    public Task(String id, Runnable runnable, long period) {
        this.id = id;
        this.runnable = runnable;
        this.period = period;
    }

    @Override
    public void run() {
        runnable.run();
    }
}