first commit

src/main/java/com/budwk/app/task/services/TaskPlatformService.java

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+package com.budwk.app.task.services;
+
+import java.util.List;
+
+/**
+ * Created by wizzer on 2018/3/19.
+ */
+public interface TaskPlatformService {
+    /**
+     * 判断任务是否存在
+     *
+     * @param jobName
+     * @param jobGroup
+     * @return
+     */
+    boolean isExist(String jobName, String jobGroup);
+
+    /**
+     * 添加新任务
+     *
+     * @param jobName
+     * @param jobGroup
+     * @param className
+     * @param cron
+     * @param comment
+     * @param dataMap
+     */
+    void add(String jobName, String jobGroup, String className, String cron, String comment, String dataMap);
+
+    /**
+     * 删除任务
+     *
+     * @param jobName
+     * @param jobGroup
+     * @return
+     */
+    boolean delete(String jobName, String jobGroup);
+
+    /**
+     * 清除所有任务
+     */
+    void clear();
+
+    /**
+     * 获取cron表达式最近执行时间
+     *
+     * @param cronExpression
+     * @return
+     */
+    List<String> getCronExeTimes(String cronExpression) throws Exception;
+
+    List<String> getCronExeTimesPlus(String cronExpression) throws Exception;
+}

src/main/java/com/budwk/app/task/services/impl/TaskPlatformServiceImpl.java

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+package com.budwk.app.task.services.impl;
+
+import com.budwk.app.task.services.TaskPlatformService;
+import org.nutz.integration.quartz.QuartzJob;
+import org.nutz.integration.quartz.QuartzManager;
+import org.nutz.ioc.loader.annotation.Inject;
+import org.nutz.ioc.loader.annotation.IocBean;
+import org.quartz.CronExpression;
+import org.quartz.JobKey;
+import org.quartz.TriggerUtils;
+import org.quartz.impl.triggers.CronTriggerImpl;
+
+import java.text.SimpleDateFormat;
+import java.util.ArrayList;
+import java.util.Calendar;
+import java.util.Date;
+import java.util.List;
+
+/**
+ * Created by wizzer on 2018/3/19.
+ */
+@IocBean
+public class TaskPlatformServiceImpl implements TaskPlatformService {
+    @Inject
+    private QuartzManager quartzManager;
+
+    /**
+     * 判断任务是否存在
+     *
+     * @param jobName
+     * @param jobGroup
+     * @return
+     */
+    public boolean isExist(String jobName, String jobGroup) {
+        return quartzManager.exist(new JobKey(jobName, jobGroup));
+    }
+
+    /**
+     * 添加新任务
+     *
+     * @param jobName
+     * @param jobGroup
+     * @param className
+     * @param cron
+     * @param comment
+     * @param dataMap
+     */
+    public void add(String jobName, String jobGroup, String className, String cron, String comment, String dataMap) {
+        QuartzJob qj = new QuartzJob();
+        qj.setJobName(jobName);
+        qj.setJobGroup(jobGroup);
+        qj.setClassName(className);
+        qj.setCron(cron);
+        qj.setComment(comment);
+        qj.setDataMap(dataMap);
+        quartzManager.add(qj);
+    }
+
+    /**
+     * 删除任务
+     *
+     * @param jobName
+     * @param jobGroup
+     * @return
+     */
+    public boolean delete(String jobName, String jobGroup) {
+        QuartzJob qj = new QuartzJob();
+        qj.setJobName(jobName);
+        qj.setJobGroup(jobGroup);
+        return quartzManager.delete(qj);
+    }
+
+    /**
+     * 清除任务
+     */
+    public void clear() {
+        quartzManager.clear();
+    }
+
+    /**
+     * 获取cron表达式最近执行时间
+     *
+     * @param cronExpression
+     * @return
+     */
+    public List<String> getCronExeTimes(String cronExpression) throws Exception {
+        List<String> list = new ArrayList<>();
+        CronTriggerImpl cronTriggerImpl = new CronTriggerImpl();
+        cronTriggerImpl.setCronExpression(cronExpression);
+        Calendar calendar = Calendar.getInstance();
+        Date now = calendar.getTime();
+        calendar.add(2, 1);
+        List<Date> dates = TriggerUtils.computeFireTimesBetween(cronTriggerImpl, null, now, calendar.getTime());
+        SimpleDateFormat dateFormat = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
+        for (int i = 0; i < dates.size() && i <= 4; ++i) {
+            list.add(dateFormat.format((Date) dates.get(i)));
+        }
+        return list;
+    }
+
+
+    @Override
+    public List<String> getCronExeTimesPlus(String cronExpression) throws Exception {
+        // 创建一个列表来存储执行时间
+        List<String> executionTimes = new ArrayList<>();
+        // 创建 CronTriggerImpl 对象，并设置 cron 表达式
+        CronTriggerImpl cronTrigger = new CronTriggerImpl();
+        cronTrigger.setCronExpression(new CronExpression(cronExpression));
+        // 计算未来的执行时间
+        List<Date> nextExecutionTimes = TriggerUtils.computeFireTimes(cronTrigger, null, 5);
+        // 格式化日期并添加到执行时间列表中
+        SimpleDateFormat dateFormat = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
+        for (Date date : nextExecutionTimes) {
+            executionTimes.add(dateFormat.format(date));
+        }
+        return executionTimes;
+    }
+}