修改：工程结构变更为 标准 maven 工程

src/main/java/tccn/timer/scheduled/ScheduledCycle.java

@@ -0,0 +1,79 @@
+package tccn.timer.scheduled;
+
+import java.time.LocalDateTime;
+import java.time.temporal.ChronoUnit;
+import java.time.temporal.TemporalUnit;
+
+/**
+ * @author: liangxianyou at 2018/8/5 18:05.
+ */
+public class ScheduledCycle implements Scheduled {
+
+    private LocalDateTime theTime;
+    private long period;
+    private TemporalUnit unit = ChronoUnit.MILLIS;
+
+    private ScheduledCycle() {
+    }
+
+    public static Scheduled of(String periodCfg) {
+        TemporalUnit unit = ChronoUnit.MILLIS;
+        String endchar = "";
+        long period;
+
+        if (periodCfg.matches("^\\d+[y,M,d,H,m,s]$")) {
+            endchar = periodCfg.substring(periodCfg.length() - 1);
+            period = Long.parseLong(periodCfg.substring(0, periodCfg.length() - 1));
+        } else if (periodCfg.matches("^\\d+$")) {
+            period = Long.parseLong(periodCfg);
+            if (period <= 0) {
+                throw new IllegalArgumentException(String.format("ScheduledCycle period config error: [%s]", periodCfg));
+            }
+        } else {
+            throw new IllegalArgumentException(String.format("ScheduledCycle period config error: [%s]", periodCfg));
+        }
+
+        if ("y".equals(endchar)) unit = ChronoUnit.YEARS;
+        else if ("M".equals(endchar)) unit = ChronoUnit.MONTHS;
+        else if ("d".equals(endchar)) unit = ChronoUnit.DAYS;
+        else if ("H".equals(endchar)) unit = ChronoUnit.HOURS;
+        else if ("m".equals(endchar)) unit = ChronoUnit.MINUTES;
+        else if ("s".equals(endchar)) unit = ChronoUnit.SECONDS;
+
+        return of(period, unit);
+    }
+
+    public static Scheduled of(long period) {
+        return of(period, ChronoUnit.MILLIS);
+    }
+
+    public static Scheduled of(long period, TemporalUnit unit) {
+        LocalDateTime theTime = LocalDateTime.now().plus(period, unit);
+        return of(theTime, period, unit);
+    }
+
+    public static Scheduled of(LocalDateTime startTime, long period) {
+        return of(startTime, period, ChronoUnit.MILLIS);
+    }
+
+    public static Scheduled of(LocalDateTime startTime, long period, TemporalUnit unit) {
+        ScheduledCycle scheduled = new ScheduledCycle();
+        scheduled.theTime = startTime;
+        scheduled.period = period;
+        scheduled.unit = unit;
+        return scheduled;
+    }
+
+    @Override
+    public LocalDateTime nextTime() {
+        if (theTime.isAfter(LocalDateTime.now())) {
+            return theTime;
+        }
+        return theTime = theTime.plus(period, unit);
+    }
+
+    @Override
+    public LocalDateTime theTime() {
+        return theTime;
+    }
+}