优化交换机心跳监测功能

ruoyi-rocketmq/src/main/java/com/ruoyi/rocketmq/snmp/scheduler/MultiSwitchCollectionScheduler.java

@@ -265,10 +265,6 @@ public class MultiSwitchCollectionScheduler {
             log.error("SNMP采集器未初始化，无法启动交换机 {} 的心跳检测任务", switchIp);
             return null;
         }
-        // 创建Cron表达式：每30s执行一次
-        String cronExpression = "30 * * * * ?";
-
-
         Runnable heartbeatTask = () -> {
             try {
                 // 获取当前时间作为检测时间戳
@@ -319,8 +315,11 @@ public class MultiSwitchCollectionScheduler {
             }
         };
 
-        CronTrigger trigger = new CronTrigger(cronExpression);
-        ScheduledFuture<?> future = taskScheduler.schedule(heartbeatTask, trigger);
+        long intervalSeconds = 30L;
+        Duration initialDelay = Duration.ofSeconds(10);
+        Duration interval = Duration.ofSeconds(intervalSeconds);
+        ScheduledFuture<?> future = taskScheduler.scheduleWithFixedDelay(
+                heartbeatTask, Instant.now().plus(initialDelay), interval);
 
         log.info("交换机 {} 心跳检测任务启动，检测间隔: 30秒", switchIp);
         return future;