定时任务

common/common-redis/src/main/java/com/hungraim/ltc/redis/RedisLock.java

+package com.hungraim.ltc.redis;
+
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.data.redis.core.RedisTemplate;
+import org.springframework.data.redis.core.StringRedisTemplate;
+import org.springframework.stereotype.Component;
+
+import javax.annotation.Resource;
+import java.util.concurrent.TimeUnit;
+
+/**
+ * @author zwl
+ * @ClassName RedisLock
+ * @description
+ * @date 2023/3/19 22:04
+ **/
+@Component
+public class RedisLock {
+
+    @Autowired
+    private RedisTemplate redisTemplate;
+
+    /**
+     * 查询
+     *
+     * @param key 键
+     * @return 值
+     */
+    public Object get(Object key) {
+        return redisTemplate.opsForValue().get(key);
+    }
+
+    /**
+     * 保存
+     *
+     * @param key    键
+     * @param value  值
+     * @param expire 失效时长
+     * @param unit   失效时长的单位
+     */
+    public void set(Object key, Object value, long expire, TimeUnit unit) {
+        if (expire > 0) {
+            redisTemplate.opsForValue().set(key, value, expire, unit);
+        }
+    }
+
+    /**
+     * 线程等待
+     *
+     * @param millis
+     */
+    private void sleep(long millis) {
+        try {
+            Thread.sleep(millis);
+        } catch (InterruptedException e) {
+            // do nothing
+        }
+    }
+
+    /**
+     * 尝试加锁
+     *
+     * @param key
+     * @param expireMilliseconds     锁超时时长，单位：毫秒
+     * @param retryTimes 重试次数，每秒重试 1 次
+     * @return
+     */
+    public boolean tryLock(Object key, long expireMilliseconds, long retryTimes) {
+        for (long i = 1; i <= retryTimes; i++) {
+            if (tryLock(key, expireMilliseconds)) {
+                return true;
+            } else if (i != retryTimes) {
+                sleep(1000);
+            }
+        }
+        return false;
+    }
+
+    /**
+     * 尝试加锁
+     *
+     * @param key
+     * @param expireMilliseconds 锁超时时长，单位：毫秒
+     * @return
+     */
+    public boolean tryLock(Object key, long expireMilliseconds) {
+        String expireAt = String.valueOf(System.currentTimeMillis() + expireMilliseconds + 1);
+        Boolean acquire = redisTemplate.opsForValue().setIfAbsent(key, expireAt, expireMilliseconds, TimeUnit.MILLISECONDS);
+        if (acquire != null) {
+            return acquire;
+        } else {
+            return false;
+        }
+    }
+
+    /**
+     * 删除锁
+     *
+     * @param key
+     * @return
+     */
+    public boolean delLock(Object key) {
+        return redisTemplate.delete(key);
+    }
+
+    /**
+     * 删除缓存
+     *
+     * @param key
+     * @return
+     */
+    public boolean delete(Object key) {
+        return redisTemplate.delete(key);
+    }
+}

governance/src/main/java/com/hungraim/ltc/governance/controller/SrvTaskScheduledController.java

 package com.hungraim.ltc.governance.controller;
 
 import com.hungraim.ltc.governance.service.SrvTaskService;
+import com.hungraim.ltc.redis.RedisLock;
 import com.hungraim.ltc.util.DateUtils;
 import lombok.extern.slf4j.Slf4j;
 import org.springframework.beans.factory.annotation.Autowired;
@@ -22,17 +23,25 @@ public class SrvTaskScheduledController {
     @Autowired
     private SrvTaskService srvTaskService;
 
-    @Scheduled(cron = "0 50 20 * * ?")
-    public void timeAllocationSrvTask() {
-        log.info("timeAllocationSrvTask========start");
-        String nextDay = DateUtils.getNextDay();
-        srvTaskService.timeAllocationSrvTask(nextDay);
-        log.info("timeAllocationSrvTask========end:{}");
-    }
+    @Autowired
+    private RedisLock redisLock;
+
+
 
+    public static final String JOB_KEY = "redis.job.task:srvTask";
+
+
+
+    @Scheduled(cron = "0 35 23 * * ?")
+    public void timeAllocationSrvTask() {
+        boolean flag = redisLock.tryLock(JOB_KEY, 1000*30);
+        if(flag){
+            String nextDay = DateUtils.getNextDay();
+            log.info("timeAllocationSrvTask========start:{}",nextDay);
+            srvTaskService.timeAllocationSrvTask(nextDay);
+            log.info("timeAllocationSrvTask========end:{}");
+        }
 
-    @Scheduled(cron = "*/5 * * * * ?")
-    public void test111() {
-       log.info("test111===============================================");
     }
+
 }