新增云协议设备实时数据功能

iot-access/access-api/src/main/java/com/njcn/access/utils/RedisSetUtil.java

@@ -0,0 +1,68 @@
+package com.njcn.access.utils;
+
+import com.njcn.redis.utils.RedisUtil;
+import lombok.extern.slf4j.Slf4j;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.stereotype.Component;
+
+import java.util.Collection;
+import java.util.HashSet;
+import java.util.Set;
+
+/**
+ * @author 徐扬
+ */
+@Component
+@Slf4j
+public class RedisSetUtil {
+
+    @Autowired
+    private RedisUtil redisUtil;
+
+    /**
+     * 向Redis Set中添加元素
+     */
+    public void addToSet(String key, String value, long expireSeconds) {
+        try {
+            Object existing = redisUtil.getObjectByKey(key);
+            Set<String> set = convertToSet(existing);
+            set.add(value);
+            redisUtil.saveByKeyWithExpire(key, set, expireSeconds);
+        } catch (Exception e) {
+            log.error("向Redis Set添加元素失败，key: {}", key, e);
+        }
+    }
+
+    /**
+     * 从Redis Set中移除元素
+     */
+    public void removeFromSet(String key, String value) {
+        try {
+            Object existing = redisUtil.getObjectByKey(key);
+            if (existing != null) {
+                Set<String> set = convertToSet(existing);
+                set.remove(value);
+                redisUtil.saveByKey(key, set);
+            }
+        } catch (Exception e) {
+            log.error("从Redis Set移除元素失败，key: {}", key, e);
+        }
+    }
+
+    /**
+     * 安全的对象到Set转换
+     */
+    public Set<String> convertToSet(Object obj) {
+        if (obj == null) {
+            return new HashSet<>();
+        }
+        if (obj instanceof Set) {
+            return new HashSet<>((Set<String>) obj);
+        }
+        if (obj instanceof Collection) {
+            return new HashSet<>((Collection<String>) obj);
+        }
+        log.warn("无法转换的对象类型: {}", obj.getClass().getName());
+        return new HashSet<>();
+    }
+}