update 优化 OssFactory 锁逻辑

ruoyi-common/ruoyi-common-oss/src/main/java/org/dromara/common/oss/factory/OssFactory.java

@@ -24,6 +24,7 @@ import java.util.concurrent.locks.ReentrantLock;
 public class OssFactory {
 
     private static final Map<String, OssClient> CLIENT_CACHE = new ConcurrentHashMap<>();
+    private static final ReentrantLock LOCK = new ReentrantLock();
 
     /**
      * 获取默认实例
@@ -51,14 +52,16 @@ public class OssFactory {
         OssClient client = CLIENT_CACHE.get(key);
         // 客户端不存在或配置不相同则重新构建
         if (client == null || !client.checkPropertiesSame(properties)) {
-            ReentrantLock lock = new ReentrantLock();
-            lock.lock();
+            LOCK.lock();
             try {
-                CLIENT_CACHE.put(key, new OssClient(configKey, properties));
-                log.info("创建OSS实例 key => {}", configKey);
-                return CLIENT_CACHE.get(key);
+                client = CLIENT_CACHE.get(key);
+                if (client == null || !client.checkPropertiesSame(properties)) {
+                    CLIENT_CACHE.put(key, new OssClient(configKey, properties));
+                    log.info("创建OSS实例 key => {}", configKey);
+                    return CLIENT_CACHE.get(key);
+                }
             } finally {
-                lock.unlock();
+                LOCK.unlock();
             }
         }
         return client;