refactor: 重构海康/大华登录和抓图（复用登录句柄、规范抓图文件规范、新增Digest认证抓图、优化并发抓图、增加SDK资源释放）

src/main/java/com/inspect/nvr/config/SdkCleanup.java

@@ -0,0 +1,42 @@
+package com.inspect.nvr.config;
+
+import com.inspect.nvr.daHuaCarme.jna.NetSDKLib;
+import com.inspect.nvr.hikVision.utils.jna.HCNetSDK;
+import com.inspect.nvr.service.DahuaLoginService;
+import com.inspect.nvr.service.HikLoginService;
+import lombok.extern.slf4j.Slf4j;
+import org.springframework.stereotype.Component;
+
+import javax.annotation.PreDestroy;
+import javax.annotation.Resource;
+
+/**
+ * 释放SDK资源
+ * 海康/大华：登录句柄和SDK资源
+ */
+@Slf4j
+@Component
+public class SdkCleanup {
+    @Resource
+    private HCNetSDK hcNetSDK;
+    @Resource
+    private HikLoginService hikLoginService;
+
+    @Resource
+    private NetSDKLib dhNetSDK;
+    @Resource
+    private DahuaLoginService dahuaLoginService;
+
+    @PreDestroy
+    public void cleanup() {
+        log.info("JVM shutting down, cleaning up SDK resources...");
+        // 注销所有登录句柄
+        hikLoginService.logoutAll();
+        dahuaLoginService.logoutAll();
+        log.info("已注销所有登录句柄");
+        // 释放SDK全局资源
+        hcNetSDK.NET_DVR_Cleanup();
+        dhNetSDK.CLIENT_Cleanup();
+        log.info("已释放所有SDK资源");
+     }
+}