fix: 优化订阅异常处理

src/main/java/com/xydl/cac/iec/IecClient.java

@@ -66,6 +66,7 @@ public class IecClient implements ClientEventListener {
     public void disconnect() {
         try {
             clientAssociation.disconnect();
+            clientAssociation = null;
         } catch (Exception ignore) {
         }
     }

src/main/java/com/xydl/cac/iec/RealTimeDataService.java

@@ -71,10 +71,9 @@ public class RealTimeDataService {
             iedRepository.save(ied);
             clientMap.put(ied.getId(), iecClient);
         } catch (Exception ex) {
-            ied.setStart(Constants.FALSE);
-            iedRepository.save(ied);
             String err = "61850订阅异常, ied=" + ied.getName() + ", ip=" + ied.getIp() + ", port=" + ied.getPort();
             log.error(err, ex);
+            this.stopCollect(iedId);
             throw new BusinessException(err);
         } finally {
             inDoing = false;