Index: ssts-maintain/src/main/java/com/forgon/disinfectsystem/maintain/device/service/ChangLongDataManagerImpl.java
===================================================================
diff -u -r40620 -r40621
--- ssts-maintain/src/main/java/com/forgon/disinfectsystem/maintain/device/service/ChangLongDataManagerImpl.java	(.../ChangLongDataManagerImpl.java)	(revision 40620)
+++ ssts-maintain/src/main/java/com/forgon/disinfectsystem/maintain/device/service/ChangLongDataManagerImpl.java	(.../ChangLongDataManagerImpl.java)	(revision 40621)
@@ -275,7 +275,10 @@
 			}
 			throw new RuntimeException(e.getMessage());
 		}finally{
-			session.close();
+			ftpFileManager.closeFTP(ftp);
+			if(session != null){
+				session.close();
+			}
 		}
 	}