获得专利附图的guid

src/main/java/com/example/fms/service/SftpService.java

@@ -78,6 +78,7 @@ public class SftpService {
                 session.disconnect();
         }
         channel = session.openChannel("sftp");
+        channel.connect(10000);
         try {
             channel.connect();
         } catch (Exception e) {