perf: 优化日志

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

@@ -40,10 +40,10 @@ public class IecServer implements ServerEventListener {
         }
     }
 
-    public void close() {
+    public void stop() {
         if (serverSap != null) {
             serverSap.stop();
-            log.info("已停止IEC61850服务端.");
+            log.info("已停止IEC61850服务端于" + port + "端口");
         }
         started = false;
     }

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

@@ -76,8 +76,7 @@ public class IecServerService {
     private void onlyStopServer(Integer fileId) {
         IecServer iecServer = StaticVariable.iecServerMap.get(fileId);
         if (iecServer != null) {
-            log.info("关闭IecServer服务, port=" + iecServer.port);
-            iecServer.close();
+            iecServer.stop();
             StaticVariable.iecServerMap.remove(fileId);
         }
     }