改进代码的结构/格式

@@ -39,7 +39,6 @@ public class HeartBeatServer {
     @Value("${netty.server.port}")
     private int nettyPort;
 
-    private NioServerSocketChannel channel;
 
     /**
      * 启动 Netty
@@ -62,7 +61,6 @@ public class HeartBeatServer {
         if (future.isSuccess()) {
             LOGGER.info("启动 Netty 成功");
         }
-        channel = (NioServerSocketChannel) future.channel();
     }
 
 

@@ -30,8 +30,6 @@ public class NettySocketHolder {
     }
 
     public static void remove(NioSocketChannel nioSocketChannel) {
-        MAP.entrySet().stream().filter(entry -> entry.getValue() == nioSocketChannel).forEach(entry -> {
-            MAP.remove(entry.getKey());
-        });
+        MAP.entrySet().stream().filter(entry -> entry.getValue() == nioSocketChannel).forEach(entry -> MAP.remove(entry.getKey()));
     }
 }