日志优化

src/main/java/cn/org/hentai/jtt1078/server/Jtt1078Handler.java

@@ -113,11 +113,15 @@ public class Jtt1078Handler extends SimpleChannelInboundHandler<Packet> {
             IdleStateEvent event = (IdleStateEvent) evt;
             if (event.state() == IdleState.READER_IDLE) {
                 String tag = SessionManager.get(ctx.channel(), "tag");
+
+                // 只有当该超时的连接已存在时, 打印超时日志, 防止重复打印
+                if (tag != null) {
                     logger.info(BusinessConstant.LOGGER_PREFIX + " : 连接超时 userEventTriggered : channelId = {} : tag = {}", ctx.channel() == null ? "null" : ctx.channel().id().asLongText(), tag);
                     release(ctx.channel());
                 }
             }
         }
+    }
 
     /**
      * 释放通道