diff --git a/src/main/java/com/qyft/gd/device/client/TcpClient.java b/src/main/java/com/qyft/gd/device/client/TcpClient.java
index 078382f..92e8ce4 100644
--- a/src/main/java/com/qyft/gd/device/client/TcpClient.java
+++ b/src/main/java/com/qyft/gd/device/client/TcpClient.java
@@ -11,6 +11,7 @@ import io.netty.buffer.Unpooled;
 import io.netty.channel.*;
 import io.netty.channel.nio.NioEventLoopGroup;
 import io.netty.channel.socket.nio.NioSocketChannel;
+import io.netty.handler.codec.json.JsonObjectDecoder;
 import io.netty.util.CharsetUtil;
 import jakarta.annotation.PostConstruct;
 import lombok.RequiredArgsConstructor;
@@ -55,6 +56,7 @@ public class TcpClient {
                         .handler(new ChannelInitializer<>() {
                             @Override
                             protected void initChannel(Channel ch) {
+                                ch.pipeline().addLast(new JsonObjectDecoder());
                                 ch.pipeline().addLast(deviceMessageHandler);
                                 ch.pipeline().addLast(new TcpConnectionHandler());
                             }
@@ -93,8 +95,9 @@ public class TcpClient {
             try {
                 channel.writeAndFlush(byteBuf);
                 return true;
-            } finally {
-                byteBuf.release();  // 确保释放资源
+            } catch (Exception e) {
+                log.error("TCP发送请求失败: {}", request, e);
+                return false;
             }
         } else {
             log.error("TCP服务未连接，无法发送请求: {}", request);
@@ -122,8 +125,10 @@ public class TcpClient {
         CompletableFuture<DeviceFeedback> future = new CompletableFuture<>();
         deviceMessageHandler.responseMap.put(request.getId(), future);
         try {
-            log.info("发送TCP指令（同步） {}", JSONUtil.toJsonStr(request));
-            if (this.send(JSONUtil.toJsonStr(request))) {
+            request.getParams().put("class", "test");
+            String requestJsonStr = JSONUtil.toJsonStr(request);
+            log.info("发送TCP指令（同步） {}", requestJsonStr);
+            if (this.send(requestJsonStr)) {
                 return future.get(tcpConfig.getFeedbackTimeout(), TimeUnit.MILLISECONDS); // 等待 FEEDBACK 响应
             } else {
                 return null;