diff --git a/src/main/java/com/inspect/tcpserver/tcp/MyDecoder.java b/src/main/java/com/inspect/tcpserver/tcp/MyDecoder.java
index 5b90738..b6146cd 100644
--- a/src/main/java/com/inspect/tcpserver/tcp/MyDecoder.java
+++ b/src/main/java/com/inspect/tcpserver/tcp/MyDecoder.java
@@ -58,7 +58,9 @@ public class MyDecoder extends ByteToMessageDecoder {
                 }
                 byte[] payload = new byte[xmlLength];
                 in.readBytes(payload);
-                in.readShortLE();
+                if(in.readableBytes() > 0) {
+                    in.readShortLE();
+                }
                 BinaryModel binaryModel = new BinaryModel();
                 binaryModel.receiveIndex = receiveIndex;
                 binaryModel.sendIndex = sendIndex;
@@ -68,7 +70,7 @@ public class MyDecoder extends ByteToMessageDecoder {
                 binaryModel.uuid = uuid;
                 out.add(binaryModel);
             } catch (Exception e) {
-                e.printStackTrace();
+                log.error("error" , e);
             }
         }
     }
diff --git a/src/main/java/com/inspect/tcpserver/tcp/NettyServer.java b/src/main/java/com/inspect/tcpserver/tcp/NettyServer.java
index f6910fd..80e588d 100644
--- a/src/main/java/com/inspect/tcpserver/tcp/NettyServer.java
+++ b/src/main/java/com/inspect/tcpserver/tcp/NettyServer.java
@@ -141,6 +141,9 @@ public class NettyServer {
 
     //发送消息
     public void flushMsgToDevice(String uuid, String clientKey, boolean request, String xml) {
+        logger.info("clientKey: " + clientKey + ", xml: " + xml);
+        logger.info("tcpClientMap.size(): " + tcpClientMap.size() + ", tcpClientMap: " + tcpClientMap);
+
         if (tcpClientMap.containsKey(clientKey) && !StringUtil.isNullOrEmpty(xml)) {
             ByteBuf byteBuf = Unpooled.copiedBuffer(xml, CharsetUtil.UTF_8);
             int length = byteBuf.readableBytes();