1、修改TCP推送的bug

sec-beidou-fwd/src/main/java/com/imdroid/beidou_fwd/service/TCPClient.java

@@ -34,7 +34,7 @@ public class TCPClient {
     public void init(String dest_addr, int dest_port) {
         host = dest_addr;
         port = dest_port;
-        sendBuffer = Unpooled.buffer();
+
         //客户端需要一个事件循环组
         group = new NioEventLoopGroup();
         //创建客户端启动对象
@@ -83,6 +83,7 @@ public class TCPClient {
     }
 
     public void writeAndFlush(String json) {
+        sendBuffer = Unpooled.buffer();
         sendBuffer.writeBytes(json.getBytes(StandardCharsets.UTF_8));
         if(channel.isActive()) flush();
         else connect();
@@ -97,7 +98,7 @@ public class TCPClient {
             channel.writeAndFlush(sendBuffer).addListener(future -> {
                 if (future.isSuccess()) {
                     logger.info("send to xfz server succeed.");
-                    sendBuffer.clear();
+                    sendBuffer.release();
                 } else {
                     logger.info("send to xfz server failed.");
                 }