修改串口读取方法

@@ -10,6 +10,8 @@ import com.zhonglai.luhui.smart.feeder.dto.commd.FeederCommdDto;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 
+import java.io.IOException;
+import java.io.InputStream;
 import java.util.concurrent.BlockingQueue;
 import java.util.concurrent.LinkedBlockingQueue;
 import java.util.concurrent.TimeUnit;
@@ -69,16 +71,31 @@ public class SerialPortService implements com.fazecast.jSerialComm.SerialPortDat
     @Override
     public void serialEvent(SerialPortEvent event) {
         if (event.getEventType() == SerialPort.LISTENING_EVENT_DATA_AVAILABLE) {
-            try {
-                // 读取串口数据
-                byte[] newData = new byte[serialPort.bytesAvailable()];
-                int numRead = serialPort.readBytes(newData, newData.length);
+//            try {
+//                // 读取串口数据
+//                byte[] newData = new byte[serialPort.bytesAvailable()];
+//                int numRead = serialPort.readBytes(newData, newData.length);
+//
+//                logger.info("串口返回{}字节数据：{}",numRead, ByteUtil.toHexString(newData));
+//                FeederCommdDto commdDto = new FeederCommdDto(newData);
+//                dataQueue.offer(commdDto); // 将数据添加到队列中// 处理串口返回的数据
+//            } catch (Exception e) {
+//                logger.error("读取串口数据时出错: " , e);
+//            }
+            String data = "";
+            if (event.getEventType() != SerialPort.LISTENING_EVENT_DATA_AVAILABLE){
+                return;//判断事件的类型
+            }
+            SerialPort port = event.getSerialPort();
 
-                logger.info("串口返回{}字节数据：{}",numRead, ByteUtil.toHexString(newData));
-                FeederCommdDto commdDto = new FeederCommdDto(newData);
+            try {
+                Thread.sleep(500);
+                byte[] bytes = readFromPort(port);
+                logger.info("串口返回数据："+ByteUtil.toHexString(bytes));
+                FeederCommdDto commdDto = new FeederCommdDto(bytes);
                 dataQueue.offer(commdDto); // 将数据添加到队列中// 处理串口返回的数据
             } catch (Exception e) {
-                logger.error("读取串口数据时出错: " , e);
+                logger.error("返回数据处理异常",e);
             }
         }
     }
@@ -159,4 +176,38 @@ public class SerialPortService implements com.fazecast.jSerialComm.SerialPortDat
         byte[] bytes = ByteUtil.hexStringToByte(hexStr.replace(" ","").trim().toUpperCase());
         return sendByte(bytes);
     }
+
+    private static byte[] readFromPort(SerialPort serialPort) throws Exception {
+
+        InputStream in = null;
+        byte[] bytes = null;
+
+        try {
+            if (serialPort != null) {
+                in = serialPort.getInputStream();
+            } else {
+                return null;
+            }
+            int bufflenth = in.available(); // 获取buffer里的数据长度
+            while (bufflenth > 0) {
+                bytes = new byte[bufflenth]; // 初始化byte数组为buffer中数据的长度
+                in.read(bytes);
+                bufflenth = in.available();
+            }
+        } catch (Exception e) {
+            throw e;
+        } finally {
+            try {
+                if (in != null) {
+                    in.close();
+                }
+            } catch (IOException e) {
+                throw e;
+            }
+
+        }
+
+        return bytes;
+
+    }
 }