diff --git a/src/main/java/com/xydl/cac/serialport/SerialPortServer.java b/src/main/java/com/xydl/cac/serialport/SerialPortServer.java
index 1fbd079..795f1f2 100644
--- a/src/main/java/com/xydl/cac/serialport/SerialPortServer.java
+++ b/src/main/java/com/xydl/cac/serialport/SerialPortServer.java
@@ -7,8 +7,10 @@ import org.springframework.beans.factory.annotation.Value;
 import org.springframework.scheduling.annotation.Async;
 import org.springframework.stereotype.Service;
 
+import javax.annotation.PreDestroy;
 import java.util.ArrayList;
 import java.util.Arrays;
+import java.util.Iterator;
 import java.util.List;
 import java.util.regex.Pattern;
 
@@ -16,8 +18,6 @@ import java.util.regex.Pattern;
 @Slf4j
 public class SerialPortServer {
 
-    @Value("${cac.warnport.name}")
-    public String warnportname;
     @Value("${cac.warnport.intervaltime:60}")
     public Integer intervaltime;
     @Value("${cac.warnport.warntime:5}")
@@ -27,6 +27,9 @@ public class SerialPortServer {
     public long LastWarningTime;//最后一次硬接点告警时间
     public boolean started = false;
 
+    byte[] openbuffer = new byte[]{00, (byte) 0xf1, (byte) 0xff};//发送串口告警
+    byte[] stopbuffer = new byte[]{00, (byte) 0x01, (byte) 0xff};//关闭串口告警
+
     public void discoverSerialPort() {
         if (currentPort == null) {
             List<SerialPort> serialPortList = new ArrayList<>();
@@ -35,25 +38,25 @@ public class SerialPortServer {
                 serialPortList = Arrays.asList(commPorts);
                 for (SerialPort port : serialPortList) {
                     log.info("获取串口: " + port.getSystemPortName());
-                    Pattern pattern = Pattern.compile("ttyCH341.");
                     String systemPortName = port.getSystemPortName();
                     if (systemPortName != null) {
-                        if (pattern.matcher(systemPortName).matches()) {
+                        if (systemPortName.startsWith("ttyCH341")) {
                             currentPort = port;
                             log.info("获取到硬接点告警串口: " + port.getSystemPortName());
                         }
                     }
                 }
-            } else {
-                log.error("未获取到硬接点告警串口！");
             }
+        } else {
+            log.error("硬接点串口存在！");
         }
+
     }
 
     public void closeSerialPort() {
         if (currentPort != null) {
-            SerialPort port = currentPort;
-            port.closePort();
+            log.info("断开串口成功！");
+            currentPort.closePort();
         } else {
             log.error("断开串口失败，没有对应的硬接点告警串口！");
         }
@@ -66,8 +69,6 @@ public class SerialPortServer {
         if (!started) {
             started = true;
             if (openSerialPort()) {
-                byte[] openbuffer = new byte[]{00, (byte) 0xf1, (byte) 0xff};//发送串口告警
-                byte[] stopbuffer = new byte[]{00, (byte) 0x01, (byte) 0xff};//关闭串口告警
                 SerialPort port = currentPort;
                 if (port != null) {
                     long l = System.currentTimeMillis();
@@ -82,13 +83,11 @@ public class SerialPortServer {
                     LastWarningTime = l;
                     port.writeBytes(openbuffer, openbuffer.length);
                     int seconds = 0;
-                    while (StaticVariable.shutdown == 0 && seconds > warntime) {
+                    while (StaticVariable.shutdown == 0 && seconds < warntime) {
                         try {
                             Thread.sleep(1000);
                             seconds++;
                         } catch (Exception ignore) {
-                            port.writeBytes(stopbuffer, stopbuffer.length);
-                            started = false;
                         }
                     }
                     port.writeBytes(stopbuffer, stopbuffer.length);
@@ -138,4 +137,9 @@ public class SerialPortServer {
         }
     }
 
+    @PreDestroy
+    private void stop() {
+        closeSerialPort();
+    }
+
 }