diff --git a/pom.xml b/pom.xml
index 199b61f..52fc765 100644
--- a/pom.xml
+++ b/pom.xml
@@ -14,7 +14,7 @@
 	<name>scalable-network-storage-site</name>
 	<description>scalable-network-storage-site</description>
 	<properties>
-		<java.version>17</java.version>
+		<java.version>21</java.version>
 	</properties>
 	<dependencies>
 		<dependency>
@@ -65,7 +65,7 @@
 		<dependency>
 			<groupId>cn.hutool</groupId>
 			<artifactId>hutool-all</artifactId>
-			<version>5.8.20</version>
+			<version>5.8.26</version>
 		</dependency>
 
 		<dependency>
diff --git a/src/main/java/com/lion/snss/service/CommunicateToMainService.java b/src/main/java/com/lion/snss/service/CommunicateToMainService.java
index 99ed963..5f50205 100644
--- a/src/main/java/com/lion/snss/service/CommunicateToMainService.java
+++ b/src/main/java/com/lion/snss/service/CommunicateToMainService.java
@@ -1205,7 +1205,7 @@ public class CommunicateToMainService {
                     if(storagePath.startsWith(file.getParentFile().getPath()))
                         fileNode.setPath("");
                      else
-                        fileNode.setPath(file.getParentFile().getPath().replace(storagePath, ""));
+                        fileNode.setPath(file.getParentFile().getPath().replace(storagePath, "") + "/");
                     response.success(objectMapper.valueToTree(fileNode));
                 }
                 case ShareFileQueryMessage.QUERY_SHARE_FILES -> {
diff --git a/src/main/java/com/lion/snss/util/IoUtil.java b/src/main/java/com/lion/snss/util/IoUtil.java
index 67ee092..fe16998 100644
--- a/src/main/java/com/lion/snss/util/IoUtil.java
+++ b/src/main/java/com/lion/snss/util/IoUtil.java
@@ -19,14 +19,15 @@ import oshi.hardware.HWDiskStore;
 import oshi.hardware.NetworkIF;
 import oshi.software.os.OperatingSystem;
 
-import java.io.BufferedOutputStream;
-import java.io.File;
-import java.io.IOException;
-import java.io.RandomAccessFile;
+import java.io.*;
+import java.net.URI;
+import java.net.URISyntaxException;
+import java.net.URL;
 import java.util.List;
 import java.util.concurrent.Executors;
 import java.util.concurrent.ScheduledExecutorService;
 import java.util.concurrent.TimeUnit;
+import java.util.regex.Pattern;
 
 @Data
 @Slf4j
@@ -50,12 +51,14 @@ public class IoUtil {
     static long write;
     static long writeNow;
 
+    static ScheduledExecutorService thread;
+
     static {
         init();
     }
 
     public static void init(){
-        ScheduledExecutorService thread = Executors.newScheduledThreadPool(1);
+        thread = Executors.newScheduledThreadPool(1);
         List<NetworkIF> networkIFs = OshiUtil.getNetworkIFs();
         cpuInfo = OshiUtil.getCpuInfo();
         globalMemory = OshiUtil.getMemory();
@@ -106,7 +109,16 @@ public class IoUtil {
 
     public static PairMessage generatePairMessage(){
         PairMessage pairMessage = new PairMessage();
-        pairMessage.setIp(networkIF.getIPv4addr()[0].split("/")[0]);
+        String ip = networkIF.getIPv4addr()[0].split("/")[0];
+        String privateIPPattern = "(^10\\.)|(^172\\.1[6-9]\\.)|(^172\\.2[0-9]\\.)|(^172\\.3[0-1]\\.)|(^192\\.168\\.)";
+        if(Pattern.compile(privateIPPattern).matcher(ip).find())
+            try {
+                ip = getPublicIP();
+            }catch (IOException | URISyntaxException e){
+                log.info("当前机器网卡为内网ip且无法获取公网ip，程序退出");
+                Runtime.getRuntime().exit(1);
+            }
+        pairMessage.setIp(ip);
         pairMessage.setHostname(NetUtil.getLocalHostName());
 
         OperatingSystem os = OshiUtil.getOs();
@@ -120,6 +132,25 @@ public class IoUtil {
         return pairMessage;
     }
 
+    public static String getPublicIP() throws IOException, URISyntaxException {
+        // 通过访问一个提供公网IP查询的服务，例如 httpbin.org
+        URL url = new URI("https://httpbin.org/ip").toURL();
+        BufferedReader reader = new BufferedReader(new InputStreamReader(url.openStream()));
+
+        // 读取返回的 JSON 数据
+        StringBuilder response = new StringBuilder();
+        String line;
+        while ((line = reader.readLine()) != null) {
+            response.append(line);
+        }
+
+        // 从返回的 JSON 数据中提取公网IP
+        String json = response.toString();
+        int startIndex = json.indexOf("\"origin\":") + 10;
+        int endIndex = json.indexOf("\"", startIndex + 1);
+        return json.substring(startIndex + 1, endIndex);
+    }
+
     public static StatusMessage generateStatusMessage(int id, String path){
         StatusMessage statusMessage = new StatusMessage();
         statusMessage.setId(id);
diff --git a/src/main/resources/snss.db b/src/main/resources/snss.db
index 6b9f44f..10915f3 100644
Binary files a/src/main/resources/snss.db and b/src/main/resources/snss.db differ