sn获取方式改变，ipv4临时路由添加异常处理完善

src/main/java/com/tongran/agent/client/utils/AgentUtil.java

@@ -298,7 +298,7 @@ public class AgentUtil {
             // 检查IP4信息
             if (gateway.equals("N/A")) continue;
 
-            // 添加临时路由
+            // 添加临时路由 过滤没有ipv4的接口
             boolean flag = addTempRoute(ipv4, name, gateway);
             if (!flag) continue;
 
@@ -557,11 +557,51 @@ public class AgentUtil {
 
     }
 
+    /**
+     * dmidecode -s system-serial-number命令获取SN序列号
+     * @return SN序列号，如果获取失败则返回空字符串
+     */
+    public static String getDeviceSN() {
+        BufferedReader reader = null;
+        try {
+            // 执行dmidecode命令获取系统序列号
+            Process process = Runtime.getRuntime().exec("dmidecode -s system-serial-number");
+
+            // 读取命令输出
+            reader = new BufferedReader(new InputStreamReader(process.getInputStream()));
+            String sn = reader.readLine();
+
+            // 等待命令执行完成
+            int exitCode = process.waitFor();
+
+            // 检查命令是否执行成功且输出不为空
+            if (exitCode == 0 && sn != null && !sn.trim().isEmpty()) {
+                return sn.trim();
+            } else {
+                AssertLog.error("Failed to get SN: Command exited with code " + exitCode);
+                return "";
+            }
+
+        }  catch (Exception e) {
+            // 处理其他未知异常
+            AssertLog.error("Unexpected error while getting device SN: " + e.getMessage());
+            return "";
+        } finally {
+            // 确保关闭资源
+            if (reader != null) {
+                try {
+                    reader.close();
+                } catch (IOException e) {
+                    AssertLog.error("Error closing reader: " + e.getMessage());
+                }
+            }
+        }
+    }
     /**
      * 获取 /etc/issue 文件的第二行内容
      * @return 第二行字符串，如果不存在则返回 null
      */
-    public static String getDeviceSN() {
+    public static String getDeviceSNBak() {
         Path issuePath = Paths.get("/etc/issue");
         if (!Files.exists(issuePath)) {
             System.err.println("文件不存在: /etc/issue");

src/main/java/com/tongran/agent/client/utils/NetworkUtil.java

@@ -1,19 +1,46 @@
 package com.tongran.agent.client.utils;
 
+import java.io.BufferedReader;
+import java.io.IOException;
+import java.io.InputStreamReader;
+import java.util.stream.Collectors;
+
 public class NetworkUtil {
     public static boolean addRoute(String ip, String prefix, String gateway, String dev) {
         try {
             ProcessBuilder pb = new ProcessBuilder("ip", "route", "add",
-                ip + "/" + prefix, "via", gateway, "dev", dev);
+                    ip + "/" + prefix, "via", gateway, "dev", dev);
             pb.redirectErrorStream(true);
             Process p = pb.start();
-            return p.waitFor() == 0;
+
+            String output = readProcessOutput(p);
+            int exitCode = p.waitFor();
+
+            if (exitCode == 0) {
+                return true;
+            } else {
+                // 检查是否是路由已存在的错误
+                if (output != null && (output.contains("File exists") || output.contains("RTNETLINK answers: File exists"))) {
+                    AssertLog.info("Route already exists");
+                    return true;
+                }
+                AssertLog.error("Failed to add route: " + output);
+                return false;
+            }
         } catch (Exception e) {
-            e.printStackTrace();
+            AssertLog.error("Exception while adding route: " + e.getMessage());
             return false;
         }
     }
 
+    private static String readProcessOutput(Process p) {
+        try (BufferedReader reader = new BufferedReader(new InputStreamReader(p.getInputStream()))) {
+            return reader.lines().collect(Collectors.joining("\n"));
+        } catch (IOException e) {
+            return "Error reading output: " + e.getMessage();
+        }
+    }
+
     public static boolean deleteRoute(String ip, String prefix, String gateway, String dev) {
         try {
             ProcessBuilder pb = new ProcessBuilder("ip", "route", "del",