优化agent客户端网关探测

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

@@ -608,7 +608,7 @@ public class AgentUtil {
     /**
      * 获取默认网关（调用 shell 命令）
      */
-    private static String getGatewayAddress() {
+    public static String getGatewayAddress() {
         try {
             Process process = Runtime.getRuntime().exec("ip route");
             java.util.Scanner scanner = new java.util.Scanner(process.getInputStream());
@@ -625,6 +625,36 @@ public class AgentUtil {
         }
         return "N/A";
     }
+    /**
+     * 获取默认网关（调用 shell 命令）
+     */
+    public static String getGatewayAddress(String interfaceName) {
+        try {
+            Process process = Runtime.getRuntime().exec("ip route");
+            java.util.Scanner scanner = new java.util.Scanner(process.getInputStream());
+            while (scanner.hasNextLine()) {
+                String line = scanner.nextLine();
+                if (line.startsWith("default")) {
+                    String[] parts = line.split(" ");
+                    if (parts.length >= 5 && "via".equals(parts[1])) {
+                        // 基本格式检查通过
+                        for (int i = 0; i < parts.length; i++) {
+                            if ("dev".equals(parts[i]) && i + 1 < parts.length) {
+                                if (interfaceName.equals(parts[i + 1])) {
+                                    return parts[2];  // gateway地址
+                                }
+                                break;
+                            }
+                        }
+                    }
+                }
+            }
+            scanner.close();
+        } catch (Exception e) {
+            e.printStackTrace();
+        }
+        return null;
+    }
     public static String getGateway(String interfaceName, String target) {
         try {
             Process process = Runtime.getRuntime().exec(

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

@@ -93,12 +93,17 @@ public class NetworkInterfaceUtil {
 
             // 获取网关
             String gateway = AgentUtil.getGateway(name, "www.baidu.com");
-            AssertLog.info("  网关: {}", gateway);
-
-            if ("N/A".equals(gateway)) {
-                AssertLog.info("  跳过网卡 {}: 无法获取网关", name);
-                continue;
+            if(gateway == null) {
+                // 降级
+                gateway = AgentUtil.getGatewayAddress(name);
+                AssertLog.info("traceroute探测失败，改为ip route方式获取");
             }
+            AssertLog.info("获取到网关为: {}", gateway);
+
+//            if ("N/A".equals(gateway)) {
+//                AssertLog.info("  跳过网卡 {}: 无法获取网关", name);
+//                continue;
+//            }
             boolean flag = false;
             if(!"N/A".equals(ipv4) && gateway != null){
                 flag = true;