diff --git a/Backend/src/main/java/com/wonder/bi/utils/NetUtils.java b/Backend/src/main/java/com/wonder/bi/utils/NetUtils.java
index 5f429ab..abb842b 100644
--- a/Backend/src/main/java/com/wonder/bi/utils/NetUtils.java
+++ b/Backend/src/main/java/com/wonder/bi/utils/NetUtils.java
@@ -19,13 +19,13 @@ public class NetUtils {
      */
     public static String getIpAddress(HttpServletRequest request) {
         String ip = request.getHeader("x-forwarded-for");
-        if (ip == null || ip.length() == 0 || "unknown".equalsIgnoreCase(ip)) {
+        if (ip == null || ip.isEmpty() || "unknown".equalsIgnoreCase(ip)) {
             ip = request.getHeader("Proxy-Client-IP");
         }
-        if (ip == null || ip.length() == 0 || "unknown".equalsIgnoreCase(ip)) {
+        if (ip == null || ip.isEmpty() || "unknown".equalsIgnoreCase(ip)) {
             ip = request.getHeader("WL-Proxy-Client-IP");
         }
-        if (ip == null || ip.length() == 0 || "unknown".equalsIgnoreCase(ip)) {
+        if (ip == null || ip.isEmpty() || "unknown".equalsIgnoreCase(ip)) {
             ip = request.getRemoteAddr();
             if (ip.equals("127.0.0.1")) {
                 // 根据网卡取本机配置的 IP