修复bug

src/main/java/cn/qg/holmes/service/k8s/K8sService.java

@@ -324,8 +324,10 @@ public class K8sService {
     public Map<String, Map<String, Object>> assign(String serviceName, Map<String, Map<String, Object>> podServiceMap, Map<String, Object> otherMap) {
         Map<String, Object> podService = podServiceMap.get(serviceName);
         for (Map.Entry<String, Object> entry: otherMap.entrySet()) {
+            if (podService != null) {
                 podService.put(entry.getKey(), entry.getValue());
             }
+        }
         podServiceMap.put(serviceName, podService);
         return podServiceMap;
     }
@@ -405,10 +407,10 @@ public class K8sService {
 
     public Map<String, Object> formatIngressInfo(Ingress ingress) {
         Map<String, Object> ingressMap = new HashMap<>();
-        if (ingress.getSpec().getRules().size() > 0) {
+        if (ingress.getSpec().getRules() != null && ingress.getSpec().getRules().size() > 0) {
             ingressMap.put("host", ingress.getSpec().getRules().get(0).getHost());
         } else {
-            ingressMap.put("host", null);
+            ingressMap.put("host", "");
         }
         return ingressMap;
     }