....

src/main/java/cn/com/qmth/examcloud/web/actuator/ApiStatusEndpoint.java

@@ -65,14 +65,19 @@ public class ApiStatusEndpoint {
 			public int compare(ApiStatusInfo o1, ApiStatusInfo o2) {
 
 				try {
-					Field field = o1.getClass().getField(order);
+					Field field = o1.getClass().getDeclaredField(order);
+					field.setAccessible(true);
 					Object value1 = field.get(o1);
 					Object value2 = field.get(o2);
 
-					if (value1 instanceof Long) {
-						return (int) (((Long) value1) - ((Long) value2));
+					if (null == value1) {
+						return -1;
+					} else if (null == value2) {
+						return 1;
+					} else if (value1 instanceof Long) {
+						return (int) (((Long) value2) - ((Long) value1));
 					} else if (value1 instanceof Double) {
-						return (int) (((Double) value1) - ((Double) value2));
+						return (int) (((Double) value2) - ((Double) value1));
 					} else if (value1 instanceof String) {
 						return ((String) value1).compareToIgnoreCase((String) value2);
 					} else {