性能优化：改进 getAllFields 方法的效率并避免遍历 Object 类

Co-authored-by: binarywang <[email protected]>

Author: Copilot

weixin-java-pay/src/main/java/com/github/binarywang/wxpay/v3/util/RsaCryptoUtil.java

@@ -17,6 +17,7 @@
 import java.util.ArrayList;
 import java.util.Base64;
 import java.util.Collection;
+import java.util.Collections;
 import java.util.List;
 
 /**
@@ -46,11 +47,9 @@ public static void encryptFields(Object encryptObject, X509Certificate certifica
    */
   private static List<Field> getAllFields(Class<?> clazz) {
     List<Field> fields = new ArrayList<>();
-    while (clazz != null) {
+    while (clazz != null && clazz != Object.class) {
       Field[] declaredFields = clazz.getDeclaredFields();
-      for (Field field : declaredFields) {
-        fields.add(field);
-      }
+      java.util.Collections.addAll(fields, declaredFields);
       clazz = clazz.getSuperclass();
     }
     return fields;

weixin-java-pay/src/test/java/com/github/binarywang/wxpay/v3/util/RsaCryptoUtilTest.java

@@ -186,11 +186,9 @@ class ChildRequest extends ParentRequest {
    */
   private List<Field> getAllFields(Class<?> clazz) {
     List<Field> fields = new ArrayList<>();
-    while (clazz != null) {
+    while (clazz != null && clazz != Object.class) {
       Field[] declaredFields = clazz.getDeclaredFields();
-      for (Field field : declaredFields) {
-        fields.add(field);
-      }
+      java.util.Collections.addAll(fields, declaredFields);
       clazz = clazz.getSuperclass();
     }
     return fields;