add test

hutool-json/src/test/java/cn/hutool/v7/json/issues/Pr1431Test.java

@@ -0,0 +1,48 @@
+/*
+ * Copyright (c) 2026 Hutool Team.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package cn.hutool.v7.json.issues;
+
+import cn.hutool.v7.json.JSONConfig;
+import cn.hutool.v7.json.JSONObject;
+import cn.hutool.v7.json.JSONUtil;
+import lombok.Data;
+import org.junit.jupiter.api.Test;
+
+import static org.junit.jupiter.api.Assertions.assertEquals;
+import static org.junit.jupiter.api.Assertions.assertTrue;
+
+public class Pr1431Test {
+	@Test
+	void filterTest() {
+		final UserC user = new UserC();
+		user.setId(1);
+		user.setName("张三");
+		user.setProp("123456");
+
+		final JSONObject entries = JSONUtil.parseObj(user, JSONConfig.of(), entry -> !entry.getKey().equals("prop"));
+		assertEquals(2, entries.size());
+		assertTrue(entries.containsKey("id"));
+		assertTrue(entries.containsKey("name"));
+	}
+
+	@Data
+	static class UserC {
+		private int id;
+		private String name;
+		private String prop;
+	}
+}