public static JsonNode transferToJsonNode(Object obj) {
        return mapper.valueToTree(obj);
    }
@Test
    void testTransferToJsonNode() {
        JsonNode jsonNode1 = JacksonUtils.transferToJsonNode(Collections.singletonMap("key", "value"));
        assertEquals("value", jsonNode1.get("key").asText());
        
        JsonNode jsonNode2 = JacksonUtils.transferToJsonNode(new TestOfAtomicObject());
        assertEquals("0", jsonNode2.get("aLong").asText());
        assertEquals("1", jsonNode2.get("aInteger").asText());
        assertEquals("false", jsonNode2.get("aBoolean").asText());
    }