[BUG] [SupportSmartMatch] 使用JSON.to或者JSONObject.getObject JSONObject.getObject时；全小写的字段名不生效

[BohrX]

问题描述

使用JSON.to或者JSONObject.getObject JSONObject.getObject时；全小写的字段名不生效
涉及api:
com.alibaba.fastjson2.JSONObject#getObject(java.lang.String, java.lang.Class, com.alibaba.fastjson2.JSONReader.Feature...)
com.alibaba.fastjson2.JSON#to

环境信息

• OS信息： Win11
• JDK信息： 1.8
• 版本信息：Fastjson2 2.0.53

重现步骤

import java.util.Map;

import org.assertj.core.api.Assertions;
import org.junit.Before;
import org.junit.Test;

import com.alibaba.fastjson2.JSON;
import com.alibaba.fastjson2.JSONObject;
import com.alibaba.fastjson2.JSONReader;

import lombok.Data;

public class ObjToBeanFeatureTest {

    @Before
    public void setUp() throws Exception {
        JSON.config(JSONReader.Feature.SupportSmartMatch, false);
    }


    @Test
    public void allLowerCaseFieldObjToBean() {
        // 全小写 有问题
        String text = "{\"appid\":\"com.xxx.xxx\"}";

        // 全局设置智能匹配， 反序列化没问题
        JSON.config(JSONReader.Feature.SupportSmartMatch, true);
        Bean bean2 = JSON.parseObject(text, Bean.class);
        Assertions.assertThat(bean2.appID).isEqualTo("com.xxx.xxx");

        Map<String, Object> jsonObject = JSON.parseObject(text);
        Assertions.assertThat(jsonObject.get("appid")).isEqualTo("com.xxx.xxx");
        JSONObject obj = new JSONObject();
        obj.put("v1", jsonObject);
        
        // 传 Feature，两个API均无法正确反序列化
        Bean bean3 = obj.getObject("v1", Bean.class, JSONReader.Feature.SupportSmartMatch);
        Assertions.assertThat(bean3.appID).isEqualTo(null);
        Bean bean4 = JSON.to(Bean.class, jsonObject);
        Assertions.assertThat(bean4.appID).isEqualTo(null);
    }

    @Data
    private static class Bean {
        private String appID;
    }
    
}

期待的正确结果

期望与反序列化API的处理方式保持一致