驼峰命名转换工具类

package com.tiantai.policys.commons.utils.common;

import com.alibaba.fastjson.JSONArray;
import com.alibaba.fastjson.JSONObject;
 
import java.util.*;
 
/**
 * @Description JOSNObject 驼峰转换工具
 * @Author WangKun
 * @Date 2021/9/17 15:12
 * @Version
 */
public class JSONObjectUtil {
 
 
    /**
     * @param json
     * @Description 驼峰命名转换
     * @Throws
     * @Return com.alibaba.fastjson.JSONObject
     * @Date 2021-09-17 17:04:31
     * @Author WangKun
     **/
    public static JSONObject humpConvertJSONObject(JSONObject json) {
        if (null == json) {
            return null;
        }
        Set<String> keys = json.keySet();
        String[] array = keys.toArray(new String[0]);
        for (String key : array) {
            Object value = json.get(key);
            String[] keyArray = key.toLowerCase().split("_");
            if (isUpperCase(key) && !key.contains("_")) {
                json.remove(key);
                json.put(key.toLowerCase(), value);
                continue;
            }
            if (keyArray.length > 1) {
                StringBuilder sb = new StringBuilder();
                for (int i = 0; i < keyArray.length; i++) {
                    String ks = keyArray[i];
                    if (!"".equals(ks)) {
                        if (i == 0) {
                            sb.append(ks);
                        } else {
                            int c = ks.charAt(0);
                            if (c >= 97 && c <= 122) {
                                int v = c - 32;
                                sb.append((char) v);
                                if (ks.length() > 1) {
                                    sb.append(ks.substring(1));
                                }
                            } else {
                                sb.append(ks);
                            }
                        }
                    }
                }
                json.remove(key);
                json.put(sb.toString(), value);
            }
        }
        return json;
    }
 
    /**
     * @param objectList
     * @Description 驼峰转换
     * @Throws
     * @Return java.util.List<com.alibaba.fastjson.JSONObject>
     * @Date 2021-09-17 17:09:15
     * @Author WangKun
     **/
    public static List<JSONObject> humpConvertListObject(List<JSONObject> objectList) {
        if (null == objectList || objectList.size() <= 0) {
            return null;
        }
        List<JSONObject> data = new ArrayList<>();
        for (JSONObject object : objectList) {
            data.add(humpConvertJSONObject(object));
        }
        return data;
    }
 
    /**
     * @param array
     * @Description 驼峰转换
     * @Throws
     * @Return java.util.List<com.alibaba.fastjson.JSONObject>
     * @Date 2021-09-17 17:13:22
     * @Author WangKun
     **/
    public static List<JSONObject> humpConvertJSONArray(JSONArray array) {
        if (null == array || array.size() <= 0) {
            return null;
        }
        List<JSONObject> data = new ArrayList<>();
        for (int i = 0; i < array.size(); i++) {
            data.add(humpConvertJSONObject(array.getJSONObject(i)));
        }
        return data;
    }
 
    /**
     * @param str
     * @Description 判断字符串字母是否为大写
     * @Throws
     * @Return boolean
     * @Date 2021-09-17 17:03:50
     * @Author WangKun
     **/
    public static boolean isUpperCase(String str) {
        for (int i = 0; i < str.length(); i++) {
            char c = str.charAt(i);
            if (c >= 97 && c <= 122) {
                return false;
            }
        }
        return true;
    }
 
 
    public static void main(String[] args) {
        JSONObject jsonObject = new JSONObject();
        jsonObject.put("QWE_QWE1","1");
        jsonObject.put("qwe_qwe2","2");
        jsonObject.put("qwe_Qwe3","3");
        jsonObject.put("QWEQWE4","4");
        jsonObject.put("qweqwe5","5");
        jsonObject.put("qweQwe6","6");
        System.out.println(humpConvertJSONObject(jsonObject));
 
    }
 
}