[游戏开发]map的key 下划线 转 驼峰格式 不利用bean 你是怎么转的?

package com.zhuzher.test;

import com.zhuzher.common.util.DateUtil;
import org.apache.commons.lang3.StringUtils;

import java.util.Arrays;
import java.util.HashMap;
import java.util.Map;

/**
 * @author peng2.li(李鹏1204630)
 * @date 2022/1/22 15:14
 */
public class Test2 {
    public static void main(String[] args) {
        Map<String, Object> map = new HashMap<>();
        map.put("1_app_a", "a");
        map.put("2_app_b", "b");
        map.put("3_app_c", "c");
        map.put("4_app_d", "d");
        Map<String, Object> map1 = getMap(map);
        for (Map.Entry<String, Object> entry : map1.entrySet()) {
            System.out.println("key=" + entry.getKey() + "   value=" + entry.getValue());
        }


    }

    /*
     * map的key 下划线 转 驼峰格式  , 不利用bean  你是怎么转的?
     *只针对key是String类型,其他类型不支持
     *
     */
    public static Map<String, Object> getMap(Map<String, Object> map) {
        Map<String, Object> newMap = new HashMap<>();
        if (map != null && map.size() > 0) {
            for (Map.Entry<String, Object> entry : map.entrySet()) {
                String key = entry.getKey();
                if (key instanceof String){
                    Object value = entry.getValue();
                    if (key.indexOf("_") > 0) {
                        String[] split = key.split("_");
                        if (split != null && split.length > 0) {
                            String vv = "";
                            for (int i = 0; i < split.length; i++) {
                                String s = split[i];
                                if (i == 0) {
                                    if (s.length() > 0) {
                                        vv = s;
                                    }
                                } else {
                                    if (s.length() > 0) {
                                        char[] chars = s.toCharArray();
                                        if (chars != null && chars.length > 0) {
                                            String replace = s.replace(chars[0], String.valueOf(chars[0]).toUpperCase().charAt(0));
                                            vv += replace;
                                        }
                                    }
                                }
                            }
                            newMap.put(vv, value);
                        }
                    }
                }

            }
        }
        return newMap;
    }
}