对json数据key进行替换

对json数据key进行替换

这是专门为json数据key值替换所做

import java.util.HashMap;
import java.util.Map;
import java.util.Set;

import com.alibaba.fastjson.JSONArray;
import com.alibaba.fastjson.JSONObject;

/**
 * 
 * 对json数据key进行替换
 * @author hongji
 * @date 2018-10-26
 *
 */
public class JSONUtil {

	public static JSONObject changeJsonObj(JSONObject jsonObj,Map keyMap) {
		JSONObject resJson = new JSONObject();
		Set keySet = jsonObj.keySet();
		for (String key : keySet) {
			String resKey = keyMap.get(key) == null ? key : keyMap.get(key);
			try {
				JSONObject jsonobj1 = jsonObj.getJSONObject(key);
				resJson.put(resKey, changeJsonObj(jsonobj1, keyMap));
			} catch (Exception e) {
				try {
					JSONArray jsonArr = jsonObj.getJSONArray(key);
					resJson.put(resKey, changeJsonArr(jsonArr, keyMap));
				} catch (Exception x) {
					resJson.put(resKey, jsonObj.get(key));
				}
			}
		}
		return resJson;
	}
	
	public static JSONArray changeJsonArr(JSONArray jsonArr,Map keyMap) {
		JSONArray resJson = new JSONArray();
		for (int i = 0; i < jsonArr.size(); i++) {
			JSONObject jsonObj = jsonArr.getJSONObject(i);
			resJson.add(changeJsonObj(jsonObj, keyMap));
		}
		return resJson;
	}
	
	public static void main(String[] args) {
		String jsonStr = "{\"user\":{\"name\":\"张三\",\"sex\":\"男\",\"hobby\":[{\"motion\":\"足球\",\"desc\":\"任性\"},{\"game\":\"英雄联盟\",\"desc\":\"就是这么任性\"}]}}";
		Map keyMap = new HashMap();
		keyMap.put("name", "XingMing");
		keyMap.put("user", "YongHu");
		keyMap.put("desc", "MiaoShu");
		JSONObject jsonObj = JSONUtil.changeJsonObj(JSONObject.parseObject(jsonStr),keyMap);
		System.out.println("换值结果 》》 " + jsonObj.toString());
	}
}