package com.ucredit.test; 
import com.alibaba.fastjson.JSON;
import com.alibaba.fastjson.JSONArray;
import com.alibaba.fastjson.JSONObject;
 
/**
 * Created by beibei on 18/1/24.
 */
public class JsonTest { 
    public static void main(String[] args) {
        String sa = "{'sa':'saas','sb':['sa','ds','sda'],'sc':{'dsa':'21'}}";
        JSONObject jsonObject = JSON.parseObject(sa);
        System.out.println(changeSensitiveMsg(jsonObject).toJSONString());
    }
 
    //遞歸對象
    private static JSONObject changeSensitiveMsg(JSONObject jsonObject) {
        for (String key : jsonObject.keySet()) {
            String json = jsonObject.getString(key);
            if (isObject(json)) {
                jsonObject.put(key, changeSensitiveMsg(JSON.parseObject(json)));
            } else if (isArray(json)) {
                jsonObject.put(key, changeSensitiveMsg(JSON.parseArray(json)));
            } else {
                //這里才是最終覆蓋敏感屬性的操作
                if (isSensitiveKey(key))
                    jsonObject.put(key, "測試");
            }
        }
        return jsonObject;
    }
 
    //遞歸數(shù)組
    private static JSONArray changeSensitiveMsg(JSONArray jsonArray) {
        for (int i = 0; i < jsonArray.size(); i++) {
            String value = jsonArray.getString(i);
            if (isArray(value)) {
                jsonArray.set(i, changeSensitiveMsg(jsonArray.getJSONArray(i)));
            } else if (isObject(value)) {
                jsonArray.set(i, changeSensitiveMsg(JSON.parseObject(value)));
            }
        }
        return jsonArray;
    }
 
    //判斷是否是對象，這個方法需要優(yōu)化，遇到特殊字符相當(dāng)占時間，可以根據(jù)json串首字母直接判斷
    private static boolean isObject(String str) {
        try {
            JSON.parseObject(str);
            return true;
        } catch (Exception e) {
            return false;
        }
    }
 
    //判斷是否是數(shù)組，這個方法需要優(yōu)化，遇到特殊字符相當(dāng)占時間，可以根據(jù)json串首字母直接判斷
    private static boolean isArray(String str) {
        try {
            JSON.parseArray(str);
            return true;
        } catch (Exception e) {
            return false;
        }
    }
 
    //是否是敏感key
    public static boolean isSensitiveKey(String key) {
        return true;
    }
}

char[] chars = new char[] { 'a', 'a', 'a', 'a' };
String valueStr = new String(chars);
System.out.println(valueStr);
Field field = valueStr.getClass().getDeclaredField("value");
field.setAccessible(true);
field.set(valueStr, new char[] { 0, 0, 0, 0 });
field.setAccessible(false);
System.out.println(valueStr);
System.out.println("aaaa");
System.out.println(new String(new char[] { 'a', 'a', 'a', 'a' }));