使用fastjson获取json串中的所有键值对

获取json中的所有键值对 不含jsonarry哈 有需要自己修改

具体如下

package com.zj.test;

import com.alibaba.fastjson.JSON;
import com.alibaba.fastjson.JSONObject;

import java.util.*;

public class Test_json {
    public static void main(String[] args){
        String s = "{\"A\":{\"B\":{\"C\":1,\"D\":2}},\"E\":3}";
        JSONObject jsonObject = JSONObject.parseObject(s);
        Map param = new HashMap();
        for (Map.Entry entry : jsonObject.entrySet()) {
            String object = jsonObject.getString(String.valueOf(entry.getKey()));
            param.put(entry.getKey(),object);
            if(isJsonObject(object)){
                JSONObject son = JSONObject.parseObject(JSON.parseObject(object, String.class));
                getAllKey(son,param);
            }
        }
        System.out.println("=======>"+param);

    }

    public static Boolean isJsonObject(String jsonString){
        try{
            JSONObject.parseObject(JSON.parseObject(jsonString, String.class));
            return true;
        }catch (Exception e){
            return false;
        }
    }

    public static void getAllKey(JSONObject jsonObject,Map param){
        for (Map.Entry entry : jsonObject.entrySet()) {
            String string = jsonObject.getString(String.valueOf(entry.getKey()));
            param.put(entry.getKey(),string);
            if(isJsonObject(string)){
                JSONObject son = JSONObject.parseObject(JSON.parseObject(string, String.class));
                getAllKey(son,param);
            }
        }
    }


}

 

查询结果为

=======>{A={"B":{"C":1,"D":2}}, B={"C":1,"D":2}, C=1, D=2, E=3}