使用fastjson获取json串中的所有键值对

落日映苍穹つ 2023-01-01 03:44 227阅读 0赞

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\}