This is an example of fastjson

JSONObject json = JSON.parseObject("{val: 123}");
System.out.println("======before=====");
System.out.println("size: " + json.size());
System.out.println("val:  " + json.get("val"));
json.put("val", 234); // 直接put相同的key
System.out.println("======after======");
System.out.println("size: " + json.size());
System.out.println("val:  " + json.get("val"));

Results

======before=====
size: 1
val:  123
======after======
size: 1
val:  234

What json library are you using? Just change it using the corresponding method

I assume you are using com.googlecode.json-simpleKuba (the information you provided is really too little, I don’t know where to start)

Then, I assume you want to modify shops里第一项的shopName, and the code is written like this:

JSONObject res = (JSONObject) obj.get("result");
JSONArray arr = (JSONArray)res.get("shops");
arr.set(0, "shopName: fuck");
System.out.println(obj);//检查结果

If you want to add something to shops, you can:

JSONObject res = (JSONObject) obj.get("result");
JSONArray arr = (JSONArray)res.get("shops");

JSONObject newShop = new JSONObject();

newShop.put("shopId", "asdfdsaf");
newShop.put("shopName", "毛驴");
newShop.put("icon", "");

arr.add(newShop);
System.out.println(obj);//检查结果

According to the Google json or Alibaba fastjson you use, use the methods they provide to modify it.