读取json /添加到其中

var jsonString = '{"name": "John", "age": 30, "city": "New York"}';
var jsonObj = JSON.parse(jsonString);
console.log(jsonObj.name);  // 输出：John
console.log(jsonObj.age);   // 输出：30
console.log(jsonObj.city);  // 输出：New York

import json

jsonString = '{"name": "John", "age": 30, "city": "New York"}'
jsonObj = json.loads(jsonString)
print(jsonObj['name'])  # 输出：John
print(jsonObj['age'])   # 输出：30
print(jsonObj['city'])  # 输出：New York

import com.google.gson.Gson;

String jsonString = "{\"name\": \"John\", \"age\": 30, \"city\": \"New York\"}";
Gson gson = new Gson();
MyObject obj = gson.fromJson(jsonString, MyObject.class);
System.out.println(obj.getName());  // 输出：John
System.out.println(obj.getAge());   // 输出：30
System.out.println(obj.getCity());  // 输出：New York

var existingJson = '{"name": "John", "age": 30, "city": "New York"}';
var existingObj = JSON.parse(existingJson);

var newData = {
  "company": "ABC Inc.",
  "position": "Developer"
};

existingObj.data = newData;

var updatedJson = JSON.stringify(existingObj);
console.log(updatedJson);

import json

existingJson = '{"name": "John", "age": 30, "city": "New York"}'
existingObj = json.loads(existingJson)

newData = {
  "company": "ABC Inc.",
  "position": "Developer"
}

existingObj['data'] = newData

updatedJson = json.dumps(existingObj)
print(updatedJson)

import com.google.gson.Gson;

String existingJson = "{\"name\": \"John\", \"age\": 30, \"city\": \"New York\"}";
Gson gson = new Gson();
MyObject existingObj = gson.fromJson(existingJson, MyObject.class);

MyObject newData = new MyObject();
newData.setCompany("ABC Inc.");
newData.setPosition("Developer");

existingObj.setData(newData);

String updatedJson = gson.toJson(existingObj);
System.out.println(updatedJson);