如何将数据追加到JSON数组

{
  "items": [
    { "id": 1, "name": "Item 1" },
    { "id": 2, "name": "Item 2" }
  ]
}

const fs = require('fs');

// 读取JSON文件
fs.readFile('data.json', 'utf8', (err, data) => {
  if (err) throw err;

  // 解析JSON数据
  const jsonData = JSON.parse(data);

  // 追加新数据
  jsonData.items.push({ id: 3, name: 'Item 3' });

  // 将更新后的数据写回文件
  fs.writeFile('data.json', JSON.stringify(jsonData, null, 2), 'utf8', (err) => {
    if (err) throw err;
    console.log('Data written to file');
  });
});

import json

# 读取JSON文件
with open('data.json', 'r') as file:
    data = json.load(file)

# 追加新数据
data['items'].append({'id': 3, 'name': 'Item 3'})

# 将更新后的数据写回文件
with open('data.json', 'w') as file:
    json.dump(data, file, indent=2)

import java.io.*;
import java.util.*;

public class Main {
    public static void main(String[] args) throws IOException {
        // 读取JSON文件
        BufferedReader reader = new BufferedReader(new FileReader("data.json"));
        StringBuilder sb = new StringBuilder();
        String line;
        while ((line = reader.readLine()) != null) {
            sb.append(line);
        }
        reader.close();

        // 解析JSON数据
        JSONObject jsonObject = new JSONObject(sb.toString());
        JSONArray items = jsonObject.getJSONArray("items");

        // 追加新数据
        items.put(new JSONObject().put("id", 3).put("name", "Item 3"));

        // 将更新后的数据写回文件
        BufferedWriter writer = new BufferedWriter(new FileWriter("data.json"));
        writer.write(jsonObject.toString(2));
        writer.close();
    }
}