在android应用中将Json格式转换为Csv格式

import org.json.JSONArray;
import org.json.JSONException;
import org.json.JSONObject;

import java.io.BufferedWriter;
import java.io.File;
import java.io.FileWriter;
import java.io.IOException;

public class JsonToCsvConverter {
    public static void convertJsonToCsv(String jsonString, String csvFilePath) {
        try {
            JSONArray jsonArray = new JSONArray(jsonString);
            
            File csvFile = new File(csvFilePath);
            BufferedWriter writer = new BufferedWriter(new FileWriter(csvFile));
            
            // 写入CSV表头
            JSONObject firstJsonObject = jsonArray.getJSONObject(0);
            StringBuilder headerBuilder = new StringBuilder();
            for (String key : firstJsonObject.keySet()) {
                headerBuilder.append(key).append(",");
            }
            String header = headerBuilder.toString().substring(0, headerBuilder.length() - 1);
            writer.write(header);
            writer.newLine();
            
            // 写入CSV数据
            for (int i = 0; i < jsonArray.length(); i++) {
                JSONObject jsonObject = jsonArray.getJSONObject(i);
                StringBuilder dataBuilder = new StringBuilder();
                for (String key : jsonObject.keySet()) {
                    dataBuilder.append(jsonObject.getString(key)).append(",");
                }
                String data = dataBuilder.toString().substring(0, dataBuilder.length() - 1);
                writer.write(data);
                writer.newLine();
            }
            
            writer.close();
        } catch (JSONException e) {
            e.printStackTrace();
        } catch (IOException e) {
            e.printStackTrace();
        }
    }
}

String json = "[{\"name\":\"John\",\"age\":30,\"city\":\"New York\"},{\"name\":\"Jane\",\"age\":25,\"city\":\"London\"}]";
String csvFilePath = "/path/to/output.csv";

JsonToCsvConverter.convertJsonToCsv(json, csvFilePath);