从互联网或谷歌(Android studio)获取日期和时间

import okhttp3.OkHttpClient;
import okhttp3.Request;
import okhttp3.Response;

import java.io.IOException;
import java.text.SimpleDateFormat;
import java.util.Date;

public class DateTimeFetcher {
    private static final String TIME_SERVER_URL = "http://your-time-server-url"; // 替换为实际的时间服务器URL

    public static void main(String[] args) {
        OkHttpClient client = new OkHttpClient();

        Request request = new Request.Builder()
                .url(TIME_SERVER_URL)
                .build();

        try {
            Response response = client.newCall(request).execute();
            if (response.isSuccessful()) {
                String responseData = response.body().string();
                // 解析响应数据，获取日期和时间信息
                Date dateTime = parseDateTime(responseData);
                // 处理日期和时间，例如格式化输出
                SimpleDateFormat dateFormat = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
                String formattedDateTime = dateFormat.format(dateTime);
                System.out.println("当前日期和时间：" + formattedDateTime);
            } else {
                System.out.println("请求失败：" + response.code());
            }
        } catch (IOException e) {
            e.printStackTrace();
        }
    }

    private static Date parseDateTime(String responseData) {
        // 解析响应数据，获取日期和时间信息的逻辑
        // ...
        return new Date(); // 返回一个示例日期和时间
    }
}