如何使用API接口查询贵金属实时价格

随着全球经济形势的变化，贵金属如黄金、白银等一直是投资者关注的重点。为了及时掌握贵金属的市场动态，许多专业的投资者和交易平台都依赖于实时的市场数据。传统的手动查询方式往往无法满足快速决策的需求，因此，越来越多的人开始转向通过API接口来获取实时贵金属价格。

API（应用程序编程接口）为用户提供了一种自动化获取数据的方式，能够高效地查询贵金属的实时价格数据，并在多个系统中进行应用。本文将介绍如何通过API接口查询贵金属的实时价格，并探讨如何将这些数据整合到自己的交易系统或分析工具中，以支持投资决策和策略制定。

接口资料

账号注册：https://infoway.io
Github: https://github.com/infoway-api/realtime-market-data-api

示例

通过接口查询现货白银XAGUSD的实时价格：

package org.example.ws;

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.net.HttpURLConnection;
import java.net.URL;

public class HttpExample {
    public static void main(String[] args) {
        try {
            // 定义请求URL
            String apiUrl = "https://data.infoway.io/common/batch_kline/1/10/XAGUSD";
            URL url = new URL(apiUrl);

            // 创建HTTP连接
            HttpURLConnection connection = (HttpURLConnection) url.openConnection();

            // 设置请求方法为GET
            connection.setRequestMethod("GET");

            // 设置请求头（可选）
            connection.setRequestProperty("User-Agent", "Mozilla/5.0");
            connection.setRequestProperty("Accept", "application/json");

            connection.setRequestProperty("apiKey","yourApikey");

            // 获取响应码
            int responseCode = connection.getResponseCode();
            System.out.println("HTTP code: " + responseCode);

            // 读取响应内容
            BufferedReader reader;
            if (responseCode == HttpURLConnection.HTTP_OK) {
                reader = new BufferedReader(new InputStreamReader(connection.getInputStream()));
            } else {
                reader = new BufferedReader(new InputStreamReader(connection.getErrorStream()));
            }

            String line;
            StringBuilder response = new StringBuilder();

            while ((line = reader.readLine()) != null) {
                response.append(line);
            }

            reader.close();

            // 打印响应内容
            System.out.println("message: " + response);

        } catch (IOException e) {
            e.printStackTrace();
        }
    }
}

通过WebSockets订阅现货白银实时价格

package org.example.ws;

import com.alibaba.fastjson2.JSONObject;
import jakarta.websocket.*;

import java.io.IOException;
import java.net.URI;
import java.util.concurrent.Executors;
import java.util.concurrent.ScheduledExecutorService;
import java.util.concurrent.TimeUnit;

public class WebsocketExample {

    private static Session session;

    private static final String WS_URL = "wss://data.infoway.io/ws?business=common&apikey=YourAPIKey";

    public static void main(String[] args) throws Exception {
        try {
            // create WebSocket connect
            WebSocketContainer container = ContainerProvider.getWebSocketContainer();
            session = container.connectToServer(WebsocketExample.MyClientEndpoint.class, URI.create(WS_URL));
            // send message

            JSONObject jsonObject = new JSONObject();
            jsonObject.put("code", 10000);
            jsonObject.put("trace", "01213e9d-90a0-426e-a380-ebed633cba7a");
            JSONObject data = new JSONObject();
            data.put("codes", "XAGUSD");
            jsonObject.put("data", data);

            session.getBasicRemote().sendText(jsonObject.toJSONString());

            ScheduledExecutorService pingExecutor = Executors.newScheduledThreadPool(1);
            Runnable pingTask = WebsocketExample::ping;
            pingExecutor.scheduleAtFixedRate(pingTask, 30, 30, TimeUnit.SECONDS);

            // keep running
            Thread.sleep(600 * 1000);
            // close connect
            session.close();
        } catch (DeploymentException | IOException | InterruptedException e) {
            e.printStackTrace();
        }
    }

    @ClientEndpoint
    public static class MyClientEndpoint {
        @OnOpen
        public void onOpen(Session session) {
            System.out.println("Connection opened: " + session.getId());
        }

        @OnMessage
        public void onMessage(String message, Session session) {
            try {
                System.out.println("Message received: " + message);
            } catch (Exception e) {
            }
        }

        @OnClose
        public void onClose(Session session, CloseReason reason) {
            System.out.println("Connection closed: " + session.getId() + ", reason: " + reason);
        }

        @OnError
        public void onError(Throwable error) {
            error.printStackTrace();
        }
    }

    //ping message
    public static void ping() {
        try {
            JSONObject jsonObject = new JSONObject();
            jsonObject.put("code", 10010);
            jsonObject.put("trace", "01213e9d-90a0-426e-a380-ebed633cba7a");
            session.getBasicRemote().sendText(jsonObject.toJSONString());
        } catch (IOException e) {
            throw new RuntimeException(e);
        }
    }
}