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。

示例

通过接口查询现货白银XAGUSD的实时价格：

import java.io.BufferedReader;
import java.io.InputStreamReader;
import java.net.HttpURLConnection;
import java.net.URL;
 
// 接口注册地址：https://alltick.io
 
public class HttpJavaExample {
 
    public static void main(String[] args) {
 
        try {
            // 修改后的URL，查询现货白银（XAGUSD）实时数据
            String url = "http://quote.aatest.online/quote-metal-api/price?token=e945d7d9-9e6e-4721-922a-7251a9d311d0-1678159756806&query=%7B%22trace%22%20%3A%20%22java_http_test1%22%2C%22data%22%20%3A%20%7B%22symbol%22%20%3A%20%22XAGUSD%22%7D%7D";
 
            // 创建URL对象
            URL obj = new URL(url);
 
            // 打开连接
            HttpURLConnection con = (HttpURLConnection) obj.openConnection();
 
            // 设置请求方法
            con.setRequestMethod("GET");
 
            // 获取响应码
            int responseCode = con.getResponseCode();
            System.out.println("Response Code: " + responseCode);
 
            // 读取响应内容
            BufferedReader in = new BufferedReader(new InputStreamReader(con.getInputStream()));
            String inputLine;
            StringBuffer response = new StringBuffer();
 
            while ((inputLine = in.readLine()) != null) {
                response.append(inputLine);
            }
            in.close();
 
            // 输出返回的数据
            System.out.println(response.toString());
 
        } catch (Exception e) {
            e.printStackTrace();
        }
    }
}

通过WebSockets订阅现货白银实时价格：

import java.io.IOException;
import java.lang.reflect.InvocationTargetException;
import java.net.URI;
import java.net.URISyntaxException;
 
import javax.websocket.*;
 
// 接口注册地址：https://alltick.io
 
@ClientEndpoint
public class WebSocketJavaExample {
 
    private Session session;
 
    @OnOpen
    public void onOpen(Session session) {
        System.out.println("Connected to server");
        this.session = session;
    }
 
    @OnMessage
    public void onMessage(String message) {
        System.out.println("Received message: " + message);
    }
 
    @OnClose
    public void onClose(Session session, CloseReason closeReason) {
        System.out.println("Disconnected from server");
    }
 
    @OnError
    public void onError(Throwable throwable) {
        System.err.println("Error: " + throwable.getMessage());
    }
 
    public void sendMessage(String message) throws Exception {
        this.session.getBasicRemote().sendText(message);
    }
 
    public static void main(String[] args) throws Exception, URISyntaxException, DeploymentException, IOException, IllegalArgumentException, SecurityException, NoSuchMethodException, IllegalAccessException, InvocationTargetException, InstantiationException {
 
        // WebSocket服务器的URI，替换为您实际使用的WebSocket端点URL
        WebSocketContainer container = ContainerProvider.getWebSocketContainer();
        URI uri = new URI("wss://quote.aatest.online/quote-metal-ws-api?token=e945d7d9-9e6e-4721-922a-7251a9d311d0-1678159756806");  // 假设这个URL支持贵金属查询
 
        WebSocketJavaExample client = new WebSocketJavaExample();
        container.connectToServer(client, uri);
 
        // 发送查询现货白银XAGUSD的消息
        String requestMessage = "{"
            + "\"cmd_id\": 22002, "
            + "\"seq_id\": 123, "
            + "\"trace\": \"3baaa938-f92c-4a74-a228-fd49d5e2f8bc-1678419657806\", "
            + "\"data\": {"
            + "\"symbol_list\": ["
            + "{"
            + "\"code\": \"XAGUSD\", "
            + "\"depth_level\": 5"
            + "}"
            + "]"
            + "}"
            + "}";
 
        client.sendMessage(requestMessage);
 
        // 等待直到用户输入以关闭程序
        System.in.read();
    }
}