Java SDK REST API 和 WebSocket 实时推送接口 金融数据API文档 SDK & 开发工具 iTick 官方 Java SDK，提供基础、股票、指数、期货、基金、外汇、加密货币数据的 REST API 查询和 WebSocket 实时数据订阅功能。

import io.itick.sdk.Client;

public class Example {
    public static void main(String[] args) {
        String token = "your_api_token";
        Client client = new Client(token);
    }
}

// 获取外汇实时成交
var tick = client.getForexTick("GB", "EURUSD");
System.out.println(tick);

// 获取外汇实时报价
var quote = client.getForexQuote("GB", "EURUSD");
System.out.println(quote);

// 获取外汇实时盘口
var depth = client.getForexDepth("GB", "EURUSD");
System.out.println(depth);

// 获取外汇历史K线
var kline = client.getForexKline("GB", "EURUSD", 2, 10, null);
for (var k : kline) {
    System.out.println(k);
}

// 获取股票实时成交
var tick = client.getStockTick("US", "AAPL");
System.out.println(tick);

// 获取股票实时报价
var quote = client.getStockQuote("US", "AAPL");
System.out.println(quote);

// 获取股票实时盘口
var depth = client.getStockDepth("US", "AAPL");
System.out.println(depth);

// 获取股票历史K线
var kline = client.getStockKline("US", "AAPL", 2, 10, null);
for (var k : kline) {
    System.out.println(k);
}

// 获取加密货币实时成交
var tick = client.getCryptoTick("BA", "BTCUSDT");
System.out.println(tick);

// 获取加密货币实时报价
var quote = client.getCryptoQuote("BA", "BTCUSDT");
System.out.println(quote);

// 获取加密货币实时盘口
var depth = client.getCryptoDepth("BA", "BTCUSDT");
System.out.println(depth);

// 获取加密货币历史K线
var kline = client.getCryptoKline("BA", "BTCUSDT", 2, 10, null);
for (var k : kline) {
    System.out.println(k);
}

// 设置消息处理器
client.setMessageHandler(message -> {
    System.out.println("Received WebSocket message: " + message);
});

// 设置错误处理器
client.setErrorHandler(error -> {
    System.err.println("WebSocket error: " + error.getMessage());
});

// 设置打开处理器
client.setOpenHandler(() -> {
    System.out.println("WebSocket connected");
});

// 设置关闭处理器
client.setCloseHandler(() -> {
    System.out.println("WebSocket closed");
});

// 连接外汇 WebSocket
client.connectForexWebSocket();

// 发送订阅消息
client.sendWebSocketMessage("{\"action\": \"subscribe\", \"codes\": [\"EURUSD\"]}");

// 等待接收消息
Thread.sleep(5000);

// 检查连接状态
System.out.println("WebSocket connected: " + client.isWebSocketConnected());

// 关闭 WebSocket
client.closeWebSocket();

// 连接股票 WebSocket
client.connectStockWebSocket();

// 连接加密货币 WebSocket
client.connectCryptoWebSocket();

// 检查 WebSocket 是否连接
boolean connected = client.isWebSocketConnected();

import io.itick.sdk.Client;

public class Main {
    public static void main(String[] args) {
        try {
            // 初始化客户端
            String token = "your_api_token";
            Client client = new Client(token);

            // 设置 WebSocket 消息处理器
            client.setMessageHandler(message -> {
                System.out.println("Received WebSocket message: " + message);
            });

            // 设置 WebSocket 错误处理器
            client.setErrorHandler(error -> {
                System.err.println("WebSocket error: " + error.getMessage());
            });

            // 测试 REST API
            System.out.println("Testing forex tick...");
            var tick = client.getForexTick("GB", "EURUSD");
            System.out.println(tick);

            // 测试 WebSocket
            System.out.println("\nTesting WebSocket...");
            client.connectForexWebSocket();

            // 发送订阅消息
            client.sendWebSocketMessage("{\"action\": \"subscribe\", \"codes\": [\"EURUSD\"]}");

            // 等待接收消息
            Thread.sleep(5000);

            // 检查连接状态
            System.out.println("WebSocket connected: " + client.isWebSocketConnected());

            // 关闭 WebSocket
            client.closeWebSocket();

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