A股排行

import java.net.URI;
import java.net.http.HttpClient;
import java.net.http.HttpRequest;
import java.net.http.HttpResponse;

public class ToolkkExample {
    public static void main(String[] args) throws Exception {
        String payload = "{\n  \"sort\": \"排序字段，可选：changeRate 涨跌率排序，volume 成交量排序，value 成交额排序，amplitude 振幅排序， turnOver 换手率排序...\",\n  \"asc\": \"排序顺序，0 倒序（由大到小）， 1正序（由小到大），默认0\",\n  \"page\": \"页码，默认1\",\n  \"limit\": \"每页条数，最大100条，默认10\",\n  \"market\": \"市场代码，可选：hs_a 沪深A股 ，hs_b 沪深B股，hs_bjs 北交所，kcb 科创板，cyb 创业板，hs 沪深所有（AB股全包含）\"\n}";

        HttpRequest request = HttpRequest.newBuilder()
            .uri(URI.create("https://openapi.toolkk.com/v1/finance-a-shares-ranking"))
            .method("POST", HttpRequest.BodyPublishers.ofString(payload))
            .header("Content-Type", "application/json")
            .header("X-API-Key", "YOUR_API_KEY")
            .build();

        HttpResponse<String> response = HttpClient.newHttpClient()
            .send(request, HttpResponse.BodyHandlers.ofString());

        System.out.println(response.body());
    }
}