从MicroProfile/Quarkus REST客户端获取响应头

import javax.ws.rs.client.Client;
import javax.ws.rs.client.ClientBuilder;
import javax.ws.rs.client.WebTarget;
import javax.ws.rs.core.Response;

public class RestClientExample {

    public static void main(String[] args) {
        // 创建REST客户端实例
        Client client = ClientBuilder.newClient();

        // 定义目标URL
        WebTarget target = client.target("https://api.example.com/data");

        // 发送GET请求并获取响应
        Response response = target.request().get();

        // 获取并打印响应头
        System.out.println("Response Status: " + response.getStatus());
        System.out.println("Response Headers: ");
        response.getHeaders().forEach((key, values) -> {
            System.out.println(key + ": " + values);
        });

        // 关闭客户端
        client.close();
    }
}

if (response != null && response.getHeaders().containsKey("Content-Type")) {
    System.out.println("Content-Type: " + response.getHeaders().getFirst("Content-Type"));
} else {
    System.out.println("Content-Type header not found or response is null.");
}