返回空响应以及与邮递员不同的标头的Okhttp3请求

import okhttp3.OkHttpClient;
import okhttp3.Request;
import okhttp3.Response;

public class OkHttpExample {
    public static void main(String[] args) {
        OkHttpClient client = new OkHttpClient();

        // 创建自定义请求头
        Request request = new Request.Builder()
                .url("http://example.com")
                .header("Custom-Header", "CustomValue")
                .build();

        try {
            Response response = client.newCall(request).execute();
            if (response.isSuccessful()) {
                String responseBody = response.body().string();
                System.out.println("Response: " + responseBody);
            } else {
                System.out.println("Request failed with code: " + response.code());
            }
        } catch (IOException e) {
            e.printStackTrace();
        }
    }
}