标题授权密钥未被接受

Question

我试图从在线数据库服务Ragic获取一些JSON信息，并且需要在标头中使用API​​密钥查询URL。我尝试过几种不同的编码方法，但每次我都会找回一个空URL，这意味着标题中缺少API密钥或标题是错误的。我不确定问题是什么，代码编译，但只是简单地返回一个空的HTML＆＃34; {}＆＃34;，这意味着没有收到任何JSON。

package main;

import java.io.*;
import java.net.*;
import org.apache.commons.codec.binary.Base64;

public class Example {

public static void main(String[] args) throws UnsupportedEncodingException, Exception {
    String apiKey = "apikey";
    try {
        URL url = new URL("https://api.ragic.com/parcare/new-tab/1");
        HttpURLConnection conn = (HttpURLConnection)url.openConnection();

        String basicAuth = "Basic " + new String(new Base64().encode(apiKey.getBytes()));
        basicAuth = basicAuth.replaceAll("\n", "");

        conn.addRequestProperty("Authorization", basicAuth);
        conn.setRequestMethod("POST");
        conn.connect();

        try (BufferedReader reader = new BufferedReader(new InputStreamReader(url.openStream(), "UTF-8"))) {
            for (String line; (line = reader.readLine()) != null;) {
                System.out.println(line);
            }
        }
        } catch (MalformedURLException e) {
            e.printStackTrace();
        } catch (RuntimeException allDownloadExceptions) {
            allDownloadExceptions.printStackTrace();
        }
    }
}