如何在纯Java控制台应用程序中获取令牌？

import org.apache.http.HttpEntity;
import org.apache.http.HttpResponse;
import org.apache.http.client.HttpClient;
import org.apache.http.client.methods.HttpPost;
import org.apache.http.entity.StringEntity;
import org.apache.http.impl.client.HttpClients;
import org.apache.http.util.EntityUtils;

public class TokenRetriever {
    public static void main(String[] args) {
        try {
            // 创建HttpClient对象
            HttpClient httpClient = HttpClients.createDefault();

            // 创建HttpPost对象，并设置请求URL
            HttpPost httpPost = new HttpPost("https://example.com/token");

            // 添加身份验证信息到请求头
            httpPost.setHeader("Authorization", "Bearer your_token_here");

            // 发送HTTP请求
            HttpResponse response = httpClient.execute(httpPost);

            // 解析响应
            HttpEntity entity = response.getEntity();
            String responseString = EntityUtils.toString(entity);

            // 处理响应，获取令牌
            // ...

            // 使用令牌进行后续操作
            // ...
        } catch (Exception e) {
            e.printStackTrace();
        }
    }
}