阿里云百炼 Token Plan Java 原生HTTP调用示例

package org.example.aliyun;

import java.net.URI;
import java.net.http.HttpClient;
import java.net.http.HttpRequest;
import java.net.http.HttpResponse;
import java.nio.charset.StandardCharsets;

/**
 * 阿里云百炼按 Token 计费（Token Plan）HTTP 直连调用示例
 *
 * 不依赖官方 SDK，直接调用 DashScope 的 OpenAI 兼容接口。
 * 接口地址：https://token-plan.cn-beijing.maas.aliyuncs.com/compatible-mode/v1/chat/completions
 *
 * 使用前提：
 * 1. 从阿里云百炼控制台获取 API Key
 * 2. 将 API Key 配置为环境变量 DASHSCOPE_API_KEY
 */
public class AliyunTokenPlanHttpDemo {

    private static final String API_URL =
            "https://token-plan.cn-beijing.maas.aliyuncs.com/compatible-mode/v1/chat/completions";

    public static void main(String[] args) throws Exception {
        String apiKey = "your-api-key";

        if (apiKey == null || apiKey.isBlank()) {
            System.err.println("请先设置环境变量 DASHSCOPE_API_KEY");
            return;
        }

        // 请求体：OpenAI 兼容格式
        String requestBody = """
                {
                  "model": "qwen3.8-max",
                  "messages": [
                    {"role": "system", "content": "你是一个乐于助人的助手。"},
                    {"role": "user", "content": "用一句话介绍阿里云百炼怎么用Java"}
                  ]
                }
                """;

        HttpRequest request = HttpRequest.newBuilder()
                .uri(URI.create(API_URL))
                .header("Authorization", "Bearer " + apiKey)
                .header("Content-Type", "application/json")
                .POST(HttpRequest.BodyPublishers.ofString(requestBody, StandardCharsets.UTF_8))
                .build();

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

        System.out.println("HTTP 状态码：" + response.statusCode());
        System.out.println("响应内容：");
        System.out.println(response.body());

    }
}

{
  "model": "qwen3.8-max",
  "stream": true,
  "messages": [
    {"role": "system", "content": "你是一个乐于助人的助手。"},
    {"role": "user", "content": "用一句话介绍阿里云百炼怎么用Java"}
  ]
}