java如何接入deepseek

### Java集成DeepSeek API示例及文档 #### 配置环境变量 为了安全地管理和访问API，建议将API密钥和其他敏感信息存储在环境变量中。对于Java应用程序而言，可以通过读取`.env`文件来加载这些配置。 ```java import java.io.IOException; import org.apache.commons.lang3.StringUtils; public class EnvironmentConfig { private static final String BASE_URL = System.getenv("BASE_URL"); private static final String DEEPSEEK_API_KEY = System.getenv("DEEPSEEK_API_KEY"); public static void main(String[] args) throws IOException { if (StringUtils.isNotEmpty(BASE_URL) && StringUtils.isNotEmpty(DEEPSEEK_API_KEY)) { System.out.println("Base URL: " + BASE_URL); System.out.println("Using DeepSeek API Key."); } else { throw new IllegalArgumentException("Environment variables not set properly."); } } } ``` 上述代码展示了如何通过`System.getenv()`方法获取环境变量中的基础URL和API密钥[^3]。 #### 发起HTTP请求 要与DeepSeek API交互，通常需要发送POST或GET请求。可以利用Apache HttpClient库或其他类似的工具包来进行网络通信操作。以下是发起简单查询的一个例子： ```java import org.apache.http.HttpResponse; import org.apache.http.client.methods.CloseableHttpResponse; import org.apache.http.client.methods.HttpPost; import org.apache.http.entity.StringEntity; import org.apache.http.impl.client.CloseableHttpClient; import org.apache.http.impl.client.HttpClients; import org.apache.http.util.EntityUtils; public class ApiClient { private static final String ENDPOINT = "/v1/completions"; public static void callApi() throws Exception { try (CloseableHttpClient httpClient = HttpClients.createDefault()) { HttpPost postRequest = new HttpPost(EnvironmentConfig.BASE_URL + ENDPOINT); // 设置头部信息 postRequest.setHeader("Content-Type", "application/json"); postRequest.setHeader("Authorization", "Bearer " + EnvironmentConfig.DEEPSEEK_API_KEY); // 准备JSON格式的数据体 String jsonInputString = "{\"prompt\": \"Once upon a time\", \"max_tokens\": 50}"; StringEntity entity = new StringEntity(jsonInputString); postRequest.setEntity(entity); CloseableHttpResponse response = httpClient.execute(postRequest); int statusCode = response.getStatusLine().getStatusCode(); String responseBody = EntityUtils.toString(response.getEntity()); System.out.println("Status Code: " + statusCode); System.out.println("Response Body:\n" + responseBody); response.close(); } } public static void main(String[] args) throws Exception { callApi(); } } ``` 此段程序说明了怎样构建一个基本的客户端去调用DeepSeek API服务，并处理返回的结果[^1]。