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在Java中集成DeepSeek的详细步骤

DeepSeek提供了强大的语言模型API，但目前DeepSeek的官方SDK主要支持JavaScript/TypeScript环境 。要在Java应用程序中集成DeepSeek，我们需要通过REST API调用的方式来实现。以下是详细的集成步骤：

1. 创建Maven项目并添加依赖

首先，创建一个Maven项目并添加必要的依赖：

<project xmlns="http://maven.apache.org/POM/4.0.0"xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd"><modelVersion>4.0.0</modelVersion><groupId>com.example</groupId><artifactId>deepseek-java-client</artifactId><version>1.0-SNAPSHOT</version><properties><maven.compiler.source>17</maven.compiler.source><maven.compiler.target>17</maven.compiler.target><project.build.sourceEncoding>UTF-8</project.build.sourceEncoding></properties><dependencies><!-- HTTP客户端 --><dependency><groupId>com.squareup.okhttp3</groupId><artifactId>okhttp</artifactId><version>4.12.0</version></dependency><!-- JSON处理 --><dependency><groupId>com.fasterxml.jackson.core</groupId><artifactId>jackson-databind</artifactId><version>2.16.1</version></dependency><!-- 日志 --><dependency><groupId>org.slf4j</groupId><artifactId>slf4j-api</artifactId><version>2.0.9</version></dependency><dependency><groupId>ch.qos.logback</groupId><artifactId>logback-classic</artifactId><version>1.4.14</version></dependency></dependencies>
</project>

2. 创建DeepSeek客户端类

接下来，创建一个Java客户端类来处理与DeepSeek API的通信：

package com.example.deepseek;import com.fasterxml.jackson.databind.JsonNode;
import com.fasterxml.jackson.databind.ObjectMapper;
import com.fasterxml.jackson.databind.node.ArrayNode;
import com.fasterxml.jackson.databind.node.ObjectNode;
import okhttp3.*;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;import java.io.IOException;
import java.util.ArrayList;
import java.util.List;
import java.util.concurrent.TimeUnit;public class DeepSeekClient {private static final Logger logger = LoggerFactory.getLogger(DeepSeekClient.class);private static final String BASE_URL = "https://api.deepseek.com/v1";private final OkHttpClient httpClient;private final ObjectMapper objectMapper;private final String apiKey;public DeepSeekClient(String apiKey) {this.apiKey = apiKey;this.objectMapper = new ObjectMapper();// 配置HTTP客户端，设置超时this.httpClient = new OkHttpClient.Builder().connectTimeout(30, TimeUnit.SECONDS).readTimeout(90, TimeUnit.SECONDS).writeTimeout(30, TimeUnit.SECONDS).build();}/*** 生成文本（非流式）*/public String generateText(String model, String prompt, String systemPrompt) throws IOException {// 构建请求体ObjectNode requestBody = objectMapper.createObjectNode();requestBody.put("model", model);ArrayNode messagesArray = requestBody.putArray("messages");// 添加系统消息（如果有）if (systemPrompt != null && !systemPrompt.isEmpty()) {ObjectNode systemMessage = messagesArray.addObject();systemMessage.put("role", "system");systemMessage.put("content", systemPrompt);}// 添加用户消息ObjectNode userMessage = messagesArray.addObject();userMessage.put("role", "user");userMessage.put("content", prompt);// 构建请求Request request = new Request.Builder().url(BASE_URL + "/chat/completions").header("Authorization", "Bearer " + apiKey).header("Content-Type", "application/json").post(RequestBody.create(requestBody.toString(),MediaType.parse("application/json"))).build();// 发送请求try (Response response = httpClient.newCall(request).execute()) {if (!response.isSuccessful()) {throw new IOException("API调用失败: " + response.code() + " " + response.message());}String responseBody = response.body().string();JsonNode jsonResponse = objectMapper.readTree(responseBody);// 解析响应JsonNode choices = jsonResponse.get("choices");if (choices != null && choices.isArray() && choices.size() > 0) {JsonNode message = choices.get(0).get("message");if (message != null) {return message.get("content").asText();}}throw new IOException("无法解析API响应: " + responseBody)