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引言

在当今快速发展的数据驱动时代，企业越来越重视数据的价值。为了更好地理解和利用数据，许多公司开始采用先进的数据分析和搜索技术。DeepSeek（深度求索）就是一款强大的深度学习驱动的搜索和推荐系统，可以帮助企业高效地处理和分析大规模数据。本文将详细介绍如何在Spring Boot项目中接入DeepSeek，帮助各位大大快速上手并利用其强大的功能。

1. 什么是DeepSeek？

DeepSeek 是一款基于深度学习的搜索和推荐系统，能够帮助企业从海量数据中快速提取有价值的信息。它结合了自然语言处理（NLP）、机器学习和深度学习技术，提供精准的搜索结果和个性化推荐。DeepSeek的主要特点包括：
精准搜索：通过深度学习算法，DeepSeek能够理解用户查询的意图，提供更精准的搜索结果。
个性化推荐：基于用户行为和偏好，DeepSeek能够为用户提供个性化的推荐内容。
高效处理：支持大规模数据处理，能够快速响应用户请求。
易于集成：提供丰富的API接口，方便与其他系统集成。

2. 准备工作

在开始接入DeepSeek之前，需要完成以下准备工作：

2.1 注册DeepSeek账号

首先，访问DeepSeek的API开放平台（ https://platform.deepseek.com/sign_in），注册一个账号。注册完成后，登录账号并创建一个新的项目，获取项目ID和API密钥。

注意：生成key后需要充值后才能正常调用其API。

3.实战演示

3.1 application增加DS配置

ds:key: 填写在官网申请的keyurl: https://api.deepseek.com/chat/completions

3.2 编写service

/*** DsChatService* @author senfel* @version 1.0* @date 2025/3/13 17:30*/
public interface DsChatService {/*** chat* @param userId* @param question* @author senfel* @date 2025/3/13 17:30* @return org.springframework.web.servlet.mvc.method.annotation.SseEmitter*/SseEmitter chat(String userId,String question);
}

/*** DsChatServiceImpl* @author senfel* @version 1.0* @date 2025/3/13 17:31*/
@Service
@Slf4j
public class DsChatServiceImpl implements DsChatService {@Value("${ds.key}")private String dsKey;@Value("${ds.url}")private String dsUrl;// 用于保存每个用户的对话历史private final Map<String, List<Map<String, String>>> sessionHistory = new ConcurrentHashMap<>();private final ExecutorService executorService = Executors.newCachedThreadPool();private final ObjectMapper objectMapper = new ObjectMapper();/*** chat* @param userId* @param question* @author senfel* @date 2025/3/13 17:36* @return org.springframework.web.servlet.mvc.method.annotation.SseEmitter*/@Overridepublic SseEmitter chat(String userId,String question) {SseEmitter emitter = new SseEmitter(-1L);executorService.execute(() -> {try {log.info("流式回答开始, 问题: {}", question);// 获取当前用户的对话历史List<Map<String, String>> messages = sessionHistory.getOrDefault(userId, new ArrayList<>());// 添加用户的新问题到对话历史Map<String, String> userMessage = new HashMap<>();userMessage.put("role", "user");userMessage.put("content", question);Map<String, String> systemMessage = new HashMap<>();systemMessage.put("role", "system");systemMessage.put("content", "senfel的AI助手");messages.add(userMessage);messages.add(systemMessage);// 调用 DeepSeek APItry (CloseableHttpClient client = HttpClients.createDefault()) {HttpPost request = new HttpPost(dsUrl);request.setHeader("Content-Type", "application/json");request.setHeader("Authorization", "Bearer " + dsKey);Map<String, Object> requestMap = new HashMap<>();requestMap.put("model", "deepseek-chat");requestMap.put("messages", messages);requestMap.put("stream", true);String requestBody = objectMapper.writeValueAsString(requestMap);request.setEntity(new StringEntity(requestBody, StandardCharsets.UTF_8));try (CloseableHttpResponse response = client.execute(request);BufferedReader reader = new BufferedReader(new InputStreamReader(response.getEntity().getContent(), StandardCharsets.UTF_8))) {StringBuilder aiResponse = new StringBuilder();String line;while ((line = reader.readLine()) != null) {if (line.startsWith("data: ")) {System.err.println(line);String jsonData = line.substring(6);if ("[DONE]".equals(jsonData)) {break;}JsonNode node = objectMapper.readTree(jsonData);String content = node.path("choices").path(0).path("delta").path("content").asText("");if (!content.isEmpty()) {emitter.send(content);aiResponse.append(content); // 收集 AI 的回复}}}// 将 AI 的回复添加到对话历史Map<String, String> aiMessage = new HashMap<>();aiMessage.put("role", "assistant");aiMessage.put("content", aiResponse.toString());messages.add(aiMessage);// 更新会话状态sessionHistory.put(userId, messages);log.info("流式回答结束, 问题: {}", question);emitter.complete();}} catch (Exception e) {log.error("处理 DeepSeek 请求时发生错误", e);emitter.completeWithError(e);}} catch (Exception e) {log.error("处理 DeepSeek 请求时发生错误", e);emitter.completeWithError(e);}});return emitter;}}

3.3 编写controller

/*** DsController* @author senfel* @version 1.0* @date 2025/3/13 17:21*/
@RestController
@RequestMapping("/deepSeek")
@Slf4j
public class DsController {@Resourceprivate DsChatService dsChatService;/*** chat page* @param modelAndView* @author senfel* @date 2025/3/13 17:39* @return org.springframework.web.servlet.ModelAndView*/@GetMapping()public ModelAndView chat(ModelAndView modelAndView) {modelAndView.setViewName("chat");return modelAndView;}/*** chat* @param question* @author senfel* @date 2025/3/13 17:39* @return org.springframework.web.servlet.mvc.method.annotation.SseEmitter*/@PostMapping(value = "/chat", produces = MediaType.TEXT_EVENT_STREAM_VALUE)public SseEmitter chat(@RequestBody String question) {//TODO 默认用户ID,实际场景从token获取String userId = "senfel";return dsChatService.chat(userId, question);}
}

3.4 编写前端界面chat.html

<!DOCTYPE html>
<html lang="en">
<head><meta charset="UTF-8"><meta name="viewport" content="width=device-width, initial-scale=1.0"><title>DeepSeek Chat</title><script src="https://cdn.jsdelivr.net/npm/marked/marked.min.js"></script><style>:root {--primary-color: #5b8cff;--user-bg: linear-gradient(135deg, #5b8cff 0%, #3d6ef7 100%);--bot-bg: linear-gradient(135deg, #f0f8ff 0%, #e6f3ff 100%);--shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1);}body {font-family: 'Segoe UI', system-ui, -apple-system, sans-serif;margin: 0;padding: 20px;display: flex;justify-content: center;min-height: 100vh;background: linear-gradient(135deg, #f8f9fa 0%, #e9ecef 100%);}.chat-container {width: 100%;max-width: 800px;height: 90vh;background: rgba(255, 255, 255, 0.95);border-radius: 20px;box-shadow: var(--shadow);backdrop-filter: blur(10px);display: flex;flex-direction: column;overflow: hidden;}.chat-header {padding: 24px;background: var(--primary-color);color: white;box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);}.chat-header h1 {margin: 0;font-size: 1.8rem;font-weight: 600;letter-spacing: -0.5px;}.chat-messages {flex: 1;padding: 20px;overflow-y: auto;display: flex;flex-direction: column;gap: 12px;}.chat-message {max-width: 75%;padding: 16px 20px;border-radius: 20px;line-height: 1.5;animation: messageAppear 0.3s ease-out;position: relative;word-break: break-word;}.chat-message.user {background: var(--user-bg);color: white;align-self: flex-end;border-bottom-right-radius: 4px;box-shadow: var(--shadow);}.chat-message.bot {background: var(--bot-bg);color: #2d3748;align-self: flex-start;border-bottom-left-radius: 4px;box-shadow: var(--shadow);}.chat-input {padding: 20px;background: rgba(255, 255, 255, 0.9);border-top: 1px solid rgba(0, 0, 0, 0.05);display: flex;gap: 12px;}.chat-input input {flex: 1;padding: 14px 20px;border: 2px solid rgba(0, 0, 0, 0.1);border-radius: 16px;font-size: 1rem;transition: all 0.2s ease;background: rgba(255, 255, 255, 0.8);}.chat-input input:focus {outline: none;border-color: var(--primary-color);box-shadow: 0 0 0 3px rgba(91, 140, 255, 0.2);}.chat-input button {padding: 12px 24px;border: none;border-radius: 16px;background: var(--primary-color);color: white;font-size: 1rem;font-weight: 500;cursor: pointer;transition: all 0.2s ease;display: flex;align-items: center;gap: 8px;}.chat-input button:hover {background: #406cff;transform: translateY(-1px);}.chat-input button:disabled {background: #c2d1ff;cursor: not-allowed;transform: none;}.chat-input button svg {width: 18px;height: 18px;fill: currentColor;}@keyframes messageAppear {from {opacity: 0;transform: translateY(10px);}to {opacity: 1;transform: translateY(0);}}.typing-indicator {display: inline-flex;gap: 6px;padding: 12px 20px;background: var(--bot-bg);border-radius: 20px;align-self: flex-start;}.typing-dot {width: 8px;height: 8px;background: rgba(0, 0, 0, 0.3);border-radius: 50%;animation: typing 1.4s infinite ease-in-out;}.typing-dot:nth-child(2) {animation-delay: 0.2s;}.typing-dot:nth-child(3) {animation-delay: 0.4s;}@keyframes typing {0%,100% {transform: translateY(0);}50% {transform: translateY(-4px);}}@media (max-width: 640px) {body {padding: 10px;}.chat-container {height: 95vh;border-radius: 16px;}.chat-message {max-width: 85%;}}</style>
</head>
<body>
<div class="chat-container"><div class="chat-header"><h1>DeepSeek Chat</h1></div><div class="chat-messages" id="chatMessages"></div><div class="chat-input"><input type="text" id="questionInput" placeholder="输入消息..." onkeydown="handleKeyDown(event)"><button id="sendButton" disabled><svg viewBox="0 0 24 24"><path d="M2.01 21L23 12 2.01 3 2 10l15 2-15 2z" /></svg>发送</button></div>
</div>
<script>const questionInput = document.getElementById('questionInput');const sendButton = document.getElementById('sendButton');const chatMessages = document.getElementById('chatMessages');let isBotResponding = false;// 输入验证questionInput.addEventListener('input', () => {sendButton.disabled = questionInput.value.trim().length === 0;});// 回车发送function handleKeyDown(e) {if (e.key === 'Enter' && !sendButton.disabled && !isBotResponding) {sendButton.click();}}// 修改后的消息处理逻辑let currentBotMessage = null; // 当前正在更新的AI消息async function handleBotResponse(response) {const reader = response.body.getReader();const decoder = new TextDecoder();let buffer = '';currentBotMessage = displayMessage('bot', '');try {while (true) {const { done, value } = await reader.read();if (done) {// 处理最后剩余的数据if (buffer) processLine(buffer);break;}buffer += decoder.decode(value, { stream: true });const lines = buffer.split('\n');// 保留未完成的行在缓冲区buffer = lines.pop() || '';lines.forEach(line => {if (line.startsWith('data:')) {const data = line.replace(/^data:\s*/g, '').trim();if (data === '[DONE]') return;currentBotMessage.textContent += data;}});chatMessages.scrollTop = chatMessages.scrollHeight;}} finally {currentBotMessage = null;}}// 发送逻辑sendButton.addEventListener('click', async () => {if (isBotResponding) return;const question = questionInput.value.trim();if (!question) return;questionInput.value = '';sendButton.disabled = true;isBotResponding = true;// 显示用户消息（新消息始终出现在下方）displayMessage('user', question);try {// 显示加载状态const typingIndicator = createTypingIndicator();const response = await fetch('/deepSeek/chat', {method: 'POST',headers: {'Content-Type': 'application/json','Accept': 'text/event-stream'},body: JSON.stringify({ question }),});typingIndicator.remove();await handleBotResponse(response); // 处理流式响应} catch (error) {displayMessage('bot', '暂时无法处理您的请求，请稍后再试');} finally {isBotResponding = false;questionInput.focus();}});// 创建消息元素function displayMessage(sender, content) {const messageDiv = document.createElement('div');messageDiv.className = `chat-message ${sender}`;messageDiv.textContent = content;chatMessages.appendChild(messageDiv);chatMessages.scrollTop = chatMessages.scrollHeight;return messageDiv;}// 创建输入指示器function createTypingIndicator() {const container = document.createElement('div');container.className = 'typing-indicator';container.innerHTML = `<div class="typing-dot"></div><div class="typing-dot"></div><div class="typing-dot"></div>`;chatMessages.appendChild(container);chatMessages.scrollTop = chatMessages.scrollHeight;return container;}
</script>
</body>
</html>

3.5 测试

• 启动项目,访问 http://localhost:9999/deepSeek 即可出现页面,开始对话即可
  

总结

通过本文，我们详细介绍了如何在Spring Boot项目中接入DeepSeek深度求索。从准备工作到实现搜索和推荐功能，再到处理异常，我们一步一步地完成了整个接入过程。希望本文能够帮助您快速上手并充分利用DeepSeek的强大功能。