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  1. <!DOCTYPE html>
  2. <html lang="zh-CN">
  3. <head>
  4. <meta charset="UTF-8">
  5. <meta name="viewport" content="width=device-width, initial-scale=1.0">
  6. <title>智能问答系统</title>
  7. <link href="https://cdnjs.cloudflare.com/ajax/libs/font-awesome/6.0.0-beta3/css/all.min.css" rel="stylesheet">
  8. <style>
  9. :root {
  10. --primary-color: #4a6fa5;
  11. --secondary-color: #6c757d;
  12. --accent-color: #61dafb;
  13. --bg-color: #f8f9fa;
  14. --text-color: #343a40;
  15. --border-color: #dee2e6;
  16. --hover-color: #e9ecef;
  17. }
  18. * {
  19. box-sizing: border-box;
  20. margin: 0;
  21. padding: 0;
  22. }
  23. body {
  24. font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
  25. line-height: 1.6;
  26. color: var(--text-color);
  27. background-color: var(--bg-color);
  28. display: flex;
  29. flex-direction: column;
  30. height: 100vh;
  31. }
  32. header {
  33. background-color: var(--primary-color);
  34. color: white;
  35. padding: 1rem;
  36. text-align: center;
  37. box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
  38. }
  39. .container {
  40. max-width: 1200px;
  41. margin: 0 auto;
  42. padding: 1rem;
  43. display: flex;
  44. flex: 1;
  45. flex-direction: column;
  46. }
  47. .chat-container {
  48. display: flex;
  49. height: calc(100vh - 180px);
  50. border: 1px solid var(--border-color);
  51. border-radius: 8px;
  52. overflow: hidden;
  53. background-color: white;
  54. box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
  55. }
  56. .sidebar {
  57. width: 250px;
  58. background-color: #f1f3f5;
  59. padding: 1rem;
  60. border-right: 1px solid var(--border-color);
  61. display: flex;
  62. flex-direction: column;
  63. }
  64. .main-content {
  65. flex: 1;
  66. display: flex;
  67. flex-direction: column;
  68. position: relative;
  69. }
  70. .chat-history {
  71. flex: 1;
  72. padding: 1rem;
  73. overflow-y: auto;
  74. scroll-behavior: smooth;
  75. }
  76. .chat-input-container {
  77. padding: 1rem;
  78. border-top: 1px solid var(--border-color);
  79. background-color: white;
  80. display: flex;
  81. flex-direction: column;
  82. }
  83. .source-filter {
  84. display: flex;
  85. align-items: center;
  86. margin-bottom: 0.5rem;
  87. }
  88. .source-filter select {
  89. margin-left: 0.5rem;
  90. padding: 0.3rem;
  91. border-radius: 4px;
  92. border: 1px solid var(--border-color);
  93. }
  94. .input-group {
  95. display: flex;
  96. }
  97. .chat-input {
  98. flex: 1;
  99. padding: 0.75rem;
  100. border: 1px solid var(--border-color);
  101. border-radius: 4px 0 0 4px;
  102. font-size: 1rem;
  103. resize: none;
  104. height: 45px;
  105. max-height: 150px;
  106. overflow-y: auto;
  107. }
  108. .chat-input:focus {
  109. outline: none;
  110. border-color: var(--primary-color);
  111. }
  112. .send-btn {
  113. background-color: var(--primary-color);
  114. color: white;
  115. border: none;
  116. padding: 0 1.25rem;
  117. border-radius: 0 4px 4px 0;
  118. cursor: pointer;
  119. font-size: 1rem;
  120. transition: background-color 0.2s;
  121. }
  122. .send-btn:hover {
  123. background-color: #3a5a8c;
  124. }
  125. .send-btn:disabled {
  126. background-color: var(--secondary-color);
  127. cursor: not-allowed;
  128. }
  129. .message {
  130. margin-bottom: 1rem;
  131. display: flex;
  132. flex-direction: column;
  133. }
  134. .message-content {
  135. padding: 0.75rem 1rem;
  136. border-radius: 8px;
  137. max-width: 80%;
  138. word-break: break-word;
  139. }
  140. .user-message {
  141. align-self: flex-end;
  142. }
  143. .user-message .message-content {
  144. background-color: var(--primary-color);
  145. color: white;
  146. align-self: flex-end;
  147. }
  148. .system-message {
  149. align-self: flex-start;
  150. }
  151. .system-message .message-content {
  152. background-color: #e9ecef;
  153. align-self: flex-start;
  154. }
  155. .typing-indicator {
  156. display: inline-block;
  157. padding: 0.75rem 1rem;
  158. background-color: #e9ecef;
  159. border-radius: 8px;
  160. margin-bottom: 1rem;
  161. }
  162. .typing-indicator span {
  163. display: inline-block;
  164. width: 8px;
  165. height: 8px;
  166. border-radius: 50%;
  167. background-color: var(--secondary-color);
  168. margin-right: 4px;
  169. animation: typing 1s infinite;
  170. }
  171. .typing-indicator span:nth-child(2) {
  172. animation-delay: 0.2s;
  173. }
  174. .typing-indicator span:nth-child(3) {
  175. animation-delay: 0.4s;
  176. margin-right: 0;
  177. }
  178. @keyframes typing {
  179. 0%, 100% {
  180. transform: translateY(0);
  181. }
  182. 50% {
  183. transform: translateY(-5px);
  184. }
  185. }
  186. .session-controls {
  187. display: flex;
  188. justify-content: space-between;
  189. margin-bottom: 1rem;
  190. }
  191. .new-session-btn, .clear-history-btn {
  192. background-color: var(--secondary-color);
  193. color: white;
  194. border: none;
  195. padding: 0.5rem 1rem;
  196. border-radius: 4px;
  197. cursor: pointer;
  198. font-size: 0.9rem;
  199. transition: background-color 0.2s;
  200. }
  201. .new-session-btn:hover, .clear-history-btn:hover {
  202. background-color: #5a6268;
  203. }
  204. .session-info {
  205. font-size: 0.9rem;
  206. color: var(--secondary-color);
  207. margin-top: 1rem;
  208. }
  209. .history-title {
  210. font-weight: bold;
  211. margin-bottom: 1rem;
  212. color: var(--primary-color);
  213. }
  214. .history-list {
  215. flex: 1;
  216. overflow-y: auto;
  217. }
  218. .history-item {
  219. padding: 0.75rem;
  220. border-bottom: 1px solid var(--border-color);
  221. cursor: pointer;
  222. transition: background-color 0.2s;
  223. }
  224. .history-item:hover {
  225. background-color: var(--hover-color);
  226. }
  227. .history-question {
  228. font-weight: bold;
  229. white-space: nowrap;
  230. overflow: hidden;
  231. text-overflow: ellipsis;
  232. }
  233. .history-answer {
  234. color: var(--secondary-color);
  235. white-space: nowrap;
  236. overflow: hidden;
  237. text-overflow: ellipsis;
  238. font-size: 0.85rem;
  239. }
  240. .loading-overlay {
  241. position: absolute;
  242. top: 0;
  243. left: 0;
  244. right: 0;
  245. bottom: 0;
  246. background-color: rgba(255, 255, 255, 0.8);
  247. display: flex;
  248. justify-content: center;
  249. align-items: center;
  250. z-index: 10;
  251. visibility: hidden;
  252. }
  253. .spinner {
  254. width: 40px;
  255. height: 40px;
  256. border: 4px solid rgba(0, 0, 0, 0.1);
  257. border-radius: 50%;
  258. border-left-color: var(--primary-color);
  259. animation: spin 1s linear infinite;
  260. }
  261. @keyframes spin {
  262. 0% { transform: rotate(0deg); }
  263. 100% { transform: rotate(360deg); }
  264. }
  265. /* 响应式设计 */
  266. @media (max-width: 768px) {
  267. .chat-container {
  268. flex-direction: column;
  269. }
  270. .sidebar {
  271. width: 100%;
  272. border-right: none;
  273. border-bottom: 1px solid var(--border-color);
  274. max-height: 200px;
  275. }
  276. }
  277. </style>
  278. </head>
  279. <body>
  280. <header>
  281. <h1>智能问答系统</h1>
  282. </header>
  283. <div class="container">
  284. <div class="chat-container">
  285. <div class="sidebar">
  286. <div class="session-controls">
  287. <button class="new-session-btn" id="newSessionBtn">
  288. <i class="fas fa-plus"></i> 新会话
  289. </button>
  290. <button class="clear-history-btn" id="clearHistoryBtn">
  291. <i class="fas fa-trash"></i> 清除历史
  292. </button>
  293. </div>
  294. <div class="history-title">历史消息</div>
  295. <div class="history-list" id="historyList">
  296. <!-- 历史消息将动态添加到这里 -->
  297. </div>
  298. <div class="session-info" id="sessionInfo"></div>
  299. </div>
  300. <div class="main-content">
  301. <div class="chat-history" id="chatHistory">
  302. <!-- 消息将动态添加到这里 -->
  303. <div class="message system-message">
  304. <div class="message-content">
  305. 您好!我是智能问答助手,有什么我可以帮您的吗?
  306. </div>
  307. </div>
  308. </div>
  309. <div class="chat-input-container">
  310. <div class="source-filter">
  311. <label for="sourceFilter">知识域:</label>
  312. <select id="sourceFilter">
  313. <option value="">全部</option>
  314. <!-- 知识域选项将动态添加 -->
  315. </select>
  316. </div>
  317. <div class="input-group">
  318. <textarea class="chat-input" id="chatInput" placeholder="请输入您的问题..."
  319. rows="1" oninput="this.style.height='auto';this.style.height=this.scrollHeight+'px'"></textarea>
  320. <button class="send-btn" id="sendBtn">
  321. <i class="fas fa-paper-plane"></i>
  322. </button>
  323. </div>
  324. </div>
  325. <div class="loading-overlay" id="loadingOverlay">
  326. <div class="spinner"></div>
  327. </div>
  328. </div>
  329. </div>
  330. </div>
  331. <script>
  332. // 全局变量
  333. let currentSessionId = null;
  334. let isResponseInProgress = false;
  335. let socket = null;
  336. // DOM元素
  337. const chatHistory = document.getElementById('chatHistory');
  338. const chatInput = document.getElementById('chatInput');
  339. const sendBtn = document.getElementById('sendBtn');
  340. const sourceFilter = document.getElementById('sourceFilter');
  341. const historyList = document.getElementById('historyList');
  342. const sessionInfo = document.getElementById('sessionInfo');
  343. const newSessionBtn = document.getElementById('newSessionBtn');
  344. const clearHistoryBtn = document.getElementById('clearHistoryBtn');
  345. const loadingOverlay = document.getElementById('loadingOverlay');
  346. // API URL前缀,根据部署环境调整
  347. const API_BASE_URL = ''; // 如果API和前端在同一域,可以留空
  348. // 页面加载完成后执行
  349. document.addEventListener('DOMContentLoaded', async () => {
  350. // 创建新会话
  351. await createNewSession();
  352. // 加载知识域
  353. await loadSources();
  354. // 事件监听器
  355. sendBtn.addEventListener('click', sendMessage);
  356. chatInput.addEventListener('keydown', (e) => {
  357. if (e.key === 'Enter' && !e.shiftKey) {
  358. e.preventDefault();
  359. sendMessage();
  360. }
  361. });
  362. newSessionBtn.addEventListener('click', createNewSession);
  363. clearHistoryBtn.addEventListener('click', clearHistory);
  364. });
  365. // 创建新会话
  366. async function createNewSession() {
  367. try {
  368. const response = await fetch(`${API_BASE_URL}/api/create_session`, {
  369. method: 'POST'
  370. });
  371. if (!response.ok) {
  372. throw new Error('创建会话失败');
  373. }
  374. const data = await response.json();
  375. currentSessionId = data.session_id;
  376. // 更新会话信息
  377. sessionInfo.textContent = `会话ID: ${currentSessionId.slice(0, 8)}...`;
  378. // 清空聊天历史
  379. clearChatHistory();
  380. // 加载会话历史
  381. await loadHistory();
  382. } catch (error) {
  383. console.error('创建会话错误:', error);
  384. alert('创建会话失败,请刷新页面重试');
  385. }
  386. }
  387. // 加载知识域
  388. async function loadSources() {
  389. try {
  390. const response = await fetch(`${API_BASE_URL}/api/sources`);
  391. if (!response.ok) {
  392. throw new Error('获取知识域失败');
  393. }
  394. const data = await response.json();
  395. // 清空现有选项
  396. sourceFilter.innerHTML = '<option value="">全部</option>';
  397. // 添加知识域选项
  398. data.sources.forEach(source => {
  399. const option = document.createElement('option');
  400. option.value = source;
  401. option.textContent = source;
  402. sourceFilter.appendChild(option);
  403. });
  404. } catch (error) {
  405. console.error('加载知识域错误:', error);
  406. }
  407. }
  408. // 加载历史消息
  409. async function loadHistory() {
  410. if (!currentSessionId) return;
  411. try {
  412. const response = await fetch(`${API_BASE_URL}/api/history/${currentSessionId}`);
  413. if (!response.ok) {
  414. throw new Error('获取历史记录失败');
  415. }
  416. const data = await response.json();
  417. // 清空历史列表
  418. historyList.innerHTML = '';
  419. // 添加历史记录到侧边栏
  420. data.history.forEach((item, index) => {
  421. const historyItem = document.createElement('div');
  422. historyItem.className = 'history-item';
  423. historyItem.innerHTML = `
  424. <div class="history-question">${item.question}</div>
  425. <div class="history-answer">${item.answer.substring(0, 50)}${item.answer.length > 50 ? '...' : ''}</div>
  426. `;
  427. // 点击历史记录项显示对话
  428. historyItem.addEventListener('click', () => {
  429. // 清空现有聊天记录
  430. clearChatHistory();
  431. // 添加用户问题
  432. addMessage('user', item.question);
  433. // 添加系统回答
  434. addMessage('system', item.answer);
  435. // 滚动到底部
  436. scrollToBottom();
  437. });
  438. historyList.appendChild(historyItem);
  439. });
  440. } catch (error) {
  441. console.error('加载历史记录错误:', error);
  442. }
  443. }
  444. // 清除历史记录
  445. async function clearHistory() {
  446. if (!currentSessionId) return;
  447. try {
  448. const response = await fetch(`${API_BASE_URL}/api/history/${currentSessionId}`, {
  449. method: 'DELETE'
  450. });
  451. if (!response.ok) {
  452. throw new Error('清除历史记录失败');
  453. }
  454. // 清空历史列表
  455. historyList.innerHTML = '';
  456. // 清空聊天历史
  457. clearChatHistory();
  458. // 添加欢迎消息
  459. chatHistory.innerHTML = `
  460. <div class="message system-message">
  461. <div class="message-content">
  462. 历史记录已清除,有什么我可以帮您的吗?
  463. </div>
  464. </div>
  465. `;
  466. } catch (error) {
  467. console.error('清除历史记录错误:', error);
  468. alert('清除历史记录失败');
  469. }
  470. }
  471. // 清空聊天历史
  472. function clearChatHistory() {
  473. chatHistory.innerHTML = `
  474. <div class="message system-message">
  475. <div class="message-content">
  476. 您好!我是智能问答助手,有什么我可以帮您的吗?
  477. </div>
  478. </div>
  479. `;
  480. }
  481. // 发送消息
  482. async function sendMessage() {
  483. const query = chatInput.value.trim();
  484. const filter = sourceFilter.value;
  485. if (!query || isResponseInProgress) return;
  486. // 重置输入框
  487. chatInput.value = '';
  488. chatInput.style.height = 'auto';
  489. // 添加用户消息到聊天窗口
  490. addMessage('user', query);
  491. // 设置正在响应标志
  492. isResponseInProgress = true;
  493. // 添加正在输入指示器
  494. const typingIndicator = document.createElement('div');
  495. typingIndicator.className = 'typing-indicator';
  496. typingIndicator.innerHTML = '<span></span><span></span><span></span>';
  497. chatHistory.appendChild(typingIndicator);
  498. // 滚动到底部
  499. scrollToBottom();
  500. try {
  501. // 发送查询请求
  502. const response = await fetch(`${API_BASE_URL}/api/query`, {
  503. method: 'POST',
  504. headers: {
  505. 'Content-Type': 'application/json'
  506. },
  507. body: JSON.stringify({
  508. query: query,
  509. source_filter: filter,
  510. session_id: currentSessionId
  511. })
  512. });
  513. if (!response.ok) {
  514. throw new Error('查询失败');
  515. }
  516. const data = await response.json();
  517. // 移除输入指示器
  518. if (typingIndicator.parentNode) {
  519. chatHistory.removeChild(typingIndicator);
  520. }
  521. // 如果需要流式输出,使用WebSocket
  522. if (data.is_streaming) {
  523. // 创建系统消息容器,但内容为空
  524. const messageElement = document.createElement('div');
  525. messageElement.className = 'message system-message';
  526. const contentElement = document.createElement('div');
  527. contentElement.className = 'message-content';
  528. contentElement.textContent = '';
  529. messageElement.appendChild(contentElement);
  530. chatHistory.appendChild(messageElement);
  531. // 建立WebSocket连接进行流式输出
  532. await handleStreamingResponse(query, filter, contentElement);
  533. } else {
  534. // 直接添加完整答案
  535. addMessage('system', data.answer);
  536. }
  537. // 重新加载历史记录
  538. await loadHistory();
  539. } catch (error) {
  540. console.error('发送消息错误:', error);
  541. // 移除输入指示器
  542. if (typingIndicator.parentNode) {
  543. chatHistory.removeChild(typingIndicator);
  544. }
  545. // 添加错误消息
  546. addMessage('system', `抱歉,发生错误: ${error.message}`);
  547. } finally {
  548. // 清除正在响应标志
  549. isResponseInProgress = false;
  550. // 滚动到底部
  551. scrollToBottom();
  552. }
  553. }
  554. // 处理流式响应
  555. async function handleStreamingResponse(query, filter, contentElement) {
  556. // 关闭现有连接
  557. if (socket && socket.readyState === WebSocket.OPEN) {
  558. socket.close();
  559. }
  560. return new Promise((resolve, reject) => {
  561. // WebSocket URL
  562. const wsProtocol = window.location.protocol === 'https:' ? 'wss:' : 'ws:';
  563. const wsUrl = `${wsProtocol}//${window.location.host}${API_BASE_URL}/api/stream`;
  564. // 创建WebSocket连接
  565. socket = new WebSocket(wsUrl);
  566. // 连接建立时
  567. socket.onopen = function() {
  568. console.log('WebSocket连接已建立');
  569. // 发送查询请求
  570. socket.send(JSON.stringify({
  571. query: query,
  572. source_filter: filter,
  573. session_id: currentSessionId
  574. }));
  575. };
  576. // 接收消息时
  577. socket.onmessage = function(event) {
  578. const data = JSON.parse(event.data);
  579. switch (data.type) {
  580. case 'start':
  581. console.log('流式响应开始');
  582. break;
  583. case 'token':
  584. // 追加token到内容
  585. contentElement.textContent += data.token;
  586. scrollToBottom();
  587. break;
  588. case 'end':
  589. console.log('流式响应结束');
  590. socket.close();
  591. resolve();
  592. break;
  593. case 'error':
  594. console.error('流式响应错误:', data.error);
  595. contentElement.textContent += `\n[错误: ${data.error}]`;
  596. socket.close();
  597. reject(new Error(data.error));
  598. break;
  599. }
  600. };
  601. // 发生错误时
  602. socket.onerror = function(error) {
  603. console.error('WebSocket错误:', error);
  604. contentElement.textContent += '\n[连接错误]';
  605. reject(error);
  606. };
  607. // 连接关闭时
  608. socket.onclose = function() {
  609. console.log('WebSocket连接已关闭');
  610. resolve();
  611. };
  612. });
  613. }
  614. // 添加消息到聊天窗口
  615. function addMessage(type, content) {
  616. const messageElement = document.createElement('div');
  617. messageElement.className = `message ${type === 'user' ? 'user-message' : 'system-message'}`;
  618. const contentElement = document.createElement('div');
  619. contentElement.className = 'message-content';
  620. contentElement.textContent = content;
  621. messageElement.appendChild(contentElement);
  622. chatHistory.appendChild(messageElement);
  623. // 滚动到底部
  624. scrollToBottom();
  625. }
  626. // 滚动到底部
  627. function scrollToBottom() {
  628. chatHistory.scrollTop = chatHistory.scrollHeight;
  629. }
  630. </script>
  631. </body>
  632. </html>