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- <!DOCTYPE html>
- <html lang="zh-CN">
- <head>
- <meta charset="UTF-8">
- <meta name="viewport" content="width=device-width, initial-scale=1.0">
- <title>智能问答系统</title>
- <link href="https://cdnjs.cloudflare.com/ajax/libs/font-awesome/6.0.0-beta3/css/all.min.css" rel="stylesheet">
- <style>
- :root {
- --primary-color: #4a6fa5;
- --secondary-color: #6c757d;
- --accent-color: #61dafb;
- --bg-color: #f8f9fa;
- --text-color: #343a40;
- --border-color: #dee2e6;
- --hover-color: #e9ecef;
- }
- * {
- box-sizing: border-box;
- margin: 0;
- padding: 0;
- }
- body {
- font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
- line-height: 1.6;
- color: var(--text-color);
- background-color: var(--bg-color);
- display: flex;
- flex-direction: column;
- height: 100vh;
- }
- header {
- background-color: var(--primary-color);
- color: white;
- padding: 1rem;
- text-align: center;
- box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
- }
- .container {
- max-width: 1200px;
- margin: 0 auto;
- padding: 1rem;
- display: flex;
- flex: 1;
- flex-direction: column;
- }
- .chat-container {
- display: flex;
- height: calc(100vh - 180px);
- border: 1px solid var(--border-color);
- border-radius: 8px;
- overflow: hidden;
- background-color: white;
- box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
- }
- .sidebar {
- width: 250px;
- background-color: #f1f3f5;
- padding: 1rem;
- border-right: 1px solid var(--border-color);
- display: flex;
- flex-direction: column;
- }
- .main-content {
- flex: 1;
- display: flex;
- flex-direction: column;
- position: relative;
- }
- .chat-history {
- flex: 1;
- padding: 1rem;
- overflow-y: auto;
- scroll-behavior: smooth;
- }
- .chat-input-container {
- padding: 1rem;
- border-top: 1px solid var(--border-color);
- background-color: white;
- display: flex;
- flex-direction: column;
- }
- .source-filter {
- display: flex;
- align-items: center;
- margin-bottom: 0.5rem;
- }
- .source-filter select {
- margin-left: 0.5rem;
- padding: 0.3rem;
- border-radius: 4px;
- border: 1px solid var(--border-color);
- }
- .input-group {
- display: flex;
- }
- .chat-input {
- flex: 1;
- padding: 0.75rem;
- border: 1px solid var(--border-color);
- border-radius: 4px 0 0 4px;
- font-size: 1rem;
- resize: none;
- height: 45px;
- max-height: 150px;
- overflow-y: auto;
- }
- .chat-input:focus {
- outline: none;
- border-color: var(--primary-color);
- }
- .send-btn {
- background-color: var(--primary-color);
- color: white;
- border: none;
- padding: 0 1.25rem;
- border-radius: 0 4px 4px 0;
- cursor: pointer;
- font-size: 1rem;
- transition: background-color 0.2s;
- }
- .send-btn:hover {
- background-color: #3a5a8c;
- }
- .send-btn:disabled {
- background-color: var(--secondary-color);
- cursor: not-allowed;
- }
- .message {
- margin-bottom: 1rem;
- display: flex;
- flex-direction: column;
- }
- .message-content {
- padding: 0.75rem 1rem;
- border-radius: 8px;
- max-width: 80%;
- word-break: break-word;
- }
- .user-message {
- align-self: flex-end;
- }
- .user-message .message-content {
- background-color: var(--primary-color);
- color: white;
- align-self: flex-end;
- }
- .system-message {
- align-self: flex-start;
- }
- .system-message .message-content {
- background-color: #e9ecef;
- align-self: flex-start;
- }
- .typing-indicator {
- display: inline-block;
- padding: 0.75rem 1rem;
- background-color: #e9ecef;
- border-radius: 8px;
- margin-bottom: 1rem;
- }
- .typing-indicator span {
- display: inline-block;
- width: 8px;
- height: 8px;
- border-radius: 50%;
- background-color: var(--secondary-color);
- margin-right: 4px;
- animation: typing 1s infinite;
- }
- .typing-indicator span:nth-child(2) {
- animation-delay: 0.2s;
- }
- .typing-indicator span:nth-child(3) {
- animation-delay: 0.4s;
- margin-right: 0;
- }
- @keyframes typing {
- 0%, 100% {
- transform: translateY(0);
- }
- 50% {
- transform: translateY(-5px);
- }
- }
- .session-controls {
- display: flex;
- justify-content: space-between;
- margin-bottom: 1rem;
- }
- .new-session-btn, .clear-history-btn {
- background-color: var(--secondary-color);
- color: white;
- border: none;
- padding: 0.5rem 1rem;
- border-radius: 4px;
- cursor: pointer;
- font-size: 0.9rem;
- transition: background-color 0.2s;
- }
- .new-session-btn:hover, .clear-history-btn:hover {
- background-color: #5a6268;
- }
- .session-info {
- font-size: 0.9rem;
- color: var(--secondary-color);
- margin-top: 1rem;
- }
- .history-title {
- font-weight: bold;
- margin-bottom: 1rem;
- color: var(--primary-color);
- }
- .history-list {
- flex: 1;
- overflow-y: auto;
- }
- .history-item {
- padding: 0.75rem;
- border-bottom: 1px solid var(--border-color);
- cursor: pointer;
- transition: background-color 0.2s;
- }
- .history-item:hover {
- background-color: var(--hover-color);
- }
- .history-question {
- font-weight: bold;
- white-space: nowrap;
- overflow: hidden;
- text-overflow: ellipsis;
- }
- .history-answer {
- color: var(--secondary-color);
- white-space: nowrap;
- overflow: hidden;
- text-overflow: ellipsis;
- font-size: 0.85rem;
- }
- .loading-overlay {
- position: absolute;
- top: 0;
- left: 0;
- right: 0;
- bottom: 0;
- background-color: rgba(255, 255, 255, 0.8);
- display: flex;
- justify-content: center;
- align-items: center;
- z-index: 10;
- visibility: hidden;
- }
- .spinner {
- width: 40px;
- height: 40px;
- border: 4px solid rgba(0, 0, 0, 0.1);
- border-radius: 50%;
- border-left-color: var(--primary-color);
- animation: spin 1s linear infinite;
- }
- @keyframes spin {
- 0% { transform: rotate(0deg); }
- 100% { transform: rotate(360deg); }
- }
- /* 响应式设计 */
- @media (max-width: 768px) {
- .chat-container {
- flex-direction: column;
- }
- .sidebar {
- width: 100%;
- border-right: none;
- border-bottom: 1px solid var(--border-color);
- max-height: 200px;
- }
- }
- </style>
- </head>
- <body>
- <header>
- <h1>智能问答系统</h1>
- </header>
- <div class="container">
- <div class="chat-container">
- <div class="sidebar">
- <div class="session-controls">
- <button class="new-session-btn" id="newSessionBtn">
- <i class="fas fa-plus"></i> 新会话
- </button>
- <button class="clear-history-btn" id="clearHistoryBtn">
- <i class="fas fa-trash"></i> 清除历史
- </button>
- </div>
- <div class="history-title">历史消息</div>
- <div class="history-list" id="historyList">
- <!-- 历史消息将动态添加到这里 -->
- </div>
- <div class="session-info" id="sessionInfo"></div>
- </div>
- <div class="main-content">
- <div class="chat-history" id="chatHistory">
- <!-- 消息将动态添加到这里 -->
- <div class="message system-message">
- <div class="message-content">
- 您好!我是智能问答助手,有什么我可以帮您的吗?
- </div>
- </div>
- </div>
- <div class="chat-input-container">
- <div class="source-filter">
- <label for="sourceFilter">知识域:</label>
- <select id="sourceFilter">
- <option value="">全部</option>
- <!-- 知识域选项将动态添加 -->
- </select>
- </div>
- <div class="input-group">
- <textarea class="chat-input" id="chatInput" placeholder="请输入您的问题..."
- rows="1" oninput="this.style.height='auto';this.style.height=this.scrollHeight+'px'"></textarea>
- <button class="send-btn" id="sendBtn">
- <i class="fas fa-paper-plane"></i>
- </button>
- </div>
- </div>
- <div class="loading-overlay" id="loadingOverlay">
- <div class="spinner"></div>
- </div>
- </div>
- </div>
- </div>
- <script>
- // 全局变量
- let currentSessionId = null;
- let isResponseInProgress = false;
- let socket = null;
- // DOM元素
- const chatHistory = document.getElementById('chatHistory');
- const chatInput = document.getElementById('chatInput');
- const sendBtn = document.getElementById('sendBtn');
- const sourceFilter = document.getElementById('sourceFilter');
- const historyList = document.getElementById('historyList');
- const sessionInfo = document.getElementById('sessionInfo');
- const newSessionBtn = document.getElementById('newSessionBtn');
- const clearHistoryBtn = document.getElementById('clearHistoryBtn');
- const loadingOverlay = document.getElementById('loadingOverlay');
- // API URL前缀,根据部署环境调整
- const API_BASE_URL = ''; // 如果API和前端在同一域,可以留空
- // 页面加载完成后执行
- document.addEventListener('DOMContentLoaded', async () => {
- // 创建新会话
- await createNewSession();
- // 加载知识域
- await loadSources();
- // 事件监听器
- sendBtn.addEventListener('click', sendMessage);
- chatInput.addEventListener('keydown', (e) => {
- if (e.key === 'Enter' && !e.shiftKey) {
- e.preventDefault();
- sendMessage();
- }
- });
- newSessionBtn.addEventListener('click', createNewSession);
- clearHistoryBtn.addEventListener('click', clearHistory);
- });
- // 创建新会话
- async function createNewSession() {
- try {
- const response = await fetch(`${API_BASE_URL}/api/create_session`, {
- method: 'POST'
- });
- if (!response.ok) {
- throw new Error('创建会话失败');
- }
- const data = await response.json();
- currentSessionId = data.session_id;
- // 更新会话信息
- sessionInfo.textContent = `会话ID: ${currentSessionId.slice(0, 8)}...`;
- // 清空聊天历史
- clearChatHistory();
- // 加载会话历史
- await loadHistory();
- } catch (error) {
- console.error('创建会话错误:', error);
- alert('创建会话失败,请刷新页面重试');
- }
- }
- // 加载知识域
- async function loadSources() {
- try {
- const response = await fetch(`${API_BASE_URL}/api/sources`);
- if (!response.ok) {
- throw new Error('获取知识域失败');
- }
- const data = await response.json();
- // 清空现有选项
- sourceFilter.innerHTML = '<option value="">全部</option>';
- // 添加知识域选项
- data.sources.forEach(source => {
- const option = document.createElement('option');
- option.value = source;
- option.textContent = source;
- sourceFilter.appendChild(option);
- });
- } catch (error) {
- console.error('加载知识域错误:', error);
- }
- }
- // 加载历史消息
- async function loadHistory() {
- if (!currentSessionId) return;
- try {
- const response = await fetch(`${API_BASE_URL}/api/history/${currentSessionId}`);
- if (!response.ok) {
- throw new Error('获取历史记录失败');
- }
- const data = await response.json();
- // 清空历史列表
- historyList.innerHTML = '';
- // 添加历史记录到侧边栏
- data.history.forEach((item, index) => {
- const historyItem = document.createElement('div');
- historyItem.className = 'history-item';
- historyItem.innerHTML = `
- <div class="history-question">${item.question}</div>
- <div class="history-answer">${item.answer.substring(0, 50)}${item.answer.length > 50 ? '...' : ''}</div>
- `;
- // 点击历史记录项显示对话
- historyItem.addEventListener('click', () => {
- // 清空现有聊天记录
- clearChatHistory();
- // 添加用户问题
- addMessage('user', item.question);
- // 添加系统回答
- addMessage('system', item.answer);
- // 滚动到底部
- scrollToBottom();
- });
- historyList.appendChild(historyItem);
- });
- } catch (error) {
- console.error('加载历史记录错误:', error);
- }
- }
- // 清除历史记录
- async function clearHistory() {
- if (!currentSessionId) return;
- try {
- const response = await fetch(`${API_BASE_URL}/api/history/${currentSessionId}`, {
- method: 'DELETE'
- });
- if (!response.ok) {
- throw new Error('清除历史记录失败');
- }
- // 清空历史列表
- historyList.innerHTML = '';
- // 清空聊天历史
- clearChatHistory();
- // 添加欢迎消息
- chatHistory.innerHTML = `
- <div class="message system-message">
- <div class="message-content">
- 历史记录已清除,有什么我可以帮您的吗?
- </div>
- </div>
- `;
- } catch (error) {
- console.error('清除历史记录错误:', error);
- alert('清除历史记录失败');
- }
- }
- // 清空聊天历史
- function clearChatHistory() {
- chatHistory.innerHTML = `
- <div class="message system-message">
- <div class="message-content">
- 您好!我是智能问答助手,有什么我可以帮您的吗?
- </div>
- </div>
- `;
- }
- // 发送消息
- async function sendMessage() {
- const query = chatInput.value.trim();
- const filter = sourceFilter.value;
- if (!query || isResponseInProgress) return;
- // 重置输入框
- chatInput.value = '';
- chatInput.style.height = 'auto';
- // 添加用户消息到聊天窗口
- addMessage('user', query);
- // 设置正在响应标志
- isResponseInProgress = true;
- // 添加正在输入指示器
- const typingIndicator = document.createElement('div');
- typingIndicator.className = 'typing-indicator';
- typingIndicator.innerHTML = '<span></span><span></span><span></span>';
- chatHistory.appendChild(typingIndicator);
- // 滚动到底部
- scrollToBottom();
- try {
- // 发送查询请求
- const response = await fetch(`${API_BASE_URL}/api/query`, {
- method: 'POST',
- headers: {
- 'Content-Type': 'application/json'
- },
- body: JSON.stringify({
- query: query,
- source_filter: filter,
- session_id: currentSessionId
- })
- });
- if (!response.ok) {
- throw new Error('查询失败');
- }
- const data = await response.json();
- // 移除输入指示器
- if (typingIndicator.parentNode) {
- chatHistory.removeChild(typingIndicator);
- }
- // 如果需要流式输出,使用WebSocket
- if (data.is_streaming) {
- // 创建系统消息容器,但内容为空
- const messageElement = document.createElement('div');
- messageElement.className = 'message system-message';
- const contentElement = document.createElement('div');
- contentElement.className = 'message-content';
- contentElement.textContent = '';
- messageElement.appendChild(contentElement);
- chatHistory.appendChild(messageElement);
- // 建立WebSocket连接进行流式输出
- await handleStreamingResponse(query, filter, contentElement);
- } else {
- // 直接添加完整答案
- addMessage('system', data.answer);
- }
- // 重新加载历史记录
- await loadHistory();
- } catch (error) {
- console.error('发送消息错误:', error);
- // 移除输入指示器
- if (typingIndicator.parentNode) {
- chatHistory.removeChild(typingIndicator);
- }
- // 添加错误消息
- addMessage('system', `抱歉,发生错误: ${error.message}`);
- } finally {
- // 清除正在响应标志
- isResponseInProgress = false;
- // 滚动到底部
- scrollToBottom();
- }
- }
- // 处理流式响应
- async function handleStreamingResponse(query, filter, contentElement) {
- // 关闭现有连接
- if (socket && socket.readyState === WebSocket.OPEN) {
- socket.close();
- }
- return new Promise((resolve, reject) => {
- // WebSocket URL
- const wsProtocol = window.location.protocol === 'https:' ? 'wss:' : 'ws:';
- const wsUrl = `${wsProtocol}//${window.location.host}${API_BASE_URL}/api/stream`;
- // 创建WebSocket连接
- socket = new WebSocket(wsUrl);
- // 连接建立时
- socket.onopen = function() {
- console.log('WebSocket连接已建立');
- // 发送查询请求
- socket.send(JSON.stringify({
- query: query,
- source_filter: filter,
- session_id: currentSessionId
- }));
- };
- // 接收消息时
- socket.onmessage = function(event) {
- const data = JSON.parse(event.data);
- switch (data.type) {
- case 'start':
- console.log('流式响应开始');
- break;
- case 'token':
- // 追加token到内容
- contentElement.textContent += data.token;
- scrollToBottom();
- break;
- case 'end':
- console.log('流式响应结束');
- socket.close();
- resolve();
- break;
- case 'error':
- console.error('流式响应错误:', data.error);
- contentElement.textContent += `\n[错误: ${data.error}]`;
- socket.close();
- reject(new Error(data.error));
- break;
- }
- };
- // 发生错误时
- socket.onerror = function(error) {
- console.error('WebSocket错误:', error);
- contentElement.textContent += '\n[连接错误]';
- reject(error);
- };
- // 连接关闭时
- socket.onclose = function() {
- console.log('WebSocket连接已关闭');
- resolve();
- };
- });
- }
- // 添加消息到聊天窗口
- function addMessage(type, content) {
- const messageElement = document.createElement('div');
- messageElement.className = `message ${type === 'user' ? 'user-message' : 'system-message'}`;
- const contentElement = document.createElement('div');
- contentElement.className = 'message-content';
- contentElement.textContent = content;
- messageElement.appendChild(contentElement);
- chatHistory.appendChild(messageElement);
- // 滚动到底部
- scrollToBottom();
- }
- // 滚动到底部
- function scrollToBottom() {
- chatHistory.scrollTop = chatHistory.scrollHeight;
- }
- </script>
- </body>
- </html>
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