> ## Documentation Index > Fetch the complete documentation index at: https://docs-model.skyengine.com.cn/llms.txt > Use this file to discover all available pages before exploring further. # Claude 流式对话示例 > 使用Claude API进行流式对话的完整示例代码 # Claude 流式对话示例 以下示例展示如何使用Claude的 `/v1/messages` 接口进行流式对话，实现实时打字效果。 ## 快速开始 只需要替换 `` 为你的实际API密钥即可运行。 ```bash cURL theme={null} curl -X POST "https://model-api.skyengine.com.cn/v1/messages" \ -H "Content-Type: application/json" \ -H "Authorization: Bearer " \ -H "anthropic-version: 2023-06-01" \ -d '{ "model": "claude-3-5-sonnet-20241022", "max_tokens": 1000, "stream": true, "messages": [ { "role": "user", "content": "请写一首关于秋天的诗" } ] }' \ --no-buffer ``` ```python Python theme={null} import requests import json # 配置API密钥和基础URL API_KEY = "" BASE_URL = "https://model-api.skyengine.com.cn/v1" def stream_chat_with_claude(message): url = f"{BASE_URL}/messages" headers = { "Content-Type": "application/json", "Authorization": f"Bearer {API_KEY}", "anthropic-version": "2023-06-01" } data = { "model": "claude-3-5-sonnet-20241022", "max_tokens": 1000, "stream": True, "messages": [ { "role": "user", "content": message } ] } response = requests.post(url, headers=headers, json=data, stream=True) if response.status_code == 200: full_response = "" for line in response.iter_lines(decode_unicode=True): if line.startswith('data: '): data = line[6:] if data == '[DONE]': break try: parsed = json.loads(data) if parsed.get('type') == 'content_block_delta': if 'delta' in parsed and 'text' in parsed['delta']: content = parsed['delta']['text'] full_response += content print(content, end="", flush=True) except json.JSONDecodeError: continue return full_response else: return f"错误: {response.status_code} - {response.text}" # 使用示例 if __name__ == "__main__": message = "请写一首关于秋天的诗" print("Claude回复: ", end="") reply = stream_chat_with_claude(message) print(f"\n\n完整回复: {reply}") ``` ```javascript JavaScript/Node.js theme={null} const axios = require('axios'); // 配置API密钥和基础URL const API_KEY = ''; const BASE_URL = 'https://model-api.skyengine.com.cn/v1'; async function streamChatWithClaude(message) { const url = `${BASE_URL}/messages`; const headers = { 'Content-Type': 'application/json', 'Authorization': `Bearer ${API_KEY}`, 'anthropic-version': '2023-06-01' }; const data = { model: 'claude-3-5-sonnet-20241022', max_tokens: 1000, stream: true, messages: [ { role: 'user', content: message } ] }; return new Promise((resolve, reject) => { let fullResponse = ''; fetch(url, { method: 'POST', headers: headers, body: JSON.stringify(data) }) .then(response => { if (!response.ok) { throw new Error(`HTTP error! status: ${response.status}`); } const reader = response.body.getReader(); const decoder = new TextDecoder(); function processStream() { return reader.read().then(({ done, value }) => { if (done) { resolve(fullResponse); return; } const chunk = decoder.decode(value); const lines = chunk.split('\n'); for (const line of lines) { if (line.startsWith('data: ')) { const data = line.slice(6); if (data === '[DONE]') { resolve(fullResponse); return; } try { const parsed = JSON.parse(data); if (parsed.type === 'content_block_delta' && parsed.delta && parsed.delta.text) { const content = parsed.delta.text; fullResponse += content; process.stdout.write(content); } } catch (error) { // 忽略解析错误 } } } return processStream(); }); } return processStream(); }) .catch(reject); }); } // 使用示例 (async () => { try { const message = '请写一首关于秋天的诗'; process.stdout.write('Claude回复: '); const reply = await streamChatWithClaude(message); console.log(`\n\n完整回复: ${reply}`); } catch (error) { console.error('错误:', error.message); } })(); ``` ## Claude流式响应格式 Claude的流式响应包含多种事件类型： ```json theme={null} event: message_start data: 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event: content_block_delta data: 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event: content_block_delta data: 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. . . event: content_block_delta data: 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event: message_stop data: 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``` ## 重要参数说明 * **stream**: 设置为 `true` 启用流式输出 * **type**: 事件类型，主要关注 `content_block_delta` * **delta.text**: 每个数据块包含的文本增量 * **anthropic-version**: 必需的API版本头 ## Claude流式特点 1. **事件驱动**: 使用不同的事件类型标识流的各个阶段 2. **结构化**: 内容块有明确的开始和增量事件 3. **元数据丰富**: 提供详细的消息和内容块信息