# Fastify (/zh/quickstarts/fastify)
Related: [Node.js](/zh/quickstarts/nodejs.md), [Next.js](/zh/quickstarts/nextjs.md), [Express](/zh/quickstarts/express.md), [NestJS](/zh/quickstarts/nestjs.md), [Hono](/zh/quickstarts/hono.md), [Bun](/zh/quickstarts/bun.md)
## 前提条件 [#前提条件]
* Node.js 18+
* Firecrawl API 密钥 — [免费获取](https://www.firecrawl.dev/app/api-keys)
## 配置 [#配置]
```bash
npm install fastify firecrawl
```
将你的 API 密钥添加到 `.env` 中：
```bash
FIRECRAWL_API_KEY=fc-YOUR-API-KEY
```
## 进行网页搜索 [#进行网页搜索]
```javascript
import Fastify from "fastify";
import { Firecrawl } from "firecrawl";
const fastify = Fastify({ logger: true });
const firecrawl = new Firecrawl({ apiKey: process.env.FIRECRAWL_API_KEY });
fastify.post("/search", async (request) => {
const { query } = request.body;
return firecrawl.search(query, { limit: 5 });
});
fastify.listen({ port: 3000 });
```
## 抓取网页 [#抓取网页]
```javascript
fastify.post("/scrape", async (request) => {
const { url } = request.body;
return firecrawl.scrape(url);
});
```
## 与页面交互 [#与页面交互]
使用交互控制实时浏览器会话，可点击按钮、填写表单并提取动态内容。
```javascript
fastify.post("/interact", async (request) => {
const { url } = request.body;
const result = await firecrawl.scrape(url, { formats: ['markdown'] });
const scrapeId = result.metadata?.scrapeId;
await firecrawl.interact(scrapeId, { prompt: 'Search for iPhone 16 Pro Max' });
const response = await firecrawl.interact(scrapeId, { prompt: 'Click on the first result and tell me the price' });
await firecrawl.stopInteraction(scrapeId);
return { output: response.output };
});
```
## 作为 Fastify 插件 [#作为-fastify-插件]
将客户端封装为插件，以便在不同路由之间复用：
```javascript
import fp from "fastify-plugin";
import { Firecrawl } from "firecrawl";
export default fp(async function firecrawlPlugin(fastify) {
const client = new Firecrawl({ apiKey: process.env.FIRECRAWL_API_KEY });
fastify.decorate("firecrawl", client);
});
```
注册该插件后，即可在任意路由中使用 `fastify.firecrawl`：
```javascript
fastify.register(firecrawlPlugin);
fastify.post("/search", async function (request) {
const { query } = request.body;
return this.firecrawl.search(query, { limit: 5 });
});
```
## 试一试 [#试一试]
```bash
curl -X POST http://localhost:3000/search \
-H "Content-Type: application/json" \
-d '{"query": "firecrawl web scraping"}'
```
## 后续步骤 [#后续步骤]
包含所有抓取选项，包括 formats、actions 和代理
进行网页搜索并获取完整页面内容
点击、填写表单并提取动态内容
完整的 SDK 参考，涵盖爬取、map、batch 抓取 等功能