# Java (/zh/quickstarts/java)
Related: [Node.js](/zh/quickstarts/nodejs.md), [Next.js](/zh/quickstarts/nextjs.md), [Express](/zh/quickstarts/express.md), [NestJS](/zh/quickstarts/nestjs.md), [Fastify](/zh/quickstarts/fastify.md), [Hono](/zh/quickstarts/hono.md)
## 前提条件 [#前提条件]
* Java 11+
* 一个 Firecrawl API 密钥 — [免费获取](https://www.firecrawl.dev/app/api-keys)
## 安装 SDK [#安装-sdk]
```kotlin
dependencies {
implementation("com.firecrawl:firecrawl-java:1.2.0")
}
```
```xml
com.firecrawl
firecrawl-java
1.2.0
```
## 进行网页搜索 [#进行网页搜索]
```java
import com.firecrawl.client.FirecrawlClient;
import com.firecrawl.models.SearchData;
import com.firecrawl.models.SearchOptions;
public class Main {
public static void main(String[] args) {
FirecrawlClient client = FirecrawlClient.builder()
.apiKey("fc-YOUR-API-KEY")
.build();
SearchData results = client.search(
"firecrawl web scraping",
SearchOptions.builder().limit(5).build()
);
if (results.getWeb() != null) {
for (var result : results.getWeb()) {
System.out.println(result.get("title") + " - " + result.get("url"));
}
}
}
}
```
## 抓取网页 [#抓取网页]
```java
import com.firecrawl.models.Document;
Document doc = client.scrape("https://example.com");
System.out.println(doc.getMarkdown());
```
```json
{
"markdown": "# Example Domain\n\nThis domain is for use in illustrative examples...",
"metadata": {
"title": "Example Domain",
"sourceURL": "https://example.com"
}
}
```
## 与页面交互 [#与页面交互]
打开一个浏览器会话，在其中运行 Playwright 代码，并在完成后将其关闭：
```java
import com.firecrawl.models.ScrapeOptions;
import com.firecrawl.models.BrowserExecuteResponse;
import java.util.List;
Document doc = client.scrape("https://www.amazon.com",
ScrapeOptions.builder().formats(List.of((Object) "markdown")).build());
String scrapeId = (String) doc.getMetadata().get("scrapeId");
BrowserExecuteResponse run = client.interact(scrapeId,
"const title = await page.title(); console.log(title);");
System.out.println(run.getStdout());
client.stopInteractiveBrowser(scrapeId);
```
## 环境变量 [#环境变量]
不要直接传入 `apiKey`，请改为设置 `FIRECRAWL_API_KEY` 环境变量：
```bash
export FIRECRAWL_API_KEY=fc-YOUR-API-KEY
```
```java
FirecrawlClient client = FirecrawlClient.fromEnv();
```
## 后续步骤 [#后续步骤]
进行网页搜索并获取完整页面内容
包含 formats、actions 和代理在内的所有抓取选项
点击、填写表单并提取动态内容
完整的 SDK 参考，涵盖爬取、map、批量抓取等