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这是使用Scrapy库编写的视频爬虫程序。我们使用Scala语言编写爬虫程序，用于爬取https://map.qq.com/的视频。代码中使用了代理服务器，代理服务器的主机名为www.duoip.cn，端口号为8000。
import com.typesafe.config.ConfigFactory import org.jsoup.Jsoup import org.jsoup.nodes.Document import org.jsoup.nodes.Element import org.jsoup.select.Elements import org.apache.http.HttpHost import org.apache.http.client.config.RequestConfig import org.apache.http.impl.client.CloseableHttpClient import org.apache.http.impl.client.HttpClients import org.apache.http.client.methods.CloseableHttpResponse import org.apache.http.client.methods.HttpGet import org.apache.http.entity.ContentType import org.apache.http.impl.io.IOUtils import scala.concurrent.duration._ import scala.concurrent.ExecutionContext.Implicits.global import scala.concurrent.Future case class ProxyConfig(proxyHost: String, proxyPort: Int) object VideoCrawler { def main(args: Array[String]): Unit = { val config = ConfigFactory.load() val proxyConfig = ProxyConfig(config.getString("proxyHost"), config.getInt("proxyPort")) val url = "https://map.qq.com" crawl(url, proxyConfig) } def crawl(url: String, proxyConfig: ProxyConfig): Unit = { val client = createHttpClient(proxyConfig) val request = createRequest(url) val response = executeRequest(client, request) val document = parseResponse(response) val videoElements = extractVideoElements(document) println(videoElements) } def createHttpClient(proxyConfig: ProxyConfig): CloseableHttpClient = { val httpHost = new HttpHost(proxyConfig.proxyHost, proxyConfig.proxyPort, "http") val config = RequestConfig.custom().setProxy(httpHost).build() HttpClients.custom().setDefaultRequestConfig(config).build() } def createRequest(url: String): HttpGet = { new HttpGet(url) } def executeRequest(client: CloseableHttpClient, request: HttpGet): CloseableHttpResponse = { val response = client.execute(request) response } def parseResponse(response: CloseableHttpResponse): Document = { val content = Stream.readAll(response.getEntity().getContent()) val document = Jsoup.parse(content.toString(), "UTF-8") document } def extractVideoElements(document: Document): Elements = { val videoElements = document.select("video") videoElements以上代码首先从配置文件中获取代理服务器的配置信息，然后创建一个HttpClient对象来执行HTTP请求。接着创建一个HttpGet对象来指定要请求的URL，然后执行一个HTTP请求并获取响应。然后解析响应并将其转换为一个Document对象。最后，从Document对象中提取出所有视频元素，并将它们打印出来。 注意，这只是一个基础的视频爬虫程序，实际使用时可能需要根据具体的网页结构和需求进行修改和优化。同时，使用代理服务器爬取网页可能会遇到一些问题，例如代理服务器的可用性、速度等，需要根据实际情况进行调整和优化。
