簡單的爬蟲程式

package Jsoups;

import org.apache.http.client.methods.CloseableHttpResponse;
import org.apache.http.client.methods.HttpGet;
import org.apache.http.impl.client.CloseableHttpClient;
import org.apache.http.impl.client.HttpClients;
import org.apache.http.util.EntityUtils;
import org.jsoup.Jsoup;
import org.jsoup.nodes.Document;
import org.jsoup.nodes.Element;
import org.jsoup.select.Elements;

import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.net.URL;
import java.net.URLConnection;

public class spider01 {
public static void main(String[] args) throws IOException {
CloseableHttpClient httpClient = HttpClients.createDefault();

    HttpGet httpGet = new HttpGet("https://pic.yesky.com/c/6_25156.shtml");

    CloseableHttpResponse response = httpClient.execute(httpGet);

    if (response.getStatusLine().getStatusCode() == 200) {
        String utf8 = EntityUtils.toString(response.getEntity(), "utf8");
        Document document = Jsoup.parse(utf8);
        Elements elements = document.getElementsByClass("tabList");
        int count = 0;
        for (Element element : elements) {
            for (Element element1 : element.getElementsByTag("li")) {
                for (Element img : element1.getElementsByTag("img")) {
                    String src = img.attr("src");
                    URL url = new URL(src);
                    URLConnection urlConnection = url.openConnection();
                    InputStream inputStream = urlConnection.getInputStream();
                    FileOutputStream outputStream = new FileOutputStream("E:\\Picture\\" + (count++) + ".png");
                    int temp = 0;
                    while ((temp = inputStream.read()) != -1) {
                        outputStream.write(temp);
                    }
                    System.out.println(count + ".png下載完成");
                    outputStream.close();
                    inputStream.close();
                }

            }

        }
    }
}

}