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java抓取Bing首页图片并保存的教程
时间:2018-06-22 编辑:猪哥 来源:一聚教程网
import org.apache.http.HttpEntity; 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 java.io.*; import java.text.SimpleDateFormat; import java.util.Date; import java.util.regex.Matcher; import java.util.regex.Pattern; public class DownloadImg { public static void writeImgEntityToFile(HttpEntity imgEntity,String fileAddress) { File storeFile = new File(fileAddress); FileOutputStream output = null; try { output = new FileOutputStream(storeFile); if (imgEntity != null) { InputStream instream; instream = imgEntity.getContent(); byte b[] = new byte[8 * 1024]; int count; while ((count = instream.read(b)) != -1) { output.write(b, 0, count); } } } catch (FileNotFoundException e) { e.printStackTrace(); } catch (IOException e) { e.printStackTrace(); } finally { try { output.close(); } catch (IOException e) { e.printStackTrace(); } } } public static void main(String[] args) { System.out.println("获取Bing图片地址中……"); SimpleDateFormat dateFormat = new SimpleDateFormat("yyyy-MM-dd"); CloseableHttpClient httpClient = HttpClients.createDefault(); HttpGet httpGet = new HttpGet("http://cn.bing.com/"); CloseableHttpResponse response = null; try { response = httpClient.execute(httpGet); Pattern p = Pattern.compile("g_img=\{url:.*\.jpg"); Matcher m = p.matcher(EntityUtils.toString(response.getEntity())); String address = null; if (m.find()) { address = m.group().split("'")[1].split("'")[0]; } else { System.exit(0); } System.out.println("图片地址:" + address); System.out.println("正在下载……"); HttpGet getImage = new HttpGet(address); CloseableHttpResponse responseImg = httpClient.execute(getImage); HttpEntity entity = responseImg.getEntity(); writeImgEntityToFile(entity,"/home/geekgao/图片/BingImg/" + dateFormat.format(new Date()) + ".jpg"); System.out.println("下载完毕."); } catch (IOException e) { e.printStackTrace(); } finally { try { httpClient.close(); response.close(); } catch (IOException e) { e.printStackTrace(); } } } }
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