从网络爬取图片，生成缩略图，保存到百度云存储代码,Java代码库,德仔网

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【Java】从网络爬取图片，生成缩略图，保存到百度云存储
作者:CodeKingKong / 发布于2015/1/12/ 779

	public class Sample {
	private static final Log log = LogFactory.getLog(Sample.class);
	// ----------------------------------------
	static String host = "bcs.duapp.com";
	static String accessKey = "XXXXXXXXXXXXXXXXXX"; //注册百度的时候，分配的accessKey
	static String secretKey = "XXXXXXXXXXXXXXXXXXXXXXXX"; //注册百度的时候，分配的secretKey
	static String bucket = "XXXbucket"; //在百度平台建立的bucket
	
	public static void main(String[] args) throws URISyntaxException,
	 IOException {
	
	 // TODO Auto-generated method stub BCSCredentials
	 BCSCredentials credentials = new BCSCredentials(accessKey, secretKey);
	 BaiduBCS baiduBCS = new BaiduBCS(credentials, host); // baiduBCS.setDefaultEncoding("GBK");
	 baiduBCS.setDefaultEncoding("UTF-8"); // Default UTF-8
	 try {
	
	 String object = "/net_File"; //上传到百度云存储上面的文件名称
	 putObjectByFile(baiduBCS, object);
	 } catch (BCSServiceException e) {
	 log.warn("Bcs return:" + e.getBcsErrorCode() + ", "
	 + e.getBcsErrorMessage() + ", RequestId="
	 + e.getRequestId());
	 } catch (BCSClientException e) {
	 e.printStackTrace();
	 }
	}
	
	public static void inputstreamtofile(InputStream ins, File file)
	 throws IOException {
	 OutputStream os = new FileOutputStream(file);
	 int bytesRead = 0;
	 byte[] buffer = new byte[8192];
	 while ((bytesRead = ins.read(buffer, 0, 8192)) != -1) {
	 os.write(buffer, 0, bytesRead);
	 }
	 os.close();
	 ins.close();
	}
	
	public static void putObjectByFile(BaiduBCS baiduBCS, String object)
	 throws IOException {
	 ObjectMetadata metadata = new ObjectMetadata();
	 metadata.setContentType("image/jpeg");
	 InputStream in = null;
	
	 URL url = new URL(http://p2.qhimg.com/t014aca5713dd7b7474.jpg); //从网上解析图片
	
	
	 HttpURLConnection conn = (HttpURLConnection) url.openConnection();
	 conn.setRequestMethod("GET");
	 conn.setConnectTimeout(5 * 1000);
	 InputStream inStream = conn.getInputStream();
	 Thumbnails.of(inStream).size(100, 100).toFile("upload/test.jpg"); 生成缩略图片
	 File file = new File("upload/test.jpg"); //暂时保存本地
	
	 byte[] buffer_data = getBytes("upload/test.jpg"); //加载本地缩略图片
	 in = ByteToInputStream(buffer_data,in);
	 metadata.setContentLength(buffer_data.length);
	 metadata.setContentLength(buffer_data.length);
	
	 PutObjectRequest request = new PutObjectRequest(bucket, object, in,
	 metadata);
	 request.setMetadata(metadata);
	 BaiduBCSResponse<ObjectMetadata> response = baiduBCS.putObject(request);
	 ObjectMetadata objectMetadata = response.getResult();
	 log.info("x-bs-request-id: " + response.getRequestId());
	 log.info(objectMetadata);
	 file.delete(); //删除本地图片
	}
	
	public static byte[] getBytes(String filePath) {
	 byte[] buffer = null;
	 try {
	 File file = new File(filePath); // 得到文件的byte流....
	 System.out.println(file.length());
	 FileInputStream fis = new FileInputStream(file);
	 ByteArrayOutputStream bos = new ByteArrayOutputStream(1000);
	 byte[] b = new byte[1000];
	 int n;
	 while ((n = fis.read(b)) != -1) {
	 bos.write(b, 0, n);
	 }
	 fis.close();
	 bos.close();
	 buffer = bos.toByteArray();
	 } catch (FileNotFoundException e) {
	 e.printStackTrace();
	 } catch (IOException e) {
	 e.printStackTrace();
	 }
	 return buffer;
	}
	
	public static String bytesToHexString(byte[] src) {
	 StringBuilder stringBuilder = new StringBuilder();
	 if (src == null || src.length <= 0) {
	 return null;
	 }
	 for (int i = 0; i < src.length; i++) {
	 int v = src[i] & 0xFF;
	 String hv = Integer.toHexString(v);
	 if (hv.length() < 2) {
	 stringBuilder.append(0);
	 }
	 stringBuilder.append(hv);
	 }
	 return stringBuilder.toString();
	}
	
	public static InputStream ByteToInputStream(byte buffer[], InputStream in) {
	 in = new ByteArrayInputStream(buffer);
	 return in;
	}
	}
试试其它关键字
　网络爬取图片　　缩略图　　百度云存储　
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