<dependency>

      <groupId>com.aliyun.oss</groupId>

      <artifactId>aliyun-sdk-oss</artifactId>

      <version>2.1.0</version>

</dependency>

public class TestOSSUpload {

	private static String endpoint = "http://oss-cn-shanghai.aliyuncs.com";

	private static String accessKeyId = "你的accessKeyId ";

	private static String accessKeySecret = "你的accessKeySecret";

	private static String bucketName = "你的bucket";

	public void putObject(String bucketName, String key, String filePath) throws FileNotFoundException {

	    // 初始化OSSClient

		OSSClient  client = new OSSClient(endpoint, accessKeyId,  accessKeySecret); 

	    // 获取指定文件的输入流

	    File file = new File(filePath);

	    InputStream content = new FileInputStream(file);

	    // 创建上传Object的Metadata

	    ObjectMetadata meta = new ObjectMetadata();

	    // 必须设置ContentLength

	    meta.setContentLength(file.length());

	    Date expire = new Date(new Date().getTime() + 30 * 1000);

	    meta.setExpirationTime(expire);

	    // 上传Object.

	    PutObjectResult result = client.putObject(bucketName, key, content, meta);

	    // 打印ETag

	    System.out.println("etag--------------->"+result.getETag());

	}

	public static void main(String[] args) throws FileNotFoundException {

		TestOSSUpload testOSSUpload = new TestOSSUpload();

		testOSSUpload.putObject(bucketName, "temp3.xlsx", "D:\\temp.xlsx");

		File file = new File("D:\\temp.xlsx");

		String md5 = testOSSUpload.getFileMD5(file);

		System.out.println("md5---------------->"+md5);

	}

	public static String getFileMD5(File file) {

	    if (!file.isFile()){

	      return null;

	    }

	    MessageDigest digest = null;

	    FileInputStream in=null;

	    byte buffer[] = new byte[1024];

	    int len;

	    try {

	      digest = MessageDigest.getInstance("MD5");

	      in = new FileInputStream(file);

	      while ((len = in.read(buffer, 0, 1024)) != -1) {

	        digest.update(buffer, 0, len);

	      }

	      in.close();

	    } catch (Exception e) {

	      e.printStackTrace();

	      return null;

	    }

	    BigInteger bigInt = new BigInteger(1, digest.digest());

	    return bigInt.toString(16).toUpperCase();

	  }

}