阿里云Oss（针对私有bucket）的加签工具、外链工具 不依赖不依赖阿里云OSS sdk、第三方工具包 Java、Android平台都可以使用

/**
 * STS 方式生成外链
 * @throws URISyntaxException
 */
@Test
public  void generatePresignedUrl() throws URISyntaxException {

    String bucketName="test";
    String keyId="STS.lNPyUWj3Cw4RljIWj915";
    String keySecret="wbbeqWA72EdvpWsOXctBNRENbSwpB5NfyZq0Paz3";
    String securityToken="CAES0AMIARKAAV0xbMc5QxHSaRCJquxvE8EiT+nKdG/ngHS98ywDkUmsTcLCyIyjFdYBLrShCWizY3" +
            "/0iMO9yUFQDB4FteiXFR38HdKCFGe35xj6TmNFbPHclMcAIO9feKMcdIh9oHkiSv8OY98K9oe+vy" +
            "+XYJetK6skjqmnJUBhawfOYEQayNrvGhhTVFMubE5QeVVXajNDdzRSbGpJV2o5MTUiEDEyMTc5Mzc1NTQwNjg3NjcqCGxvbmd5dWFuMIzT6pDuKToGUnNhTUQ1QoMCCgExGm8KBUFsbG93EikKDEFjdGlvbkVxdWFscxIGQWN0aW9uGhEKD29zczpMaXN0T2JqZWN0cxI7Cg5SZXNvdXJjZUVxdWFscxIIUmVzb3VyY2UaHwodYWNzOm9zczoqOio6cW0taW1nLWlmaXR0aW5nLyoajAEKBUFsbG93EicKDEFjdGlvbkVxdWFscxIGQWN0aW9uGg8KDW9zczpHZXRPYmplY3QSOwoOUmVzb3VyY2VFcXVhbHMSCFJlc291cmNlGh8KHWFjczpvc3M6KjoqOnFtLWltZy1pZml0dGluZy8qEh0KClN0cmluZ0xpa2USCm9zczpQcmVmaXgaAwoBKg==";
                    Date expiration=  new Date(System.currentTimeMillis() + (60 * 60 * 1000));

    URI endpoint = new URI("http://test.ifitting.com");

    URL url = UrlSignUtils.generatePresignedUrl(keyId, keySecret, securityToken, expiration, bucketName, "1.jpg", endpoint);
    System.out.println(url.toString());
}
/**
 * 主A/K 方式生成外链
 * @throws URISyntaxException
 */
@Test
public  void generatePresignedUrl2() throws URISyntaxException {

    String bucketName="test";
    String keyId="lNPyUWj3Cw4RljIWj915";
    String keySecret="wbbeqWA72EdvpWsOXctBNRENbSwpB5NfyZq0Paz3";
    Date expiration=  new Date(System.currentTimeMillis() + (60 * 60 * 1000));

    URI endpoint = new URI("http://test.ifitting.com");

    URL url = UrlSignUtils.generatePresignedUrl(keyId, keySecret, expiration, bucketName, "1.jpg", endpoint);
    System.out.println(url.toString());
}








	筱龙缘
	2015-07-31