问求告知OCR一直返回{"code":14,"message":"sign no pass"}原因？

是什么问题导致的，想问下如何解决？

签名算法如下：

private static final String bucketName = "";

private static final long expired = 2592000;

/**

* 生成 Authorization 签名字段

*

* @param appId

* @param secretId

* @param secretKey

* @param bucketName

* @param expired

* @return

* @throws Exception

*/

public static String appSign(long appId, String secretId, String secretKey, String bucketName, long expired)

throws Exception {

System.out.println(expired);

long now = System.currentTimeMillis() / 1000;

int rdm = Math.abs(new Random().nextInt());

String plainText = String.format("a=%d&b=%s&k=%s&t=%d&e=%d&r=%d", appId, bucketName, secretId, now,

now + expired, rdm);

byte[] hmacDigest = HmacSha1(plainText, secretKey);

byte[] signContent = new byte[hmacDigest.length + plainText.getBytes().length];

System.arraycopy(hmacDigest, 0, signContent, 0, hmacDigest.length);

System.arraycopy(plainText.getBytes(), 0, signContent, hmacDigest.length, plainText.getBytes().length);

return Base64Encode(signContent);

}

/**

* 生成 base64 编码

*

* @param binaryData

* @return

*/

public static String Base64Encode(byte[] binaryData) {

String encodedstr = null;

try {

System.out.println(binaryData);

encodedstr = Base64.getEncoder().encodeToString(binaryData);

System.out.println(encodedstr);

} catch (Exception e) {

e.printStackTrace();

}

return encodedstr;

}

/**

* 生成 hmacsha1 签名

*

* @param binaryData

* @param key

* @return

* @throws Exception

*/

public static byte[] HmacSha1(byte[] binaryData, String key) throws Exception {

Mac mac = Mac.getInstance("HmacSHA1");

SecretKeySpec secretKey = new SecretKeySpec(key.getBytes(), "HmacSHA1");

mac.init(secretKey);

byte[] HmacSha1Digest = mac.doFinal(binaryData);

return HmacSha1Digest;

}

/**

* 生成 hmacsha1 签名

*

* @param plainText

* @param key

* @return

* @throws Exception

*/

public static byte[] HmacSha1(String plainText, String key) throws Exception {

return HmacSha1(plainText.getBytes(), key);

}