ISV Server对响应消息体进行签名

代码调用如所示

/**
* 生成http响应消息体签名示例Demo
* @param key 用户在isv console分配的accessKey，请登录后查看
* @param body http响应的报文
* @return 加密结果
* @throws InvalidKeyException
* @throws NoSuchAlgorithmException
* @throws IllegalStateException
* @throws UnsupportedEncodingException
*/
public static String generateResponseBodySignature(String key, String body)
throws InvalidKeyException, NoSuchAlgorithmException,
IllegalStateException, UnsupportedEncodingException
{
return base_64(hmacSHA256(key, body));
}