orivate void generateSignatureBindCardRequest bindCardRequest!拼接除了对称秘钥之外的其他字段并按照ASCII码从小到大排序使用键值对的形式拼接成string1StringBuilder sb = new StringBuilderString and = &sbappendaccType=+bindCardRequestgetAccTy

This code is generating a signature for a BindCardRequest object. It concatenates all the fields except the symmetric key in ascending order of their ASCII codes using key-value pairs. The concatenated string is then signed using RSA. The corresponding private key is obtained based on the card bin, and the signature is encoded in Base64. The generated signature is set in the BindCardRequest object. If any exception occurs during the process, an error message is logged and an AthenaRuntimeException is thrown