报文格式为：JSON

请求报文：{"mchnt_cd" :"商户代码", "message"："密文体"}

密文是由明文封装成json字符串 商户用富友公钥加密，富友在用富友私钥解密

请求明文格式如下：

 {
  "mchnt_cd" :"商户代码", 
  "message"："{"mchnt_cd":"0002900F0096235","order_date":"20200917","order_id":"10771600324085063","ver":"1.0.0"}"
 }

对message明文json字符串进行加密 最终得到密文报文体如下：

{
 "mchnt_cd" :"商户代码",
 "message":"uX7DcjQfDmmu3SiCoANd2sUmYAN8fifC2QFuIilyFgT146h2Navc
            Kf54pI85suFCUSJbqpjIntMBB4FtZxM0AWT59TjSpAd4S4zC9AFJOIXuTyPHh
            5kMeQgoVNb7awmvc3CjlnDMusaNBiydWwYxo1EGRtHrwuYOkiPD3yxWgC0="
}

响应报文： {"mchnt_cd" :"商户代码", "message"："密文体","resp_code":"应答码","resp_desc":"应答描述"}

请求成功：

响应报文如下：

{
 "mchnt_cd" :"商户代码",
 "message":"uX7DcjQfDmmu3SiCoANd2sUmYAN8fifC2QFuIilyFgT146h
            2NavcKf54pI85suFCUSJbqpjIntMBB4FtZxM0AWT59TjSpAd4S4zC9AFJ
            OIXuTyPHh5kMeQgoVNb7awmvc3CjlnDMusaNBiydWwYxo1EGRtHrwuYOkiPD3yxWgC0=",
 "resp_code":"0000",
 "resp_desc":"成功"
}

请求失败：

响应报文如下： {"mchntcd" :"商户代码,”message”:"","resp_code":"5019","resp_desc":"商户代码为空或格式错误"}