1、接口的请求和响应的报文：采用JSON作为具体业务报文的载体
2、请求方式为：POST方式
3、报文中中文字符编码需要设置为：UTF-8
4、sign计算规则为：
(1) 筛选参数并排序

获取所有请求参数，不包含有子节点的参数，不包括字节类型参数，如文件、字节流，剔除sign字段，剔除值为空的参数（NULL或全空格都视为空），并按照第一个字符的键值ASCII码递增排序（字母升序排序），如果遇到相同字符则按照第二个字符的键值ASCII码递增排序，以此类推。

(2) 拼接参数

将排序后的参数与其对应值，组合成“参数参数值”的格式，并且把这些参数全部拼接起来，此时生成的字符串为待签名字符串。

(3) 计算签名

将待签名字符串首尾拼接密钥后，进行md5运算，并转为大写

5.报文及sign计算示例

  • 如以下请求报文
  1. {
  2.     "request_type": "scanpay_request",
  3.     "isspid": "39493002",
  4.     "pos_id": "1511300001",
  5.     "store_id": "1511300001",
  6.     "pos_seq": "1812100000002",
  7.     "user_id": "imageco",
  8.     "system_id": "8888",
  9.     "scanpay_request": {
  10.         "pay_type": "502",
  11.         "tx_amt": "1",
  12.         "goods_detail": [
  13.             {
  14.                 "goods_id": "apple-01啊",
  15.                 "payment_goods_id": "20010001",
  16.                 "goods_name": "ipad",
  17.                 "quantity": 1,
  18.                 "price": 200000,
  19.                 "goods_category": "34543238",
  20.                 "body": "特价手机",
  21.                 "show_url": "http://www.alipay.com/xxx.jpg"
  22.             },
  23.             {
  24.                 "goods_id": "apple-02额",
  25.                 "payment_goods_id": "20010002",
  26.                 "goods_name": "ipad2",
  27.                 "quantity": 1,
  28.                 "price": 200000,
  29.                 "goods_category": "34543239",
  30.                 "body": "特价手机2",
  31.                 "show_url": "http://www.alipay.com/xxx2.jpg"
  32.             }
  33.         ]
  34.     }
  35. }
  • 接入密钥为 test

(1) 筛选参数并排序

  1. "isspid":"39493002"
  2. "pos_id":"1511300001"
  3. "pos_seq":"1812100000002"
  4. "request_type":"scanpay_request"
  5. "store_id":"1511300001"
  6. "system_id":"8888"
  7. "user_id":"imageco"

(2) 拼接参数生成待签名字符串

  1. isspid39493002pos_id1511300001pos_seq1812100000002request_typescanpay_requeststore_id1511300001system_id8888user_idimageco

(3) 计算sign值

  1. md5(testisspid39493002pos_id1511300001pos_seq1812100000002request_typescanpay_requeststore_id1511300001system_id8888user_idimagecotest)
  2. =b7eee879c312adb820f44588d32c8222

(4) 将计算出的sign值转为大写放入请求报文形成最终请求JSON

  1. {
  2.     "request_type": "scanpay_request",
  3.     "isspid": "39493002",
  4.     "pos_id": "1511300001",
  5.     "store_id": "1511300001",
  6.     "pos_seq": "1812100000002",
  7.     "user_id": "imageco",
  8.     "system_id": "8888",
  9.     "scanpay_request": {
  10.         "pay_type": "502",
  11.         "tx_amt": "1",
  12.         "goods_detail": [
  13.             {
  14.                 "goods_id": "apple-01啊",
  15.                 "payment_goods_id": "20010001",
  16.                 "goods_name": "ipad",
  17.                 "quantity": 1,
  18.                 "price": 200000,
  19.                 "goods_category": "34543238",
  20.                 "body": "特价手机",
  21.                 "show_url": "http://www.alipay.com/xxx.jpg"
  22.             },
  23.             {
  24.                 "goods_id": "apple-02额",
  25.                 "payment_goods_id": "20010002",
  26.                 "goods_name": "ipad2",
  27.                 "quantity": 1,
  28.                 "price": 200000,
  29.                 "goods_category": "34543239",
  30.                 "body": "特价手机2",
  31.                 "show_url": "http://www.alipay.com/xxx2.jpg"
  32.             }
  33.         ]
  34.     },
  35.     "sign": "B7EEE879C312ADB820F44588D32C8222"
  36. }