Different merchants need to register a client in advance and save it in the database
Apply for token
All api requests except the header must bring the Authorization value for the successful token
All requests must bring the parameter sign value. All parameters are executed according to the parameter algorithm to obtain a string.
Return example
[
{
"country_code": "AA",
"country_cn_name": "XXXX",
"country_en_name": "APO/FPO"
},
{
"country_code": "AD",
"country_cn_name": "XXXXX",
"country_en_name": "Andorra"
},
]
