汇率换算API

curl --request GET 'https://v2.xxapi.cn/api/exchange?from=&to=&amount=' \
  --header 'Authorization: Bearer <access_key>'

// 货币代码可以查看https://xxapi.cn/doc/allrates
{
    "code": 200,
    "msg": "数据请求成功",
    "data": {
        "amount": 100,
        "from": "USD",
        "rate": 7.3325486852,
        "result": 733.25486852,
        "to": "CNY",
        "update_at": 1736700600000
    },
    "request_id": "821d95235d5917f746600d0b"
}