syntax = "v1" info ( title: "产品支付服务" desc: "产品支付服务" author: "Liangzai" email: "2440983361@qq.com" ) type ( PaymentReq { Id string `json:"id"` PayMethod string `json:"pay_method"` } PaymentResp { prepayID string `json:"prepay_id"` OrderID int64 `json:"order_id"` } ) type ( IapCallbackReq { OrderID int64 `json:"order_id" validate:"required"` TransactionReceipt string `json:"transaction_receipt" validate:"required"` } )