流 的简单纯Go实现，带有用于回调的处理程序，并易于访问付款创建和验证。 例子 package main import ( "fmt" "github.com/CamiloHernandez/go-flow" "net/http" ) func main () { c := flow . NewClient ( "your api key" , "your secret key" ) c . SetSandbox () resu