使用JoddHttpImpl,退款时生成的URL是https://api.mch.weixin.qq.com/sandboxnew/secapi/pay/refund ,实际上应该是 https://api.mch.weixin.qq.com/sandboxnew/pay/refund
使用JoddHttpImpl,退款时生成的URL是https://api.mch.weixin.qq.com/sandboxnew/secapi/pay/refund ,实际上应该是 https://api.mch.weixin.qq.com/sandboxnew/pay/refund