## 申请退款 #### URL:http://域名/ver1/pay/refund #### 访问方式：post ~~~[api] post:/refund *merOrderId#商户订单号 *refundOrderId#退款单号，由商户生成，保证唯一性 *amount#退款金额，单位为分 refundReason#退款原因 <<< success { "code":0, "msg":"success", "data":{ "refundId":"平台退款单号" } } <<< error { "code":"错误码", "msg":"错误描述" }